Flights from Philadelphia to Seattle

Cheapest flights from Philadelphia

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 2 - Tue, Sep 23

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$277 Roundtrip, found 2 days ago

$277

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Tue, Sep 2 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $277 found 2 days ago

Wed, Aug 6 - Wed, Aug 20

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$295 Roundtrip, found 1 day ago

$295

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Aug 6 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Aug 20, priced at $295 found 1 day ago

Wed, Sep 3 - Wed, Sep 24

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$297 Roundtrip, found 2 days ago

$297

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Sep 3 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Sep 24, priced at $297 found 2 days ago

Thu, Sep 4 - Tue, Sep 23

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$297 Roundtrip, found 2 days ago

$297

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $297 found 2 days ago

Wed, Aug 6 - Wed, Aug 20

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$305 Roundtrip, found 1 day ago

$305

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Aug 6 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Aug 20, priced at $305 found 1 day ago

Thu, Sep 4 - Mon, Sep 22

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$305 Roundtrip, found 2 days ago

$305

Roundtrip

found 2 days ago

Select American Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $305 found 2 days ago

Thu, Sep 4 - Mon, Sep 22

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$307 Roundtrip, found 2 days ago

$307

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $307 found 2 days ago

Mon, Sep 1 - Tue, Sep 23

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$310 Roundtrip, found 2 days ago

$310

Roundtrip

found 2 days ago

Select Delta flight, departing Mon, Sep 1 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $310 found 2 days ago

Thu, Sep 4 - Mon, Sep 22

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$310 Roundtrip, found 2 days ago

$310

Roundtrip

found 2 days ago

Select Delta flight, departing Thu, Sep 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $310 found 2 days ago

Thu, Sep 4 - Mon, Sep 22

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$313 Roundtrip, found 2 days ago

$313

Roundtrip

found 2 days ago

Select United flight, departing Thu, Sep 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $313 found 2 days ago

Fri, Sep 19 - Tue, Sep 30

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$313 Roundtrip, found 5 days ago

$313

Roundtrip

found 5 days ago

Select Delta flight, departing Fri, Sep 19 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 30, priced at $313 found 5 days ago

Mon, Aug 4 - Tue, Aug 19

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$317 Roundtrip, found 1 day ago

$317

Roundtrip

found 1 day ago

Select American Airlines flight, departing Mon, Aug 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Aug 19, priced at $317 found 1 day ago

Mon, Sep 1 - Sun, Sep 21

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$323 Roundtrip, found 2 days ago

$323

Roundtrip

found 2 days ago

Select Delta flight, departing Mon, Sep 1 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Sep 21, priced at $323 found 2 days ago

Wed, Aug 6 - Wed, Aug 20

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$327 Roundtrip, found 1 day ago

$327

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Aug 6 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Aug 20, priced at $327 found 1 day ago

Thu, Sep 4 - Mon, Sep 22

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$330 Roundtrip, found 2 days ago

$330

Roundtrip

found 2 days ago

Select United flight, departing Thu, Sep 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $330 found 2 days ago

Sun, Aug 3 - Thu, Aug 21

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$341 Roundtrip, found 1 day ago

$341

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Aug 3 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Thu, Aug 21, priced at $341 found 1 day ago

Mon, Sep 15 - Sun, Sep 28

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$363 Roundtrip, found 5 days ago

$363

Roundtrip

found 5 days ago

Select JetBlue Airways flight, departing Mon, Sep 15 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Sep 28, priced at $363 found 5 days ago

Mon, Aug 4 - Mon, Aug 18

PHL

Philadelphia Intl.

PAE

Seattle Paine Field Intl. Airport

$381 Roundtrip, found 1 day ago

$381

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Philadelphia Intl. to Seattle Paine Field Intl. Airport, returning Mon, Aug 18, priced at $381 found 1 day ago

Mon, Aug 11 - Wed, Aug 20

ABE

Lehigh Valley Intl.

SEA

Seattle - Tacoma Intl.

$398 Roundtrip, found 4 days ago

$398

Roundtrip

found 4 days ago

Select American Airlines flight, departing Mon, Aug 11 from Lehigh Valley Intl. to Seattle - Tacoma Intl., returning Wed, Aug 20, priced at $398 found 4 days ago

Wed, Aug 6 - Wed, Aug 20

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$427 Roundtrip, found 1 day ago

$427

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Wed, Aug 6 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Aug 20, priced at $427 found 1 day ago