How do most travelers feel about Delta?

Delta has received a 6.4/10 rating from 8,616 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. 29 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.

How far ahead should I book a flight from Seattle to Boston with Delta?

Booking with Delta 31 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Boston with Delta?

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

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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.

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

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

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

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

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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. 29 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 8,616 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

Thu 6/67:45 amSEA - BOS

Nonstop5h 37mDelta

Wed 6/126:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/30$395

Pick Dates

Wed 6/53:27 pmSEA - BOS

Nonstop5h 32mDelta

Wed 6/126:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/29$397

Pick Dates

Thu 6/610:31 pmSEA - BOS

Nonstop5h 28mDelta

Wed 6/126:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/29$399

Pick Dates

Direct flights from Seattle to Boston on Delta

Tue 10/810:00 pmSEA - BOS

Nonstop5h 20mDelta

Wed 10/166:35 pmBOS - SEA

Nonstop6h 21mDelta

Deal found 5/29$297

Pick Dates

Tue 9/2410:00 pmSEA - BOS

Nonstop5h 20mDelta

Sat 10/56:35 pmBOS - SEA

Nonstop6h 21mDelta

Deal found 5/29$307

Pick Dates

Mon 9/910:00 pmSEA - BOS

Nonstop5h 20mDelta

Wed 9/116:35 pmBOS - SEA

Nonstop6h 21mDelta

Deal found 5/29$317

Pick Dates

Last minute deals on Cheapflights

Thu 6/67:45 amSEA - BOS

Nonstop5h 37mDelta

Wed 6/126:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/30$395

Pick Dates

Wed 6/53:27 pmSEA - BOS

Nonstop5h 32mDelta

Wed 6/126:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/29$397

Pick Dates

Thu 6/610:31 pmSEA - BOS

Nonstop5h 28mDelta

Wed 6/126:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 5/29$399

Pick Dates

One-way Delta flights to Boston from Seattle

Wed 9/2510:00 pmSEA - BOS

Nonstop5h 20mDelta

Deal found 5/29$149

Pick Dates

Sat 10/1910:00 pmSEA - BOS

Nonstop5h 20mDelta

Deal found 5/29$159

Pick Dates

Thu 9/263:30 pmSEA - BOS

Nonstop5h 23mDelta

Deal found 5/30$169

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).

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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 30, 2024.

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

JetBlue 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 30, 2024.

Delta flights from Seattle to Sky Harbor Intl

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Delta flights from Seattle to Boston

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Delta flights from Seattle to San José del Cabo

Delta flights from Seattle to San Francisco

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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.

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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 30, 2024.

Flights to New York

Flights to Los Angeles

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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 30, 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 San Francisco

Delta flights from Seattle to Cancún

Delta flights from Seattle to Los Angeles

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 Los Angeles

Delta flights from Seattle to Tokyo

Delta flights from Seattle to Minneapolis

Delta flights from Seattle to San Diego

Delta flights from Seattle to San Francisco

Delta flights from Seattle to Boston

Delta flights from Seattle to Minneapolis

See what others are saying about Delta

Delta

8.0

Very good

10,457 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.

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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 30, 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 30, 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 30, 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 30, 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 30, 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 30, 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 30, 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 30, 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 30, 2024.

See what others are saying about Delta

Overview

Recent reviews

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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 30, 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 30, 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 30, 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 30, 2024.