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Cheap flights from Seattle to Massachusetts from $100

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 1/9. 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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Find the cheapest flights from Seattle to Massachusetts

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:30 pm - 9:30 amSEA-BOS
7h 00m1 stop
United Airlines Logo
11:00 am - 6:25 pmBOS-SEA
10h 25m1 stop
$217United Airlines
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Sat, Nov 15 - Tue, Nov 18
United Airlines Logo
11:30 pm - 9:30 amSEA-BOS
7h 00m1 stop
United Airlines Logo
11:00 am - 6:25 pmBOS-SEA
10h 25m1 stop
$242United Airlines
Find Deal
Sat, Nov 15 - Wed, Nov 19
Alaska Airlines Logo
11:10 pm - 7:29 amSEA-BOS
5h 19mnonstop
Alaska Airlines Logo
6:59 pm - 10:30 pmBOS-SEA
6h 31mnonstop
$276Alaska Airlines
Find Deal
Thu, Dec 4 - Wed, Dec 10
American Airlines Logo
8:04 am - 10:31 pmSEA-BOS
11h 27m1 stop
American Airlines Logo
12:55 pm - 10:20 pmBOS-SEA
12h 25m1 stop
$293American Airlines
Find Deal
Sat, Jan 17 - Mon, Jan 19
Hawaiian Airlines Logo
11:10 pm - 7:29 amSEA-BOS
5h 19mnonstop
Hawaiian Airlines Logo
7:00 am - 10:35 amBOS-SEA
6h 35mnonstop
$297Hawaiian Airlines
Find Deal
Thu, Dec 4 - Wed, Dec 10
Alaska Airlines Logo
11:10 pm - 7:29 amSEA-BOS
5h 19mnonstop
Alaska Airlines Logo
6:52 pm - 9:43 pmBOS-SEA
29h 51m1 stop
$300Alaska Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Hawaiian Airlines Logo
10:50 pm - 7:16 amSEA-BOS
5h 26mnonstop
Hawaiian Airlines Logo
10:00 am - 1:23 pmBOS-SEA
6h 23mnonstop
$301Hawaiian Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
Delta Logo
10:25 pm - 6:55 amSEA-BOS
5h 30mnonstop
Delta Logo
5:30 pm - 8:48 pmBOS-SEA
6h 18mnonstop
$306Delta
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Thu, Dec 4 - Wed, Dec 10
Delta Logo
3:40 pm - 11:58 pmSEA-BOS
5h 18mnonstop
Delta Logo
7:15 am - 10:45 amBOS-SEA
6h 30mnonstop
$307Delta
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Thu, Dec 4 - Wed, Dec 10
American Airlines Logo
12:31 am - 1:35 pmSEA-BOS
10h 04m1 stop
American Airlines Logo
1:45 pm - 11:25 pmBOS-SEA
12h 40m1 stop
$325American Airlines
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Sat, Dec 6 - Wed, Dec 10

United Airlines flights from Seattle to Massachusetts

Our best United Airlines deals on Seattle to Massachusetts flight tickets
United Airlines
Nov 15
SEA11:30 pmSeattle/Tacoma Intl
7h 00m
1 stop
BOS9:30 amBoston Logan Intl
Nov 18
BOS11:00 amBoston Logan Intl
10h 25m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$217
Find similar
United Airlines
Nov 15
SEA11:30 pmSeattle/Tacoma Intl
7h 00m
1 stop
BOS9:30 amBoston Logan Intl
Nov 19
BOS11:00 amBoston Logan Intl
10h 25m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$242
Find similar
United Airlines
Dec 5
SEA5:00 amSeattle/Tacoma Intl
7h 42m
1 stop
BOS3:42 pmBoston Logan Intl
Dec 8
BOS4:20 pmBoston Logan Intl
9h 18m
1 stop
SEA10:38 pmSeattle/Tacoma Intl
$262
Find similar

Delta flights from Seattle to Massachusetts

Our best Delta deals on Seattle to Massachusetts flight tickets
Delta
Dec 4
SEA10:25 pmSeattle/Tacoma Intl
5h 30m
BOS6:55 amBoston Logan Intl
Dec 10
BOS5:30 pmBoston Logan Intl
6h 18m
SEA8:48 pmSeattle/Tacoma Intl
$306
Find similar
Delta
Dec 4
SEA3:40 pmSeattle/Tacoma Intl
5h 18m
BOS11:58 pmBoston Logan Intl
Dec 10
BOS7:15 amBoston Logan Intl
6h 30m
SEA10:45 amSeattle/Tacoma Intl
$307
Find similar
Delta
Dec 3
SEA3:59 pmSeattle/Tacoma Intl
13h 58m
1 stop
BOS8:57 amBoston Logan Intl
Dec 10
BOS7:15 amBoston Logan Intl
6h 30m
SEA10:45 amSeattle/Tacoma Intl
$316
Find similar

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 November 3, 2025.
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

Sat 11/15

11:30 pm-9:30 am

1 stop7h 00m

Boston Logan Intl

Tue 11/18

11:00 am-6:25 pm

1 stop10h 25m

$217

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 11/15

11:30 pm-9:30 am

1 stop7h 00m

Boston Logan Intl

Wed 11/19

11:00 am-6:25 pm

1 stop10h 25m

$242

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 12/4

11:10 pm-7:29 am

Nonstop5h 19m

Boston Logan Intl

Wed 12/10

6:59 pm-10:30 pm

Nonstop6h 31m

$276

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 1/17

8:04 am-10:31 pm

1 stop11h 27m

Boston Logan Intl

Mon 1/19

12:55 pm-10:20 pm

1 stop12h 25m

$293

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 12/4

11:10 pm-7:29 am

Nonstop5h 19m

Boston Logan Intl

Wed 12/10

7:00 am-10:35 am

Nonstop6h 35m

$297

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 12/5

11:10 pm-7:29 am

Nonstop5h 19m

Boston Logan Intl

Mon 12/8

6:52 pm-9:43 pm

1 stop29h 51m

$300

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 3/10

10:50 pm-7:16 am

Nonstop5h 26m

Boston Logan Intl

Wed 3/11

10:00 am-1:23 pm

Nonstop6h 23m

$301

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 12/4

10:25 pm-6:55 am

Nonstop5h 30m

Boston Logan Intl

Wed 12/10

5:30 pm-8:48 pm

Nonstop6h 18m

$306

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 12/4

3:40 pm-11:58 pm

Nonstop5h 18m

Boston Logan Intl

Wed 12/10

7:15 am-10:45 am

Nonstop6h 30m

$307

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 12/6

12:31 am-1:35 pm

1 stop10h 04m

Boston Logan Intl

Wed 12/10

1:45 pm-11:25 pm

1 stop12h 40m

$325

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, January 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 $217. If you aren’t able to travel to Massachusetts during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $272.

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 $340. 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, Sunday 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 $412.

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 $303. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $413 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 $348 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 $301 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

$181

Fastest flight time

5h 15m

Direct flights

Every day

Airports in Massachusetts

1 airport
The best one-way flight to Massachusetts from Seattle in the past 72 hours is $181. The best round-trip flight deal from Seattle to Massachusetts found on momondo in the last 72 hours is $306.
The fastest flight from Seattle to Massachusetts takes 5h 15m
Direct flights go from Seattle to Massachusetts every day.
There is 1 airport near Massachusetts: 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
2,799 reviews
Search Hawaiian Airlines flights
JetBluePriceFrom $138Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
DeltaPriceFrom $149Free CancellationRating
7.9
8,001 reviews
Search Delta flights
United AirlinesPriceFrom $178Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
11,034 reviews
Search American Airlines flights
Sun Country AirPriceFrom $216Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $228Free CancellationRating
8.0
11,234 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $236Free CancellationRating
8.0
4,238 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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