Flights from Philadelphia to Dupont

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 3 days ago

$218

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, May 9 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 10, priced at $218 found 3 days ago

Fri, May 9 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$228 Roundtrip, found 3 days ago

$228

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, May 9 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $228 found 3 days ago

Mon, May 5 - Sat, May 10

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$238 Roundtrip, found 3 days ago

$238

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, May 5 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 10, priced at $238 found 3 days ago

Wed, May 28 - Thu, May 29

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$240 Roundtrip, found 2 hours ago

$240

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Wed, May 28 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Thu, May 29, priced at $240 found 2 hours ago

Fri, May 30 - Sun, Jun 1

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$241 Roundtrip, found 2 hours ago

$241

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Fri, May 30 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 1, priced at $241 found 2 hours ago

Wed, May 28 - Sat, May 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$247 Roundtrip, found 2 hours ago

$247

Roundtrip

found 2 hours ago

Select Spirit Airlines flight, departing Wed, May 28 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 31, priced at $247 found 2 hours ago

Mon, May 5 - Fri, May 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$248 Roundtrip, found 3 days ago

$248

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, May 5 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 9, priced at $248 found 3 days ago

Tue, May 27 - Fri, May 30

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$250 Roundtrip, found 2 hours ago

$250

Roundtrip

found 2 hours ago

Select Spirit Airlines flight, departing Tue, May 27 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 30, priced at $250 found 2 hours ago

Tue, May 27 - Fri, May 30

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$259 Roundtrip, found 2 hours ago

$259

Roundtrip

found 2 hours ago

Select United flight, departing Tue, May 27 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 30, priced at $259 found 2 hours ago

Sat, May 24 - Tue, May 27

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$260 Roundtrip, found 2 hours ago

$260

Roundtrip

found 2 hours ago

Select Spirit Airlines flight, departing Sat, May 24 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, May 27, priced at $260 found 2 hours ago

Sat, May 24 - Sun, Jun 1

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$261 Roundtrip, found 2 hours ago

$261

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Sat, May 24 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 1, priced at $261 found 2 hours ago

Tue, May 27 - Fri, May 30

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$264 Roundtrip, found 2 hours ago

$264

Roundtrip

found 2 hours ago

Select United flight, departing Tue, May 27 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 30, priced at $264 found 2 hours ago

Thu, May 29 - Sat, May 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$267 Roundtrip, found 2 hours ago

$267

Roundtrip

found 2 hours ago

Select Spirit Airlines flight, departing Thu, May 29 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 31, priced at $267 found 2 hours ago

Wed, May 7 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$268 Roundtrip, found 3 days ago

$268

Roundtrip

found 3 days ago

Select United flight, departing Wed, May 7 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $268 found 3 days ago

Wed, May 28 - Wed, May 28

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$281 Roundtrip, found 2 hours ago

$281

Roundtrip

found 2 hours ago

Select Delta flight, departing Wed, May 28 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, May 28, priced at $281 found 2 hours ago

Tue, May 27 - Fri, May 30

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$287 Roundtrip, found 2 hours ago

$287

Roundtrip

found 2 hours ago

Select United flight, departing Tue, May 27 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 30, priced at $287 found 2 hours ago

Sat, Sep 20 - Sun, Sep 28

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$337 Roundtrip, found 1 day ago

$337

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Sat, Sep 20 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Sep 28, priced at $337 found 1 day ago

Sat, Sep 20 - Sun, Sep 28

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$347 Roundtrip, found 1 day ago

$347

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Sep 28, priced at $347 found 1 day ago

Thu, May 8 - Fri, May 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$381 Roundtrip, found 3 days ago

$381

Roundtrip

found 3 days ago

Select Hawaiian Airlines flight, departing Thu, May 8 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 9, priced at $381 found 3 days ago

Mon, Aug 25 - Sun, Aug 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$468 Roundtrip, found 4 days ago

$468

Roundtrip

found 4 days 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 4 days ago