SEA - BOS

$168 Find cheap flights from Seattle to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Boston departing on 6/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

Search hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Boston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Boston, as well as popular online travel agencies
In the last 7 days, travellers have searched 47,107,125 times on KAYAK, and here's why:

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Cheap flight deals from Seattle to Boston (SEA-BOS)

 
These are the cheapest deals for flights from Seattle to Boston currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Seattle to Boston

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seattle to Boston.

Recent one-way flight deals from Seattle to Boston

Only flying one-way? Below are some of the best one-way flight deals from Seattle to Boston found on KAYAK recently.

Recent last-minute flight deals from Seattle to Boston

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Seattle to Boston.

Recent direct flight deals from Seattle to Boston

The latest deals for direct flights from Seattle to Boston so you can sit back and relax without the need for a layover.

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
15:55 - 00:20SEA-BOS
5h 25mdirect
07:00 - 10:45BOS-SEA
6h 45mdirect
$329Delta
Find Deal
Mon, 9 Dec - Thu, 12 Dec
11:05 - 19:15SEA-BOS
5h 10mdirect
06:29 - 09:50BOS-SEA
6h 21mdirect
$333JetBlue
Find Deal
Thu, 5 Dec - Wed, 11 Dec
21:59 - 18:54SEA-BOS
17h 55m1 stop
19:54 - 23:31BOS-SEA
6h 37mdirect
$350Alaska Airlines
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Fri, 6 Dec - Sun, 8 Dec
07:00 - 15:13SEA-BOS
5h 13mdirect
19:54 - 23:31BOS-SEA
6h 37mdirect
$352Alaska Airlines
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Wed, 4 Dec - Mon, 9 Dec
23:55 - 10:49SEA-BOS
7h 54m1 stop
17:52 - 00:50BOS-SEA
9h 58m1 stop
$401United Airlines
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Wed, 4 Dec - Sat, 14 Dec
05:00 - 15:48SEA-BOS
7h 48m1 stop
12:12 - 21:11BOS-SEA
11h 59m2 stops
$443United Airlines
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Fri, 10 Jan - Sat, 18 Jan
07:30 - 22:10SEA-BOS
11h 40m2 stops
13:25 - 23:20BOS-SEA
12h 55m2 stops
$452Southwest
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Thu, 9 Jan - Tue, 14 Jan
06:50 - 08:20SEA-BOS
22h 30m2 stops
07:00 - 22:55BOS-SEA
18h 55m2 stops
$477Southwest
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Mon, 9 Dec - Thu, 12 Dec
15:40 - 23:59SEA-BOS
5h 19mdirect
14:26 - 23:15BOS-SEA
11h 49m1 stop
$530American Airlines
Find Deal
Mon, 9 Dec - Thu, 12 Dec
00:31 - 11:26SEA-BOS
7h 55m1 stop
07:20 - 14:56BOS-SEA
10h 36m1 stop
$615American Airlines
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Fri, 3 Jan - Sat, 11 Jan
11:00 - 19:20SEA-BOS
5h 20mdirect
$168JetBlue
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Fri, 6 Dec
23:55 - 12:45SEA-BOS
9h 50m1 stop
$192United Airlines
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Mon, 9 Dec
22:50 - 18:54SEA-BOS
17h 04m1 stop
$194Alaska Airlines
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Mon, 9 Dec
22:50 - 18:54SEA-BOS
17h 04m1 stop
$228Alaska Airlines
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Thu, 5 Dec
15:30 - 23:59SEA-BOS
5h 29mdirect
$236Delta
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Wed, 7 May
07:30 - 16:02SEA-BOS
5h 32mdirect
$253Delta
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Thu, 28 Nov
18:27 - 10:51SEA-BOS
13h 24m1 stop
$319Sun Country Air
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Thu, 2 Jan
08:00 - 23:40SEA-BOS
12h 40m2 stops
$328Southwest
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Fri, 6 Dec
18:35 - 10:41SEA-BOS
13h 06m1 stop
$370Sun Country Air
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Sun, 8 Dec
05:00 - 18:30SEA-BOS
10h 30m2 stops
$413Southwest
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Thu, 28 Nov
23:29 - 07:55SEA-BOS
5h 26mdirect
07:00 - 10:45BOS-SEA
6h 45mdirect
$538Delta
Find Deal
Sat, 23 Nov - Sun, 8 Dec
20:19 - 15:47SEA-BOS
16h 28m1 stop
19:54 - 23:31BOS-SEA
6h 37mdirect
$554Alaska Airlines
Find Deal
Sat, 23 Nov - Sun, 8 Dec
11:35 - 19:45SEA-BOS
5h 10mdirect
07:00 - 10:25BOS-SEA
6h 25mdirect
$691JetBlue
Find Deal
Mon, 25 Nov - Fri, 29 Nov
11:35 - 19:45SEA-BOS
5h 10mdirect
07:00 - 10:25BOS-SEA
6h 25mdirect
$793JetBlue
Find Deal
Sun, 24 Nov - Fri, 29 Nov
05:00 - 18:20SEA-BOS
10h 20m2 stops
18:30 - 00:25BOS-SEA
8h 55m1 stop
$868Southwest
Find Deal
Sat, 23 Nov - Sun, 24 Nov
05:00 - 18:20SEA-BOS
10h 20m2 stops
08:25 - 18:50BOS-SEA
13h 25m2 stops
$876Southwest
Find Deal
Sat, 23 Nov - Sun, 24 Nov
16:35 - 05:03SEA-BOS
9h 28m1 stop
06:00 - 12:53BOS-SEA
9h 53m1 stop
$883United Airlines
Find Deal
Sun, 24 Nov - Fri, 29 Nov
07:10 - 23:17SEA-BOS
13h 07m2 stops
11:40 - 18:09BOS-SEA
9h 29m1 stop
$953United Airlines
Find Deal
Sun, 24 Nov - Mon, 25 Nov
12:40 - 09:37SEA-BOS
17h 57m1 stop
12:37 - 11:31BOS-SEA
25h 54m1 stop
$1,231Sun Country Air
Find Deal
Tue, 26 Nov - Mon, 2 Dec
18:23 - 09:37SEA-BOS
12h 14m1 stop
10:30 - 13:34BOS-SEA
30h 04m1 stop
$1,452Sun Country Air
Find Deal
Tue, 26 Nov - Sun, 1 Dec
15:55 - 00:20SEA-BOS
5h 25mdirect
07:00 - 10:45BOS-SEA
6h 45mdirect
$329Delta
Find Deal
Mon, 9 Dec - Thu, 12 Dec
11:05 - 19:15SEA-BOS
5h 10mdirect
06:29 - 09:50BOS-SEA
6h 21mdirect
$333JetBlue
Find Deal
Thu, 5 Dec - Wed, 11 Dec
11:05 - 19:15SEA-BOS
5h 10mdirect
06:29 - 09:50BOS-SEA
6h 21mdirect
$335JetBlue
Find Deal
Thu, 5 Dec - Tue, 10 Dec
07:30 - 16:02SEA-BOS
5h 32mdirect
07:00 - 10:45BOS-SEA
6h 45mdirect
$336Delta
Find Deal
Thu, 5 Dec - Wed, 11 Dec
07:00 - 15:13SEA-BOS
5h 13mdirect
19:54 - 23:31BOS-SEA
6h 37mdirect
$352Alaska Airlines
Find Deal
Wed, 4 Dec - Mon, 9 Dec
23:17 - 07:30SEA-BOS
5h 13mdirect
19:19 - 22:38BOS-SEA
6h 19mdirect
$369JetBlue
Find Deal
Sun, 23 Feb - Thu, 27 Feb
07:30 - 16:02SEA-BOS
5h 32mdirect
07:00 - 10:45BOS-SEA
6h 45mdirect
$386Delta
Find Deal
Wed, 4 Dec - Sun, 8 Dec
23:35 - 08:02SEA-BOS
5h 27mdirect
18:59 - 22:23BOS-SEA
6h 24mdirect
$403Delta
Find Deal
Sun, 5 Jan - Sun, 12 Jan
07:55 - 16:24SEA-BOS
5h 29mdirect
17:55 - 21:34BOS-SEA
6h 39mdirect
$409Alaska Airlines
Find Deal
Tue, 14 Jan - Tue, 14 Jan
23:30 - 07:44SEA-BOS
5h 14mdirect
07:00 - 10:23BOS-SEA
6h 23mdirect
$470Alaska Airlines
Find Deal
Thu, 6 Mar - Mon, 7 Apr

Flights from Seattle to Boston - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Boston to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Boston is January, where tickets cost $401 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $905 and $859 respectively.

How far in advance should I book a flight from Seattle to Boston?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Boston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Boston, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 131 days before departure.

Good to know

Low season

January

High season

August

Cheapest flight

$168
Best time to beat the crowds (37% less expensive on average)
Most popular time to fly (30% more expensive on average)
Flight from Seattle to Boston

When to book flights from Seattle to Boston

Are your dates flexible? Find out the best times to travel from Seattle to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Boston

  • Where can I find bus services at Logan airport?

    Moving around the Logan airport is the least of your worries since the airport provides free bus services. They ferry travelers to various spots at varying intervals. The buses are easy to board and to load luggage, thanks to their low floors. They also have a wheelchair lift, making them friendly to the disabled. You’ll find them to the south of each terminal.

  • What assistance can I get at the Seattle airport?

    The airport works toward giving travelers a memorable experience when waiting for their flights. You can find advanced facilities and welcoming staff to help you move around and offer you all the assistance needed. The disabled can access wheelchair services, which the airport provides at no cost upon making a reservation.

  • How fast can I get accommodation upon landing at Logan airport?

    You can get accommodation near Logan airport for approximately $144. Take a free shuttle bus at the terminals to access hotels such as the Homewood Suites, located 3.5 miles away. Enjoy an indoor pool table, Wi-Fi, and a fitness center. The hotel serves complimentary breakfast too.

  • What can keep me busy as I wait for my flight to Seattle Airport?

    Travelers can enjoy a walking tour to explore attractions in the neighborhood using underground paths and learn about the history. Waiting for your flight does not have to be boring, as there is too much fun around the airport.

  • What is the cheapest flight from Seattle to Boston?

    In the last 3 days, the lowest price for a flight from Seattle to Boston was $99 for a one-way ticket and $194 for a return.

  • Which airports will I be using when flying from Seattle to Boston?

    Seattle airport is called Seattle/Tacoma Intl and the only airport in Boston is Boston Logan Intl.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Boston?

    All the following airlines offer inflight Wi-Fi service on the Seattle to Boston flight route: JetBlue, Alaska Airlines, American Airlines, Hawaiian Airlines, Lufthansa, KLM, and Virgin Atlantic.

  • Which aircraft models fly most regularly from Seattle to Boston?

    The Airbus A321neo is the aircraft model that flies most regularly on the Seattle to Boston flight route.

  • Which airline alliances offer flights from Seattle to Boston?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Boston, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Seattle to Boston?

    There are direct flights from Seattle to Boston on a daily basis.

  • How does KAYAK find such low prices on flights from Seattle to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Boston with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to Boston

  • Looking for a cheap flight? 25% of our users found flights on this route for $489 or less one-way.
  • Seattle International Airport offers tranquil air services to travelers flying to Boston. You can book one among the several nonstop flights and land at Logan International Airport. Airlines operating on this route include Alaska and American Airlines.
  • If you are departing from Seattle airport, you can park your car and fly with your keys. You’ll find dedicated staff to assist you in parking and even carry your bags to the airport. What more, you enjoy a complimentary bottle of water as you head to the terminals.
  • While at Seattle airport, you can enjoy free Wi-Fi and take snacks and drinks at the elegant lounges that the facility has to offer. You can book your lounge tickets that cost around $49. At Courtyard A, you’ll find the Club Sea lounge that serves beer and other beverages.
  • Seattle airport features multiple artistic works that include photography, sculpture, and painting, among others. Travelers can explore creative artwork by reputable artists such as Robert Rauschenberg.
  • Travelers enjoy a variety of dining services as they wait to depart from Seattle International Airport. There are gift shops, fashion brands, and duty-free services offered at the waiting halls.
  • For those travelers with young kids, Seattle airport provides nursing rooms located in various areas. Find one in the Children Play Area at Concourse A. Another nursing room exists in Concourse D next to D24. You’ll also find one above checkpoint 3.
  • Travelers landing at Logan International Airport can access the United Club lounge located in Terminal B at $59 for adults. The lounge serves drinks, premium food, snacks, and breakfast. Other services include printing, photocopies, and free Wi-Fi.
See more tips

Prefer to fly direct from Seattle/Tacoma Intl to Boston Logan Intl?

Find which airlines fly direct from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Boston Logan Intl

Monday

Aer Lingus, Air France, Air Tahiti Nui, +12 more

Aer Lingus, Air France, +13 more

Tuesday

Aer Lingus, Air France, Air Tahiti Nui, +13 more

Aer Lingus, Air France, +14 more

Wednesday

Aer Lingus, Air France, Air Tahiti Nui, +11 more

Aer Lingus, Air France, +12 more

Thursday

Aer Lingus, Air France, Air Tahiti Nui, +15 more

Aer Lingus, Air France, +16 more

Friday

Aer Lingus, Air France, Air Tahiti Nui, +12 more

Aer Lingus, Air France, +13 more

Saturday

Aer Lingus, Air France, Air Tahiti Nui, +14 more

Aer Lingus, Air France, +15 more

Sunday

Aer Lingus, Air France, Air Tahiti Nui, +14 more

Aer Lingus, Air France, +15 more

See more direct flights

Direct returns

Boston Logan Intl to Seattle/Tacoma Intl

Monday

Air France, Air Tahiti Nui, Alaska Airlines, +14 more

Air France, Air Tahiti Nui, +15 more

Tuesday

Air France, Air Tahiti Nui, Alaska Airlines, +11 more

Air France, Air Tahiti Nui, +12 more

Wednesday

Air France, Air Tahiti Nui, Alaska Airlines, +11 more

Air France, Air Tahiti Nui, +12 more

Thursday

Air France, Air Tahiti Nui, Alaska Airlines, +13 more

Air France, Air Tahiti Nui, +14 more

Friday

Air France, Air Tahiti Nui, Alaska Airlines, +13 more

Air France, Air Tahiti Nui, +14 more

Saturday

Air France, Air Tahiti Nui, Alaska Airlines, +13 more

Air France, Air Tahiti Nui, +14 more

Sunday

Air France, Air Tahiti Nui, Alaska Airlines, +12 more

Air France, Air Tahiti Nui, +13 more

See more direct flights
See more direct flights

Book cheap flights from Seattle to Boston

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Boston found on KAYAK in the last 72 hours.
6/12Fri
directJetBlue
5h 20mSEA-BOS
$168
9/12Mon
1 stopUnited Airlines
9h 50mSEA-BOS
$192
9/12Mon
1 stopAlaska Airlines
17h 04mSEA-BOS
$194
5/12Thu
1 stopAlaska Airlines
17h 04mSEA-BOS
$228
7/5Wed
directDelta
5h 29mSEA-BOS
$236
28/11Thu
directDelta
5h 32mSEA-BOS
$253
2/1Thu
1 stopSun Country Air
13h 24mSEA-BOS
$319
6/12Fri
2 stopsSouthwest
12h 40mSEA-BOS
$328
8/12Sun
1 stopSun Country Air
13h 06mSEA-BOS
$370
28/11Thu
2 stopsSouthwest
10h 30mSEA-BOS
$413

Search by stops

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Search by price

Last minute flights from Seattle to Boston

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Boston that are departing in the next 10 days.
23/11Sat
directDelta
5h 26mSEA-BOS
8/12Sun
directDelta
6h 45mBOS-SEA
$538
23/11Sat
multi-stopAlaska Airlines
16h 28mSEA-BOS
8/12Sun
directAlaska Airlines
6h 37mBOS-SEA
$554
25/11Mon
directJetBlue
5h 10mSEA-BOS
29/11Fri
directJetBlue
6h 25mBOS-SEA
$691
24/11Sun
directJetBlue
5h 10mSEA-BOS
29/11Fri
directJetBlue
6h 25mBOS-SEA
$793
23/11Sat
multi-stopSouthwest
10h 20mSEA-BOS
24/11Sun
multi-stopSouthwest
8h 55mBOS-SEA
$868
23/11Sat
multi-stopSouthwest
10h 20mSEA-BOS
24/11Sun
multi-stopSouthwest
13h 25mBOS-SEA
$876
24/11Sun
multi-stopUnited Airlines
9h 28mSEA-BOS
29/11Fri
multi-stopUnited Airlines
9h 53mBOS-SEA
$883
24/11Sun
multi-stopUnited Airlines
13h 07mSEA-BOS
25/11Mon
multi-stopUnited Airlines
9h 29mBOS-SEA
$953
26/11Tue
multi-stopSun Country Air
17h 57mSEA-BOS
2/12Mon
multi-stopSun Country Air
25h 54mBOS-SEA
$1,231
26/11Tue
multi-stopSun Country Air
12h 14mSEA-BOS
1/12Sun
multi-stopSun Country Air
30h 04mBOS-SEA
$1,452

Search by stops

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Search by price

Everything you need to know for your flight from Seattle to Boston

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.