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Cheap flights from Seattle to Massachusetts from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Massachusetts departing on 2/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Massachusetts

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:10 pm - 5:52 am
SEA
-
BOS
7h 42m
1 stop
United Airlines Logo
2:20 pm - 8:56 pm
BOS
-
SEA
9h 36m
1 stop
$282United Airlines
Thu, Feb 19 - Sat, Feb 28
United Airlines Logo
7:05 pm - 6:04 am
SEA
-
BOS
7h 59m
1 stop
United Airlines Logo
6:00 am - 11:57 am
BOS
-
SEA
8h 57m
1 stop
$285United Airlines
Wed, May 20 - Tue, Jun 9
JetBlue Logo
11:59 pm - 2:20 pm
SEA
-
BOS
11h 21m
1 stop
JetBlue Logo
7:00 am - 10:20 am
BOS
-
SEA
6h 20mnonstop
$286JetBlue
Thu, May 28 - Tue, Jun 2
Southwest Logo
6:45 am - 5:10 pm
SEA
-
BOS
7h 25m
1 stop
Southwest Logo
1:20 pm - 10:30 pm
BOS
-
SEA
12h 10m
2 stops
$287Southwest
Tue, Mar 3 - Wed, Mar 4
American Airlines Logo
12:07 am - 11:28 am
SEA
-
BOS
8h 21m
1 stop
American Airlines Logo
5:31 pm - 12:24 am
BOS
-
SEA
9h 53m
1 stop
$290American Airlines
Wed, Mar 11 - Wed, Mar 18
American Airlines Logo
12:07 am - 10:46 am
SEA
-
BOS
7h 39m
1 stop
American Airlines Logo
4:40 pm - 12:24 am
BOS
-
SEA
10h 44m
1 stop
$291American Airlines
Wed, Mar 11 - Wed, Mar 18
Alaska Airlines Logo
4:53 pm - 5:49 am
SEA
-
BOS
9h 56m
1 stop
Alaska Airlines Logo
8:05 am - 6:15 pm
BOS
-
SEA
13h 10m
1 stop
$292Alaska Airlines
Tue, May 19 - Thu, May 28
Delta Logo
1:30 pm - 11:12 pm
SEA
-
BDL
6h 42m
1 stop
Delta Logo
4:54 pm - 10:15 pm
BDL
-
SEA
8h 21m
1 stop
$385Delta
Wed, Mar 11 - Tue, Mar 31
Delta Logo
11:53 pm - 2:19 pm
SEA
-
MVY
11h 26m
2 stops
Delta Logo
3:10 pm - 10:16 pm
MVY
-
SEA
10h 06m
1 stop
$862Delta
Wed, Jul 1 - Mon, Jul 6
JetBlue Logo
11:59 pm - 10:38 am
SEA
-
MVY
7h 39m
1 stop
JetBlue Logo
11:25 am - 8:53 pm
MVY
-
SEA
12h 28m
1 stop
$919JetBlue
Thu, Jun 25 - Sun, Jun 28

American Airlines flights from Seattle to Massachusetts

Our best American Airlines deals on Seattle to Massachusetts flight tickets
American Airlines
Mar 11
SEA12:07 amSeattle/Tacoma Intl
8h 21m
1 stop
BOS11:28 amBoston Logan Intl
Mar 18
BOS4:40 pmBoston Logan Intl
9h 24m
1 stop
SEA11:04 pmSeattle/Tacoma Intl
$290
American Airlines
Mar 11
SEA12:07 amSeattle/Tacoma Intl
7h 39m
1 stop
BOS10:46 amBoston Logan Intl
Mar 18
BOS4:40 pmBoston Logan Intl
10h 44m
1 stop
SEA12:24 amSeattle/Tacoma Intl
$291
American Airlines
Mar 3
SEA10:57 pmSeattle/Tacoma Intl
7h 33m
1 stop
BOS9:30 amBoston Logan Intl
Mar 10
BOS9:02 amBoston Logan Intl
6h 33m
SEA12:35 pmSeattle/Tacoma Intl
$349

Alaska Airlines flights from Seattle to Massachusetts

Our best Alaska Airlines deals on Seattle to Massachusetts flight tickets
Alaska Airlines
May 19
SEA3:02 pmSeattle/Tacoma Intl
11h 47m
1 stop
BOS5:49 amBoston Logan Intl
May 23
BOS8:05 amBoston Logan Intl
13h 10m
1 stop
SEA6:15 pmSeattle/Tacoma Intl
$292
Alaska Airlines
May 20
SEA3:27 pmSeattle/Tacoma Intl
5h 32m
BOS11:59 pmBoston Logan Intl
Jun 2
BOS8:05 amBoston Logan Intl
10h 54m
1 stop
SEA3:59 pmSeattle/Tacoma Intl
$317
Alaska Airlines
Feb 24
SEA10:40 pmSeattle/Tacoma Intl
5h 14m
BOS6:54 amBoston Logan Intl
Feb 25
BOS9:02 amBoston Logan Intl
6h 33m
SEA12:35 pmSeattle/Tacoma Intl
$347

momondo 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, momondo users made 832,500 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Seattle to Massachusetts that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 2/19

7:10 pm-5:52 am

1 stop7h 42m

Boston Logan Intl

Sat 2/28

2:20 pm-8:56 pm

1 stop9h 36m

$282

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 5/20

7:05 pm-6:04 am

1 stop7h 59m

Boston Logan Intl

Tue 6/9

6:00 am-11:57 am

1 stop8h 57m

$285

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 5/28

11:59 pm-2:20 pm

1 stop11h 21m

Boston Logan Intl

Tue 6/2

7:00 am-10:20 am

Nonstop6h 20m

$286

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 3/3

6:45 am-5:10 pm

1 stop7h 25m

Boston Logan Intl

Wed 3/4

1:20 pm-10:30 pm

2 stops12h 10m

$287

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 3/11

12:07 am-11:28 am

1 stop8h 21m

Boston Logan Intl

Wed 3/18

5:31 pm-12:24 am

1 stop9h 53m

$290

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 3/11

12:07 am-10:46 am

1 stop7h 39m

Boston Logan Intl

Wed 3/18

4:40 pm-12:24 am

1 stop10h 44m

$291

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 5/19

4:53 pm-5:49 am

1 stop9h 56m

Boston Logan Intl

Thu 5/28

8:05 am-6:15 pm

1 stop13h 10m

$292

SeattleHartford

SEA - BDL

SEABDL

Seattle/Tacoma Intl

Wed 3/11

1:30 pm-11:12 pm

1 stop6h 42m

Hartford Bradley Intl

Tue 3/31

4:54 pm-10:15 pm

1 stop8h 21m

$385

SeattleWest Tisbury

SEA - MVY

SEAMVY

Seattle/Tacoma Intl

Wed 7/1

11:53 pm-2:19 pm

2 stops11h 26m

West Tisbury Martha's Vineyard

Mon 7/6

3:10 pm-10:16 pm

1 stop10h 06m

$862

SeattleWest Tisbury

SEA - MVY

SEAMVY

Seattle/Tacoma Intl

Thu 6/25

11:59 pm-10:38 am

1 stop7h 39m

West Tisbury Martha's Vineyard

Sun 6/28

11:25 am-8:53 pm

1 stop12h 28m

$919

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Massachusetts from

How to get the cheapest flight ticket from Seattle to Massachusetts

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Massachusetts?

In general, March is the cheapest month to fly from Seattle to Massachusetts. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $287. If you aren’t able to travel to Massachusetts during the month of March, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $307.

What is the cheapest day to depart on your flight to Massachusetts?

According to our data, Wednesday is the cheapest day to fly to Massachusetts from Seattle. The lowest ticket price found for a Wednesday departure recently was $358. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Monday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $433.

What is the cheapest time of day to depart on your flight to Massachusetts?

Our data shows that the cheapest Seattle to Massachusetts flights are usually those with departure times at noon. Our users have found flights to Massachusetts at noon for as low as $232. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $428 on average. Flights to Massachusetts from Seattle in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Seattle/Tacoma Intl to Massachusetts flight route?

Fly from Seattle/Tacoma Intl to Boston Logan Intl for the best Seattle/Tacoma Intl - Massachusetts flight prices

How far in advance should I book a flight to Massachusetts?

You are more likely to see cheaper flights to Massachusetts from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Massachusetts for around $369 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Massachusetts from Seattle for as low as $308 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Massachusetts flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Massachusetts flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Seattle to Massachusetts flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Massachusetts

Best Price Found

$203

Fastest flight time

5h 17m

Direct flights

Every day

Airports in Massachusetts

140 airports
The best one-way flight to Massachusetts from Seattle in the past 72 hours is $203. The best round-trip flight deal from Seattle to Massachusetts found on momondo in the last 72 hours is $329.
The fastest flight from Seattle to Massachusetts takes 5h 17m
Direct flights go from Seattle to Massachusetts every day.
There are 140 airports in Massachusetts. From Seattle there are direct flights to Boston Logan Intl (BOS).
Search flight deals

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Massachusetts?

    Prices for flights from Seattle/Tacoma Intl Airport to Massachusetts are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Massachusetts?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Massachusetts?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Massachusetts.

  • What documentation or ID do you need to fly to Massachusetts?

    The necessary travel and health documents for your Massachusetts trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Massachusetts?

Best airlines flying from Seattle to Massachusetts

Compare and see reviews for airlines that fly from Seattle to Massachusetts with momondo
Airline
Rating
Free Cancellation
Price
Hawaiian AirlinesPriceFrom $118Free CancellationRating
7.8
2,831 reviews
Search Hawaiian Airlines flights
JetBluePriceFrom $123Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
DeltaPriceFrom $142Free CancellationRating
7.9
8,149 reviews
Search Delta flights
United AirlinesPriceFrom $178Free CancellationRating
7.4
9,237 reviews
Search United Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
11,234 reviews
Search American Airlines flights
Sun Country AirPriceFrom $223Free CancellationRating
6.9
341 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $237Free CancellationRating
8.0
11,838 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $281Free CancellationRating
8.0
4,275 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Massachusetts?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Massachusetts. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to Massachusetts with flexible booking policies on momondo?

Flights from Seattle to Massachusetts with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Massachusetts?

momondo provides multiple filters to help you find the best flight to Massachusetts from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to Massachusetts right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Massachusetts, momondo offers a useful price alert feature which will track prices for flights to Massachusetts from Seattle and alert you when they change.

An easier way to manage your Massachusetts trip

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