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$118+ Cheap flights from Seattle (SEA) to Massachusetts

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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap flight deals from Seattle to Massachusetts

Cheapest flights from Seattle to Massachusetts
Explore the most affordable flight options available from Seattle to Massachusetts. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:45 pm
SEA
-
BOS
Nonstop5h 27m
Alaska Airlines
Tue 5/54:33 pm
BOS
-
SEA
Nonstop6h 22m
Alaska Airlines
Deal found 2/10$272
This Trip.com deal was found by Cheapflights users on 2/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:40 pm
SEA
-
BOS
Nonstop5h 14m
Hawaiian Airlines
Wed 3/114:36 pm
BOS
-
SEA
1 stop8h 42m
Hawaiian Airlines
Deal found 2/11$275
This American Airlines deal was found by Cheapflights users on 2/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/76:00 am
SEA
-
BOS
1 stop9h 10m
American Airlines
Sat 3/215:54 pm
BOS
-
SEA
1 stop9h 30m
American Airlines
Deal found 2/11$277
This Cheapflightsfares deal was found by Cheapflights users on 2/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
-
BOS
Nonstop5h 35m
JetBlue
Thu 5/281:00 pm
BOS
-
SEA
1 stop10h 53m
JetBlue
Deal found 2/9$281
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:15 am
SEA
-
BOS
Nonstop5h 27m
Delta
Wed 5/67:37 am
BOS
-
SEA
Nonstop6h 18m
Delta
Deal found 2/9$282
This SmartFares deal was found by Cheapflights users on 2/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/273:38 pm
SEA
-
BOS
Nonstop5h 21m
Alaska Airlines
Fri 4/36:10 pm
BOS
-
SEA
Nonstop6h 24m
Alaska Airlines
Deal found 2/10$283
This Delta deal was found by Cheapflights users on 2/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:20 pm
SEA
-
BOS
Nonstop5h 30m
Delta
Wed 3/116:50 pm
BOS
-
SEA
Nonstop6h 20m
Delta
Deal found 2/11$284
This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:16 am
SEA
-
BOS
1 stop10h 07m
American Airlines
Sat 5/23:13 pm
BOS
-
SEA
1 stop12h 17m
American Airlines
Deal found 2/9$285
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Sat 5/22:23 pm
SEA
-
BOS
1 stop7h 36m
United Airlines
Sat 5/306:35 pm
BOS
-
SEA
1 stop8h 24m
United Airlines
Deal found 2/11$286
This Cheapflightsfares deal was found by Cheapflights users on 2/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:59 pm
SEA
-
BOS
1 stop11h 21m
JetBlue
Wed 6/37:00 am
BOS
-
SEA
Nonstop6h 20m
JetBlue
Deal found 2/10$291
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:00 pm
SEA
-
BOS
1 stop13h 02m
Alaska Airlines
Fri 10/238:50 am
BOS
-
SEA
1 stop10h 57m
Alaska Airlines
Deal found 2/9$292
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Wed 4/296:57 pm
SEA
-
BDL
2 stops21h 20m
Multiple Airlines
Thu 5/75:40 pm
BDL
-
SEA
1 stop29h 40m
Multiple Airlines
Deal found 2/10$342

Find flight deals from Seattle to Massachusetts

Keep the following information in mind while searching for Seattle to Massachusetts flight deals. Data was last updated February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$272
(Alaska Airlines)

One-way from

$118
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$357

Good round-trip deal

$332 or less

Good one-way deal

$200 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boston Logan Intl flights.
Search Deals
From Seattle/Tacoma Intl to Massachusetts
Search Deals
One-way flight from Seattle/Tacoma Intl to Massachusetts
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Massachusetts.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Massachusetts.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Massachusetts 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 12, 2026.
Use the filters below to find and compare flights from Seattle to Massachusetts that are best for you.

Fly from

Seattle

Fly to

Massachusetts

Route

Depart

Return

Price

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 5/24

11:10 pm-7:41 am

Nonstop5h 31m

Boston Logan Intl

Tue 6/2

7:08 pm-10:24 pm

Nonstop6h 16m

$272

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 5/5

10:45 pm-7:12 am

Nonstop5h 27m

Boston Logan Intl

Fri 5/8

6:42 pm-9:59 pm

Nonstop6h 17m

$272

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 4/19

10:35 pm-9:25 am

1 stop7h 50m

Boston Logan Intl

Wed 4/22

2:37 pm-8:53 pm

1 stop9h 16m

$277

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 5/12

4:05 pm-12:37 am

Nonstop5h 32m

Boston Logan Intl

Thu 6/4

7:30 pm-10:37 pm

Nonstop6h 07m

$282

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 4/9

3:45 pm-11:59 pm

Nonstop5h 14m

Boston Logan Intl

Tue 4/14

7:37 am-10:55 am

Nonstop6h 18m

$282

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 5/28

3:27 pm-11:59 pm

Nonstop5h 32m

Boston Logan Intl

Tue 6/2

6:00 am-11:53 am

1 stop8h 53m

$282

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 5/29

11:10 pm-7:41 am

Nonstop5h 31m

Boston Logan Intl

Tue 6/2

6:00 am-11:53 am

1 stop8h 53m

$282

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 4/7

11:45 pm-12:15 pm

2 stops9h 30m

Boston Logan Intl

Wed 4/15

2:25 pm-11:35 pm

2 stops12h 10m

$287

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 5/19

11:59 pm-2:16 pm

1 stop11h 17m

Boston Logan Intl

Tue 5/26

7:00 am-10:20 am

Nonstop6h 20m

$292

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 4/22

11:45 pm-12:40 pm

1 stop9h 55m

Boston Logan Intl

Tue 4/28

2:25 pm-10:30 pm

2 stops11h 05m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 60 results
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Best time to book a flight from Seattle to Massachusetts

Have a flexible travel schedule? Discover the best time to fly to Massachusetts from Seattle 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 Seattle to Massachusetts

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

Currently, March is the cheapest month in which you can book a flight from Seattle to Massachusetts (average of $108). Flying from Seattle to Massachusetts in January is currently the most expensive (average of $257). 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 SEA to MA?

Find hourly flight availability from Seattle to Massachusetts. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 12, 2026.

A simple way to save on the total cost of your ticket is to fly from Seattle to Massachusetts at noon. If you’re flexible enough to do this you can expect to save up to 45% on your trip compared to booking a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Massachusetts. Price data was last updated on February 7, 2026.

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

Reviews of airlines servicing Massachusetts

Get insights into the airlines that provide service to Massachusetts. 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 Massachusetts. Reviews last updated February 12, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to Massachusetts by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,878 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,878 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,181 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,833 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.2
Good
11,271 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
JetBlue
7.2
Good
2,895 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Massachusetts. 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 from for flights from Seattle to Massachusetts?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Massachusetts. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How popular is this Seattle to Massachusetts flight route?

    The Seattle/Tacoma Intl to Massachusetts flight path was viewed by 22 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 Seattle to Massachusetts?

    Airlines like Alaska Airlines, United Airlines, and Delta fly from Seattle to Massachusetts in about 5h 31m. The time it takes to get you to your destination can typically vary by up to 2h 19m. The distance between Seattle and Massachusetts is about 2487 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $98 on American Airlines. Other airlines that offer cheap prices include JetBlue from $115 and Alaska Airlines from $118 one-way.

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

    Most travelers choose Seattle/Tacoma Intl - Boston Logan Intl, Seattle/Tacoma Intl - Hartford Bradley Intl or Seattle/Tacoma Intl - Albany Intl when deciding on the best route from Seattle to Massachusetts.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Massachusetts consider choosing Scandinavian Airlines (94%), KLM (93%) or EL AL (92%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Massachusetts?

    While on average a flight from Seattle to Massachusetts is generally $888, our data shows the cheapest flight currently is $118. When looking at the most popular route, (Seattle/Tacoma Intl - Boston Logan Intl), you can expect to pay $242 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Massachusetts 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 Seattle to Massachusetts?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Massachusetts (average of $108). Flying from Seattle to Massachusetts in January is currently the most expensive (average of $257). 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.

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Top 8 airlines flying from Seattle to Massachusetts

Discover the top 8 airlines that operate flights from Seattle to Massachusetts. 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$118Average$296FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$124Average$321FlexibilityNo cancel feeOn-time62%
DeltaCheapest$144Average$380FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$178Average$384FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$386FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$223Average$457FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$236Average$457FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$281Average$343FlexibilityNo cancel feeOn-time63%

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