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Cheap flights from Massachusetts to Seattle from $111

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to Seattle departing on 10/23. 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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Cheap round-trip flights

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Alaska Airlines Logo
6:23 pm - 9:51 pmBOS-SEA
6h 28mnonstop
Alaska Airlines Logo
3:55 pm - 12:15 amSEA-BOS
5h 20mnonstop
$214Alaska Airlines
Find Deal
Wed, Nov 19 - Sun, Nov 23
Alaska Airlines Logo
7:00 am - 10:35 amBOS-SEA
6h 35mnonstop
Alaska Airlines Logo
3:59 pm - 12:20 amSEA-BOS
5h 21mnonstop
$217Alaska Airlines
Find Deal
Sat, Nov 1 - Tue, Nov 11
Delta Logo
7:15 am - 10:45 amBOS-SEA
6h 30mnonstop
Delta Logo
10:05 pm - 6:35 amSEA-BOS
5h 30mnonstop
$231Delta
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Thu, Nov 20 - Sun, Nov 23
JetBlue Logo
8:20 am - 11:59 amBOS-SEA
6h 39mnonstop
JetBlue Logo
1:10 pm - 9:46 pmSEA-BOS
5h 36mnonstop
$239JetBlue
Find Deal
Wed, Oct 22 - Thu, Oct 23
Delta Logo
6:55 pm - 10:14 pmBOS-SEA
6h 19mnonstop
Delta Logo
10:00 pm - 6:32 amSEA-BOS
5h 32mnonstop
$242Delta
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Fri, Dec 12 - Wed, Jan 7
American Airlines Logo
8:00 am - 1:46 pmBOS-SEA
8h 46m1 stop
American Airlines Logo
10:39 am - 9:17 pmSEA-BOS
7h 38m1 stop
$246American Airlines
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Sat, Oct 25 - Sat, Nov 1
American Airlines Logo
3:35 pm - 10:20 pmBOS-SEA
9h 45m1 stop
American Airlines Logo
11:20 pm - 9:33 amSEA-BOS
7h 13m1 stop
$249American Airlines
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Mon, Nov 17 - Sun, Nov 23
United Airlines Logo
4:50 pm - 11:10 pmBOS-SEA
9h 20m1 stop
United Airlines Logo
6:20 am - 5:22 pmSEA-BOS
8h 02m1 stop
$252United Airlines
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Fri, Nov 14 - Mon, Nov 17
JetBlue Logo
8:20 am - 11:59 amBOS-SEA
6h 39mnonstop
JetBlue Logo
1:10 pm - 9:46 pmSEA-BOS
5h 36mnonstop
$254JetBlue
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Tue, Oct 21 - Fri, Oct 24
United Airlines Logo
9:30 am - 4:01 pmBOS-SEA
9h 31m1 stop
United Airlines Logo
9:25 am - 9:42 pmSEA-BOS
9h 17m1 stop
$262United Airlines
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Thu, Jan 29 - Tue, Feb 3

JetBlue flights from Massachusetts to Seattle

Our best JetBlue deals on Massachusetts to Seattle flight tickets
JetBlue
Oct 22
BOS8:20 amBoston Logan Intl
6h 39m
SEA11:59 amSeattle/Tacoma Intl
Oct 23
SEA1:10 pmSeattle/Tacoma Intl
5h 36m
BOS9:46 pmBoston Logan Intl
$239
Find similar
JetBlue
Oct 21
BOS8:20 amBoston Logan Intl
6h 39m
SEA11:59 amSeattle/Tacoma Intl
Oct 24
SEA1:10 pmSeattle/Tacoma Intl
5h 36m
BOS9:46 pmBoston Logan Intl
$254
Find similar
JetBlue
Oct 21
BOS2:45 pmBoston Logan Intl
10h 36m
1 stop
SEA10:21 pmSeattle/Tacoma Intl
Oct 24
SEA1:10 pmSeattle/Tacoma Intl
5h 36m
BOS9:46 pmBoston Logan Intl
$255
Find similar

Delta flights from Massachusetts to Seattle

Our best Delta deals on Massachusetts to Seattle flight tickets
Delta
Nov 20
BOS7:15 amBoston Logan Intl
6h 30m
SEA10:45 amSeattle/Tacoma Intl
Nov 23
SEA10:05 pmSeattle/Tacoma Intl
5h 30m
BOS6:35 amBoston Logan Intl
$231
Find similar
Delta
Dec 12
BOS6:55 pmBoston Logan Intl
6h 19m
SEA10:14 pmSeattle/Tacoma Intl
Jan 7
SEA10:00 pmSeattle/Tacoma Intl
5h 32m
BOS6:32 amBoston Logan Intl
$242
Find similar
Delta
Nov 17
BOS7:00 pmBoston Logan Intl
6h 29m
SEA10:29 pmSeattle/Tacoma Intl
Nov 22
SEA10:05 pmSeattle/Tacoma Intl
5h 30m
BOS6:35 amBoston Logan Intl
$274
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Massachusetts to Seattle 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 October 9, 2025.
Use the filters below to find and compare flights from Massachusetts to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 11/19

6:23 pm-9:51 pm

Nonstop6h 28m

Seattle/Tacoma Intl

Sun 11/23

3:55 pm-12:15 am

Nonstop5h 20m

$214

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Sat 11/1

7:00 am-10:35 am

Nonstop6h 35m

Seattle/Tacoma Intl

Tue 11/11

3:59 pm-12:20 am

Nonstop5h 21m

$217

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Thu 11/20

7:15 am-10:45 am

Nonstop6h 30m

Seattle/Tacoma Intl

Sun 11/23

10:05 pm-6:35 am

Nonstop5h 30m

$231

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 10/22

8:20 am-11:59 am

Nonstop6h 39m

Seattle/Tacoma Intl

Thu 10/23

1:10 pm-9:46 pm

Nonstop5h 36m

$239

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Fri 12/12

6:55 pm-10:14 pm

Nonstop6h 19m

Seattle/Tacoma Intl

Wed 1/7

10:00 pm-6:32 am

Nonstop5h 32m

$242

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Sat 10/25

8:00 am-1:46 pm

1 stop8h 46m

Seattle/Tacoma Intl

Sat 11/1

10:39 am-9:17 pm

1 stop7h 38m

$246

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 11/17

3:35 pm-10:20 pm

1 stop9h 45m

Seattle/Tacoma Intl

Sun 11/23

11:20 pm-9:33 am

1 stop7h 13m

$249

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Fri 11/14

4:50 pm-11:10 pm

1 stop9h 20m

Seattle/Tacoma Intl

Mon 11/17

6:20 am-5:22 pm

1 stop8h 02m

$252

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 10/21

8:20 am-11:59 am

Nonstop6h 39m

Seattle/Tacoma Intl

Fri 10/24

1:10 pm-9:46 pm

Nonstop5h 36m

$254

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Thu 1/29

9:30 am-4:01 pm

1 stop9h 31m

Seattle/Tacoma Intl

Tue 2/3

9:25 am-9:42 pm

1 stop9h 17m

$262

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 Seattle from

How to get the cheapest flight ticket from Massachusetts to Seattle

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 Seattle?

In general, January is the cheapest month to fly from Massachusetts to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $235. If you don’t want to visit Seattle in January, then you should wait until March to fly from Massachusetts, when ticket prices are also cheap, with an average price of $279.

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

On average, the least expensive day to fly to Seattle from Massachusetts is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $389. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Massachusetts because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $511.

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

Flying to Seattle from Massachusetts in the evening is the least expensive time of day to depart. momondo users have found prices as low as $313 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $455. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

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

You are more likely to see cheaper flights to Seattle from Massachusetts when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $339 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Massachusetts for as low as $297 on momondo.

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

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

Can stopping save me money on Massachusetts to Seattle flights?

No. A direct flight is the cheapest option for a flight between Massachusetts to Seattle.

Cheap Massachusetts to Seattle flight deals and tips

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

Best Price Found

$185

Fastest flight time

6h 16m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Massachusetts in the past 72 hours is $185. The best round-trip flight deal from Massachusetts to Seattle found on momondo in the last 72 hours is $304.
The fastest flight from Massachusetts to Seattle takes 6h 16m
Direct flights go from Massachusetts to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Massachusetts to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport 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 Massachusetts to Seattle?

Best airlines flying from Massachusetts to Seattle

Compare and see reviews for airlines that fly from Massachusetts to Seattle with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $133Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
Hawaiian AirlinesPriceFrom $139Free CancellationRating
7.8
2,775 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $151Free CancellationRating
7.9
7,971 reviews
Search Delta flights
Sun Country AirPriceFrom $167Free CancellationRating
6.9
335 reviews
Search Sun Country Air flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $217Free CancellationRating
8.0
11,049 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
8,966 reviews
Search United Airlines flights
SouthwestPriceFrom $259Free CancellationRating
8.0
4,236 reviews
Search Southwest flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Tukwila
Kirkland
Fife
Centralia
Lakewood
Shoreline
Cle Elum
Redmond
Westport

Why use momondo?

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

Finding the right flight to Seattle from Massachusetts is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

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

All flight searches from Massachusetts to Seattle on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Massachusetts to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Massachusetts to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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