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>

$149 CHEAP FLIGHTS from Massachusetts to Seattle

SEA

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Cheap Flights from Massachusetts to Seattle

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

Wed, May 27 - Wed, May 27

6:00 am - 12:34 pm

BOS

SEA

9h 34m

1 stop

10:40 pm - 9:39 am

SEA

BOS

7h 59m

1 stop

$282United Airlines

Wed, Jun 3 - Tue, Jun 9

5:57 pm - 12:59 am

BOS

SEA

10h 02m

1 stop

11:58 pm - 10:26 am

SEA

BOS

7h 28m

1 stop

$287American Airlines

Tue, Jun 2 - Tue, Jun 9

5:04 pm - 10:58 pm

BOS

SEA

8h 54m

1 stop

11:58 pm - 10:26 am

SEA

BOS

7h 28m

1 stop

$288American Airlines

Tue, Jun 2 - Tue, Jun 9

7:00 am - 10:17 am

BOS

SEA

6h 17mnonstop

11:09 pm - 7:40 am

SEA

BOS

5h 31mnonstop

$292Multiple Airlines

Sat, May 9 - Sat, May 16

5:20 pm - 8:33 pm

BOS

SEA

6h 13mnonstop

7:15 am - 3:55 pm

SEA

BOS

5h 40mnonstop

$297Delta

Thu, May 14 - Sat, May 23

7:00 am - 10:17 am

BOS

SEA

6h 17mnonstop

11:35 am - 8:14 pm

SEA

BOS

5h 39mnonstop

$298JetBlue

Thu, May 14 - Sat, May 23

7:00 am - 10:17 am

BOS

SEA

6h 17mnonstop

11:35 am - 8:14 pm

SEA

BOS

5h 39mnonstop

$300JetBlue

Wed, May 27 - Wed, Jun 3

7:11 pm - 10:27 pm

BOS

SEA

6h 16mnonstop

3:02 pm - 5:44 am

SEA

BOS

11h 42m

1 stop

$302Alaska Airlines

Tue, May 26 - Sat, Jun 6

7:00 am - 10:17 am

BOS

SEA

6h 17mnonstop

8:45 am - 6:20 am

SEA

BOS

18h 35m

1 stop

$303Multiple Airlines

Thu, May 28 - Mon, Jun 1

5:06 pm - 10:48 pm

ALB

SEA

8h 42m

1 stop

12:30 pm - 11:18 pm

SEA

ALB

7h 48m

1 stop

$399Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$149

Best time to beat the crowds with an average 18% drop in price.

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

Flight from Boston to Seattle

Verified travelerFlew with Alaska Airlines

BOS

SEA

Mar 2026

Other smaller airports in the area may be more convenient, but the nonstop from Logan and the red-eye from Seattle suit me better than switching to connecting flights.

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

Mukilteo

Westport

Lacey

Aberdeen

Edmonds

Woodinville

Poulsbo

DuPont

Shoreline

Monroe

Castle Rock

Edgewood

Everything you need to know for your flight to Seattle

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Return flight deals

Information on the airport you'll fly into in Seattle

Seattle (SEA)

SEA

$149 Find Cheap Flights from Massachusetts to Seattle

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

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