Flights from Philadelphia to Black Diamond

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, Jun 3 - Tue, Jun 10

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$210 Roundtrip, found 3 days ago

$210

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, Jun 3 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Jun 10, priced at $210 found 3 days ago

Mon, Jun 2 - Tue, Jun 10

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$220 Roundtrip, found 3 days ago

$220

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jun 2 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Jun 10, priced at $220 found 3 days ago

Fri, Jun 6 - Mon, Jun 9

PHL

Philadelphia Intl.

PAE

Seattle Paine Field Intl. Airport

$230 Roundtrip, found 3 days ago

$230

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Jun 6 from Philadelphia Intl. to Seattle Paine Field Intl. Airport, returning Mon, Jun 9, priced at $230 found 3 days ago

Tue, Jun 3 - Sun, Jun 8

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$231 Roundtrip, found 3 days ago

$231

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, Jun 3 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 8, priced at $231 found 3 days ago

Sun, Jun 1 - Tue, Jun 10

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$240 Roundtrip, found 3 days ago

$240

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sun, Jun 1 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Jun 10, priced at $240 found 3 days ago

Mon, Jun 2 - Sun, Jun 8

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$241 Roundtrip, found 3 days ago

$241

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jun 2 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 8, priced at $241 found 3 days ago

Tue, Jun 3 - Thu, Jun 12

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$248 Roundtrip, found 3 days ago

$248

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, Jun 3 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Thu, Jun 12, priced at $248 found 3 days ago

Thu, May 29 - Sat, Jun 7

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$250 Roundtrip, found 3 days ago

$250

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, May 29 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, Jun 7, priced at $250 found 3 days ago

Sat, May 31 - Sun, Jun 8

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$251 Roundtrip, found 3 days ago

$251

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, May 31 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 8, priced at $251 found 3 days ago

Fri, Jul 25 - Fri, Aug 8

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$255 Roundtrip, found 6 days ago

$255

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Jul 25 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, Aug 8, priced at $255 found 6 days ago

Fri, Jun 6 - Fri, Jun 13

PHL

Philadelphia Intl.

PAE

Seattle Paine Field Intl. Airport

$258 Roundtrip, found 3 days ago

$258

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Jun 6 from Philadelphia Intl. to Seattle Paine Field Intl. Airport, returning Fri, Jun 13, priced at $258 found 3 days ago

Thu, May 29 - Fri, Jun 6

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$260 Roundtrip, found 3 days ago

$260

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, May 29 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, Jun 6, priced at $260 found 3 days ago

Tue, Aug 26 - Wed, Sep 3

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$297 Roundtrip, found 1 day ago

$297

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Tue, Aug 26 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Sep 3, priced at $297 found 1 day ago

Fri, Jun 13 - Mon, Jun 16

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$313 Roundtrip, found 1 day ago

$313

Roundtrip

found 1 day ago

Select United flight, departing Fri, Jun 13 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Jun 16, priced at $313 found 1 day ago

Sat, Aug 23 - Fri, Aug 29

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$313 Roundtrip, found 1 day ago

$313

Roundtrip

found 1 day ago

Select Delta flight, departing Sat, Aug 23 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, Aug 29, priced at $313 found 1 day ago

Wed, Jun 4 - Wed, Jun 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$353 Roundtrip, found 1 day ago

$353

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Wed, Jun 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Jun 11, priced at $353 found 1 day ago

Wed, Aug 20 - Tue, Sep 2

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$357 Roundtrip, found 1 day ago

$357

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Wed, Aug 20 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 2, priced at $357 found 1 day ago

Fri, Jun 13 - Mon, Jun 16

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$372 Roundtrip, found 1 day ago

$372

Roundtrip

found 1 day ago

Select American Airlines flight, departing Fri, Jun 13 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Jun 16, priced at $372 found 1 day ago

Wed, Jun 4 - Wed, Jun 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$422 Roundtrip, found 1 day ago

$422

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Wed, Jun 4 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Jun 11, priced at $422 found 1 day ago

Sun, Jun 1 - Sun, Jun 8

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$498 Roundtrip, found 3 days ago

$498

Roundtrip

found 3 days ago

Select Sun Country Airlines flight, departing Sun, Jun 1 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 8, priced at $498 found 3 days ago