Seattle

$138+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
Jul 8 — Jul 151
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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 July 3, 2025.

Round-trip from

$217
(Delta)

One-way from

$138
(Alaska Airlines)

Popular in

August

Cheapest in

January

Average price

$471

Good round-trip deal

$305 or less

Good one-way deal

$190 or less
From Massachusetts to Seattle/Tacoma Intl
One-way flight from Massachusetts to Seattle/Tacoma Intl
Highest demand for flights based on searches. 18% potential increase in price ($82 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from Massachusetts to Seattle/Tacoma Intl.
Price to beat on a one-way flight from Massachusetts to Seattle/Tacoma Intl.

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 July 3, 2025.

This Delta deal was found by Cheapflights users on 7/2. 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.
Wed 9/177:25 amBOS - SEA
Nonstop6h 18mDelta
Sat 9/207:50 amSEA - BOS
Nonstop5h 32mDelta
Deal found 7/2$217
This Hawaiian Airlines deal was found by Cheapflights users on 7/2. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/39:20 amBOS - SEA
Nonstop6h 14mHawaiian Airlines
Mon 9/83:59 pmSEA - BOS
Nonstop5h 28mHawaiian Airlines
Deal found 7/2$227
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 9/189:20 amBOS - SEA
Nonstop6h 14mAlaska Airlines
Thu 9/183:59 pmSEA - BOS
Nonstop5h 28mAlaska Airlines
Deal found 7/1$231
This JetBlue deal was found by Cheapflights users on 7/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/257:00 amBOS - SEA
Nonstop6h 20mJetBlue
Thu 9/411:30 amSEA - BOS
Nonstop5h 33mJetBlue
Deal found 7/1$242
This Southwest deal was found by Cheapflights users on 7/2. 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.
Mon 8/256:30 pmBOS - SEA
1 stop8h 35mSouthwest
Wed 9/39:10 pmSEA - BOS
1 stop9h 50mSouthwest
Deal found 7/2$252
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Mon 8/186:03 pmBOS - SEA
1 stop8h 56mUnited Airlines
Mon 8/257:00 pmSEA - BOS
1 stop7h 59mUnited Airlines
Deal found 7/2$267
This American Airlines deal was found by Cheapflights users on 7/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/214:34 pmBOS - SEA
1 stop9h 21mAmerican Airlines
Sat 8/305:35 amSEA - BOS
1 stop10h 51mAmerican Airlines
Deal found 7/3$268
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Sat 8/29:20 amBOS - SEA
Nonstop6h 15mMultiple Airlines
Sat 8/165:59 pmSEA - BOS
1 stop10h 31mMultiple Airlines
Deal found 7/2$274
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/184:13 pmALB - SEA
1 stop8h 47mAmerican Airlines
Sun 8/2412:46 amSEA - ALB
1 stop7h 32mAmerican Airlines
Deal found 7/1$383
This Southwest deal was found by Cheapflights users on 7/2. 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.
Mon 8/116:00 amALB - SEA
2 stops10h 10mSouthwest
Thu 8/149:10 pmSEA - ALB
1 stop7h 45mSouthwest
Deal found 7/2$385
This Delta deal was found by Cheapflights users on 7/2. 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.
Wed 10/85:30 amALB - SEA
2 stops17h 16mDelta
Thu 11/66:00 amSEA - ALB
1 stop8h 24mDelta
Deal found 7/2$388
This Southwest deal was found by Cheapflights users on 7/1. 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.
Thu 9/185:45 amBDL - SEA
2 stops10h 25mSouthwest
Mon 9/2211:10 pmSEA - BDL
2 stops9h 55mSouthwest
Deal found 7/1$392

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 July 3, 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

Wed 9/17

7:25 am-10:43 am

Nonstop6h 18m

Seattle/Tacoma Intl

Sat 9/20

7:50 am-4:22 pm

Nonstop5h 32m

$217

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 9/3

9:20 am-12:34 pm

Nonstop6h 14m

Seattle/Tacoma Intl

Mon 9/8

3:59 pm-12:27 am

Nonstop5h 28m

$227

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Thu 9/18

9:20 am-12:34 pm

Nonstop6h 14m

Seattle/Tacoma Intl

Thu 9/18

3:59 pm-12:27 am

Nonstop5h 28m

$231

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 8/25

6:30 pm-12:05 am

1 stop8h 35m

Seattle/Tacoma Intl

Wed 9/3

9:10 pm-10:00 am

1 stop9h 50m

$252

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 8/18

6:03 pm-11:59 pm

1 stop8h 56m

Seattle/Tacoma Intl

Mon 8/25

7:00 pm-5:59 am

1 stop7h 59m

$267

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Thu 8/21

4:34 pm-10:55 pm

1 stop9h 21m

Seattle/Tacoma Intl

Sat 8/30

5:35 am-7:26 pm

1 stop10h 51m

$268

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Sat 8/2

9:20 am-12:35 pm

Nonstop6h 15m

Seattle/Tacoma Intl

Sat 8/16

5:59 pm-7:30 am

1 stop10h 31m

$274

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 8/25

6:29 pm-9:59 pm

Nonstop6h 30m

Seattle/Tacoma Intl

Wed 9/3

11:30 am-8:03 pm

Nonstop5h 33m

$279

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 7/21

6:00 am-4:25 pm

3 stops37h 25m

Seattle/Tacoma Intl

Tue 7/29

5:30 pm-8:37 am

2 stops12h 07m

$311

AlbanySeattle

ALB - SEA

ALBSEA

Albany Intl

Mon 8/18

4:13 pm-10:00 pm

1 stop8h 47m

Seattle/Tacoma Intl

Sun 8/24

12:46 am-11:18 am

1 stop7h 32m

$383

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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 $238). Flying from Massachusetts to Seattle in July is currently the most expensive (average of $390). 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 July 3, 2025.

When flying from Massachusetts to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 3, 2025.

The most flights from USMA to SEA are scheduled on a Wednesday (45 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (23 on average).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated July 3, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Massachusetts to Seattle have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
8.0
Very good

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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?

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

    $138 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on JetBlue and United Airlines, with prices starting from $142 and $149, respectively.

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

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

    The top 3 most reliable airlines when flying from Massachusetts to Seattle are KLM (100%), Singapore Airlines (100%) and LATAM Airlines (91%).

  • What are the cheapest flights from Massachusetts to Seattle?

    While on average a flight from Massachusetts to Seattle is generally $1,327, our data shows the cheapest flight currently is $138. When looking at the most popular route, (Boston Logan Intl - Seattle/Tacoma Intl), you can expect to pay $217 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 $238). Flying from Massachusetts to Seattle in July is currently the most expensive (average of $390). 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 Massachusetts?

Book flights to Massachusetts if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Federal Way
Chehalis
Kirkland
Aberdeen
Shelton

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Massachusetts to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Massachusetts to Seattle

Discover the top 9 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$139Average$343FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$151Average$373FlexibilityNo cancel feeOn-time85%
DeltaCheapest$163Average$372FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$173Average$413FlexibilityNo cancel feeOn-time83%
Spirit AirlinesCheapest$187Average$271FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$219Average$464FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$226Average$429FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$228Average$388FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$282Average$440FlexibilityNo cancel feeOn-time63%

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