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$99+ 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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$148
(SmartFares)

One-way from

$99
(Delta)

Popular in

July

Cheapest in

January

Average price

$297

Good round-trip deal

$295 or less

Good one-way deal

$154 or less
Provider with most accurate pricing for Boston Logan Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Seattle/Tacoma Intl flights.
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From Massachusetts to Seattle/Tacoma Intl
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One-way flight from Massachusetts to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 27% potential increase in price ($139 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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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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 February 20, 2025.

This SmartFares deal was found by Cheapflights users on 2/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/245:30 pmBOS - SEA
Nonstop6h 24mAlaska Airlines
Thu 3/2711:30 pmSEA - BOS
Nonstop5h 22mAlaska Airlines
Deal found 2/20$148
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 3/36:24 pmBOS - SEA
Nonstop6h 35mHawaiian Airlines
Mon 3/311:30 pmSEA - BOS
Nonstop5h 14mHawaiian Airlines
Deal found 2/20$151
This JetBlue deal was found by Cheapflights users on 2/20. 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.
Wed 3/57:19 pmBOS - SEA
Nonstop6h 19mJetBlue
Wed 3/1211:48 pmSEA - BOS
Nonstop5h 11mJetBlue
Deal found 2/20$157
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/512:15 pmBOS - SEA
2 stops26h 31mMultiple Airlines
Mon 3/1011:30 pmSEA - BOS
Nonstop5h 14mMultiple Airlines
Deal found 2/19$176
This American Airlines deal was found by Cheapflights users on 2/20. 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 2/274:10 pmBOS - SEA
1 stop8h 59mAmerican Airlines
Tue 3/410:21 pmSEA - BOS
1 stop8h 29mAmerican Airlines
Deal found 2/20$177
This Delta deal was found by Cheapflights users on 2/20. 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.
Thu 3/67:10 amBOS - SEA
Nonstop6h 35mDelta
Sat 3/810:29 pmSEA - BOS
Nonstop5h 26mDelta
Deal found 2/20$197
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/118:35 pmBOS - SEA
2 stops25h 27mSpirit Airlines
Mon 3/249:48 amSEA - BOS
3 stops45h 11mSpirit Airlines
Deal found 2/19$199
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 3/52:00 pmBOS - SEA
1 stop9h 19mUnited Airlines
Wed 3/127:10 pmSEA - BOS
1 stop7h 39mUnited Airlines
Deal found 2/20$248
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1910:45 amBDL - SEA
3 stops35h 24mMultiple Airlines
Wed 3/269:48 amSEA - BDL
3 stops33h 32mMultiple Airlines
Deal found 2/19$255
This Southwest deal was found by Cheapflights users on 2/19. 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.
Tue 3/42:05 pmBOS - SEA
1 stop11h 35mSouthwest
Wed 3/129:20 amSEA - BOS
2 stops10h 25mSouthwest
Deal found 2/19$299
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1111:36 amBDL - SEA
3 stops34h 26mSpirit Airlines
Sun 3/167:57 pmSEA - BDL
3 stops35h 44mSpirit Airlines
Deal found 2/20$300
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 3/186:30 pmBDL - SEA
1 stop9h 18mAmerican Airlines
Tue 3/2511:59 pmSEA - BDL
1 stop14h 28mAmerican Airlines
Deal found 2/19$330

Find flights from Massachusetts to Seattle within your budget

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 February 20, 2025.

Fly from

Massachusetts

Fly to

Seattle

Route

Depart

Return

Price

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 3/24

5:30 pm-8:54 pm

Nonstop6h 24m

Seattle/Tacoma Intl

Thu 3/27

11:30 pm-7:52 am

Nonstop5h 22m

$148

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 3/3

6:24 pm-9:59 pm

Nonstop6h 35m

Seattle/Tacoma Intl

Mon 3/3

11:30 pm-7:44 am

Nonstop5h 14m

$151

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 3/5

7:19 pm-10:38 pm

Nonstop6h 19m

Seattle/Tacoma Intl

Wed 3/12

11:48 pm-7:59 am

Nonstop5h 11m

$157

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 3/5

12:15 pm-11:46 am

2 stops26h 31m

Seattle/Tacoma Intl

Mon 3/10

11:30 pm-7:44 am

Nonstop5h 14m

$176

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 3/26

11:47 am-7:15 pm

1 stop10h 28m

Seattle/Tacoma Intl

Tue 4/1

11:59 pm-10:38 am

1 stop7h 39m

$179

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Thu 3/6

7:10 am-10:45 am

Nonstop6h 35m

Seattle/Tacoma Intl

Sat 3/8

10:29 pm-6:55 am

Nonstop5h 26m

$197

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 3/11

8:35 pm-7:02 pm

2 stops25h 27m

Seattle/Tacoma Intl

Mon 3/24

9:48 am-9:59 am

3 stops45h 11m

$199

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 3/5

2:00 pm-8:19 pm

1 stop9h 19m

Seattle/Tacoma Intl

Wed 3/12

7:10 pm-5:49 am

1 stop7h 39m

$248

HartfordSeattle

BDL - SEA

BDLSEA

Hartford Bradley Intl

Wed 3/19

10:45 am-7:09 pm

3 stops35h 24m

Seattle/Tacoma Intl

Wed 3/26

9:48 am-10:20 pm

3 stops33h 32m

$255

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 3/4

2:05 pm-10:40 pm

1 stop11h 35m

Seattle/Tacoma Intl

Wed 3/12

9:20 am-10:45 pm

2 stops10h 25m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 47 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.

Travel insights for flights from Massachusetts to Seattle

Get recent, data-driven insights about flights from Massachusetts to Seattle including ideal travel times, pricing trends, and more.

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 $411). 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 February 20, 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 February 20, 2025.

The most flights from USMA to SEA are scheduled on a Monday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 February 20, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Massachusetts to Seattle to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 62 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    $99 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Spirit Airlines and Hawaiian Airlines, with prices starting from $100 and $119, 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 Korean Air (89%), Condor (86%) and British Airways (85%).

  • What are the cheapest flights from Massachusetts to Seattle?

    While on average a flight from Massachusetts to Seattle is generally $889, our data shows the cheapest flight currently is $104. When looking at the most popular route, (Boston Logan Intl - Seattle/Tacoma Intl), you can expect to pay $157 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 $411). 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
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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Alternative routes for Massachusetts to Seattle

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$142Average$401FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$174Average$377FlexibilityNo cancel feeOn-time83%
DeltaCheapest$180Average$413FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$192Average$289FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$208Average$458FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$210Average$455FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$422FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$396Average$521FlexibilityNo cancel feeOn-time63%
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