HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$116+ 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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
nov. 16 — nov. 231
dom. 11/16
dom. 11/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Massachusetts to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find 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 octubre 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/309:00 amBOS - SEA
Nonstop6h 35mAlaska Airlines
mié. 11/53:59 pmSEA - BOS
Nonstop5h 21mAlaska Airlines
Deal found 10/15$218
This Vliegwinkel deal was found by Cheapflights users on 10/14. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/149:00 amBOS - SEA
Nonstop6h 35mMultiple Airlines
dom. 11/233:55 pmSEA - BOS
Nonstop5h 20mMultiple Airlines
Deal found 10/14$226
This Kiwi.com deal was found by Cheapflights users on 10/14. 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. 11/146:23 pmBOS - SEA
Nonstop6h 28mHawaiian Airlines
dom. 11/2311:25 pmSEA - BOS
Nonstop5h 17mHawaiian Airlines
Deal found 10/14$229
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/1411:10 amBOS - SEA
Nonstop6h 26mDelta
dom. 11/2310:05 pmSEA - BOS
Nonstop5h 30mDelta
Deal found 10/14$234
This Delta deal was found by Cheapflights users on 10/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/137:15 amBOS - SEA
Nonstop6h 30mDelta
sáb. 11/2210:05 pmSEA - BOS
Nonstop5h 30mDelta
Deal found 10/15$235
This Delta deal was found by Cheapflights users on 10/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/3111:10 amBOS - SEA
Nonstop6h 18mDelta
dom. 11/210:05 pmSEA - BOS
Nonstop5h 30mDelta
Deal found 10/16$237
This Trip.com deal was found by Cheapflights users on 10/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/74:24 pmBOS - SEA
1 stop10h 48mAlaska Airlines
jue. 12/1111:10 pmSEA - BOS
Nonstop5h 19mAlaska Airlines
Deal found 10/16$238
This Kiwi.com deal was found by Cheapflights users on 10/14. 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. 11/139:00 amBOS - SEA
Nonstop6h 35mAlaska Airlines
mar. 11/185:20 amSEA - BOS
1 stop7h 04mAlaska Airlines
Deal found 10/14$240
This Alaska Airlines deal was found by Cheapflights users on 10/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/207:00 amBOS - SEA
Nonstop6h 35mAlaska Airlines
lun. 11/2411:17 amSEA - BOS
1 stop15h 34mAlaska Airlines
Deal found 10/13$241
This United Airlines deal was found by Cheapflights users on 10/16. 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.
sáb. 11/18:00 amBOS - SEA
1 stop11h 15mUnited Airlines
mar. 11/47:00 amSEA - BOS
1 stop7h 15mUnited Airlines
Deal found 10/16$242
This Kiwi.com deal was found by Cheapflights users on 10/15. 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. 11/128:10 amBDL - SEA
1 stop27h 08mMultiple Airlines
mié. 11/191:37 pmSEA - BDL
2 stops17h 15mMultiple Airlines
Deal found 10/15$310
This Southwest deal was found by Cheapflights users on 10/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/316:15 amALB - SEA
1 stop8h 25mSouthwest
lun. 11/176:35 amSEA - ALB
1 stop6h 40mSouthwest
Deal found 10/15$315

Cheap flight deals from Massachusetts to Seattle

Keep the following information in mind while searching for Massachusetts to Seattle flight deals. Data was last updated octubre 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$218
(Cheapflightsfares)

One-way from

$116
(Alaska Airlines)

Popular in

August

Cheapest in

January

Average price

$328

Good round-trip deal

$310 or less

Good one-way deal

$191 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. 12% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Massachusetts to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Massachusetts to Seattle/Tacoma Intl.
Search Deals

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 octubre 17, 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

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

vie. 11/14

11:10 am-2:36 pm

Nonstop6h 26m

Seattle/Tacoma Intl

dom. 11/23

10:05 pm-6:35 am

Nonstop5h 30m

$234

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

mié. 11/5

7:20 am-10:45 am

Nonstop6h 25m

Seattle/Tacoma Intl

sáb. 11/8

7:50 am-4:22 pm

Nonstop5h 32m

$237

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

lun. 11/3

6:55 pm-10:22 pm

Nonstop6h 27m

Seattle/Tacoma Intl

dom. 11/9

10:05 pm-6:35 am

Nonstop5h 30m

$237

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

dom. 11/9

7:15 am-10:45 am

Nonstop6h 30m

Seattle/Tacoma Intl

sáb. 11/15

3:39 pm-11:55 pm

Nonstop5h 16m

$237

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

lun. 11/10

7:00 pm-10:31 pm

Nonstop6h 31m

Seattle/Tacoma Intl

dom. 11/16

10:05 pm-6:35 am

Nonstop5h 30m

$237

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

lun. 11/10

7:00 pm-10:31 pm

Nonstop6h 31m

Seattle/Tacoma Intl

sáb. 11/15

7:30 am-4:00 pm

Nonstop5h 30m

$237

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

sáb. 12/6

6:55 pm-10:15 pm

Nonstop6h 20m

Seattle/Tacoma Intl

sáb. 12/13

7:35 am-4:03 pm

Nonstop5h 28m

$237

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

vie. 11/14

9:00 am-12:35 pm

Nonstop6h 35m

Seattle/Tacoma Intl

lun. 11/17

9:32 pm-3:41 pm

1 stop15h 09m

$247

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

jue. 10/30

12:05 pm-6:00 pm

1 stop8h 55m

Seattle/Tacoma Intl

sáb. 11/8

5:45 am-4:05 pm

1 stop7h 20m

$247

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

vie. 10/31

7:00 am-10:35 am

Nonstop6h 35m

Seattle/Tacoma Intl

mar. 11/4

8:25 pm-3:41 pm

1 stop16h 16m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 60 results
1
2
3
...
6

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 August is currently the most expensive (average of $178). 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 octubre 17, 2025.

It’s typically best to fly out from Massachusetts to Seattle in the evening. Doing so could potentially save you 33% 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 octubre 17, 2025.

The most flights from USMA to SEA are scheduled on a Thursday (37 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (26 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 51 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 26m. Fly via Delta, United Airlines, or Southwest 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?

    $119 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Alaska Airlines and United Airlines, with prices starting from $119 and $162, 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 Albany Intl - Seattle/Tacoma Intl or Hartford Bradley 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 LATAM Airlines (96%), American Airlines (89%) and TAP AIR PORTUGAL (86%).

  • What are the cheapest flights from Massachusetts to Seattle?

    While on average a flight from Massachusetts to Seattle is generally $1,004, our data shows the cheapest flight currently is $108. When looking at the most popular route, (Boston Logan Intl - Seattle/Tacoma Intl), you can expect to pay $226 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 August is currently the most expensive (average of $178). 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
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Marysville
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Massachusetts to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Seattle flights
Dallas/Fort Worth to Seattle flights
John F Kennedy Intl to Seattle flights
Ontario to Seattle flights
San Francisco to Seattle flights
O'Hare Intl to Seattle flights
Hobby to Seattle flights
Dulles Intl to Seattle flights
Minneapolis to Seattle flights
Reagan-National to Seattle flights
Sky Harbor Intl to Seattle flights
Santa Ana to Seattle flights
San Jose to Seattle flights
Los Angeles to Portland flights
San Diego to Seattle flights
Atlanta to Seattle flights
Newark to Seattle flights
George Bush Intcntl to Seattle flights
LaGuardia to Seattle flights
Denver to Seattle flights
Boston to Seattle flights
Austin to Seattle flights
San Francisco to Portland flights
Baltimore to Seattle flights
Orlando to Seattle flights
John F Kennedy Intl to Portland flights
Salt Lake City to Seattle flights
Ontario to Portland flights
O'Hare Intl to Portland flights
Minneapolis to Portland flights
Oakland to Seattle flights
Detroit to Seattle flights
Denver to Portland flights
Las Vegas to Seattle flights
Los Angeles to Everett flights
Sacramento to Seattle flights
Dallas/Fort Worth to Portland flights
Spokane to Seattle flights
Newark to Portland flights
Boise to Seattle flights
Salt Lake City to Portland flights
Honolulu to Seattle flights
Sky Harbor Intl to Portland flights
Love Field to Seattle flights
Santa Ana to Portland flights
Tampa to Seattle flights
San Francisco to Everett flights
Hobby to Portland flights
Raleigh to Seattle flights
Midway to Seattle flights

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 octubre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$133Average$326FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$139Average$361FlexibilityNo cancel feeOn-time85%
DeltaCheapest$150Average$363FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$167Average$400FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$216Average$448FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$217Average$414FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$233Average$366FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$259Average$394FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.