Book United Seattle to Philadelphia flight deals from $459

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A river runs alongside skyscrapers in Philadelphia at sunset

Plan ahead for flights from Seattle to Philadelphia

from
to
Type
Dates
Price*
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Mon 16 Jul 2018
Return Tue 31 Jul 2018
from$ 459*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Sat 14 Jul 2018
Return Sun 29 Jul 2018
from$ 477*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Tue 17 Jul 2018
Return Wed 1 Aug 2018
from$ 518*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Wed 18 Jul 2018
Return Thu 2 Aug 2018
from$ 539*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Tue 3 Jul 2018
Return Wed 18 Jul 2018
from$ 557*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Thu 19 Jul 2018
Return Fri 3 Aug 2018
from$ 557*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Sun 1 Jul 2018
Return Mon 16 Jul 2018
from$ 584*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Mon 2 Jul 2018
Return Tue 17 Jul 2018
from$ 584*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Fri 6 Jul 2018
Return Sat 21 Jul 2018
from$ 584*Viewed: 15 hours ago
Seattle (SEA)
to Philadelphia (PHL)
Roundtrip
Depart Mon 9 Jul 2018
Return Tue 24 Jul 2018
from$ 584*Viewed: 15 hours ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Philadelphia

77 °FSaturday06/23/2018
79 °FSunday06/24/2018
79 °FMonday06/25/2018
74 °FTuesday06/26/2018
78 °FWednesday06/27/2018
78 °FThursday06/28/2018
80 °FFriday06/29/2018
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