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$125+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
1 adult, Economy
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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 November 12, 2025.

This KAYAK deal was found by Cheapflights users on 11/12. 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.
Wed 12/33:38 pmSEA - BOS
Nonstop5h 21mAlaska Airlines
Thu 1/157:00 amBOS - SEA
Nonstop6h 34mAlaska Airlines
Deal found 11/12$287
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Thu 12/43:38 pmSEA - BOS
Nonstop5h 21mHawaiian Airlines
Wed 12/107:00 amBOS - SEA
Nonstop6h 35mHawaiian Airlines
Deal found 11/12$295
This Kiwi.com deal was found by Cheapflights users on 11/10. 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.
Mon 12/19:53 pmSEA - BDL
1 stop19h 13mMultiple Airlines
Fri 12/51:19 pmBDL - SEA
2 stops25h 34mMultiple Airlines
Deal found 11/10$305
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:25 pmSEA - BOS
Nonstop5h 23mAlaska Airlines
Tue 1/66:06 pmBOS - SEA
Nonstop6h 24mAlaska Airlines
Deal found 11/11$306
This Delta deal was found by Cheapflights users on 11/12. 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 12/410:25 pmSEA - BOS
Nonstop5h 30mDelta
Wed 12/107:15 amBOS - SEA
Nonstop6h 30mDelta
Deal found 11/12$307
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:21 pmSEA - BDL
1 stop23h 36mMultiple Airlines
Sun 12/142:03 pmBDL - SEA
2 stops24h 50mMultiple Airlines
Deal found 11/11$311
This American Airlines deal was found by Cheapflights users on 11/12. 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 12/612:31 amSEA - BOS
1 stop7h 59mAmerican Airlines
Wed 12/101:45 pmBOS - SEA
1 stop12h 40mAmerican Airlines
Deal found 11/12$315
This Delta deal was found by Cheapflights users on 11/11. 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.
Wed 12/173:59 pmSEA - BOS
1 stop13h 58mDelta
Mon 1/56:45 pmBOS - SEA
Nonstop6h 28mDelta
Deal found 11/11$316
This Delta deal was found by Cheapflights users on 11/11. 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 12/2512:00 pmSEA - BDL
1 stop8h 36mDelta
Thu 1/15:30 amBDL - SEA
1 stop8h 05mDelta
Deal found 11/11$323
This American Airlines deal was found by Cheapflights users on 11/12. 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 12/3012:14 amSEA - ALB
1 stop8h 24mAmerican Airlines
Wed 1/143:48 pmALB - SEA
1 stop9h 19mAmerican Airlines
Deal found 11/12$355
This Kiwi.com deal was found by Cheapflights users on 11/10. 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.
Fri 11/281:01 pmSEA - BDL
2 stops27h 31mMultiple Airlines
Sat 12/68:10 amBDL - SEA
1 stop11h 26mMultiple Airlines
Deal found 11/10$383
This Southwest deal was found by Cheapflights users on 11/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:35 amSEA - ALB
1 stop6h 40mSouthwest
Wed 1/145:30 amALB - SEA
1 stop10h 45mSouthwest
Deal found 11/11$389

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 November 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$272
(Priceline)

One-way from

$125
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$358

Good round-trip deal

$306 or less

Good one-way deal

$181 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. 2% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 12, 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

Thu 12/4

3:40 pm-11:58 pm

Nonstop5h 18m

Boston Logan Intl

Sun 12/7

11:25 am-2:44 pm

Nonstop6h 19m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 2/13

3:42 pm-11:59 pm

Nonstop5h 17m

Boston Logan Intl

Sat 2/21

6:24 pm-10:00 pm

Nonstop6h 36m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 2/19

7:30 am-3:59 pm

Nonstop5h 29m

Boston Logan Intl

Wed 2/25

6:57 pm-10:25 pm

Nonstop6h 28m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 3/7

10:22 pm-6:50 am

Nonstop5h 28m

Boston Logan Intl

Sat 3/21

7:05 am-10:45 am

Nonstop6h 40m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 12/7

10:25 pm-6:55 am

Nonstop5h 30m

Boston Logan Intl

Wed 12/10

7:15 am-10:45 am

Nonstop6h 30m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 2/18

10:22 pm-6:50 am

Nonstop5h 28m

Boston Logan Intl

Wed 2/25

6:57 pm-10:25 pm

Nonstop6h 28m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 2/6

7:40 am-4:09 pm

Nonstop5h 29m

Boston Logan Intl

Sun 2/8

7:15 am-10:45 am

Nonstop6h 30m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 12/7

3:38 pm-11:59 pm

Nonstop5h 21m

Boston Logan Intl

Thu 12/11

4:24 pm-12:12 am

1 stop10h 48m

$317

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 12/4

3:38 pm-11:59 pm

Nonstop5h 21m

Boston Logan Intl

Wed 12/10

4:24 pm-12:12 am

1 stop10h 48m

$317

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 2/5

5:02 pm-3:20 pm

1 stop19h 18m

Boston Logan Intl

Sun 2/8

6:44 pm-10:17 pm

Nonstop6h 33m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

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 $98). Flying from Seattle to Massachusetts in August is currently the most expensive (average of $178). 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 November 12, 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 44% on your trip compared to booking a flight in the evening.

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 16, 2024.

Travelers seeking maximum savings on their Seattle to Massachusetts flight should consider departing on Wednesday mornings 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 November 12, 2025.

The most flights from SEA to USMA are scheduled on a Monday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 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 November 12, 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
11,279 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

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
11,279 reviews
Alaska Airlines
8.0
Very good
11,279 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

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
8,011 reviews
Alaska Airlines
8.0
Very good
11,279 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

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
2,809 reviews
Alaska Airlines
8.0
Very good
11,279 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

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
11,049 reviews
Alaska Airlines
8.0
Very good
11,279 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

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
2,907 reviews
Alaska Airlines
8.0
Very good
11,279 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

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, United Airlines, and Southwest fly from Seattle to Massachusetts in about 5h 18m. The time it takes to get you to your destination can typically vary by up to 1h 58m. 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 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 LATAM Airlines (89%), Condor (86%) or Scandinavian Airlines (80%) 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 $829, 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 $251 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 August is currently the most expensive (average of $178). 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

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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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$118Average$352FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$138Average$473FlexibilityNo cancel feeOn-time62%
DeltaCheapest$149Average$373FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$178Average$338FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$353FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$216Average$445FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$228Average$455FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$236Average$335FlexibilityNo cancel feeOn-time63%

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