How does KAYAK find such low prices on flights from Massachusetts to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Massachusetts to Seattle. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Massachusetts to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Massachusetts is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Massachusetts to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Massachusetts with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$140 CHEAP FLIGHTS from Massachusetts to Seattle

SEA

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$292

Overall average: $279

Alaska Airlines

Fri 3/6Tue 3/10

BOS - SEA • 1 stop

Cheapest non-stop

$292

Typical prices: $243-$404

Delta

Wed 2/11Thu 2/19

BOS - SEA • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Seattle!

Flight Deals

Cheap Flights from Massachusetts to Seattle

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Massachusetts to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Massachusetts to Seattle

Fri, Mar 6 - Tue, Mar 10

5:44 pm - 9:28 am

BOS

SEA

18h 44m

1 stop

10:40 pm - 6:54 am

SEA

BOS

5h 14mnonstop

$292Alaska Airlines

Fri, Feb 20 - Tue, Feb 24

8:59 pm - 10:53 am

BOS

SEA

16h 54m

1 stop

7:30 am - 3:59 pm

SEA

BOS

5h 29mnonstop

$295Delta

Wed, Feb 18 - Tue, Feb 24

2:40 pm - 10:30 pm

BOS

SEA

10h 50m

2 stops

9:55 am - 10:30 pm

SEA

BOS

9h 35m

1 stop

$297Southwest

Sat, Feb 7 - Thu, Feb 12

12:11 pm - 7:18 pm

BOS

SEA

10h 07m

1 stop

6:00 am - 6:02 pm

SEA

BOS

9h 02m

1 stop

$302American Airlines

Wed, Feb 25 - Mon, Mar 2

5:30 am - 1:15 pm

BOS

SEA

10h 45m

1 stop

6:35 am - 10:55 pm

SEA

BOS

13h 20m

2 stops

$303Southwest

Wed, Jun 3 - Fri, Jun 12

6:00 am - 10:59 am

BOS

SEA

7h 59m

1 stop

2:15 pm - 1:09 am

SEA

BOS

7h 54m

1 stop

$304United Airlines

Sun, Jul 5 - Wed, Jul 15

11:46 am - 10:46 pm

BDL

SEA

14h 00m

1 stop

6:09 pm - 12:41 pm

SEA

BDL

15h 32m

1 stop

$337Sun Country Air

Fri, Jul 3 - Wed, Jul 15

11:52 am - 10:46 pm

BDL

SEA

13h 54m

1 stop

6:09 pm - 12:41 pm

SEA

BDL

15h 32m

1 stop

$340Sun Country Air

Wed, Feb 18 - Tue, Feb 24

4:26 pm - 9:57 pm

ALB

SEA

8h 31m

1 stop

10:57 pm - 11:07 am

SEA

ALB

9h 10m

1 stop

$359American Airlines

Sat, Feb 14 - Wed, Feb 18

4:43 pm - 10:43 pm

BDL

SEA

9h 00m

1 stop

7:29 pm - 9:34 am

SEA

BDL

11h 05m

2 stops

$370United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$140

Best time to beat the crowds with an average 14% drop in price.

Most popular time to fly with an average 16% increase in price.

Flight from Hartford to Seattle

Verified travelerFlew with Alaska Airlines

BOS

SEA

Oct 2024

Flying Alaska Airlines from Boston to Seattle was an example of getting exactly what you expect. A no-frills basic experience, but one where the important things were accomplished, timely departure, on-time arrival, no drama, no glitches, completely as anticipated. I paid a little extra for one offered perk (seat selection), and I'm glad I did because my early morning flight was full. Next time, I'll likely pre-order a snack, since they looked good, were served promptly, and are priced right.

CarlaFlew with Alaska Airlines

BOS

SEA

May 2024

It’s a good choice. Seattle airport is huge and confusing if you are changing planes. Have plenty of time to switch.

How does KAYAK find such low prices on flights from Massachusetts to Seattle?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Massachusetts to Seattle.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Massachusetts to Seattle?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Massachusetts is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Massachusetts to Seattle?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Massachusetts with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts to Seattle?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Lynnwood

Centralia

Fife

Lakewood

Westport

Mukilteo

Lacey

Edmonds

Poulsbo

Aberdeen

Woodinville

Shoreline

DuPont

Monroe

Castle Rock

Edgewood

Everything you need to know for your flight to Seattle

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Seattle

Seattle (SEA)

SEA

$140 Find Cheap Flights from Massachusetts to Seattle

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

Everything you should know

Cheap Flights from Massachusetts to Seattle

Recent round-trip flight deals from Massachusetts to Seattle

Recent one-way flight deals from Massachusetts to Seattle

Recent last minute flight deals from Massachusetts to Seattle

Recent direct flight deals from Massachusetts to Seattle

Good to know

Flights from Massachusetts to Seattle: the best tips from KAYAK users

FAQs for booking flights from Massachusetts to Seattle

How does KAYAK find such low prices on flights from Massachusetts to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Massachusetts to Seattle.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Massachusetts to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Massachusetts is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Massachusetts to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Massachusetts with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Seattle?

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Cabin class types available on flights to Massachusetts

Complete your trip to Seattle with a hotel stay or car rental

Find direct flights for Seattle

Flights to other popular destinations

Flights from domestic origins to Seattle

Choose which airport to fly into in Seattle

Find deals for your return flight