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>

$119 CHEAP FLIGHTS from Massachusetts to Seattle

SEA

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

...and more

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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

$247

Overall average: $311

United Airlines

Tue 11/18Sun 11/23

BOS - SEA • 1 stop

Cheapest non-stop

$287

Typical prices: $195-$315

Alaska Airlines

Sat 1/17Fri 1/23

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

Tue, Nov 18 - Sun, Nov 23

11:00 am - 6:25 pmBOS-SEA

10h 25m1 stop

11:51 pm - 10:39 amSEA-BOS

7h 48m1 stop

$247United Airlines

Find Deal

Wed, Nov 19 - Wed, Dec 10

11:00 am - 6:25 pmBOS-SEA

10h 25m1 stop

8:10 am - 6:48 pmSEA-BOS

7h 38m1 stop

$257United Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

4:24 pm - 9:56 amBOS-SEA

20h 32m2 stops

12:48 pm - 10:22 amSEA-BOS

18h 34m2 stops

$259Multiple Airlines

Find Deal

Sun, Dec 14 - Mon, Jan 5

2:03 pm - 11:53 amBDL-SEA

24h 50m2 stops

6:33 pm - 8:06 pmSEA-BDL

22h 33m1 stop

$268Multiple Airlines

Find Deal

Tue, Mar 10 - Wed, Mar 11

4:20 pm - 12:36 pmBOS-SEA

23h 16m1 stop

3:35 pm - 11:59 pmSEA-BOS

5h 24mnonstop

$277Alaska Airlines

Find Deal

Wed, Nov 19 - Sat, Dec 6

6:45 am - 6:40 pmBOS-SEA

14h 55m1 stop

6:00 am - 9:55 pmSEA-BOS

12h 55m2 stops

$280Southwest

Find Deal

Tue, Dec 16 - Wed, Jan 7

5:00 pm - 10:55 pmBOS-SEA

8h 55m1 stop

6:05 am - 8:50 pmSEA-BOS

11h 45m2 stops

$282Southwest

Find Deal

Fri, Jan 23 - Sat, Jan 31

12:55 pm - 10:20 pmBOS-SEA

12h 25m1 stop

8:04 am - 10:31 pmSEA-BOS

11h 27m1 stop

$283American Airlines

Find Deal

Sat, Jan 17 - Fri, Jan 23

7:00 am - 10:34 amBOS-SEA

6h 34mnonstop

7:55 am - 4:20 pmSEA-BOS

5h 25mnonstop

$287Alaska Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

1:45 pm - 11:25 pmBOS-SEA

12h 40m1 stop

10:59 pm - 9:29 amSEA-BOS

7h 30m1 stop

$290American Airlines

Find Deal

Useful Info

Low season	January
High season	July
Cheapest flight	$119

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

Most popular time to fly with an average 14% 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)

SEA

$119 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