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BOS - SEA

Find cheap flights from Boston to Seattle

1 adult
0 bags
Fri 24/5
Fri 31/5

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Seattle, 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 Boston to Seattle, as well as popular online travel agencies
In the last 7 days, travellers have searched 45,119,101 times on KAYAK, and here's why:

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Flights from Boston to Seattle - Travel Insights & Trends

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to Seattle, 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 Boston to Seattle is January, where tickets cost £175 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is £413 and £402 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Boston to Seattle, 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 Boston to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 27 days before departure.

Which airlines fly most frequently between Boston and Seattle?

In normal times, Alaska Airlines flies from Boston to Seattle up to 6 times per day, Delta up to 4 times per day, and JetBlue 1 time per day.

Which airlines fly direct between Boston and Seattle?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Boston to Seattle.
There are 4 airlines that fly direct from Boston to Seattle. They are: Alaska Airlines, Delta, Hainan Airlines and JetBlue. The cheapest price of all airlines flying this route was found with Alaska Airlines at £151 for a one-way flight. On average, the best prices for this route can be found at Alaska Airlines.

How many flights are there between Boston and Seattle per day?

Each day, there are between 9 and 14 nonstop flights that take off from Boston and land in Seattle, with an average flight time of 6h 13m. The most common departure time is 19:00 and most flights take off in the morning. Each week, there are 82 flights. The most frequent day of departure is Sunday, when 17% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Boston and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 2 cabin class options for the route. These are First and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

What’s the earliest departure time from Boston to Seattle?

Early birds can take the earliest flight from Boston at 06:30 and will be landing in Seattle at 09:50.

What’s the latest departure time from Boston to Seattle?

If you prefer to fly at night, the latest flight from Boston to Seattle jets off at 19:59 and lands at 23:08.

Good to know - Cheap tickets from Boston to Seattle

Low season

January

High season

August
Best time to beat the crowds (40% less expensive on average)
Most popular time to fly (33% more expensive on average)

When to book flights from Boston to Seattle

Are your dates flexible? Find out the best times to travel from Boston to Seattle 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 Boston to Seattle

  • Are there onsite hotels at Seattle-Tacoma International Airport?

    While there are no hotels located onsite at Seattle-Tacoma International Airport, there is a cluster of hotels just shy of a mile away from the airport’s terminals. Hilton Seattle Airport & Conference Center, Crowne Plaza Seattle Airport, and Seattle Airport Marriott all are within a mile of the airport and offer free airport pickup and drop-off.

  • Can I fly from Boston to Seattle non-stop?

    Alaska Airlines, jetBlue Airways, and Delta Air Lines all offer nonstop flights from Boston to Seattle. One-stop flights are also common between the two cities, with flights offered by airlines such as United Airlines, Delta Air Lines, and American Airlines. Common layover cities for such flights include Washington D.C., Detroit, and Philadelphia.

  • What is the quickest way from Seattle-Tacoma International Airport to downtown Seattle?

    If you are not renting or driving a vehicle, Link Light Rail is the quickest way to get from the airport to downtown Seattle. Link Light Rail trains connect Seattle-Tacoma International Airport directly to downtown Seattle, and they even run all the way north up to the University of Washington. The airport’s Link station is found on the fourth floor of the adjacent parking garage.

  • What facilities are available for children in Seattle-Tacoma International Airport and Boston Logan International Airport?

    Seattle-Tacoma International Airport and Boston Logan International Airport both have children’s play areas available. Seattle-Tacoma International Airport’s children’s play area, the Playroom, is located across from the Seattle Tap Room by the A gates in the Central Terminal. Boston Logan International Airport’s three children’s play areas are located by Gate 18 in Terminal A, Gate 30 in Terminal B, and Gate 25 in Terminal C.

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

    All the following airlines offer inflight Wi-Fi service on the Boston to Seattle flight route: JetBlue, Alaska Airlines, Delta, Hawaiian Airlines, Aeromexico, American Airlines, and Qatar Airways.

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

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

  • Which airline alliances offer flights from Boston to Seattle?

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

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

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

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

    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 Boston to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Boston 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 Boston to Seattle?

    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 Seattle with an airline and back to Boston with another airline.

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

    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 Seattle from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Boston to Seattle

  • Looking for a cheap flight from Seattle to Boston? 25% of our users found flights on this route for £102 or less round-trip.
  • Looking for a family-friendly diversion during your time at Boston Logan International Airport? A good option for art-loving families is Logan International’s Airport Public Art Program. The program features a variety of temporary exhibits that aim to enliven the airport’s environment while simultaneously educating the public.
  • For travelers flying with their four-legged companions on their flights from Boston to Seattle, you will be happy to hear that both airports have pet relief areas available. Boston Logan International Airport’s pet relief areas are located by the Arrivals area outside of the terminals as well as in Terminal E. In Seattle-Tacoma International Airport there are five pet relief areas: two outside of Baggage Claim and the three others by the N, S, and B Gates.
  • Boston Logan International Airport has plenty to offer in terms of dining that offers a bit of local flare. The Harpoon Tap Room, for instance, is a branch of Boston’s Harpoon Brewery and serves a variety of local brews along with a variety of barroom classics. Another local option is Dine Boston. Dine Boston offers a seasonal menu that is updated regularly by guest chefs from the Boston gastronomical scene.
  • For travelers picking up a rental car upon arriving at Seattle-Tacoma International Airport, the airport’s rental car facilities are found in a separate building that is accessible by 24/7 shuttle buses. The shuttle buses pick up from outside of Baggage Claim on both the north and south side of the terminal.
  • Traveling from the suburbs to Boston Logan International Airport? One easy option is to hop on the Logan Express instead of renting a car. The Logan Express features stops in many of Boston’s suburbs such as Framingham, Back Bay, and Woburn.
See more tips

Prefer to fly direct from Boston to Seattle?

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

Direct departures

Boston Logan Intl to Seattle/Tacoma Intl

Monday

Aer Lingus, Air France, Air Tahiti Nui, +17 more

Aer Lingus, Air France, +18 more

Tuesday

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

Aer Lingus, Air France, +16 more

Wednesday

Aer Lingus, Air France, Air Tahiti Nui, +16 more

Aer Lingus, Air France, +17 more

Thursday

Aer Lingus, Air France, Air Tahiti Nui, +16 more

Aer Lingus, Air France, +17 more

Friday

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

Aer Lingus, Air France, +16 more

Saturday

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

Aer Lingus, Air France, +16 more

Sunday

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

Aer Lingus, Air France, +16 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Boston Logan Intl

Monday

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

Air France, Air Tahiti Nui, +14 more

Tuesday

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

Air France, Air Tahiti Nui, +16 more

Wednesday

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

Air France, Air Tahiti Nui, +14 more

Thursday

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

Air France, Air Tahiti Nui, +16 more

Friday

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

Air France, Air Tahiti Nui, +14 more

Saturday

Aer Lingus, Air France, Air Tahiti Nui, +16 more

Aer Lingus, Air France, +17 more

Sunday

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

Air France, Air Tahiti Nui, +16 more

See more direct flights
See more direct flights

Top airline flying from Boston to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Boston to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9110 reviews
8.6crew
7.3entertainment
8.2boarding
7.3food
7.9comfort
Airline reviews

It was much better than expected. Short flight and smaller plane so no entertainment or food.

10.0 ExcellentAnonymous, Apr 2024SLC - SEA
Read more about Alaska Airlines reviews

It was much better than expected. Short flight and smaller plane so no entertainment or food.

It took around two hours to depart. Just sitting in the tamarack waiting. It impacted my traveling plans in a very dramatic way. When we returned, it took around two hours for us to be able to get our luggage. Ridiculous!!

I thought every thing was good with the acceptation of the long layover between Seattle and the Tampa trip.

While the flight and the legroom was good boarding took a long time. The different groups Boarding made no sense as those in the back of the flight boarded last causing delays as people try to find room for their luggage in the upper bins. While there were plenty of seats on the flights We were spaced so that some rows were filled and others were empty. My first flight was very crowded and uncomfortable. On the way back both flights did not have Wi-Fi nor the entertainment package. We were only made aware of this a few hours before the flight. Since the flight was in the morning, I was asleep and was not able to download Books or other media to my phone. This is my first time flying Alaska airlines and I will admit to thinking twice before I do so again.

Our flight was delayed by six hours, our plane never left Portland the night before but the airline didn’t inform anyone till two hours before a six am flight. The plane, our plane never left the west coast! No plane no flight, simply let folks know when you know, not hours and hours later. No one apologized, no one said much of anything, we were just expected to wait quietly and await instructions.

The staff were great and the layover times were excellent no multiple hours. I just hate the Boxed Water. So you really have to purchase high price water in the airport.

Both flights were delayed. We sat on the tarmac on Boise for 3 hours with little updates

This flight was significantly affected by poor wifi connections. I couldn’t get my work done because the wifi kept dropping. Even texts were not going through. There is no seat power in premium class either. I fly a lot. Today was my 10th flight in 4 weeks. This was by far the only flight that was sub par.

4 out of 4 flights cancelled or delayed. 5th trip with similar experience

On time, comfortable seats with plenty of leg room, nice staff. Pretty good!

Book cheap flights from Boston to Seattle

One-way flight deals

directAmerican Airlines
6h 15mBOS-SEA
directCondor
6h 15mBOS-SEA
directKLM
6h 23mBOS-SEA
directQatar Airways
6h 14mBOS-SEA
directJapan Airlines
6h 15mBOS-SEA
directAer Lingus
6h 12mBOS-SEA
directAir France
6h 23mBOS-SEA
directDelta
6h 20mBOS-SEA
directChina Eastern
6h 20mBOS-SEA
directHainan Airlines
5h 50mBOS-SEA
directEL AL
6h 15mBOS-SEA
directAlaska Airlines
6h 15mBOS-SEA
directJetBlue
6h 13mBOS-SEA
directEtihad Airways
6h 12mBOS-SEA
directLATAM Airlines
6h 17mBOS-SEA
directFinnair
6h 14mBOS-SEA
directHawaiian Airlines
6h 13mBOS-SEA
directKorean Air
6h 20mBOS-SEA
directAir Tahiti Nui
6h 15mBOS-SEA
directTAP AIR PORTUGAL
6h 13mBOS-SEA
directVirgin Atlantic
6h 20mBOS-SEA
directSingapore Airlines
6h 23mBOS-SEA

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Boston - Seattle Flights

Departure:

Boston (BOS)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Boston

Cabin classes:

£940
£102

Browse origins:

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  • Boston

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  • Seattle