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>

$112 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

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

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

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, Dec 5 - Mon, Dec 8

6:59 pm - 10:30 pmBOS-SEA

6h 31mnonstop

11:10 pm - 7:29 amSEA-BOS

5h 19mnonstop

$235Alaska Airlines

Find Deal

Mon, Nov 17 - Tue, Nov 18

4:15 pm - 10:28 pmBOS-SEA

9h 13m1 stop

5:30 am - 5:06 pmSEA-BOS

8h 36m1 stop

$242United Airlines

Find Deal

Tue, Dec 16 - Wed, Jan 7

5:30 am - 1:25 pmBOS-SEA

10h 55m1 stop

6:05 am - 8:50 pmSEA-BOS

11h 45m2 stops

$282Southwest

Find Deal

Thu, Dec 4 - Wed, Dec 10

5:00 pm - 10:55 pmBOS-SEA

8h 55m1 stop

6:35 am - 4:45 pmSEA-BOS

7h 10m1 stop

$284Southwest

Find Deal

Fri, Dec 5 - Mon, Dec 8

11:59 am - 11:53 amBDL-SEA

26h 54m2 stops

5:21 pm - 7:57 pmSEA-BDL

23h 36m1 stop

$288Multiple Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 10

6:59 pm - 10:30 pmBOS-SEA

6h 31mnonstop

11:10 pm - 7:29 amSEA-BOS

5h 19mnonstop

$303Hawaiian Airlines

Find Deal

Sat, Jan 17 - Wed, Jan 21

9:51 am - 9:50 pmBOS-SEA

14h 59m1 stop

8:04 am - 8:45 pmSEA-BOS

9h 41m1 stop

$305American Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 10

7:00 am - 10:35 amBOS-SEA

6h 35mnonstop

3:38 pm - 11:59 pmSEA-BOS

5h 21mnonstop

$310Hawaiian Airlines

Find Deal

Wed, Dec 17 - Sat, Jan 24

6:10 am - 2:05 pmBOS-SEA

10h 55m1 stop

8:04 am - 10:31 pmSEA-BOS

11h 27m1 stop

$315American Airlines

Find Deal

Wed, Dec 17 - Wed, Jan 7

11:51 am - 4:54 pmBOS-SEA

8h 03m1 stop

7:55 am - 4:20 pmSEA-BOS

5h 25mnonstop

$340Multiple Airlines

Find Deal

Cheapest round-trip

$235

Overall average: $406

Alaska Airlines

Fri 12/5Mon 12/8

BOS - SEA • Non-stop

Cheapest one-way

$112

Typical prices: $218-$472

Multiple Airlines

Sat 12/6

BOS - SEA • 2 stops

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!

Useful Info

Low season	January
High season	July
Cheapest flight	$112

Best time to beat the crowds with an average 15% drop in price.

Most popular time to fly with an average 15% increase in price.

Flight from Boston to Seattle

Verified travelerFlew with Alaska AirlinesBOS-SEAOct 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 AirlinesBOS-SEAMay 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

Westport

Mukilteo

Lakewood

Lacey

Aberdeen

Poulsbo

Edmonds

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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

SEA

$112 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

Everything you should know

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