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

6 Sept
United Airlines
09:05SEA
21:59PHL
2 StopUSD 207VIEW DEAL
6 Sept
American Airlines
21:58SEA
03:16PHL
DirectUSD 264VIEW DEAL
6 Sept
Alaska Airlines
21:27SEA
02:40PHL
DirectUSD 199VIEW DEAL
6 Sept
Alaska Airlines
08:50SEA
15:53PHL
2 StopUSD 1,071VIEW DEAL
7 Sept
Southwest Airlines
23:00SEA
10:05PHL
1 StopUSD 196VIEW DEAL
9 Sept
Southwest Airlines
23:05SEA
09:25PHL
1 StopUSD 133VIEW DEAL
10 Sept
Southwest Airlines
05:15SEA
14:55PHL
1 StopUSD 130VIEW DEAL
10 Sept
Alaska Airlines
09:33SEA
14:56PHL
DirectUSD 171VIEW DEAL
15 Sept
Southwest Airlines
23:05SEA
08:35PHL
1 StopUSD 194VIEW DEAL
29 Sept
Frontier Airlines
07:00SEA
02:36PHL
1 StopUSD 92VIEW DEAL

Seattle to Philadelphia monthly flight fare trend

Sep
from USD 92
Oct
No flights
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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