Washington to Philadelphia

IADPHL

Fly from Washington to Philadelphia starting at USD 117 with Frontier Airlines.Best fare available on Sep 12, 2026.Limited seats. Better plans. Book before it's gone.

Washington to Philadelphia cheapest flights this week

9 Sept
Frontier Airlines
21:04IAD
07:16PHL
1 StopUSD 138VIEW DEAL
10 Sept
Frontier Airlines
07:50IAD
18:14PHL
1 StopUSD 140VIEW DEAL
11 Sept
Frontier Airlines
11:12IAD
21:57PHL
1 StopUSD 172VIEW DEAL
11 Sept
Frontier Airlines
13:50IAD
00:30PHL
1 StopUSD 155VIEW DEAL
12 Sept
Frontier Airlines
07:00IAD
18:15PHL
1 StopUSD 117VIEW DEAL
12 Sept
Frontier Airlines
11:12IAD
00:09PHL
1 StopUSD 169VIEW DEAL
13 Sept
Frontier Airlines
18:13IAD
23:42PHL
1 StopUSD 243VIEW DEAL
14 Sept
Frontier Airlines
18:13IAD
10:52PHL
1 StopUSD 189VIEW DEAL
15 Sept
Frontier Airlines
18:13IAD
10:52PHL
1 StopUSD 212VIEW DEAL
16 Sept
Frontier Airlines
11:12IAD
11:40PHL
1 StopUSD 230VIEW DEAL

Washington to Philadelphia monthly flight fare trend

Sep
from USD 86
Oct
from USD 53
Nov
from USD 138
Dec
No flights
Jan
No flights
Feb
from USD 276

Airport Details

Origin

Washington

Washington Dulles International Airport (IAD)

Dulles, IAD
Zone

New York

Elev

312 ft

Destination

Philadelphia

Philadelphia International Airport (PHL)

Philadelphia, PHL
Zone

New York

Elev

36 ft

Flights from Washington

Flights from Washington to AtlantaFlights from Washington to AustinFlights from Washington to BostonFlights from Washington to CharlotteFlights from Washington to DenverFlights from Washington to DallasFlights from Washington to DetroitFlights from Washington to NewarkFlights from Washington to Fort LauderdaleFlights from Washington to Honolulu