Flights from Seattle to Collingswood

Cheapest flights from Seattle

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.

Thu, Aug 7 - Thu, Aug 28

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$254 Roundtrip, found 6 days ago

$254

Roundtrip

found 6 days ago

Select United flight, departing Thu, Aug 7 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Thu, Aug 28, priced at $254 found 6 days ago

Tue, Aug 5 - Sat, Sep 6

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$274 Roundtrip, found 6 days ago

$274

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Aug 5 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Sat, Sep 6, priced at $274 found 6 days ago

Wed, Aug 6 - Wed, Sep 3

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$277 Roundtrip, found 11 hours ago

$277

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Wed, Aug 6 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Wed, Sep 3, priced at $277 found 11 hours ago

Wed, Aug 6 - Wed, Sep 3

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$277 Roundtrip, found 11 hours ago

$277

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Wed, Aug 6 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Wed, Sep 3, priced at $277 found 11 hours ago

Tue, Aug 5 - Thu, Sep 4

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$282 Roundtrip, found 6 days ago

$282

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Aug 5 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Thu, Sep 4, priced at $282 found 6 days ago

Wed, Aug 6 - Sun, Aug 31

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$285 Roundtrip, found 6 days ago

$285

Roundtrip

found 6 days ago

Select Delta flight, departing Wed, Aug 6 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Sun, Aug 31, priced at $285 found 6 days ago

Wed, Aug 6 - Wed, Sep 3

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$287 Roundtrip, found 11 hours ago

$287

Roundtrip

found 11 hours ago

Select United flight, departing Wed, Aug 6 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Wed, Sep 3, priced at $287 found 11 hours ago

Thu, Aug 7 - Sat, Sep 6

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$294 Roundtrip, found 6 days ago

$294

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Aug 7 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Sat, Sep 6, priced at $294 found 6 days ago

Wed, Aug 6 - Wed, Sep 3

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$297 Roundtrip, found 11 hours ago

$297

Roundtrip

found 11 hours ago

Select United flight, departing Wed, Aug 6 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Wed, Sep 3, priced at $297 found 11 hours ago

Thu, Aug 7 - Thu, Aug 28

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$299 Roundtrip, found 6 days ago

$299

Roundtrip

found 6 days ago

Select United flight, departing Thu, Aug 7 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Thu, Aug 28, priced at $299 found 6 days ago

Fri, Aug 8 - Mon, Aug 25

PAE

Seattle Paine Field Intl. Airport

PHL

Philadelphia Intl.

$302 Roundtrip, found 6 days ago

$302

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Seattle Paine Field Intl. Airport to Philadelphia Intl., returning Mon, Aug 25, priced at $302 found 6 days ago

Thu, Aug 7 - Thu, Aug 28

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$304 Roundtrip, found 6 days ago

$304

Roundtrip

found 6 days ago

Select United flight, departing Thu, Aug 7 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Thu, Aug 28, priced at $304 found 6 days ago

Sat, Aug 9 - Sat, Sep 6

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$304 Roundtrip, found 6 days ago

$304

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 9 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Sat, Sep 6, priced at $304 found 6 days ago

Fri, Aug 8 - Sun, Aug 31

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$308 Roundtrip, found 6 days ago

$308

Roundtrip

found 6 days ago

Select Delta flight, departing Fri, Aug 8 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Sun, Aug 31, priced at $308 found 6 days ago

Sat, Aug 9 - Thu, Sep 4

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$312 Roundtrip, found 6 days ago

$312

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 9 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Thu, Sep 4, priced at $312 found 6 days ago

Thu, Aug 7 - Thu, Aug 28

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$314 Roundtrip, found 6 days ago

$314

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Aug 7 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Thu, Aug 28, priced at $314 found 6 days ago

Wed, Aug 6 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$319 Roundtrip, found 6 days ago

$319

Roundtrip

found 6 days ago

Select JetBlue Airways flight, departing Wed, Aug 6 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Tue, Sep 2, priced at $319 found 6 days ago

Wed, Aug 6 - Wed, Sep 3

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$327 Roundtrip, found 11 hours ago

$327

Roundtrip

found 11 hours ago

Select Alaska Airlines flight, departing Wed, Aug 6 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Wed, Sep 3, priced at $327 found 11 hours ago

Mon, Aug 4 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$352 Roundtrip, found 6 days ago

$352

Roundtrip

found 6 days ago

Select Hawaiian Airlines flight, departing Mon, Aug 4 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Tue, Sep 2, priced at $352 found 6 days ago

Thu, Aug 7 - Thu, Aug 28

SEA

Seattle - Tacoma Intl.

PHL

Philadelphia Intl.

$373 Roundtrip, found 6 days ago

$373

Roundtrip

found 6 days ago

Select Sun Country Airlines flight, departing Thu, Aug 7 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Thu, Aug 28, priced at $373 found 6 days ago