$119 Cheap Flights from Seattle (SEA) to Boston (BOS)

View $119 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Logan International Airport (BOS)

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Today's featured flight deals from Seattle-Tacoma International Airport (SEA) to Logan International Airport (BOS)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Seattle to Boston (SEA-BOS)

Prices were available within the past 7 days and start at $119 for one-way flights and $192 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Feb 18 - Mon, Feb 23
SEA
Seattle
BOS
Boston
$192 Roundtrip, found 4 days ago
$192
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Feb 18 from Seattle to Boston, returning Mon, Feb 23, priced at $192 found 4 days ago
Southwest Airlines
Tue, Feb 10 - Tue, Feb 17
SEA
Seattle
BOS
Boston
$194 Roundtrip, found 2 days ago
$194
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Tue, Feb 10 from Seattle to Boston, returning Tue, Feb 17, priced at $194 found 2 days ago
Delta
Wed, Dec 17 - Wed, Jan 7
SEA
Seattle
BOS
Boston
$209 Roundtrip, found 4 days ago
$209
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Dec 17 from Seattle to Boston, returning Wed, Jan 7, priced at $209 found 4 days ago
Delta
Sat, Nov 8 - Sat, Nov 15
SEA
Seattle
BOS
Boston
$213 Roundtrip, just found
$213
Roundtrip
just found
Select Delta flight, departing Sat, Nov 8 from Seattle to Boston, returning Sat, Nov 15, priced at $213 just found
Delta
Fri, Nov 14 - Wed, Nov 19
SEA
Seattle
BOS
Boston
$215 Roundtrip, found 1 hour ago
$215
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Nov 14 from Seattle to Boston, returning Wed, Nov 19, priced at $215 found 1 hour ago
Delta
Sat, Nov 15 - Tue, Nov 18
SEA
Seattle
BOS
Boston
$216 Roundtrip, found 6 hours ago
$216
Roundtrip
found 6 hours ago
Select Delta flight, departing Sat, Nov 15 from Seattle to Boston, returning Tue, Nov 18, priced at $216 found 6 hours ago
Alaska Airlines
Sat, Nov 15 - Tue, Nov 18
SEA
Seattle
BOS
Boston
$216 Roundtrip, found 6 hours ago
$216
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Sat, Nov 15 from Seattle to Boston, returning Tue, Nov 18, priced at $216 found 6 hours ago
United
Sat, Nov 8 - Sat, Nov 15
SEA
Seattle
BOS
Boston
$217 Roundtrip, just found
$217
Roundtrip
just found
Select United flight, departing Sat, Nov 8 from Seattle to Boston, returning Sat, Nov 15, priced at $217 just found
American Airlines
Sun, Nov 23 - Wed, Dec 10
SEA
Seattle
BOS
Boston
$218 Roundtrip, found 4 days ago
$218
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Nov 23 from Seattle to Boston, returning Wed, Dec 10, priced at $218 found 4 days ago
Southwest Airlines
Sat, Nov 15 - Tue, Nov 18
SEA
Seattle
BOS
Boston
$219 Roundtrip, found 6 hours ago
$219
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Sat, Nov 15 from Seattle to Boston, returning Tue, Nov 18, priced at $219 found 6 hours ago

Find the cheapest month to fly from Seattle (SEA) to Boston (BOS)

March is typically the cheapest month to fly

From $156 - $316 per traveler.

Alternative airports near Boston

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Logan Intl. BOS. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $212
BOS
Logan Intl.
CheapestClosest
Average driving time to city center7 min
Flights from $212

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) cost?
Get a cheap one-way flight from $119 or cheap return flight from $192 from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
The cheapest month to fly from SEA to BOS is February, when there's less demand. Off-peak months are generally when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
Select from 3 airlines that fly directly from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS). These include:

  • Delta Air Lines
  • Alaska Airlines
  • JetBlue Airways

How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
With, on average, 4 nonstop flights that operate from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) every day, you'll be on your way in no time.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
The 3 PM departures from SEA to BOS are the top choice for many travelers. These flights can come with a higher price due to their popularity. If you want to save money, pick a less crowded time to fly.
What day of the week has the most flights from SEA to BOS?
Friday offers the most flights from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS). Consider jetting off on this day and you'll have a greater chance of finding a departure that works with your plans.
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
Hop on the earliest flight at around 7:30AM UTC-8, departing from Seattle - Tacoma Intl. Airport (SEA). You'll be traveling for about 5h 29m, arriving at Logan Intl. Airport (BOS) at approximately 3:59PM UTC-5.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
The average flight time from SEA to BOS is 5 hours and 22 minutes, covering a distance of 2,500 mi.
What airline has the least delays from SEA to BOS?
Delta Air Lines has the best performance for on-time direct flights from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS), with an on-time score of 84%. Use the Expedia App to see your flight schedule before you leave and get notified of any trip changes.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
To avoid potential delays on the Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) route, fly before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Boston from Seattle - Tacoma Intl. Airport (SEA)?
Check out your flight options from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS). This is the only Boston airport you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) last-minute?
Booking your ticket from SEA to BOS right before your getaway is usually more expensive. But if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a SEA to BOS flight and hotel package?
Opting for a SEA to BOS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Choose from our impressive range of hotels and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
Typically, you can reschedule or cancel your SEA to BOS flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you need more information, visit our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$192
Distance
2487 mi
Average flight time
8 hours 24 mins

Book with confidence

Seattle to Boston Flights

The cheapest times to fly from Seattle to Boston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Boston are during the month of February. You can find some of the cheapest flights from Seattle to Boston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Boston

Sunday is one of the best days to book for cheap flights from Seattle to Boston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Boston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $119 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Boston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Boston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Boston Flights

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