Seattle to Philadelphia
SEAPHL
Fly from Seattle to Philadelphia starting at USD 92 with Frontier Airlines.
Best fare available on Sep 29, 2026.
Limited seats. Better plans. Book before it's gone.
Seattle to Philadelphia cheapest flights this week
Seattle to Philadelphia monthly flight fare trend
Aug
from USD 127
Sep
from USD 92
Oct
No flights
Nov
No flights
Dec
No flights
Jan
No flights
Airport Details
Origin
Seattle
Seattle–Tacoma International Airport (SEA)
Seattle, SEA
Zone
Los Angeles
Elev
433 ft
Destination
Philadelphia
Philadelphia International Airport (PHL)
Philadelphia, PHL
Zone
New York
Elev
36 ft
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