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.

Fri, May 9 - Sat, May 10

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$218 Roundtrip, found 8 hours ago

$218

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Fri, May 9 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 10, priced at $218 found 8 hours ago

Fri, May 9 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$228 Roundtrip, found 8 hours ago

$228

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Fri, May 9 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $228 found 8 hours ago

Mon, May 5 - Sat, May 10

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$238 Roundtrip, found 8 hours ago

$238

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Mon, May 5 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 10, priced at $238 found 8 hours ago

Mon, May 5 - Fri, May 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$248 Roundtrip, found 8 hours ago

$248

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Mon, May 5 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 9, priced at $248 found 8 hours ago

Wed, May 7 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$259 Roundtrip, found 8 hours ago

$259

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Wed, May 7 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $259 found 8 hours ago

Wed, May 7 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$268 Roundtrip, found 8 hours ago

$268

Roundtrip

found 8 hours ago

Select United flight, departing Wed, May 7 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $268 found 8 hours ago

Wed, May 7 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$273 Roundtrip, found 8 hours ago

$273

Roundtrip

found 8 hours ago

Select United flight, departing Wed, May 7 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $273 found 8 hours ago

Wed, May 7 - Tue, May 13

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$275 Roundtrip, found 8 hours ago

$275

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Wed, May 7 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, May 13, priced at $275 found 8 hours ago

Wed, Jun 11 - Sun, Jun 15

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$283 Roundtrip, found 5 days ago

$283

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 15, priced at $283 found 5 days ago

Mon, Jun 9 - Sat, Jun 14

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$291 Roundtrip, found 5 days ago

$291

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jun 9 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, Jun 14, priced at $291 found 5 days ago

Wed, May 7 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$292 Roundtrip, found 8 hours ago

$292

Roundtrip

found 8 hours ago

Select United flight, departing Wed, May 7 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $292 found 8 hours ago

Wed, May 7 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$297 Roundtrip, found 8 hours ago

$297

Roundtrip

found 8 hours ago

Select United flight, departing Wed, May 7 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $297 found 8 hours ago

Wed, May 7 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$298 Roundtrip, found 8 hours ago

$298

Roundtrip

found 8 hours ago

Select United flight, departing Wed, May 7 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $298 found 8 hours ago

Mon, Jun 23 - Sat, Jul 5

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$298 Roundtrip, found 18 hours ago

$298

Roundtrip

found 18 hours ago

Select Delta flight, departing Mon, Jun 23 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, Jul 5, priced at $298 found 18 hours ago

Mon, Jun 9 - Fri, Jun 13

PHL

Philadelphia Intl.

PAE

Seattle Paine Field Intl. Airport

$311 Roundtrip, found 5 days ago

$311

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jun 9 from Philadelphia Intl. to Seattle Paine Field Intl. Airport, returning Fri, Jun 13, priced at $311 found 5 days ago

Mon, Aug 25 - Sun, Aug 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$337 Roundtrip, found 1 day ago

$337

Roundtrip

found 1 day ago

Select American Airlines flight, departing Mon, Aug 25 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Aug 31, priced at $337 found 1 day ago

Mon, Aug 25 - Sun, Aug 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$362 Roundtrip, found 1 day ago

$362

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Mon, Aug 25 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Aug 31, priced at $362 found 1 day ago

Thu, May 8 - Fri, May 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$381 Roundtrip, found 8 hours ago

$381

Roundtrip

found 8 hours ago

Select Hawaiian Airlines flight, departing Thu, May 8 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 9, priced at $381 found 8 hours ago

Thu, Jun 12 - Mon, Jun 16

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$461 Roundtrip, found 5 days ago

$461

Roundtrip

found 5 days ago

Select JetBlue Airways flight, departing Thu, Jun 12 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Jun 16, priced at $461 found 5 days ago

Mon, Aug 25 - Sun, Aug 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$468 Roundtrip, found 1 day ago

$468

Roundtrip

found 1 day ago

Select Sun Country Airlines flight, departing Mon, Aug 25 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Aug 31, priced at $468 found 1 day ago