$121 Cheap Flights from Seattle (SEA) to Boston (BOS)

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Flight deals we found

These prices are lower than our typical predictions for similar flights.
65% less than typical
$382
Roundtrip per traveler
Wed, Jun 12 - Sun, Jun 16
JetBlue AirwaysJetBlue Airways
5h 29m
8:40pm
5:09am
+1
SEA
Nonstop
BOS
Found 5 hours ago
65% less than typical
$382
Roundtrip per traveler
Wed, Jun 12 - Sun, Jun 16
DeltaDelta
5h 30m
3:59pm
12:29am
+1
SEA
Nonstop
BOS
Found 7 hours ago
60% less than typical
$442
Roundtrip per traveler
Tue, Jul 16 - Sun, Jul 21
JetBlue AirwaysJetBlue Airways
5h 20m
8:50pm
5:10am
+1
SEA
Nonstop
BOS
Found 14 hours ago
55% less than typical
$546
Roundtrip per traveler
Sat, May 18 - Tue, May 21
Alaska AirlinesAlaska Airlines
5h 24m
3:35pm
11:59pm
SEA
Nonstop
BOS
Found 14 hours ago
30% less than typical
$386
Roundtrip per traveler
Fri, May 24 - Thu, May 30
JetBlue AirwaysJetBlue Airways
5h 29m
8:40pm
5:09am
+1
SEA
Nonstop
BOS
Found 6 hours ago
30% less than typical
$352
Roundtrip per traveler
Sun, Jun 9 - Tue, Jun 11
DeltaDelta
5h 27m
11:25pm
7:52am
+1
SEA
Nonstop
BOS
Found 11 hours ago
30% less than typical
$346
Roundtrip per traveler
Thu, Jun 6 - Sat, Jun 8
DeltaDelta
5h 32m
3:27pm
11:59pm
SEA
Nonstop
BOS
Just found
25% less than typical
$380
Roundtrip per traveler
Thu, Aug 8 - Sun, Aug 18
JetBlue AirwaysJetBlue Airways
5h 20m
8:50pm
5:10am
+1
SEA
Nonstop
BOS
Found 12 hours ago
25% less than typical
$397
Roundtrip per traveler
Sun, May 26 - Mon, May 27
DeltaDelta
5h 37m
7:45am
4:22pm
SEA
Nonstop
BOS
Found 1 hour ago
20% less than typical
$397
Roundtrip per traveler
Wed, May 22 - Mon, May 27
DeltaDelta
5h 32m
3:27pm
11:59pm
SEA
Nonstop
BOS
Found 1 hour ago
20% less than typical
$397
Roundtrip per traveler
Wed, May 22 - Mon, May 27
JetBlue AirwaysJetBlue Airways
5h 29m
8:40pm
5:09am
+1
SEA
Nonstop
BOS
Found 2 hours ago
25% less than typical
$367
Roundtrip per traveler
Mon, Jun 10 - Fri, Jun 14
DeltaDelta
5h 30m
3:59pm
12:29am
+1
SEA
Nonstop
BOS
Found 20 hours ago
20% less than typical
$430
Roundtrip per traveler
Thu, Jul 4 - Sun, Jul 7
JetBlue AirwaysJetBlue Airways
5h 20m
8:50pm
5:10am
+1
SEA
Nonstop
BOS
Found 11 hours ago
20% less than typical
$397
Roundtrip per traveler
Fri, May 24 - Tue, May 28
JetBlue AirwaysJetBlue Airways
5h 29m
8:40pm
5:09am
+1
SEA
Nonstop
BOS
Found 5 hours ago
70% less than typical
$357
Roundtrip per traveler
Wed, Jun 12 - Sun, Jun 16
UnitedUnited
7h 47m
12:10pm
10:57pm
SEA
1 stop • 56m in EWR
BOS
Found 5 hours ago

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Cheap Flights from Seattle to Boston (SEA-BOS)

Prices were available within the past 7 days and start at $121 for one-way flights and $241 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Spirit Airlines
Spirit Airlines
American Airlines
Spirit Airlines
Sun Country Airlines
American Airlines
American Airlines
Spirit Airlines
Spirit Airlines
Flights from Seattle (SEA) to Boston (BOS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$241
Distance
2487 mi
Average flight time
8 hours 41 mins

Seattle to Boston Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Seattle to Boston offer the perfect respite. Not only does exploring Boston provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Seattle to Boston may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from SEA to BOS today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Boston are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Boston more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Boston is $121 now!

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 $90. 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 June 11 2024 and arriving at BOS. The price of this flight was last updated on May 7 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 $90. 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 June 11 2024 and arrives at Logan Intl. Airport. The pricing information was updated on May 7 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 $93. 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 June 3 2024 and touching down at Logan Intl. Airport. The price was updated on May 7 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 $343. 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 June 1 2024 and touching down at BOS, with a return flight on June 8 2024. Pricing information was last updated on May 7 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
Seattle nearby Airports

Seattle Paine Field Intl. Airport

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