Philadelphia to Seattle
PHLSEA
Fly from Philadelphia to Seattle starting at USD 140 with F9.
Best fare available on Apr 23, 2026.
Limited seats. Better plans. Book before it's gone.
Philadelphia to Seattle cheapest flights this week
20 Apr
F9
20:41PHL
--:--SEA
1 Stop$212VIEW DEAL
23 Apr
F9
20:41PHL
--:--SEA
1 Stop$140VIEW DEAL
Philadelphia to Seattle monthly flight fare trend
Apr
from USD 140
May
No flights
Jun
No flights
Jul
No flights
Aug
No flights
Sep
No flights
Airport Details
Origin
Philadelphia
Philadelphia International Airport (PHL)
Philadelphia, PHL
Zone
New York
Elev
36 ft
Destination
Seattle
Seattle–Tacoma International Airport (SEA)
Seattle, SEA
Zone
Los Angeles
Elev
433 ft
