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

10 Sept
Southwest Airlines
05:15SEA
14:55PHL
1 StopUSD 130VIEW DEAL
10 Sept
Alaska Airlines
09:33SEA
14:56PHL
DirectUSD 171VIEW DEAL
12 Sept
American Airlines
06:18SEA
20:24PHL
3 StopUSD 1,066VIEW DEAL
15 Sept
Southwest Airlines
23:05SEA
08:35PHL
1 StopUSD 194VIEW DEAL
19 Sept
Southwest Airlines
23:05SEA
08:10PHL
1 StopUSD 193VIEW DEAL
20 Sept
Southwest Airlines
05:35SEA
15:05PHL
1 StopUSD 280VIEW DEAL
29 Sept
Frontier Airlines
07:00SEA
02:36PHL
1 StopUSD 92VIEW DEAL
29 Sept
Southwest Airlines
23:05SEA
08:35PHL
1 StopUSD 212VIEW DEAL
1 Oct
United Airlines
23:14SEA
06:43PHL
1 StopUSD 208VIEW DEAL

Seattle to Philadelphia monthly flight fare trend

Sep
from USD 92
Oct
from USD 208
Nov
No flights
Dec
No flights
Jan
No flights
Feb
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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