How do most travelers feel about Delta?

Cheapflights users who travel with Delta (a popular airline from Boston to Seattle) have rated them a 6.4/10. This rating comes from 8,739 reviews. If you are looking to travel BOS-SEA, search your dates above.

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

Cheapflights users have found 11 Delta flights for under $400 on the BOS-SEA route. Prices on flights to Seattle from Boston can vary based on many factors including dates. To look at price based on your preferred dates, click here.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Fly Delta from BOS to SEA as low as $164

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

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

Delta flights from Boston to Seattle in 2024

Popular in	June
Cheapest in	January
Average price (all airlines)	$318
One-way from	$164
Round-trip from	$327

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

Search Deals

Best time to find cheap flights from Boston Logan Intl to Seattle/Tacoma Intl; 4% potential price drop.

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Can I get a flight from Boston to Seattle on Delta for under $400?
Cheapflights users have found 11 Delta flights for under $400 on the BOS-SEA route. Prices on flights to Seattle from Boston can vary based on many factors including dates. To look at price based on your preferred dates, click here.
How do most travelers feel about Delta?
Cheapflights users who travel with Delta (a popular airline from Boston to Seattle) have rated them a 6.4/10. This rating comes from 8,739 reviews. If you are looking to travel BOS-SEA, search your dates above.

Cheapest Delta flights from Boston to Seattle

Sat 5/256:55 pmBOS - SEA

Nonstop6h 17mDelta

Fri 5/317:45 amSEA - BOS

Nonstop5h 37mDelta

Deal found 4/27$327

Pick Dates

Tue 5/286:55 pmBOS - SEA

Nonstop6h 17mDelta

Fri 5/313:27 pmSEA - BOS

Nonstop5h 32mDelta

Deal found 4/27$342

Pick Dates

Mon 5/276:30 amBOS - SEA

Nonstop6h 17mDelta

Mon 6/33:27 pmSEA - BOS

Nonstop5h 32mDelta

Deal found 4/27$347

Pick Dates

Direct flights from Boston to Seattle on Delta

Sat 5/256:55 pmBOS - SEA

Nonstop6h 17mDelta

Fri 5/317:45 amSEA - BOS

Nonstop5h 37mDelta

Deal found 4/27$327

Pick Dates

Tue 5/286:55 pmBOS - SEA

Nonstop6h 17mDelta

Fri 5/313:27 pmSEA - BOS

Nonstop5h 32mDelta

Deal found 4/27$342

Pick Dates

Mon 5/276:30 amBOS - SEA

Nonstop6h 17mDelta

Mon 6/33:27 pmSEA - BOS

Nonstop5h 32mDelta

Deal found 4/27$347

Pick Dates

Last minute deals on Cheapflights

Sat 5/47:10 pmBOS - SEA

Nonstop6h 15mDelta

Tue 5/710:31 pmSEA - BOS

Nonstop5h 28mDelta

Deal found 4/27$327

Pick Dates

Wed 5/86:55 pmBOS - SEA

Nonstop6h 17mDelta

Sun 5/127:45 amSEA - BOS

Nonstop5h 37mDelta

Deal found 4/28$367

Pick Dates

Mon 5/67:35 pmBOS - SEA

Nonstop6h 19mDelta

Fri 5/107:45 amSEA - BOS

Nonstop5h 37mDelta

Deal found 4/28$427

Pick Dates

One-way Delta flights to Seattle from Boston

Wed 5/296:30 amBOS - SEA

Nonstop6h 17mDelta

Deal found 4/27$164

Pick Dates

Tue 5/286:55 pmBOS - SEA

Nonstop6h 17mDelta

Deal found 4/27$179

Pick Dates

Mon 5/276:30 amBOS - SEA

Nonstop6h 17mDelta

Deal found 4/27$184

Pick Dates

Average price of Delta flights from Boston to Seattle

Currently, the most affordable month to book a Delta flight from Boston to Seattle in December, with an average price of $244. Conversely, traveling with Delta from Boston to Seattle in July will be the most expensive, with an average cost of $408. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

January

$247

February

$254

March

$288

April

$295

May

$317

June

$407

July

$408

August

$343

September

$278

October

$257

November

$258

December

$244

Temperature and rainfall in Seattle by month

SEA Temperature	41 - 66.2 °F

SEA

Temperature

41 - 66.2 °F

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Browse thousands of different options on Cheapflights for your next trip

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

JetBlue flights from Boston Logan Intl to Seattle/Tacoma Intl

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

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

Delta flights from Boston to Las Vegas

Delta flights from Boston to Atlanta

Delta flights from Boston to Orlando

Delta flights from Boston to Luis Munoz Marin Intl

Delta flights from Boston to Los Angeles

Delta flights from Boston to Tampa

Delta flights from Boston to Fort Lauderdale

Delta flights from Boston to Denver

Delta flights from Boston to Seattle

Delta flights from Boston to Athens

Delta flights from Boston to Salt Lake City

Delta flights from Boston to Cancún

Delta flights from Boston to Dublin

Delta flights from Boston to San Francisco

Delta flights from Boston to Sky Harbor Intl

Delta flights from Boston to West Palm Beach

Delta flights from Boston to Fort Myers

Delta flights from Boston to Dallas/Fort Worth

Delta flights from Boston to Minneapolis

Delta flights from Boston to Paris

Delta flights from Boston to Jacksonville

Delta flights from Boston to Oranjestad

Delta flights from Boston to Rome

Delta flights from Boston to San Diego

Delta flights from Boston to New Orleans

Delta flights from Boston to Lisbon

Delta flights from Boston to Nashville

Delta flights from Boston to Chicago

Delta flights from Boston to Raleigh

Delta flights from Boston to Reagan-National

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

Seattle car rentals

Seattle/Tacoma Intl Airport car rentals

Kenmore Air Harbor Airport car rentals

Spokane car rentals

Bellingham car rentals

Pasco car rentals

Walla Walla car rentals

Yakima car rentals

Wenatchee car rentals

Pullman car rentals

Capitol Hill car rentals

West Seattle car rentals

Other popular destinations in North America
If Seattle 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 April 28, 2024.

Flights to New York

Flights to Los Angeles

Flights to Fort Lauderdale

Flights to San Francisco

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 April 28, 2024.

Delta flights from Seattle/Tacoma Intl to Boston Logan Intl

Delta flights from New York to Paris

Delta flights from New York to Denver

Delta flights from Minneapolis to Las Vegas

Delta flights from John F Kennedy Intl to Santiago de los Caballeros

Delta flights from New York to Fort Lauderdale

Delta flights from New York to Tampa

Delta flights from San Francisco to Los Angeles

Delta flights from Los Angeles to San Francisco

Delta flights from Seattle to Sky Harbor Intl

Delta flights from New York to Atlanta

Delta flights from Los Angeles to Seattle

Delta flights from John F Kennedy Intl to Fort Lauderdale

Delta flights from Los Angeles to Orlando

Delta flights from New York to Luis Munoz Marin Intl

Delta flights from Atlanta to Las Vegas

Delta flights from John F Kennedy Intl to Santo Domingo

Delta flights from Los Angeles to New Orleans

Delta flights from Portland to Los Angeles

Delta flights from Seattle to Los Angeles

Delta flights from New York to Orlando

Delta flights from New York to Tel Aviv

Delta flights from New York to New Orleans

Delta flights from Los Angeles to Portland

Delta flights from Los Angeles to Las Vegas

Delta flights from New York to Salt Lake City

Delta flights from Seattle to San Diego

Delta flights from Minneapolis to Sky Harbor Intl

Delta flights from John F Kennedy Intl to Las Vegas

Delta flights from New York to West Palm Beach

Delta flights from Atlanta to Los Angeles

See what others are saying about Delta

Delta

8.0

Very good

10,932 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|Nov 2021

KLM flight sucks! Not very active about telling passengers to put in their mask over the nose. 🙄

1 out of 3644

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

Delta flights from Boston to Seattle in 2024

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

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

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

How do most travelers feel about Delta?

Cheapest Delta flights from Boston to Seattle

Direct flights from Boston to Seattle on Delta

Last minute deals on Cheapflights

One-way Delta flights to Seattle from Boston

Average price of Delta flights from Boston to Seattle

Plan your Delta flight from Boston to Seattle by taking into account the cheapest months to travel. The average price of a one-way Delta flight from Boston to Seattle is currently $176 while a round-trip flight costs $339. Price data was last updated on April 21, 2024.

Temperature and rainfall in Seattle by month

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

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

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

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

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

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

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

Choose from other airlines serving Boston and Seattle.

Other popular destinations in North America
If Seattle 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 April 28, 2024.

If Seattle 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 April 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 April 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 April 28, 2024.

See what others are saying about Delta

Overview

Recent reviews

100% Free

Book with Flexibility

Travel Smart

Flights

Delta flights from Boston to Seattle (BOS - SEA)

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

Delta flights from Boston to Seattle in 2024

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

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

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

How do most travelers feel about Delta?

Cheapest Delta flights from Boston to Seattle

Direct flights from Boston to Seattle on Delta

Last minute deals on Cheapflights

One-way Delta flights to Seattle from Boston

Average price of Delta flights from Boston to Seattle

Plan your Delta flight from Boston to Seattle by taking into account the cheapest months to travel. The average price of a one-way Delta flight from Boston to Seattle is currently $176 while a round-trip flight costs $339. Price data was last updated on April 21, 2024.

Temperature and rainfall in Seattle by month

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

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

See what others are saying about Delta

Overview

100% Free

Book with Flexibility

Travel Smart

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