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$129+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
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 December 28, 2025.

This United Airlines deal was found by Cheapflights users on 12/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:00 amSEA - BOS
1 stop9h 10mUnited Airlines
Thu 1/84:16 pmBOS - SEA
1 stop9h 27mUnited Airlines
Deal found 12/27$507
This United Airlines deal was found by Cheapflights users on 12/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:00 amSEA - BOS
1 stop7h 48mUnited Airlines
Tue 1/69:30 amBOS - SEA
2 stops11h 44mUnited Airlines
Deal found 12/26$512
This United Airlines deal was found by Cheapflights users on 12/25. 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 12/2911:15 pmSEA - BOS
1 stop8h 22mUnited Airlines
Mon 1/1210:56 amBOS - SEA
1 stop10h 31mUnited Airlines
Deal found 12/25$547
This United Airlines deal was found by Cheapflights users on 12/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:00 amSEA - BOS
1 stop7h 17mUnited Airlines
Mon 1/58:00 amBOS - SEA
1 stop11h 52mUnited Airlines
Deal found 12/26$553
This United Airlines deal was found by Cheapflights users on 12/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:52 amSEA - BOS
2 stops10h 02mUnited Airlines
Mon 1/55:20 amBOS - SEA
1 stop9h 07mUnited Airlines
Deal found 12/27$571
This United Airlines deal was found by Cheapflights users on 12/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:00 amSEA - BOS
1 stop7h 17mUnited Airlines
Tue 1/67:55 amBOS - SEA
1 stop10h 49mUnited Airlines
Deal found 12/27$622
This American Airlines deal was found by Cheapflights users on 12/27. 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.
Wed 12/316:00 amSEA - BDL
1 stop12h 24mAmerican Airlines
Wed 1/77:01 amBDL - SEA
1 stop16h 44mAmerican Airlines
Deal found 12/27$673
This American Airlines deal was found by Cheapflights users on 12/27. 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 12/3010:13 pmSEA - BDL
1 stop11h 58mAmerican Airlines
Thu 1/17:50 amBDL - SEA
1 stop16h 20mAmerican Airlines
Deal found 12/27$734
This Kiwi.com deal was found by Cheapflights users on 12/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:46 pmSEA - BDL
1 stop28h 55mMultiple Airlines
Wed 1/76:00 amBDL - SEA
2 stops30h 04mMultiple Airlines
Deal found 12/27$770
This Kiwi.com deal was found by Cheapflights users on 12/25. 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.
Fri 12/267:48 pmSEA - BDL
1 stop31h 27mMultiple Airlines
Fri 1/27:00 amBDL - SEA
2 stops20h 42mMultiple Airlines
Deal found 12/25$840
This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:00 amSEA - BDL
1 stop12h 31mAmerican Airlines
Sat 1/37:50 amBDL - SEA
1 stop14h 38mAmerican Airlines
Deal found 12/26$842
This American Airlines deal was found by Cheapflights users on 12/25. 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 12/2610:13 pmSEA - BDL
1 stop11h 58mAmerican Airlines
Thu 1/19:59 amBDL - SEA
1 stop12h 29mAmerican Airlines
Deal found 12/25$873

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 December 28, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$297
(Kiwi.com)

One-way from

$129
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$537

Good round-trip deal

$346 or less

Good one-way deal

$279 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. 9% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 28, 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

Wed 3/25

10:25 pm-6:50 am

Nonstop5h 25m

Boston Logan Intl

Thu 4/2

11:15 am-2:35 pm

Nonstop6h 20m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 2/2

3:40 pm-11:54 pm

Nonstop5h 14m

Boston Logan Intl

Wed 2/4

7:00 am-10:34 am

Nonstop6h 34m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 1/14

8:10 am-6:57 pm

1 stop7h 47m

Boston Logan Intl

Tue 1/20

7:55 am-3:44 pm

1 stop10h 49m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 1/31

10:25 pm-6:50 am

Nonstop5h 25m

Boston Logan Intl

Sat 2/21

6:57 pm-10:25 pm

Nonstop6h 28m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 1/27

3:40 pm-11:54 pm

Nonstop5h 14m

Boston Logan Intl

Sat 1/31

7:00 am-10:34 am

Nonstop6h 34m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 2/5

7:40 am-4:09 pm

Nonstop5h 29m

Boston Logan Intl

Sun 2/8

6:45 pm-10:13 pm

Nonstop6h 28m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 4/30

3:21 pm-11:59 pm

Nonstop5h 38m

Boston Logan Intl

Thu 5/7

6:42 pm-9:59 pm

Nonstop6h 17m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 3/24

10:25 pm-6:50 am

Nonstop5h 25m

Boston Logan Intl

Tue 3/31

7:10 am-10:37 am

Nonstop6h 27m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 3/23

10:15 pm-6:39 am

Nonstop5h 24m

Boston Logan Intl

Fri 3/27

7:15 am-10:40 am

Nonstop6h 25m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 3/13

3:45 pm-11:59 pm

Nonstop5h 14m

Boston Logan Intl

Wed 3/18

7:10 am-10:37 am

Nonstop6h 27m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 53 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 $98). Flying from Seattle to Massachusetts in December is currently the most expensive (average of $233). 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 December 28, 2025.

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 41% 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 December 27, 2025.

Travelers seeking maximum savings on their Seattle to Massachusetts flight should consider departing on Wednesday 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.

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 December 28, 2025.

The most flights from SEA to USMA are scheduled on a Friday (27 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 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 December 28, 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
11,550 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

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
11,550 reviews
Alaska Airlines
8.0
Very good
11,550 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

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
7.9
Good
8,022 reviews
Alaska Airlines
8.0
Very good
11,550 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

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
2,819 reviews
Alaska Airlines
8.0
Very good
11,550 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

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
11,070 reviews
Alaska Airlines
8.0
Very good
11,550 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

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
2,902 reviews
Alaska Airlines
8.0
Very good
11,550 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

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 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 Delta, Alaska Airlines, and American Airlines fly from Seattle to Massachusetts in about 5h 14m. The time it takes to get you to your destination can typically vary by up to 6h 16m. 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 $108 and Delta 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 TAP AIR PORTUGAL (100%), JetBlue (90%) or EL AL (89%) 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 $922, our data shows the cheapest flight currently is $153. When looking at the most popular route, (Seattle/Tacoma Intl - Boston Logan Intl), you can expect to pay $246 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 $98). Flying from Seattle to Massachusetts in December is currently the most expensive (average of $233). 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$118Average$352FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$145Average$475FlexibilityNo cancel feeOn-time62%
DeltaCheapest$167Average$380FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$196Average$383FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$209Average$382FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$233Average$457FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$237Average$465FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$281Average$344FlexibilityNo cancel feeOn-time63%

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