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Cheap flights from St. Louis (STL) to Washington, D.C. (WAS) from $55

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — WAS
Jun 7 — Jun 141
From?
To?
Fri 6/7
Fri 6/14
1 adult, Economy
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The best prices from Lambert-St Louis to Washington, D.C. are usually found in January or February, booked 62 days in advance, depart on a Saturday or Friday and return on a Saturday

Cheap flight deals from St. Louis to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 2, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$236

One-way from

$114
High demand for flights, 16% potential price rise
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Best time to find cheap flights, 25% potential price drop
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From Lambert-St Louis to Washington, D.C. (WAS)
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One-way flight from Lambert-St Louis to Washington, D.C. (WAS)
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What is the cheapest day to fly round-trip from St. Louis to Washington, D.C.?

Flights from St. Louis to Washington, D.C. are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C..

How far in advance should I book a flight from St. Louis to Washington, D.C.?

Travelers have found it’s best to book a flight 53 days in advance to save up to 108% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 53 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Washington, D.C. 1-2 weeks in advance for as low as $327, or $466 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Washington, D.C.?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to Washington, D.C.. Flights to Washington, D.C. from St. Louis in January are about $276 on average during January, but can be found for as low as $108.

What is the cheapest time of day to fly from STL to WAS?

It’s typically best to fly out from St. Louis to Washington, D.C. in the evening. Doing so could potentially save you 49% on the flight price compared to flying at noon, which is usually more expensive.

Cheap United Airlines flights from St. Louis to Washington, D.C.

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Take a look at some of the lowest-priced United Airlines flights heading from St. Louis to Washington, D.C.. Come back soon if you're not finding the exact deal you're looking for.
Fri 8/168:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sun 8/186:00 amIAD - STL
1 stop5h 23mUnited Airlines
Deal found 6/1$219
Tue 7/28:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sat 7/65:25 pmIAD - STL
1 stop5h 23mUnited Airlines
Deal found 5/31$225
Sat 6/295:30 pmSTL - IAD
1 stop6h 00mUnited Airlines
Sat 7/65:25 pmIAD - STL
1 stop5h 23mUnited Airlines
Deal found 6/1$228
Fri 9/205:20 pmSTL - IAD
1 stop5h 55mUnited Airlines
Sun 9/226:30 amIAD - STL
1 stop4h 37mUnited Airlines
Deal found 6/1$244
Sat 6/295:30 pmSTL - IAD
1 stop6h 00mUnited Airlines
Sat 7/68:15 amIAD - STL
Nonstop2h 07mUnited Airlines
Deal found 6/1$262
Fri 8/168:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sun 8/188:15 amIAD - STL
Nonstop2h 07mUnited Airlines
Deal found 6/1$266
Tue 7/168:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Fri 7/196:00 amIAD - STL
1 stop5h 23mUnited Airlines
Deal found 6/1$299
Sat 6/298:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sat 7/68:15 amIAD - STL
Nonstop2h 07mUnited Airlines
Deal found 6/1$307
Mon 7/18:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Fri 7/55:23 pmIAD - STL
1 stop6h 08mUnited Airlines
Deal found 6/1$319

  • If you’re traveling from St. Louis to Washington, D.C., one of the more common airlines traveling that route is United Airlines. Flights from United Airlines traveling this route typically cost $377.33 RT. This price is typically 58% more expensive than other airlines that offer St. Louis to Washington, D.C. flights. When booking this route, the cheapest RT price found was $195. The most popular departure airport in St. Louis when flying to Washington, D.C. is Lambert-St Louis Airport. The most popular airport to fly into when visiting Washington, D.C. is Washington, D.C. Dulles Intl Airport. When flying from St. Louis to Washington, D.C., United Airlines flights are 6% more popular than any other airline flying that same route.

Cheap Delta flights from St. Louis to Washington, D.C.

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Take a gander at the lowest prices we've found on Delta flights from St. Louis to Washington, D.C.. Check back soon if you're not seeing flights that suit your needs.
Mon 7/16:00 amSTL - DCA
1 stop6h 18mDelta
Fri 7/58:45 amDCA - STL
1 stop6h 45mDelta
Deal found 6/1$188
Tue 10/226:45 amSTL - IAD
1 stop4h 16mDelta
Tue 10/225:30 pmIAD - STL
1 stop7h 05mDelta
Deal found 6/1$208
Sat 6/295:25 pmSTL - DCA
1 stop4h 06mDelta
Sat 7/67:00 amDCA - STL
1 stop5h 45mDelta
Deal found 6/1$228
Wed 7/106:00 amSTL - IAD
1 stop7h 04mDelta
Tue 7/167:11 pmIAD - STL
1 stop5h 28mDelta
Deal found 6/1$243
Fri 6/76:10 pmSTL - IAD
1 stop3h 48mDelta
Tue 6/117:20 pmIAD - STL
1 stop5h 23mDelta
Deal found 6/1$498
Fri 6/76:10 pmSTL - IAD
1 stop3h 48mDelta
Sun 6/912:35 pmIAD - STL
1 stop6h 26mDelta
Deal found 6/1$579

  • One of the most popular airlines traveling from St. Louis to Washington, D.C. is Delta. Flights from Delta traveling this route typically cost $350.20 RT. This price is typically 54% cheaper than other airlines that offer St. Louis to Washington, D.C. flights. When booking this route, the cheapest RT price found was $191. Lambert-St Louis Airport is the most common St. Louis airport to take off from when flying to Washington, D.C.. Washington, D.C. Dulles Intl Airport is the most popular arrival airport in Washington, D.C.. When flying from St. Louis to Washington, D.C., Delta flights are 4% more popular than any other airline flying that same route.

Cheap St. Louis to Washington, D.C. flights in June & July 2024

Find cheap flight options from St. Louis to Washington, D.C. specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,810,401 searches. Prices were last updated on June 2, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Washington, D.C. in 2024. For more flight deals, be sure to check back very soon.
Tue 6/113:23 pmSTL - BWI
1 stop23h 38mSpirit Airlines
Wed 6/1210:45 pmBWI - STL
2 stops21h 37mSpirit Airlines
Deal found 6/1$164
Tue 6/113:23 pmSTL - BWI
1 stop23h 38mSpirit Airlines
Wed 6/1210:45 pmBWI - STL
1 stop19h 43mSpirit Airlines
Deal found 6/1$172
Thu 6/276:22 pmSTL - BWI
1 stop13h 13mSpirit Airlines
Sat 6/297:18 pmBWI - STL
1 stop22h 14mSpirit Airlines
Deal found 6/1$180
Sat 6/296:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Tue 7/27:42 amDCA - STL
Nonstop2h 23mAmerican Airlines
Deal found 6/1$189
Tue 6/1811:57 amSTL - BWI
1 stop10h 53mMultiple Airlines
Sat 6/228:15 pmBWI - STL
1 stop11h 52mMultiple Airlines
Deal found 6/1$189
Sat 6/88:02 pmSTL - DCA
1 stop15h 05mFrontier
Tue 6/1112:59 pmDCA - STL
1 stop21h 30mFrontier
Deal found 6/1$204
Tue 6/1111:57 amSTL - BWI
2 stops10h 54mSpirit Airlines
Wed 6/1210:45 pmBWI - STL
2 stops21h 37mSpirit Airlines
Deal found 6/1$204
Sat 6/295:25 pmSTL - DCA
1 stop4h 06mDelta
Tue 7/210:10 amDCA - STL
1 stop5h 46mDelta
Deal found 6/1$208
Thu 6/206:22 pmSTL - BWI
1 stop29h 23mSpirit Airlines
Mon 6/2410:45 pmBWI - STL
1 stop16h 38mSpirit Airlines
Deal found 6/1$209

St. Louis to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Washington, D.C. in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Washington, D.C. in 2024. For more flight deals, be sure to check back very soon.
Tue 6/113:23 pmSTL - BWI
1 stop23h 38mSpirit Airlines
Wed 6/1210:45 pmBWI - STL
2 stops21h 37mSpirit Airlines
Deal found 6/1$164
Wed 9/184:31 pmSTL - BWI
1 stop23h 41mSpirit Airlines
Sun 9/2210:40 amBWI - STL
1 stop8h 49mSpirit Airlines
Deal found 6/1$167
Tue 6/113:23 pmSTL - BWI
1 stop23h 38mSpirit Airlines
Wed 6/1210:45 pmBWI - STL
1 stop19h 43mSpirit Airlines
Deal found 6/1$172
Thu 6/276:22 pmSTL - BWI
1 stop13h 13mSpirit Airlines
Sat 6/297:18 pmBWI - STL
1 stop22h 14mSpirit Airlines
Deal found 6/1$180
Wed 9/184:31 pmSTL - BWI
2 stops23h 59mSpirit Airlines
Sun 9/2210:40 amBWI - STL
1 stop8h 49mSpirit Airlines
Deal found 6/1$185
Tue 7/23:23 pmSTL - BWI
1 stop8h 22mSpirit Airlines
Sat 7/66:45 amBWI - STL
1 stop11h 43mSpirit Airlines
Deal found 5/31$187
Mon 7/16:00 amSTL - DCA
1 stop6h 18mDelta
Fri 7/58:45 amDCA - STL
1 stop6h 45mDelta
Deal found 6/1$188
Tue 7/166:10 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Tue 7/163:26 pmDCA - STL
Nonstop2h 21mAmerican Airlines
Deal found 6/1$189
Tue 6/1811:57 amSTL - BWI
1 stop10h 53mMultiple Airlines
Sat 6/228:15 pmBWI - STL
1 stop11h 52mMultiple Airlines
Deal found 6/1$189

Non-stop flights to Washington, D.C. from St. Louis

Discover non-stop flight options from St. Louis to Washington, D.C.. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
To help reduce your travel time, choose from one of these non-stop flights from St. Louis to Washington, D.C.. Those looking to potentially save on 1 or 2-stop flights from St. Louis to Washington, D.C. should utilize the search form at the the top of the page.
Tue 7/166:10 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Tue 7/163:26 pmDCA - STL
Nonstop2h 21mAmerican Airlines
Deal found 6/1$189
Mon 7/86:10 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Tue 7/163:26 pmDCA - STL
Nonstop2h 21mAmerican Airlines
Deal found 6/1$199
Mon 7/156:10 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Fri 7/198:00 pmDCA - STL
Nonstop2h 29mAmerican Airlines
Deal found 6/1$209
Fri 7/266:17 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Mon 7/298:00 pmDCA - STL
Nonstop2h 29mAmerican Airlines
Deal found 6/1$233
Wed 7/246:10 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Sun 7/288:00 pmDCA - STL
Nonstop2h 29mAmerican Airlines
Deal found 6/1$244
Tue 7/28:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sat 7/68:15 amIAD - STL
Nonstop2h 07mUnited Airlines
Deal found 5/31$253
Thu 7/116:10 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Sun 7/148:00 pmDCA - STL
Nonstop2h 29mAmerican Airlines
Deal found 6/1$254
Tue 7/26:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Sat 7/61:59 pmDCA - STL
Nonstop2h 24mAmerican Airlines
Deal found 5/31$259
Fri 8/168:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sun 8/188:15 amIAD - STL
Nonstop2h 07mUnited Airlines
Deal found 6/1$266

St. Louis to Washington, D.C. flights leaving soon

Find last-minute flight options from St. Louis to Washington, D.C. for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Check out these flights departing soon from St. Louis to Washington, D.C.. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Tue 6/113:23 pmSTL - BWI
1 stop23h 38mSpirit Airlines
Wed 6/1210:45 pmBWI - STL
2 stops21h 37mSpirit Airlines
Deal found 6/1$164
Tue 6/113:23 pmSTL - BWI
1 stop23h 38mSpirit Airlines
Wed 6/1210:45 pmBWI - STL
1 stop19h 43mSpirit Airlines
Deal found 6/1$172
Sat 6/88:02 pmSTL - DCA
1 stop15h 05mFrontier
Tue 6/1112:59 pmDCA - STL
1 stop21h 30mFrontier
Deal found 6/1$204
Tue 6/1111:57 amSTL - BWI
2 stops10h 54mSpirit Airlines
Wed 6/1210:45 pmBWI - STL
2 stops21h 37mSpirit Airlines
Deal found 6/1$204
Mon 6/106:16 pmSTL - BWI
1 stop19h 25mFrontier
Tue 6/118:48 pmBWI - STL
1 stop13h 41mFrontier
Deal found 6/1$215
Wed 6/128:02 pmSTL - DCA
1 stop20h 58mFrontier
Wed 6/196:59 pmDCA - STL
1 stop20h 33mFrontier
Deal found 6/1$218
Fri 6/77:44 pmSTL - BWI
1 stop18h 04mFrontier
Tue 6/118:48 pmBWI - STL
1 stop13h 41mFrontier
Deal found 6/1$220
Mon 6/108:22 pmSTL - DCA
1 stop14h 43mFrontier
Tue 6/116:59 pmDCA - STL
1 stop15h 30mFrontier
Deal found 6/1$224
Tue 6/116:08 amSTL - DCA
1 stop4h 42mAmerican Airlines
Tue 6/113:26 pmDCA - STL
Nonstop2h 25mAmerican Airlines
Deal found 6/1$225

One-way flights to Washington, D.C. from St. Louis

Search for one-way flight options from St. Louis to Washington, D.C.. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Users in need of a one-way flight from St. Louis to Washington, D.C. can choose from these deals. Users in need of a round-trip flight from St. Louis to Washington, D.C. instead should update the search form at the top of page.
Tue 6/113:23 pmSTL - BWI
1 stop23h 38mSpirit Airlines
Deal found 6/1$55
Wed 9/46:22 pmSTL - DCA
Nonstop2h 08mAmerican Airlines
Deal found 6/1$85
Tue 6/1111:57 amSTL - BWI
2 stops10h 54mSpirit Airlines
Deal found 6/1$87
Fri 9/134:31 pmSTL - BWI
2 stops15h 11mSpirit Airlines
Deal found 6/1$91
Sun 6/305:22 pmSTL - BWI
1 stop14h 13mSpirit Airlines
Deal found 6/1$93
Wed 9/46:00 amSTL - DCA
1 stop5h 45mDelta
Deal found 6/1$94
Tue 7/24:02 pmSTL - IAD
1 stop6h 57mDelta
Deal found 6/1$94
Tue 10/2210:08 amSTL - DCA
Nonstop2h 06mAmerican Airlines
Deal found 6/1$95
Fri 9/138:00 pmSTL - BWI
1 stop15h 03mFrontier
Deal found 6/1$98

Find flights from St. Louis to Washington, D.C. within your budget

Customize your flight search to find flights from St. Louis to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$167 - $250

Route

Depart

Return

Price

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Wed 9/18

1 stop23h 41m

Baltimore/Washington

Sun 9/22

1 stop8h 49m

$167

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Thu 6/27

1 stop13h 13m

Baltimore/Washington

Sat 6/29

1 stop22h 14m

$180

Lambert-St LouisWashington, D.C. Reagan-National

STL - DCA

STLDCA

Lambert-St Louis

Mon 7/1

1 stop6h 18m

Washington, D.C. Reagan-National

Fri 7/5

1 stop6h 45m

$188

Lambert-St LouisWashington, D.C. Reagan-National

STL - DCA

STLDCA

Lambert-St Louis

Wed 7/10

Nonstop2h 01m

Washington, D.C. Reagan-National

Tue 7/16

Nonstop2h 29m

$189

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Tue 6/18

1 stop10h 53m

Baltimore/Washington

Sat 6/22

1 stop11h 52m

$189

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Fri 9/20

1 stop13h 10m

Baltimore/Washington

Sun 9/22

1 stop8h 49m

$193

Lambert-St LouisWashington, D.C. Reagan-National

STL - DCA

STLDCA

Lambert-St Louis

Thu 6/20

1 stop19h 37m

Washington, D.C. Reagan-National

Mon 6/24

1 stop20h 48m

$214

Lambert-St LouisWashington, D.C. Dulles Intl

STL - IAD

STLIAD

Lambert-St Louis

Fri 8/16

Nonstop2h 10m

Washington, D.C. Dulles Intl

Sun 8/18

1 stop5h 23m

$219

Lambert-St LouisWashington, D.C. Dulles Intl

STL - IAD

STLIAD

Lambert-St Louis

Tue 6/18

1 stop13h 56m

Washington, D.C. Dulles Intl

Sat 6/22

1 stop8h 21m

$250

Flights are sorted by cheapest first

Deals found on 6/1

How far ahead should I book a flight from St. Louis to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Washington, D.C.. Price data was last updated on May 31, 2024.
Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

What is the cheapest day to fly from St. Louis to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Washington, D.C.. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Washington, D.C. flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from St. Louis to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated June 2, 2024.
Peruse reviews from past customers who have flown with United Airlines, Delta and Sun Country Air from St. Louis to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,198 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Alaska Airlines
8.1
Very good
9,198 reviews
Alaska Airlines
8.1
Very good
9,198 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Delta
8.0
Very good
10,410 reviews
Alaska Airlines
8.1
Very good
9,198 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Qatar Airways
7.7
Good
4,324 reviews
Alaska Airlines
8.1
Very good
9,198 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

United Airlines
7.4
Good
10,755 reviews
Alaska Airlines
8.1
Very good
9,198 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

American Airlines
7.3
Good
14,260 reviews
Alaska Airlines
8.1
Very good
9,198 reviews
Check prices

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Washington, D.C.?

    If you book a flight to Washington, D.C. from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 11 flights from Lambert-St Louis to Washington, D.C. per day from 5 different airlines.

  • Can I find flights from St. Louis to Washington, D.C. for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Washington, D.C. for under $200. The cheapest flight booked recently is on Spirit Airlines for just $167, but on average you can expect to pay $198.

  • Are there nonstop flights from St. Louis to Washington, D.C. for under $200 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Washington, D.C. under $200. A good price for a nonstop flight from St. Louis to Washington, D.C. is less than $296.

  • Are there last-minute flights available from St. Louis to Washington, D.C. for under $200?

    There are currently 20+ open flights from St. Louis to Washington, D.C. within the next 7 days for less than $200.

  • What are the cheapest airlines flying from St. Louis to Washington, D.C. round-trip?

    Flying on Spirit Airlines is currently your cheapest option to Washington, D.C., with prices starting at $167. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $188 and $189, respectively. Spirit Airlines is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Washington, D.C. one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $55. Users have also found prices from $85 and $94 on American Airlines and Delta, respectively.

  • What are the most popular routes from St. Louis to Washington, D.C.?

    The most popular route from St. Louis to Washington, D.C. is Lambert-St Louis - Washington, D.C. Dulles Intl. You may also consider Lambert-St Louis - Washington, D.C. Reagan-National or Lambert-St Louis - Baltimore/Washington.

  • What are the most reliable airlines from St. Louis to Washington, D.C.?

    The top 3 most reliable airlines when flying from St. Louis to Washington, D.C. are Avianca (95%), Copa Airlines (95%) and Scandinavian Airlines (93%).

  • What are the cheapest flights from St. Louis to Washington, D.C.?

    While on average a flight from St. Louis to Washington, D.C. is generally $2,101, our data shows the cheapest flight currently is $154. When looking at the most popular route, (Lambert-St Louis - Washington, D.C. Dulles Intl), you can expect to pay $198 for that flight.

  • What does STL to IAD mean?

    STL and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. STL to IAD refers to a flight route from Lambert-St Louis Airport to Washington, D.C. Dulles Intl Airport. Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from St. Louis to Washington, D.C. that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Washington, D.C. flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Washington, D.C. with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Washington, D.C. flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on St. Louis to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Washington, D.C..

  • Can I find deals for business class flights from St. Louis to Washington, D.C.?

    Yes. Cheapflights offers flight deals from St. Louis to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Washington, D.C. that allow pets onboard?

    Many airlines flying from St. Louis to Washington, D.C. offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Washington, D.C.?

    Yes, you can often find last-minute deals on St. Louis to Washington, D.C. flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Washington, D.C. flight deals updated?

    The St. Louis to Washington, D.C. flight deals you see on this page were last updated on 6/1.

  • What are the most popular airlines that fly from St. Louis to Washington, D.C.?

    American Airlines, Delta and United Airlines are the most popular airlines when flying from St. Louis to Washington, D.C..

  • What is the cheapest month to book a flight from St. Louis to Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Washington, D.C. (average of $278). Flying from St. Louis to Washington, D.C. in June is currently the most expensive (average of $388). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for St. Louis to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.

St. Louis to Dulles Intl flights
Kansas City to Dulles Intl flights
Kansas City to Reagan-National flights
St. Louis to Reagan-National flights
Springfield to Dulles Intl flights
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Fort Leonard Wood to Reagan-National flights

Top 5 airlines flying from St. Louis to Washington, D.C.

Discover the top 5 airlines that operate flights from St. Louis to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$185FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$144Average$193FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$167Average$304FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$191Average$350FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$195Average$377FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from St. Louis to Washington, D.C. by cabin class

Find flights from St. Louis to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from St. Louis to Washington, D.C.

Find hourly flight availability from St. Louis to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 2, 2024.
7%of flight departuresEarly morningMidnight to 6 am
62%of flight departuresMorning6 am to noon
23%of flight departuresAfternoonNoon to 6 pm
8%of flight departuresEvening6 pm to midnight
Midnight
6 AM
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6 PM

Weekly flight availability from St. Louis to Washington, D.C.

Explore weekly flight availability from St. Louis to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 2, 2024.
Sunday10daily flights
Monday13daily flights
Tuesday12daily flights
Wednesday13daily flights
Thursday12daily flights
Friday13daily flights
Saturday10daily flights

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Need flexible booking options for your flight to Washington, D.C. from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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