Washington to Philadelphia
IADPHL
Fly from Washington to Philadelphia starting at USD 51 with Frontier Airlines.
Best fare available on Dec 8, 2026.
Limited seats. Better plans. Book before it's gone.
Washington to Philadelphia cheapest flights this week
Washington to Philadelphia monthly flight fare trend
Sep
No flights
Oct
from USD 53
Nov
from USD 138
Dec
from USD 51
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
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