Cheap flights from Philadelphia to San Juan Islands from CA $131

View CA $131 flight on Tue, May 27, 2025Opens in a new window

Popular airlines from Philadelphia to San Juan Islands

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Cheap flights from Philadelphia (ILG) to San Juan Islands (SEA)

Prices were available within the past 7 days and start at CA $131 for one-way flights and CA $315 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu., May 29 - Mon., Jun. 2
PHL
Philadelphia
SEA
Seattle
CA $315 Roundtrip, found 12 hours ago
CA $315
Roundtrip
found 12 hours ago
Select Spirit Airlines flight, departing Thu., May 29 from Philadelphia to Seattle, returning Mon., Jun. 2, priced at CA $315 found 12 hours ago
Spirit Airlines
Thu., May 29 - Sat., Jun. 7
PHL
Philadelphia
SEA
Seattle
CA $350 Roundtrip, found 2 days ago
CA $350
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Thu., May 29 from Philadelphia to Seattle, returning Sat., Jun. 7, priced at CA $350 found 2 days ago
Delta
Thu., May 29 - Mon., Jun. 2
PHL
Philadelphia
SEA
Seattle
CA $356 Roundtrip, found 12 hours ago
CA $356
Roundtrip
found 12 hours ago
Select Delta flight, departing Thu., May 29 from Philadelphia to Seattle, returning Mon., Jun. 2, priced at CA $356 found 12 hours ago
Spirit Airlines
Tue., Aug. 19 - Sat., Aug. 23
PHL
Philadelphia
SEA
Seattle
CA $370 Roundtrip, found 6 days ago
CA $370
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Tue., Aug. 19 from Philadelphia to Seattle, returning Sat., Aug. 23, priced at CA $370 found 6 days ago
Delta
Fri., May 9 - Sat., May 17
PHL
Philadelphia
SEA
Seattle
CA $371 Roundtrip, found 3 days ago
CA $371
Roundtrip
found 3 days ago
Select Delta flight, departing Fri., May 9 from Philadelphia to Seattle, returning Sat., May 17, priced at CA $371 found 3 days ago
Spirit Airlines
Thu., May 29 - Mon., Jun. 2
PHL
Philadelphia
SEA
Seattle
CA $372 Roundtrip, found 12 hours ago
CA $372
Roundtrip
found 12 hours ago
Select Spirit Airlines flight, departing Thu., May 29 from Philadelphia to Seattle, returning Mon., Jun. 2, priced at CA $372 found 12 hours ago
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