Flights from Boston to Seattle

Cheapest flights from Boston

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 9 - Sat, Sep 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$197 Roundtrip, found 20 hours ago

$197

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Tue, Sep 9 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $197 found 20 hours ago

Tue, Sep 9 - Wed, Sep 17

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$197 Roundtrip, found 20 hours ago

$197

Roundtrip

found 20 hours ago

Select Delta flight, departing Tue, Sep 9 from Logan Intl. to Seattle - Tacoma Intl., returning Wed, Sep 17, priced at $197 found 20 hours ago

Thu, Sep 11 - Wed, Sep 17

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$197 Roundtrip, found 20 hours ago

$197

Roundtrip

found 20 hours ago

Select JetBlue Airways flight, departing Thu, Sep 11 from Logan Intl. to Seattle - Tacoma Intl., returning Wed, Sep 17, priced at $197 found 20 hours ago

Tue, Sep 9 - Thu, Sep 18

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$217 Roundtrip, found 20 hours ago

$217

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Tue, Sep 9 from Logan Intl. to Seattle - Tacoma Intl., returning Thu, Sep 18, priced at $217 found 20 hours ago

Tue, Sep 9 - Fri, Sep 19

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$227 Roundtrip, found 20 hours ago

$227

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Tue, Sep 9 from Logan Intl. to Seattle - Tacoma Intl., returning Fri, Sep 19, priced at $227 found 20 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$237 Roundtrip, found 20 hours ago

$237

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $237 found 20 hours ago

Wed, Jul 9 - Mon, Jul 14

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$237 Roundtrip, found 1 day ago

$237

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Jul 9 from Logan Intl. to Seattle - Tacoma Intl., returning Mon, Jul 14, priced at $237 found 1 day ago

Fri, Sep 12 - Sat, Sep 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$247 Roundtrip, found 20 hours ago

$247

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $247 found 20 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$247 Roundtrip, found 20 hours ago

$247

Roundtrip

found 20 hours ago

Select American Airlines flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $247 found 20 hours ago

Fri, Sep 12 - Thu, Sep 18

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$247 Roundtrip, found 20 hours ago

$247

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Thu, Sep 18, priced at $247 found 20 hours ago

Thu, Sep 11 - Sun, Sep 21

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$252 Roundtrip, found 20 hours ago

$252

Roundtrip

found 20 hours ago

Select Hawaiian Airlines flight, departing Thu, Sep 11 from Logan Intl. to Seattle - Tacoma Intl., returning Sun, Sep 21, priced at $252 found 20 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$257 Roundtrip, found 20 hours ago

$257

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $257 found 20 hours ago

Fri, Sep 12 - Fri, Sep 19

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$257 Roundtrip, found 20 hours ago

$257

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Fri, Sep 19, priced at $257 found 20 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$264 Roundtrip, found 20 hours ago

$264

Roundtrip

found 20 hours ago

Select United flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $264 found 20 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$267 Roundtrip, found 20 hours ago

$267

Roundtrip

found 20 hours ago

Select United flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $267 found 20 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$267 Roundtrip, found 20 hours ago

$267

Roundtrip

found 20 hours ago

Select American Airlines flight, departing Fri, Sep 12 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $267 found 20 hours ago

Thu, Jul 10 - Mon, Jul 14

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$272 Roundtrip, found 1 day ago

$272

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Thu, Jul 10 from Logan Intl. to Seattle - Tacoma Intl., returning Mon, Jul 14, priced at $272 found 1 day ago

Thu, Jun 12 - Fri, Jun 20

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$419 Roundtrip, found 20 hours ago

$419

Roundtrip

found 20 hours ago

Select Spirit Airlines flight, departing Thu, Jun 12 from Logan Intl. to Seattle - Tacoma Intl., returning Fri, Jun 20, priced at $419 found 20 hours ago

Thu, Jul 10 - Sun, Jul 13

BOS

Logan Intl.

SEA

Seattle - Tacoma Intl.

$508 Roundtrip, found 1 day ago

$508

Roundtrip

found 1 day ago

Select Sun Country Airlines flight, departing Thu, Jul 10 from Logan Intl. to Seattle - Tacoma Intl., returning Sun, Jul 13, priced at $508 found 1 day ago

Thu, Jun 12 - Fri, Jun 20

BOS

Logan Intl.

PAE

Seattle Paine Field Intl. Airport

$638 Roundtrip, found 20 hours ago

$638

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Thu, Jun 12 from Logan Intl. to Seattle Paine Field Intl. Airport, returning Fri, Jun 20, priced at $638 found 20 hours ago