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$119+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
Oct 29 — Nov 51
Wed 10/29
Wed 11/5
1 adult, Economy
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Cheap flight deals from Seattle to Massachusetts

Keep the following information in mind while searching for Seattle to Massachusetts flight deals. Data was last updated September 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$182
(Trip.com)

One-way from

$119
(Delta)

Popular in

December

Cheapest in

January

Average price

$338

Good round-trip deal

$235 or less

Good one-way deal

$168 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boston Logan Intl flights.
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From Seattle/Tacoma Intl to Massachusetts
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One-way flight from Seattle/Tacoma Intl to Massachusetts
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High demand for flights, 4% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Massachusetts.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Massachusetts.
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Find 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 September 29, 2025.

This JetBlue deal was found by Cheapflights users on 9/26. 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.
Tue 10/211:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Sat 10/258:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/26$187
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 11/1211:10 pmSEA - BOS
Nonstop5h 19mHawaiian Airlines
Wed 11/196:23 pmBOS - SEA
Nonstop6h 28mHawaiian Airlines
Deal found 9/28$189
This Cheapflightsfares deal was found by Cheapflights users on 9/28. 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.
Mon 11/1011:10 pmSEA - BOS
Nonstop5h 19mAlaska Airlines
Thu 11/137:00 amBOS - SEA
Nonstop6h 35mAlaska Airlines
Deal found 9/28$191
This Trip.com deal was found by Cheapflights users on 9/28. 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.
Wed 11/123:59 pmSEA - BOS
Nonstop5h 21mAlaska Airlines
Wed 11/199:00 amBOS - SEA
Nonstop6h 35mAlaska Airlines
Deal found 9/28$192
This Trip.com deal was found by Cheapflights users on 9/27. 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.
Mon 10/201:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Sat 10/258:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/27$195
This Delta deal was found by Cheapflights users on 9/27. 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 10/2210:05 pmSEA - BOS
Nonstop5h 30mDelta
Wed 10/297:20 amBOS - SEA
Nonstop6h 25mDelta
Deal found 9/27$197
This KAYAK deal was found by Cheapflights users on 9/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1311:10 pmSEA - BOS
Nonstop5h 19mAlaska Airlines
Mon 11/177:00 amBOS - SEA
Nonstop6h 35mAlaska Airlines
Deal found 9/27$199
This JetBlue deal was found by Cheapflights users on 9/27. 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 10/201:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Thu 10/238:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/27$202
This American Airlines deal was found by Cheapflights users on 9/27. 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 11/1110:07 pmSEA - BOS
1 stop9h 22mAmerican Airlines
Tue 11/181:23 pmBOS - SEA
1 stop10h 16mAmerican Airlines
Deal found 9/27$206
This American Airlines deal was found by Cheapflights users on 9/27. 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.
Fri 10/2410:54 pmSEA - BOS
1 stop8h 20mAmerican Airlines
Tue 10/283:51 pmBOS - SEA
1 stop8h 32mAmerican Airlines
Deal found 9/27$207
This American Airlines deal was found by Cheapflights users on 9/27. 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 10/2112:34 amSEA - BOS
1 stop8h 37mAmerican Airlines
Wed 11/58:37 amBOS - SEA
1 stop9h 54mAmerican Airlines
Deal found 9/27$208
This Kissandfly.com deal was found by Cheapflights users on 9/27. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Tue 10/287:20 amBOS - SEA
Nonstop6h 25mJetBlue
Deal found 9/27$210

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 September 29, 2025.
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

Mon 10/27

11:10 pm-7:29 am

Nonstop5h 19m

Boston Logan Intl

Sat 11/8

7:00 am-10:35 am

Nonstop6h 35m

$197

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/22

3:35 pm-11:59 pm

Nonstop5h 24m

Boston Logan Intl

Tue 10/28

6:55 pm-10:22 pm

Nonstop6h 27m

$197

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 11/8

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Thu 11/13

7:15 am-10:45 am

Nonstop6h 30m

$197

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 10/20

1:10 pm-9:46 pm

Nonstop5h 36m

Boston Logan Intl

Thu 10/23

8:20 am-11:59 am

Nonstop6h 39m

$202

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 11/13

11:10 pm-7:29 am

Nonstop5h 19m

Boston Logan Intl

Mon 11/17

4:24 pm-12:44 pm

1 stop23h 20m

$227

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 10/20

1:57 pm-12:50 am

1 stop7h 53m

Boston Logan Intl

Fri 10/24

5:05 pm-11:29 pm

1 stop9h 24m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/15

6:00 am-5:54 pm

1 stop8h 54m

Boston Logan Intl

Wed 10/22

12:35 pm-6:49 pm

1 stop9h 14m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 11/5

3:59 pm-12:20 am

Nonstop5h 21m

Boston Logan Intl

Fri 11/7

9:00 am-12:35 pm

Nonstop6h 35m

$247

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 10/19

6:00 am-5:54 pm

1 stop8h 54m

Boston Logan Intl

Tue 10/21

4:25 pm-10:30 pm

1 stop9h 05m

$265

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 11/14

3:39 pm-11:55 pm

Nonstop5h 16m

Boston Logan Intl

Mon 11/17

8:59 pm-10:26 am

1 stop16h 27m

$270

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/28

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, January is the cheapest month in which you can book a flight from Seattle to Massachusetts (average of $218). Flying from Seattle to Massachusetts in July is currently the most expensive (average of $311). 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 September 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Massachusetts as you normally would.

Weekly flight availability from Seattle to Massachusetts

Explore weekly flight availability from Seattle to Massachusetts. 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 September 29, 2025.

The most flights from SEA to USMA are scheduled on a Friday (36 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (26 on average).

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 September 29, 2025.
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
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,755 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
JetBlue
7.2
Good
2,912 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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 24 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, Delta, and JetBlue fly from Seattle to Massachusetts in about 5h 19m. The time it takes to get you to your destination is usually consistent. The distance between Seattle and Massachusetts is about 2487 mi. Generally, flights for this route are nonstop.

  • 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 $119 on Alaska Airlines. Other airlines that offer cheap prices include United Airlines from $119 and American Airlines from $141 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 Air France (93%), EL AL (84%) or Virgin Atlantic (82%) 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 $827, 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 $187 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, January is the cheapest month in which you can book a flight from Seattle to Massachusetts (average of $218). Flying from Seattle to Massachusetts in July is currently the most expensive (average of $311). 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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Alternative routes for Seattle to Massachusetts

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$118Average$350FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$130Average$469FlexibilityNo cancel feeOn-time62%
DeltaCheapest$152Average$374FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$178Average$334FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$367FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$216Average$370FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$226Average$460FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$281Average$344FlexibilityNo cancel feeOn-time63%

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