SEA - BOS

$209 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 29/5. 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.
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KAYAK searches 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
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Cheap Flight Deals from Seattle to Boston (SEA-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Seattle to Boston that are departing in the next months. 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

KAYAK's recommended return flight deals from the most popular airlines that fly from Seattle to Boston.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Delta Logo
15:35 - 23:53SEA-BOS
5h 18mdirect
Delta Logo
07:25 - 10:45BOS-SEA
6h 20mdirect
$416Delta
Find Deal
Fri, 2 May - Sun, 4 May
JetBlue Logo
11:35 - 20:08SEA-BOS
5h 33mdirect
JetBlue Logo
15:10 - 20:54BOS-SEA
8h 44m1 stop
$432JetBlue
Find Deal
Fri, 2 May - Tue, 6 May
JetBlue Logo
21:23 - 09:14SEA-BOS
8h 51m1 stop
JetBlue Logo
07:10 - 10:28BOS-SEA
6h 18mdirect
$436JetBlue
Find Deal
Mon, 5 May - Wed, 14 May
Alaska Airlines Logo
15:49 - 00:12SEA-BOS
5h 23mdirect
Alaska Airlines Logo
16:34 - 09:23BOS-SEA
19h 49m1 stop
$474Alaska Airlines
Find Deal
Fri, 2 May - Sun, 4 May
United Airlines Logo
14:15 - 00:45SEA-BOS
7h 30m1 stop
United Airlines Logo
06:00 - 11:25BOS-SEA
8h 25m1 stop
$483United Airlines
Find Deal
Mon, 5 May - Mon, 12 May
Alaska Airlines Logo
18:59 - 07:40SEA-BOS
9h 41m1 stop
Alaska Airlines Logo
07:00 - 16:50BOS-SEA
12h 50m1 stop
$490Alaska Airlines
Find Deal
Wed, 21 May - Wed, 28 May
United Airlines Logo
12:46 - 23:59SEA-BOS
8h 13m1 stop
United Airlines Logo
16:45 - 22:42BOS-SEA
8h 57m1 stop
$491United Airlines
Find Deal
Wed, 30 Apr - Sat, 3 May
Hawaiian Airlines Logo
23:34 - 08:00SEA-BOS
5h 26mdirect
Hawaiian Airlines Logo
09:20 - 12:33BOS-SEA
6h 13mdirect
$609Hawaiian Airlines
Find Deal
Mon, 25 Aug - Thu, 4 Sep
Southwest Logo
05:20 - 21:20SEA-BOS
13h 00m2 stops
Southwest Logo
19:05 - 00:15BOS-SEA
8h 10m1 stop
$676Southwest
Find Deal
Tue, 1 Jul - Sat, 19 Jul
Southwest Logo
18:30 - 08:05SEA-BOS
10h 35m2 stops
Southwest Logo
17:50 - 00:50BOS-SEA
10h 00m1 stop
$693Southwest
Find Deal
Fri, 25 Jul - Mon, 4 Aug

KAYAK's insights & trends for Seattle to Boston flights

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 round-trip 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 $365 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $919 and $856 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.
To get a below average price on the flight from Seattle to Boston, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low season

February

High season

August

Cheapest flight

$209
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (31% 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 $124 for a one-way ticket and $247 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, Hawaiian Airlines, American Airlines, Delta, 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

  • 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

Air France, Air Tahiti Nui, Alaska Airlines, +15 more

Air France, Air Tahiti Nui, +16 more

Tuesday

Air France, Air Tahiti Nui, Alaska Airlines, +16 more

Air France, Air Tahiti Nui, +17 more

Wednesday

Air France, Air Tahiti Nui, Alaska Airlines, +15 more

Air France, Air Tahiti Nui, +16 more

Thursday

Air France, Air Tahiti Nui, Alaska Airlines, +16 more

Air France, Air Tahiti Nui, +17 more

Friday

Air France, Air Tahiti Nui, Alaska Airlines, +16 more

Air France, Air Tahiti Nui, +17 more

Saturday

Air France, Air Tahiti Nui, Alaska Airlines, +17 more

Air France, Air Tahiti Nui, +18 more

Sunday

Air France, Air Tahiti Nui, Alaska Airlines, +16 more

Air France, Air Tahiti Nui, +17 more

See more direct flights

Direct returns

Boston Logan Intl to Seattle/Tacoma Intl

Monday

Air France, Air Tahiti Nui, Alaska Airlines, +18 more

Air France, Air Tahiti Nui, +19 more

Tuesday

Air France, Air Tahiti Nui, Alaska Airlines, +16 more

Air France, Air Tahiti Nui, +17 more

Wednesday

Air France, Air Tahiti Nui, Alaska Airlines, +17 more

Air France, Air Tahiti Nui, +18 more

Thursday

Air France, Air Tahiti Nui, Alaska Airlines, +18 more

Air France, Air Tahiti Nui, +19 more

Friday

Air France, Air Tahiti Nui, Alaska Airlines, +15 more

Air France, Air Tahiti Nui, +16 more

Saturday

Air France, Air Tahiti Nui, Alaska Airlines, +16 more

Air France, Air Tahiti Nui, +17 more

Sunday

Air France, Air Tahiti Nui, Alaska Airlines, +18 more

Air France, Air Tahiti Nui, +19 more

See more direct flights
See more direct flights

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

Information on your arrival and departure airports

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