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$131+ Cheap flights from Massachusetts to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap flight deals from Massachusetts to Seattle

Cheapest flights from Massachusetts to Seattle
Explore the most affordable flight options available from Massachusetts to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/2511:49 amBOS - SEA
1 stop24h 29mSun Country Air
jue. 1/16:27 pmSEA - BOS
1 stop13h 24mSun Country Air
Deal found 12/11$381
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/176:00 amBOS - SEA
1 stop8h 47mUnited Airlines
mié. 12/3111:15 pmSEA - BOS
1 stop8h 22mUnited Airlines
Deal found 12/10$382
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2211:49 amBOS - SEA
1 stop25h 53mSun Country Air
lun. 12/299:32 amSEA - BOS
1 stop22h 19mSun Country Air
Deal found 12/10$396
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/2411:49 amBOS - SEA
1 stop8h 29mSun Country Air
sáb. 12/277:10 pmSEA - BOS
1 stop11h 07mSun Country Air
Deal found 12/10$397
This Kiwi.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/264:45 pmBOS - SEA
1 stop10h 56mAlaska Airlines
vie. 1/24:40 pmSEA - BOS
1 stop9h 30mAlaska Airlines
Deal found 12/11$406
This Kiwi.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/2411:49 amBOS - SEA
1 stop8h 29mSun Country Air
mié. 12/316:20 pmSEA - BOS
1 stop13h 31mSun Country Air
Deal found 12/11$447
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/176:00 amBOS - SEA
1 stop8h 47mUnited Airlines
jue. 1/111:59 pmSEA - BOS
1 stop9h 54mUnited Airlines
Deal found 12/10$455
This Kiwi.com deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/206:45 amBOS - SEA
1 stop8h 08mSun Country Air
sáb. 12/2711:59 pmSEA - BOS
1 stop7h 52mSun Country Air
Deal found 12/9$458
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/164:20 pmBOS - SEA
1 stop9h 18mUnited Airlines
jue. 1/111:59 pmSEA - BOS
1 stop8h 09mUnited Airlines
Deal found 12/10$477
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/256:00 amALB - SEA
1 stop9h 03mUnited Airlines
mié. 12/3111:15 pmSEA - ALB
1 stop8h 00mUnited Airlines
Deal found 12/11$480
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/233:15 pmBOS - SEA
1 stop9h 02mUnited Airlines
mar. 12/3011:15 pmSEA - BOS
1 stop8h 22mUnited Airlines
Deal found 12/10$482
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/256:00 amALB - SEA
1 stop9h 03mUnited Airlines
jue. 1/17:00 amSEA - ALB
1 stop7h 18mUnited Airlines
Deal found 12/11$520

Find flight deals from Massachusetts to Seattle

Keep the following information in mind while searching for Massachusetts to Seattle flight deals. Data was last updated diciembre 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$284
(SmartFares)

One-way from

$131
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$496

Good round-trip deal

$354 or less

Good one-way deal

$241 or less
Provider with most accurate pricing for Boston Logan Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Seattle/Tacoma Intl flights.
Search Deals
From Massachusetts to Seattle/Tacoma Intl
Search Deals
One-way flight from Massachusetts to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Massachusetts to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Massachusetts to Seattle/Tacoma Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Massachusetts to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 12, 2025.
Use the filters below to find and compare flights from Massachusetts to Seattle that are best for you.

Fly from

Massachusetts

Fly to

Seattle

Route

Depart

Return

Price

HartfordSeattle

BDL - SEA

BDLSEA

Hartford Bradley Intl

dom. 1/11

7:15 am-4:29 pm

2 stops36h 14m

Seattle/Tacoma Intl

sáb. 1/17

5:36 pm-6:00 am

1 stop9h 24m

$293

HartfordSeattle

BDL - SEA

BDLSEA

Hartford Bradley Intl

sáb. 1/10

12:38 pm-11:21 am

2 stops25h 43m

Seattle/Tacoma Intl

sáb. 1/17

5:36 pm-6:00 am

1 stop9h 24m

$306

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

jue. 3/12

7:00 am-10:33 am

Nonstop6h 33m

Seattle/Tacoma Intl

mié. 4/1

3:35 pm-11:54 pm

Nonstop5h 19m

$307

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

sáb. 2/28

7:15 am-10:45 am

Nonstop6h 30m

Seattle/Tacoma Intl

lun. 3/9

10:25 pm-6:49 am

Nonstop5h 24m

$307

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

vie. 1/23

6:45 pm-10:13 pm

Nonstop6h 28m

Seattle/Tacoma Intl

sáb. 1/31

7:40 am-4:09 pm

Nonstop5h 29m

$307

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

sáb. 2/28

6:24 pm-10:00 pm

Nonstop6h 36m

Seattle/Tacoma Intl

lun. 3/9

10:40 pm-6:54 am

Nonstop5h 14m

$307

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

sáb. 2/28

7:15 am-10:45 am

Nonstop6h 30m

Seattle/Tacoma Intl

lun. 3/2

10:20 pm-6:50 am

Nonstop5h 30m

$307

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

sáb. 1/24

6:44 pm-10:17 pm

Nonstop6h 33m

Seattle/Tacoma Intl

jue. 1/29

7:55 am-4:20 pm

Nonstop5h 25m

$307

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

sáb. 4/4

6:42 pm-10:05 pm

Nonstop6h 23m

Seattle/Tacoma Intl

mar. 4/14

3:55 pm-12:23 am

Nonstop5h 28m

$307

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

mié. 3/11

7:00 am-10:33 am

Nonstop6h 33m

Seattle/Tacoma Intl

sáb. 3/28

3:35 pm-11:54 pm

Nonstop5h 19m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 55 results
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Best time to book a flight from Massachusetts to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Massachusetts with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Massachusetts to Seattle

What is the cheapest month to book a flight from Massachusetts to Seattle?

Currently, January is the cheapest month in which you can book a flight from Massachusetts to Seattle (average of $98). Flying from Massachusetts to Seattle in December is currently the most expensive (average of $192). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MA to SEA?

Find hourly flight availability from Massachusetts to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 12, 2025.

It’s typically best to fly out from Massachusetts to Seattle in the evening. Doing so could potentially save you 35% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Massachusetts to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Massachusetts to Seattle. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Massachusetts to Seattle flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Massachusetts to Seattle

Explore weekly flight availability from Massachusetts to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated diciembre 12, 2025.

The most flights from USMA to SEA are scheduled on a Thursday (31 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (18 on average).

Related info for your journey

Find useful and relevant information for your journey from Massachusetts to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Massachusetts?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Seattle from Massachusetts.

  • How popular is this Massachusetts to Seattle flight route?

    This flight path from Massachusetts to Seattle/Tacoma Intl was viewed by 49 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Massachusetts to Seattle?

    There are many flights that can get you from Massachusetts to Seattle in 6h 30m. Fly via Alaska Airlines, Delta, or American Airlines to get the fastest option. The distance between Massachusetts and Seattle is about 2487 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Massachusetts to Seattle one-way?

    $98 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on JetBlue and Alaska Airlines, with prices starting from $107 and $108, respectively.

  • What are the most popular routes from Massachusetts to Seattle?

    The most popular route from Massachusetts to Seattle is Boston Logan Intl - Seattle/Tacoma Intl. You may also consider Hartford Bradley Intl - Seattle/Tacoma Intl or Albany Intl - Seattle/Tacoma Intl.

  • What are the most reliable airlines from Massachusetts to Seattle?

    The top 3 most reliable airlines when flying from Massachusetts to Seattle are TAP AIR PORTUGAL (100%), Japan Airlines (88%) and LATAM Airlines (88%).

  • What are the cheapest flights from Massachusetts to Seattle?

    While on average a flight from Massachusetts to Seattle is generally $996, our data shows the cheapest flight currently is $153. When looking at the most popular route, (Boston Logan Intl - Seattle/Tacoma Intl), you can expect to pay $284 for that flight.

  • Can I find deals for flights from Massachusetts to Seattle that include hotel bookings?

    Yes. In addition to deals on Massachusetts to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Massachusetts to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Massachusetts to Seattle.

  • Can I find deals for business class flights from Massachusetts to Seattle?

    Yes. Cheapflights offers flight deals from Massachusetts to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Massachusetts to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Massachusetts to Seattle (average of $98). Flying from Massachusetts to Seattle in December is currently the most expensive (average of $192). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

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Top 8 airlines flying from Massachusetts to Seattle

Discover the top 8 airlines that operate flights from Massachusetts to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$139Average$361FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$142Average$333FlexibilityNo cancel feeOn-time62%
DeltaCheapest$156Average$370FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$167Average$399FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$230Average$414FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$249Average$466FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$250Average$372FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$259Average$390FlexibilityNo cancel feeOn-time63%

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