background

Flight Deals from Boston to Seattle from $136

Bundle + Save

Bundle + Save

Top flight deals from leading airlines:

DL LogoAS LogoUA LogoB6 LogoQR LogoSQ LogoNH Logo

... and +100s more

Incredible Deals

Save up to 50% on select flights with Priceline

Bundle & Save

Save an average of $240 per person when bundling your flight and hotel together with Priceline

Best Price Guarantee

If a VIP member finds a better price elsewhere, we'll refund up to 200% of the difference

Help 24/7

We’re always here for you - reach us 24 hours a day, 7 days a week

Stops

  • Up to nonstop
    $365
  • Up to 1 stop
    $370

Airlines

  • Alaska Airlines
    $414
  • American Airlines
    $370
  • CitizenPlane
    $446
  • Delta Air Lines
    $386
  • JetBlue
    $365
  • United Airlines
    $441

Cabin Class

  • Economy
    $365

Layover Airports

  • Charlotte Douglas International Airport
    $569
  • Chicago O Hare Airport
    $370
  • Philadelphia International Airport
    $370
  • San Diego International Airport
    $414
  • Washington Dulles Airport
    $441

Best Price. GUARANTEED.

Exclusively for Priceline Members
Tired of searching? Book now!
We'll refund the difference if you find a lower price.

JetBlue Logo
JetBlue

07/03/26

BOS
6h 24m
Direct

07/03/26

SEA
JetBlue Logo
JetBlue

07/07/26

SEA
5h 18m
Direct

07/08/26

BOS
$365
American Airlines Logo
American Airlines

07/03/26

BOS
9h 33m
ORD

07/04/26

SEA
American Airlines Logo
American Airlines

07/06/26

SEA
10h 28m
PHL

07/07/26

BOS
$370
Delta Air Lines Logo
Delta Air Lines

07/03/26

BOS
6h 20m
Direct

07/03/26

SEA
Delta Air Lines Logo
Delta Air Lines

07/07/26

SEA
5h 31m
Direct

07/07/26

BOS
$386
Bundle + Save
Book a flight & hotel together for extra savings.
On average save $240 per traveler
Alaska Airlines Logo
Alaska Airlines

07/03/26

BOS
10h 8m
SAN

07/03/26

SEA
Alaska Airlines Logo
Alaska Airlines

07/07/26

SEA
5h 28m
Direct

07/07/26

BOS
$414
United Airlines Logo
United Airlines

07/03/26

BOS
9h 31m
IAD

07/03/26

SEA
United Airlines Logo
United Airlines

07/07/26

SEA
7h 31m
ORD

07/07/26

BOS
$441
Delta Air Lines Logo
Delta Air Lines

07/03/26

BOS
6h 20m
Direct

07/03/26

SEA
JetBlue Logo
JetBlue

07/06/26

SEA
5h 18m
Direct

07/07/26

BOS
$446
American Airlines Logo
American Airlines

08/12/26

BOS
8h 50m
PHL

08/12/26

SEA
American Airlines Logo
American Airlines

08/23/26

SEA
24h 47m
ORD

08/24/26

BOS
$535
American Airlines Logo
American Airlines

07/18/26

BOS
9h 21m
ORD

07/19/26

SEA
American Airlines Logo
American Airlines

07/22/26

SEA
9h 54m
CLT

07/22/26

BOS
$569
Alaska Airlines Logo
Alaska Airlines

07/18/26

BOS
6h 23m
Direct

07/18/26

SEA
American Airlines Logo
American Airlines

07/22/26

SEA
5h 23m
Direct

07/22/26

BOS
$837

Top Deals on flights from Boston to Seattle

Boston, US (BOS) - Seattle, US (SEA)

American Airlines Logo
American Airlines

Sep 5

BOS
10h 36m
PHL

Sep 5

SEA

as low as

$136

Boston, US (BOS) - Seattle, US (SEA)

JetBlue Logo
JetBlue

Sep 5

BOS
6h 25m
Direct

Sep 5

SEA

as low as

$165

Boston, US (BOS) - Seattle, US (SEA)

American Airlines Logo
American Airlines

Aug 21

BOS
12h 28m
DFW

Aug 21

SEA

as low as

$167

Boston, US (BOS) - Seattle, US (SEA)

United Airlines Logo
United Airlines

Aug 21

BOS
8h 42m
ORD

Aug 21

SEA

as low as

$183

Boston, US (BOS) - Seattle, US (SEA)

American Airlines Logo
American Airlines

Jul 18

BOS
9h 21m
ORD

Jul 19

SEA

as low as

$351

Good to Know

Essential information to help you plan your flight from Boston to Seattle

Cheapest Flight

$136

The lowest price we found in the last two weeks, departing Sep 5 and returning Sep 5

Airline AA1 stop ‧ 10h 36m ‧ economy

Fastest Flights

$386

The fastest flight that we found in the last two weeks, departing Jul 3 and returning Jul 7

Airline DL6h 20m ‧ economy

Cheapest Flight Round-trip

$365

Cheapest price found in the last 14 days, departing Jul 3 and returning Jul 8

Airline B66h 24m ‧ economy

Cheapest Flight One-way

$136

Cheapest price found in the last 14 days, departing Sep 5

Airline AA1 stop ‧ 10h 36m ‧ economy

Cheapest Layover airport

$136

The cheapest layover airport to Seattle is currently $136

Airline AA1 stop ‧ 10h 36m ‧ economy

Flights to Seattle