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$79 Find Cheap Flights from Massachusetts to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Seattle departing on 11/20. 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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0 bags

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Good to know

Low season

January

High season

July

Cheapest flight

$79
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from Boston to Seattle

FAQs for booking flights from Massachusetts to Seattle

  • How does KAYAK find such low prices on flights from Massachusetts 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 Massachusetts to Seattle.

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts 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 Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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Flights from Massachusetts to Seattle: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Massachusetts to Seattle 
Verified travelerFlew with Alaska AirlinesBOS-SEAOct 2024
Flying Alaska Airlines from Boston to Seattle was an example of getting exactly what you expect. A no-frills basic experience, but one where the important things were accomplished, timely departure, on-time arrival, no drama, no glitches, completely as anticipated. I paid a little extra for one offered perk (seat selection), and I'm glad I did because my early morning flight was full. Next time, I'll likely pre-order a snack, since they looked good, were served promptly, and are priced right.
Verified travelerFlew with Alaska AirlinesBOS-SEASep 2024
I've always had my best luck with Delta and will stick with them in the future.
CarlaFlew with Alaska AirlinesBOS-SEAMay 2024
It’s a good choice. Seattle airport is huge and confusing if you are changing planes. Have plenty of time to switch.
GFlew with Alaska AirlinesBOS-SEAApr 2024
Would have liked to have more information on getting to my rental car off site It wasn't hard, but it would have taken less time and less wandering if it had been more clear
DavidFlew with Alaska AirlinesBOS-SEAFeb 2024
Not enough trips from Boston to Seattle to judge… flight times and boarding process were very positive.

Prefer to fly non-stop from Massachusetts to Seattle?

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

Nonstop departures

Massachusetts to Seattle/Tacoma Intl

Monday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Tuesday

ANA, Aer Lingus, Aeromexico, +59 more

ANA, Aer Lingus, +60 more

Wednesday

ANA, Aer Lingus, Aeromexico, +63 more

ANA, Aer Lingus, +64 more

Thursday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Friday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Saturday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Sunday

ANA, Aer Lingus, Aeromexico, +64 more

ANA, Aer Lingus, +65 more

See more direct flights

Nonstop returns

Seattle/Tacoma Intl to Massachusetts

Monday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Tuesday

ANA, Aer Lingus, Aeromexico, +59 more

ANA, Aer Lingus, +60 more

Wednesday

ANA, Aer Lingus, Aeromexico, +63 more

ANA, Aer Lingus, +64 more

Thursday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Friday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Saturday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Sunday

ANA, Aer Lingus, Aeromexico, +64 more

ANA, Aer Lingus, +65 more

See more direct flights
See more direct flights

Book cheap flights from Massachusetts to Seattle

Recent round-trip flight deals

12/7Sat
nonstopJetBlue
6h 21mBOS-SEA
12/11Wed
nonstopJetBlue
5h 20mSEA-BOS
$157
11/13Wed
nonstop
6h 20mBOS-SEA
12/4Wed
2 stops
21h 50mSEA-BOS
$161
11/20Wed
2 stopsSpirit Airlines
36h 00mBOS-SEA
12/4Wed
2 stopsSpirit Airlines
18h 23mSEA-BOS
$164
11/14Thu
1 stopAmerican Airlines
10h 39mBOS-SEA
11/19Tue
1 stopAmerican Airlines
8h 48mSEA-BOS
$176
11/20Wed
2 stopsSpirit Airlines
31h 53mBOS-SEA
12/4Wed
2 stopsSpirit Airlines
21h 50mSEA-BOS
$181
12/7Sat
nonstopAlaska Airlines
6h 37mBOS-SEA
12/10Tue
nonstopAlaska Airlines
5h 13mSEA-BOS
$192
12/6Fri
1 stopAmerican Airlines
10h 34mBOS-SEA
12/9Mon
1 stopAmerican Airlines
10h 25mSEA-BOS
$196
12/6Fri
nonstopDelta
6h 35mBOS-SEA
12/9Mon
nonstopDelta
5h 32mSEA-BOS
$197
11/14Thu
nonstopDelta
6h 45mBOS-SEA
11/20Wed
nonstopDelta
5h 32mSEA-BOS
$198
12/7Sat
nonstopAlaska Airlines
6h 37mBOS-SEA
12/9Mon
1 stopAlaska Airlines
17h 04mSEA-BOS
$206

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Recent one-way flight deals

11/20Wed
nonstopJetBlue
6h 30mBOS-SEA
$79
11/14Thu
1 stopAmerican Airlines
10h 39mBOS-SEA
$88
12/3Tue
3 stopsSpirit Airlines
24h 39mBOS-SEA
$93
11/19Tue
2 stopsSpirit Airlines
31h 12mBOS-SEA
$97
12/6Fri
nonstopDelta
6h 35mBOS-SEA
$99
11/28Thu
nonstopAlaska Airlines
6h 27mBOS-SEA
$104
11/13Wed
1 stopAlaska Airlines
16h 50mBOS-SEA
$114
11/17Sun
nonstopDelta
6h 45mBOS-SEA
$129
11/22Fri
2 stops
12h 08mBDL-SEA
$145
11/17Sun
3 stops
27h 39mBOS-SEA
$155

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Last minute flights from Massachusetts to Seattle

Last minute flight, train and bus deals

11/5Tue
multi-stopSpirit Airlines
18h 10mBOS-SEA
11/12Tue
multi-stopSpirit Airlines
22h 10mSEA-BOS
$349
11/4Mon
multi-stopSpirit Airlines
26h 39mBOS-SEA
11/12Tue
multi-stopSpirit Airlines
13h 31mSEA-BOS
$378
11/4Mon
nonstopDelta
6h 26mBOS-SEA
11/12Tue
nonstopDelta
5h 26mSEA-BOS
$437
11/4Mon
multi-stopDelta
9h 38mBOS-SEA
11/12Tue
nonstopDelta
5h 26mSEA-BOS
$447
11/4Mon
multi-stop
26h 39mBOS-SEA
11/6Wed
nonstop
5h 10mSEA-BOS
$450
11/1Fri
multi-stop
20h 56mBOS-SEA
11/4Mon
multi-stop
17h 34mSEA-BOS
$458
11/5Tue
nonstopAlaska Airlines
6h 20mBOS-SEA
11/15Fri
nonstopAlaska Airlines
5h 10mSEA-BOS
$467
11/4Mon
multi-stopAlaska Airlines
13h 08mBOS-SEA
11/12Tue
multi-stopAlaska Airlines
7h 50mSEA-BOS
$496
11/1Fri
multi-stopSun Country Air
8h 38mBOS-SEA
11/4Mon
multi-stopSun Country Air
17h 34mSEA-BOS
$510
11/1Fri
multi-stopSun Country Air
8h 38mBOS-SEA
11/4Mon
multi-stopSun Country Air
17h 34mSEA-BOS
$554

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Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle