$114 Cheap Flights from Seattle (SEA) to Boston (BOS)

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Cheap flights from Seattle (SEA) to Boston (BOS)

Prices were available within the past 7 days and start at $114 for one-way flights and $219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Sat, Feb 1 - Sat, Feb 1
SEA
Seattle
BOS
Boston
$219 Roundtrip, found 6 hours ago
$219
Roundtrip
found 6 hours ago
Select Bargain Flight flight, departing Sat, Feb 1 from Seattle to Boston, returning Sat, Feb 1, priced at $219 found 6 hours ago
Alaska Airlines
Sat, Feb 1 - Sat, Feb 1
SEA
Seattle
BOS
Boston
$221 Roundtrip, found 6 hours ago
$221
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Sat, Feb 1 from Seattle to Boston, returning Sat, Feb 1, priced at $221 found 6 hours ago
Delta
Sat, Feb 1 - Sat, Feb 1
SEA
Seattle
BOS
Boston
$222 Roundtrip, found 6 hours ago
$222
Roundtrip
found 6 hours ago
Select Delta flight, departing Sat, Feb 1 from Seattle to Boston, returning Sat, Feb 1, priced at $222 found 6 hours ago
Bargain Flight
Sat, Feb 1 - Tue, Feb 4
SEA
Seattle
BOS
Boston
$225 Roundtrip, found 7 hours ago
$225
Roundtrip
found 7 hours ago
Select Bargain Flight flight, departing Sat, Feb 1 from Seattle to Boston, returning Tue, Feb 4, priced at $225 found 7 hours ago
JetBlue Airways
Wed, Jan 29 - Sat, Feb 8
SEA
Seattle
BOS
Boston
$227 Roundtrip, found 2 hours ago
$227
Roundtrip
found 2 hours ago
Select JetBlue Airways flight, departing Wed, Jan 29 from Seattle to Boston, returning Sat, Feb 8, priced at $227 found 2 hours ago
Delta
Sat, Feb 1 - Tue, Feb 4
SEA
Seattle
BOS
Boston
$227 Roundtrip, found 7 hours ago
$227
Roundtrip
found 7 hours ago
Select Delta flight, departing Sat, Feb 1 from Seattle to Boston, returning Tue, Feb 4, priced at $227 found 7 hours ago
Delta
Sat, Feb 1 - Tue, Feb 4
SEA
Seattle
BOS
Boston
$229 Roundtrip, found 7 hours ago
$229
Roundtrip
found 7 hours ago
Select Delta flight, departing Sat, Feb 1 from Seattle to Boston, returning Tue, Feb 4, priced at $229 found 7 hours ago
Bargain Flight
Tue, Oct 22 - Tue, Feb 11
SEA
Seattle
BOS
Boston
$229 Roundtrip, found 1 hour ago
$229
Roundtrip
found 1 hour ago
Select Bargain Flight flight, departing Tue, Oct 22 from Seattle to Boston, returning Tue, Feb 11, priced at $229 found 1 hour ago
Bargain Flight
Tue, Nov 19 - Tue, Nov 19
SEA
Seattle
BOS
Boston
$230 Roundtrip, found 15 hours ago
$230
Roundtrip
found 15 hours ago
Select Bargain Flight flight, departing Tue, Nov 19 from Seattle to Boston, returning Tue, Nov 19, priced at $230 found 15 hours ago
Alaska Airlines
Tue, Nov 5 - Tue, Nov 5
SEA
Seattle
BOS
Boston
$231 Roundtrip, found 7 hours ago
$231
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Tue, Nov 5 from Seattle to Boston, returning Tue, Nov 5, priced at $231 found 7 hours ago
Flight from Seattle to Boston (SEA - BOS) route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Sun Country Airlines, United
Roundtrip price
$218
Distance
2487 mi

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 2024. You can also book with separate airlines for your outbound and return journeys, from $114 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.

Frequently asked questions

How much is a one-way flight from Sea-Tac Airport to Logan Intl. Airport?
Get ready to pack your bags, because Seattle flights to Boston start from just $86. This is based on the cheapest fare found on Expedia for this journey with a departure date within the next three months. This airfare is for an Spirit Airlines flight, taking off from Sea-Tac Airport on October 2 2024 and arriving at BOS. The price of this flight was last updated on September 13 2024 and has not changed since.
How long does it take to fly from Sea-Tac Airport to Logan Intl. Airport (BOS)?
With Alaska Airlines, a direct flight takes about 5 hours and 14 minutes. Step on board the 3:45PM flight from Sea-Tac Airport and come in to land at Logan Intl. Airport at 11:59PM. Get your hands on a top deal on this and other routes when you book your ticket with Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) last minute?
Being a spontaneous soul is a terrific way to travel the world, but it’s not necessarily the wisest way to find a cheap fare. Consider booking your SEA to BOS journey well ahead of time rather than leaving it until the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. You can unleash your spontaneous side when you get to your destination!
What is the cheapest airline flying from SEA to BOS in the next 90 days?
The cheapest airline traveling from Seattle to Boston found on Expedia is Spirit Airlines, which has fares starting from $86. This price is based on airfares found on Expedia with a departure date within the next 90 days. The flight jets off from Sea-Tac Airport on October 2 2024 and arrives at Logan Intl. Airport. The pricing information was updated on September 13 2024 and has not changed since.
What's the cheapest price for a flight from Sea-Tac Airport to Logan Intl. Airport next month?
The lowest price for a one-way flight from Seattle to Boston over the next month is $86. If you’re planning to take off soon, lock in this fare before it’s gone. This ticket price was found after looking through all available flights on Expedia with a departure date within the next 30 days. This airfare is for a one-way Spirit Airlines flight setting off from SEA on October 2 2024 and touching down at Logan Intl. Airport. The price was updated on September 13 2024 and has not changed since.
What airline has the least delays from Sea-Tac Airport to Logan Intl. Airport?
If you don’t want to be stuck in the departure lounge — or worse, have your trip upended due to a flight delay — choose Alaska Airlines. Around 80% of its Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) services land on time. You can check your flight status before traveling to the airport through the Expedia App. It’ll also give you real-time notifications about gate number changes and directions to your hotel. You’ll have all the details in your pocket with our handy travel companion.
Can I find cheap nonstop flights from Sea-Tac Airport to Logan Intl. Airport (BOS) in the next three months?
To give you an idea of prices, the lowest we’ve found for a roundtrip nonstop flight from Seattle to Boston within the next 90 days is $228. This price is based on available flights on Expedia with a departure date within the next three months. This airfare is for a flight via Alaska Airlines taking off from Seattle - Tacoma Intl. Airport (SEA) on October 21 2024 and touching down at BOS, with a return flight on October 24 2024. Pricing information was last updated on September 26 2024.If you want to find nonstop cheap flights setting off from Sea-Tac Airport to Logan Intl. Airport (BOS), use our filters after you’ve hit search. Just click on “Nonstop” under “Filter by” on the left side of the page to review your options. Your results will be arranged from the lowest price, so you’ll see the cheapest nonstop airfares first. You’re also able to compare prices for nearby days by clicking “Flexible dates” on the same page.
What airports do you fly into for Boston from Seattle?
With Logan Intl. Airport (BOS), Manchester-Boston Regional Airport (MHT) and Provincetown Municipal Airport (PVC) to select from, traveling from Seattle to Boston is easy. The city’s main gateway, Logan Intl. Airport (BOS), is roughly 2 mi east of the center. As well as the price of fares, consider factors like the ease of getting from the airport and the distance to your hotel before deciding where you’ll get off the plane. Get your Boston vacation off to an awesome start by checking out Fenway Park and Boston Common.
What are the most popular departure times for flights from Sea-Tac Airport to Logan Intl. Airport (BOS)?
Between 9:00 PM - 10:00 PM is when you’ll find the most JetBlue Airways flights taking off from SEA to Logan Intl. Airport. Our top tip? Get up and away early. With air traffic yet to build up around airports, your chances of hopping on a delay-free flight are higher.
Can I change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
Life can throw a spanner in your plans, so Expedia is here to help make amending your journey as easy as possible. First, find your Seattle - Tacoma Intl. Airport (SEA) to BOS itinerary through the Expedia Trips portal and read the ticket rules to see if change fees apply. If you booked your fare in the last 24 hours, some airlines will let you cancel without charge and organize new flights. If you bought your fare more than 24 hours ago, get in touch with us through our Customer Service portal to find out your options.
Boston nearby Airports

Providence

Seattle to T.F. Green
$276.71

Worcester

Seattle to Worcester Regional
$325.95

Manchester

Seattle to Manchester-Boston Regional
$345.94

Provincetown

Seattle to Provincetown Municipal
$759.01

New Bedford

Seattle to New Bedford Regional
$926.21
Seattle nearby Airports

Seattle Paine Field Intl. Airport

Seattle Paine Field Intl. Airport to Boston
$371.18
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