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Cheap flights from Seattle to Boston from C$ 138

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Boston departing on 31/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Boston

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Boston that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Seattle to Boston.

Cheap last-minute flights

Planning a quick getaway from Seattle to Boston? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Boston, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Seattle to Boston

Find recent round-trip train or bus tickets from Seattle to Boston.

All round-trip flight deals to Boston

The cheapest plane tickets to Boston found on KAYAK recently.
3:55 p.m. - 12:20 a.m.SEA-BOS
5h 25mdirect
7:00 a.m. - 10:45 a.m.BOS-SEA
6h 45mdirect
C$ 276Delta
Find Deal
Thu, 12 Dec - Mon, 16 Dec
11:05 a.m. - 7:15 p.m.SEA-BOS
5h 10mdirect
6:29 a.m. - 9:50 a.m.BOS-SEA
6h 21mdirect
C$ 278JetBlue
Find Deal
Thu, 5 Dec - Wed, 11 Dec
11:28 p.m. - 8:00 a.m.SEA-BOS
5h 32mdirect
6:40 p.m. - 10:15 p.m.BOS-SEA
6h 35mdirect
C$ 279Delta
Find Deal
Thu, 5 Dec - Wed, 11 Dec
3:40 p.m. - 11:59 p.m.SEA-BOS
5h 19mdirect
6:39 p.m. - 9:18 a.m.BOS-SEA
17h 39m1 stop
C$ 290Alaska Airlines
Find Deal
Thu, 5 Dec - Wed, 11 Dec
9:59 p.m. - 6:54 p.m.SEA-BOS
17h 55m1 stop
7:00 a.m. - 10:37 a.m.BOS-SEA
6h 37mdirect
C$ 304Alaska Airlines
Find Deal
Mon, 9 Dec - Thu, 12 Dec
11:35 a.m. - 7:45 p.m.SEA-BOS
5h 10mdirect
6:29 a.m. - 9:50 a.m.BOS-SEA
6h 21mdirect
C$ 307JetBlue
Find Deal
Thu, 28 Nov - Sat, 7 Dec
6:25 a.m. - 9:30 p.m.SEA-BOS
12h 05m2 stops
5:52 p.m. - 12:50 a.m.BOS-SEA
9h 58m1 stop
C$ 339United Airlines
Find Deal
Thu, 5 Dec - Sat, 7 Dec
7:00 a.m. - 11:59 p.m.SEA-BOS
13h 59m2 stops
8:00 a.m. - 3:45 p.m.BOS-SEA
10h 45m1 stop
C$ 368United Airlines
Find Deal
Thu, 9 Jan - Thu, 16 Jan
12:15 a.m. - 11:27 a.m.SEA-BOS
8h 12m1 stop
6:30 a.m. - 12:43 p.m.BOS-SEA
9h 13m1 stop
C$ 373American Airlines
Find Deal
Wed, 11 Dec - Mon, 16 Dec
5:45 p.m. - 5:31 a.m.SEA-BOS
8h 46m1 stop
6:30 a.m. - 12:43 p.m.BOS-SEA
9h 13m1 stop
C$ 451American Airlines
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Thu, 12 Dec - Mon, 16 Dec
3:20 p.m. - 11:31 p.m.SEA-BOS
5h 11mdirect
C$ 138JetBlue
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Fri, 31 Jan
3:40 p.m. - 11:59 p.m.SEA-BOS
5h 19mdirect
C$ 139Alaska Airlines
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Thu, 5 Dec
11:29 p.m. - 7:55 a.m.SEA-BOS
5h 26mdirect
C$ 147Delta
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Wed, 4 Dec
12:45 a.m. - 1:35 p.m.SEA-BOS
9h 50m1 stop
C$ 152American Airlines
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Thu, 30 Jan
10:50 p.m. - 6:54 p.m.SEA-BOS
17h 04m1 stop
C$ 161Alaska Airlines
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Mon, 9 Dec
5:15 a.m. - 5:06 p.m.SEA-BOS
8h 51m1 stop
C$ 166United Airlines
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Sun, 8 Dec
7:00 a.m. - 5:23 p.m.SEA-BOS
7h 23m1 stop
C$ 180United Airlines
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Sat, 11 Jan
1:50 p.m. - 9:57 p.m.SEA-BOS
5h 07mdirect
C$ 194JetBlue
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Mon, 6 Jan
3:30 p.m. - 11:55 p.m.SEA-BOS
5h 25mdirect
C$ 196Delta
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Thu, 10 Apr
7:24 a.m. - 7:16 p.m.SEA-BOS
8h 52m1 stop
C$ 208American Airlines
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Mon, 6 Jan
11:29 p.m. - 7:55 a.m.SEA-BOS
5h 26mdirect
11:00 a.m. - 2:36 p.m.BOS-SEA
6h 36mdirect
C$ 418Delta
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Sat, 23 Nov - Tue, 26 Nov
3:50 p.m. - 11:59 p.m.SEA-BOS
5h 09mdirect
7:07 a.m. - 10:34 a.m.BOS-SEA
6h 27mdirect
C$ 475Alaska Airlines
Find Deal
Thu, 21 Nov - Tue, 26 Nov
11:35 a.m. - 7:45 p.m.SEA-BOS
5h 10mdirect
7:00 a.m. - 10:25 a.m.BOS-SEA
6h 25mdirect
C$ 517JetBlue
Find Deal
Thu, 21 Nov - Mon, 25 Nov
8:19 p.m. - 3:47 p.m.SEA-BOS
16h 28m1 stop
7:07 a.m. - 10:34 a.m.BOS-SEA
6h 27mdirect
C$ 530Alaska Airlines
Find Deal
Sat, 23 Nov - Tue, 26 Nov
12:55 a.m. - 11:00 a.m.SEA-BOS
7h 05m1 stop
7:00 a.m. - 10:45 a.m.BOS-SEA
6h 45mdirect
C$ 587Delta
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Sat, 23 Nov - Mon, 25 Nov
7:11 p.m. - 7:43 a.m.SEA-BOS
9h 32m2 stops
6:00 a.m. - 12:08 p.m.BOS-SEA
9h 08m1 stop
C$ 649United Airlines
Find Deal
Thu, 21 Nov - Mon, 25 Nov
11:35 a.m. - 7:45 p.m.SEA-BOS
5h 10mdirect
7:00 a.m. - 10:25 a.m.BOS-SEA
6h 25mdirect
C$ 658JetBlue
Find Deal
Thu, 21 Nov - Sat, 23 Nov
9:05 a.m. - 11:40 p.m.SEA-BOS
11h 35m1 stop
4:15 p.m. - 12:50 a.m.BOS-SEA
11h 35m2 stops
C$ 692Southwest
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Thu, 21 Nov - Sat, 23 Nov
9:05 a.m. - 9:40 p.m.SEA-BOS
9h 35m2 stops
4:15 p.m. - 12:50 a.m.BOS-SEA
11h 35m2 stops
C$ 699Southwest
Find Deal
Thu, 21 Nov - Sat, 23 Nov
7:11 p.m. - 7:43 a.m.SEA-BOS
9h 32m2 stops
6:00 a.m. - 12:53 p.m.BOS-SEA
9h 53m1 stop
C$ 748United Airlines
Find Deal
Thu, 21 Nov - Tue, 26 Nov
3:55 p.m. - 12:20 a.m.SEA-BOS
5h 25mdirect
7:00 a.m. - 10:45 a.m.BOS-SEA
6h 45mdirect
C$ 276Delta
Find Deal
Thu, 12 Dec - Mon, 16 Dec
11:05 a.m. - 7:15 p.m.SEA-BOS
5h 10mdirect
6:29 a.m. - 9:50 a.m.BOS-SEA
6h 21mdirect
C$ 278JetBlue
Find Deal
Thu, 5 Dec - Wed, 11 Dec
11:28 p.m. - 8:00 a.m.SEA-BOS
5h 32mdirect
6:40 p.m. - 10:15 p.m.BOS-SEA
6h 35mdirect
C$ 279Delta
Find Deal
Thu, 5 Dec - Wed, 11 Dec
11:28 p.m. - 8:00 a.m.SEA-BOS
5h 32mdirect
7:00 a.m. - 10:45 a.m.BOS-SEA
6h 45mdirect
C$ 280Delta
Find Deal
Thu, 5 Dec - Wed, 11 Dec
11:29 p.m. - 7:55 a.m.SEA-BOS
5h 26mdirect
6:40 p.m. - 10:15 p.m.BOS-SEA
6h 35mdirect
C$ 292Delta
Find Deal
Wed, 4 Dec - Sat, 7 Dec
6:34 a.m. - 3:00 p.m.SEA-BOS
5h 26mdirect
7:54 p.m. - 11:31 p.m.BOS-SEA
6h 37mdirect
C$ 306Alaska Airlines
Find Deal
Thu, 28 Nov - Fri, 6 Dec
11:35 a.m. - 7:45 p.m.SEA-BOS
5h 10mdirect
6:29 a.m. - 9:50 a.m.BOS-SEA
6h 21mdirect
C$ 307JetBlue
Find Deal
Thu, 28 Nov - Sat, 7 Dec
6:34 a.m. - 3:00 p.m.SEA-BOS
5h 26mdirect
5:55 p.m. - 9:34 p.m.BOS-SEA
6h 39mdirect
C$ 369Alaska Airlines
Find Deal
Thu, 2 Jan - Thu, 9 Jan
11:30 p.m. - 7:44 a.m.SEA-BOS
5h 14mdirect
7:00 a.m. - 10:40 a.m.BOS-SEA
6h 40mdirect
C$ 390Alaska Airlines
Find Deal
Fri, 7 Mar - Mon, 10 Mar
11:30 p.m. - 7:56 a.m.SEA-BOS
5h 26mdirect
7:00 a.m. - 10:23 a.m.BOS-SEA
6h 23mdirect
C$ 461Alaska Airlines
Find Deal
Sun, 6 Apr - Sat, 12 Apr

Alaska Airlines flights from Seattle to Boston

Our best Alaska Airlines deals on Seattle to Boston flight tickets
Alaska Airlines
5 Dec
SEA3:40 p.m.Seattle/Tacoma Intl
5h 19m
BOS11:59 p.m.Boston Logan Intl
11 Dec
BOS6:39 p.m.Boston Logan Intl
17h 39m
1 stop
SEA9:18 a.m.Seattle/Tacoma Intl
Alaska Airlines
9 Dec
SEA9:59 p.m.Seattle/Tacoma Intl
17h 55m
1 stop
BOS6:54 p.m.Boston Logan Intl
12 Dec
BOS7:00 a.m.Boston Logan Intl
6h 37m
SEA10:37 a.m.Seattle/Tacoma Intl
Alaska Airlines
28 Nov
SEA6:34 a.m.Seattle/Tacoma Intl
5h 26m
BOS3:00 p.m.Boston Logan Intl
6 Dec
BOS7:54 p.m.Boston Logan Intl
6h 37m
SEA11:31 p.m.Seattle/Tacoma Intl

JetBlue flights from Seattle to Boston

Our best JetBlue deals on Seattle to Boston flight tickets
JetBlue
28 Nov
SEA11:35 a.m.Seattle/Tacoma Intl
5h 10m
BOS7:45 p.m.Boston Logan Intl
7 Dec
BOS6:29 a.m.Boston Logan Intl
6h 21m
SEA9:50 a.m.Seattle/Tacoma Intl
JetBlue
28 Nov
SEA11:35 a.m.Seattle/Tacoma Intl
5h 10m
BOS7:45 p.m.Boston Logan Intl
7 Dec
BOS6:29 a.m.Boston Logan Intl
6h 21m
SEA9:50 a.m.Seattle/Tacoma Intl
JetBlue
28 Nov
SEA11:35 a.m.Seattle/Tacoma Intl
5h 10m
BOS7:45 p.m.Boston Logan Intl
7 Dec
BOS6:29 a.m.Boston Logan Intl
6h 21m
SEA9:50 a.m.Seattle/Tacoma Intl

How to get the cheapest flight ticket from Seattle to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Seattle to Boston?

January. The cheapest time of year to fly to Boston from Seattle is January. The most expensive is July.

What is the cheapest day to depart Seattle for Boston?

Sunday. The cheapest day of the week is typically Sunday. The most expensive is typically Saturday

When is the cheapest time to fly from Seattle to Boston?

In the afternoon. Seattle to Boston flights are approximately 21% more expensive in the evening than in the afternoon

What is the cheapest airline that flies to Boston from Seattle?

Delta. Delta, JetBlue, and Alaska Airlines are the most popular carriers operating from Seattle to Boston

What is the cheapest Seattle to Boston flight route?

Seattle/Tacoma Intl - Boston Logan Intl. Fly from Seattle/Tacoma Intl to Boston Logan Intl for the best Seattle - Boston flight prices

How far in advance should you book Seattle to Boston flights?

38 days before. The cheapest time to buy a flight from Seattle to Boston is approximately 38 days to departure

How many flights depart from Seattle to Boston on average per day?

As of November 2024, there are 23 flights per week flying from Seattle to Boston. The most common time of day flights depart is 10:00a.m., with 63% of flights taking off at noon.

How many flights depart from Seattle to Boston on average per week?

The number of flights available between Seattle and Boston is 165 per week as of November 2024. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

Can stopping save me money on Seattle to Boston flights?

No. A direct flight is the cheapest option for a flight between Seattle to Boston.

How have Seattle to Boston flight prices changed over time?

As of November 2024, prices for Seattle to Boston flights are approximately 24% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Boston (SEA to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Boston

Best price found

C$ 138

Fastest flight time

5h 07m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Seattle in the past 72 hours is C$ 138. The best round-trip flight deal from Seattle to Boston found on momondo in the last 72 hours is C$ 276.
The fastest flight from Seattle to Boston takes 5h 07m
Direct flights go from Seattle to Boston every day.
There is 1 airport near Boston: Boston Logan Intl (BOS)

  • How far is Seattle/Tacoma Intl to Boston Logan Intl by plane?

    A flight from Seattle/Tacoma Intl to Boston Logan Intl will travel around 3997.7 km. Typically, this will take 5h 07m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport were last updated today.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The required travel and health documents for your Boston Logan Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Boston Logan Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Seattle to Boston?

  • What is the most popular airline from Seattle to Boston?


Best airlines flying from Seattle to Boston

Compare and see reviews for airlines that fly from Seattle to Boston with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom C$ 171Free CancellationRating
8.0
9,451 reviews
Search Alaska Airlines flights
JetBluePriceFrom C$ 173Free CancellationRating
7.5
3,407 reviews
Search JetBlue flights
DeltaPriceFrom C$ 182Free CancellationRating
8.0
8,766 reviews
Search Delta flights
  • Alaska Airlines Flights From Seattle to Boston

    Alaska Airlines flies from Seattle to Boston around 13 times per week, with 9,451 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Seattle to Boston in the last 72 hours was C$ 121 (round-trip), much lower than the average airfare cost of C$ 354 for Alaska Airlines flights on this route.

  • Delta Flights From Seattle to Boston

    Delta is also a popular choice for this route. Delta flight deals for Seattle to Boston start from as low as C$ 129 round-trip, depending on your selected dates, with average Delta deals seen on momondo around C$ 262. Delta operates 18 flights to Boston from Seattle in an average week. Users have rated it 8.0/10 across 8,766 reviews.


Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Boston?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Boston for you.

Can I find flights from Seattle to Boston with flexible booking policies on momondo?

Yes. All flights to Boston from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Boston?

Once all potential Seattle to Boston flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Boston right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Boston flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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