How do most travelers feel about Delta?

Delta has received a 6.4/10 rating from 8,617 Cheapflights user reviews. If you wish to plan your next trip from Seattle to Boston with Delta, enter your preferred travel dates above!

Can I get a flight from Seattle to Boston on Delta for under $400?

Seattle to Boston flights on Delta are currently available under $400. 18 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.

Currently, the most affordable month to book a Delta flight from Seattle to Boston in January, with an average price of $218. Conversely, traveling with Delta from Seattle to Boston in July will be the most expensive, with an average cost of $328. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

Fly Delta from SEA to BOS as low as $149

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Cheapflights users flying from Seattle to Boston on Delta typically fly into Boston Logan Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Delta flights from Seattle to Boston in 2024

Popular in	July
Cheapest in	January
Average price (all airlines)	$397
One-way from	$149
Round-trip from	$297

Highest demand for flights from Seattle/Tacoma Intl to Boston Logan Intl; 22% potential price increase.

Search Deals

Best time to find cheap flights from Seattle/Tacoma Intl to Boston Logan Intl; 3% potential price drop.

Search Deals

Average price for all Seattle/Tacoma Intl to Boston Logan Intl flights (one-way and round-trip).

Search Deals

Cheapest one-way Delta flight from Seattle/Tacoma Intl to Boston Logan Intl

Search Deals

Cheapest round-trip Delta flight from Seattle/Tacoma Intl to Boston Logan Intl

Search Deals

Can I get a flight from Seattle to Boston on Delta for under $400?
Seattle to Boston flights on Delta are currently available under $400. 18 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.
How do most travelers feel about Delta?
Delta has received a 6.4/10 rating from 8,617 Cheapflights user reviews. If you wish to plan your next trip from Seattle to Boston with Delta, enter your preferred travel dates above!

Cheapest Delta flights from Seattle to Boston

Mon 6/33:27 pmSEA - BOS

Nonstop5h 32mDelta

Fri 6/77:30 amBOS - SEA

Nonstop6h 15mDelta

Deal found 5/27$397

Pick Dates

Sat 6/811:25 pmSEA - BOS

Nonstop5h 27mDelta

Sat 6/156:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/28$402

Pick Dates

Fri 6/1411:25 pmSEA - BOS

Nonstop5h 27mDelta

Wed 6/196:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/28$407

Pick Dates

Direct flights from Seattle to Boston on Delta

Wed 10/2310:00 pmSEA - BOS

Nonstop5h 20mDelta

Tue 10/296:35 pmBOS - SEA

Nonstop6h 21mDelta

Deal found 5/28$297

Pick Dates

Tue 9/2410:00 pmSEA - BOS

Nonstop5h 20mDelta

Sat 10/56:35 pmBOS - SEA

Nonstop6h 21mDelta

Deal found 5/28$307

Pick Dates

Mon 9/910:00 pmSEA - BOS

Nonstop5h 20mDelta

Wed 9/116:35 pmBOS - SEA

Nonstop6h 21mDelta

Deal found 5/28$317

Pick Dates

Last minute deals on Cheapflights

Mon 6/33:27 pmSEA - BOS

Nonstop5h 32mDelta

Fri 6/77:30 amBOS - SEA

Nonstop6h 15mDelta

Deal found 5/27$397

Pick Dates

Sun 6/212:40 amSEA - BOS

1 stop7h 10mDelta

Tue 6/46:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/28$472

Pick Dates

Fri 6/712:40 amSEA - BOS

1 stop7h 18mDelta

Sat 6/156:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/28$477

Pick Dates

One-way Delta flights to Boston from Seattle

Tue 9/2410:00 pmSEA - BOS

Nonstop5h 20mDelta

Deal found 5/28$149

Pick Dates

Mon 9/910:00 pmSEA - BOS

Nonstop5h 20mDelta

Deal found 5/27$169

Pick Dates

Wed 11/2010:00 pmSEA - BOS

Nonstop5h 20mDelta

Deal found 5/28$179

Pick Dates

Best time to book a flight from Seattle to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Seattle with our price prediction graph.

Estimated round-trip price

Temperature and rainfall in Boston by month

BOS Temperature	30.2 - 73.4 °F

BOS

Temperature

30.2 - 73.4 °F

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Browse thousands of different options on Cheapflights for your next trip

Fly from Seattle to Boston on another airline
Consider alternative airlines that service the Boston area. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

JetBlue flights from Seattle/Tacoma Intl to Boston Logan Intl

Alaska Airlines flights from Seattle/Tacoma Intl to Boston Logan Intl

Other Delta flights from Seattle
Browse through other Delta flights departing from Seattle. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Delta flights from Seattle to Sky Harbor Intl

Delta flights from Seattle to Los Angeles

Delta flights from Seattle to San Diego

Delta flights from Seattle to Cancún

Delta flights from Seattle to Boston

Delta flights from Seattle to Honolulu

Delta flights from Seattle to New York

Delta flights from Seattle to Santa Ana

Delta flights from Seattle to Tokyo

Delta flights from Seattle to San José del Cabo

Delta flights from Seattle to San Francisco

Delta flights from Seattle to Minneapolis

Delta flights from Seattle to Chicago

Delta flights from Seattle to Kahului

Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.

Boston car rentals

Boston Logan Intl Airport car rentals

Manchester Airport car rentals

Bedford Hanscom Field Airport car rentals

Worcester car rentals

Springfield car rentals

Hyannis car rentals

New Bedford car rentals

Chicopee car rentals

Downtown car rentals

Back Bay car rentals

Fenway–Kenmore car rentals

Other popular destinations in North America
If Boston is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Flights to New York

Flights to Los Angeles

Flights to San Francisco

Flights to Fort Lauderdale

Popular flights with Delta
Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Delta flights from Boston Logan Intl to Seattle/Tacoma Intl

Delta flights from Seattle to Los Angeles

Delta flights from Seattle to San Francisco

Delta flights from Seattle to Los Angeles

Delta flights from Seattle to Sky Harbor Intl

Delta flights from Seattle to San Francisco

Delta flights from Seattle to Cancún

Delta flights from Seattle to Honolulu

Delta flights from Seattle to Boston

Delta flights from Seattle to New York

Delta flights from Seattle to Cancún

Delta flights from Seattle to Los Angeles

Delta flights from Seattle to San Francisco

Delta flights from Seattle to Boston

Delta flights from Seattle to New York

Delta flights from Seattle to Sky Harbor Intl

Delta flights from Seattle to New York

Delta flights from Seattle to Minneapolis

Delta flights from Seattle to Tokyo

Delta flights from Seattle to Los Angeles

Delta flights from Seattle to Minneapolis

Delta flights from Seattle to San Francisco

Delta flights from Seattle to San Diego

Delta flights from Seattle to Minneapolis

See what others are saying about Delta

Delta

8.0

Very good

10,476 reviews

Check prices

Overview

Recent reviews

3.9

Poor|Oct 2021

There were complications with my flights boarding in spokane and my secondary flight was changed without my consent to one that boarded at the same time as my first flight let me out on the opposite side of the massivr layover airport. It was only because an employee saw my struggle and confusion and hooked me up with a ride that I even made the flight dispite delta's best efforts. My TV's headphone jack on my first flight was also busted which sucked to find out after buying headphones on the flight. About halfway through the flight one of the attendants moved me to a seat with a working TV. Long story short Delta as an airline was terrible but their employees did their best to help me with what limited options they had to work with.

6.0

Okay|Apr 2022

No entertainment, five hour flight and choice of pretzels or a cookie. Still a place to put your cigarette in the restroom on board. How old is the plane?

5.9

Fair|Oct 2021

The staff was the highlight. Only thing that could have been better was the temperature on the flight from Hawaii to Seattle. The plane was too cold to get comfortable

10.0

Wonderful|Aug 2021

No complaints!!

2.0

Poor|Oct 2021

I never took this flight and was never able to cancel it in Kayak’s system! I will never book through Kayak again. The flight was probably fine. Next time I will only book with the airline directly. I would caution anyone else to do the same.

1 out of 3492

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

View all available airlines

Cheapflights users flying from Seattle to Boston on Delta typically fly into Boston Logan Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Delta flights from Seattle to Boston in 2024

Find detailed information about Delta flights from Seattle to Boston. Explore the options provided by Delta to plan your journey from Seattle to Boston. Data last updated May 28, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Seattle to Boston on Delta for under $400?

How do most travelers feel about Delta?

Cheapest Delta flights from Seattle to Boston

Direct flights from Seattle to Boston on Delta

Last minute deals on Cheapflights

One-way Delta flights to Boston from Seattle

Best time to book a flight from Seattle to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Seattle with our price prediction graph.

Temperature and rainfall in Boston by month

Plan your trip to Boston by taking into account the average temperature and rainfall totals by month.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Seattle to Boston on another airline
Consider alternative airlines that service the Boston area. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Consider alternative airlines that service the Boston area. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Other Delta flights from Seattle
Browse through other Delta flights departing from Seattle. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Browse through other Delta flights departing from Seattle. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.

Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.

Other airlines servicing Seattle and Boston
Choose from other airlines serving Seattle and Boston.

Choose from other airlines serving Seattle and Boston.

Other popular destinations in North America
If Boston is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

If Boston is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Popular flights with Delta
Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 28, 2024.

See what others are saying about Delta

Overview

Recent reviews

100% Free

Book with Flexibility

Travel Smart

Flights

Delta flights from Seattle to Boston (SEA - BOS)

Cheapflights users flying from Seattle to Boston on Delta typically fly into Boston Logan Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Delta flights from Seattle to Boston in 2024

Find detailed information about Delta flights from Seattle to Boston. Explore the options provided by Delta to plan your journey from Seattle to Boston. Data last updated May 28, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Seattle to Boston on Delta for under $400?

How do most travelers feel about Delta?

Cheapest Delta flights from Seattle to Boston

Direct flights from Seattle to Boston on Delta

Last minute deals on Cheapflights

One-way Delta flights to Boston from Seattle

Best time to book a flight from Seattle to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Seattle with our price prediction graph.

Temperature and rainfall in Boston by month

Plan your trip to Boston by taking into account the average temperature and rainfall totals by month.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Seattle to Boston on another airlineConsider alternative airlines that service the Boston area. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

Consider alternative airlines that service the Boston area. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.

See what others are saying about Delta

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from Seattle to Boston on another airline
Consider alternative airlines that service the Boston area. Flight routes are based on user searches made on Cheapflights and were last updated on May 28, 2024.