For a smooth departure from IAD, use the Aerotrain to quickly reach distant gates, avoiding long walks.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $133 (Kiwi.com) |
One-way from | $79 (Mytrip) |
Popular in | June |
Cheapest in | April |
Average price | $299 |
Good round-trip deal | $179 or less |
Good one-way deal | $172 or less |
Fly from
Fly to
Route
Depart
Return
Price
BaltimorePhiladelphia
BWI - PHL
BWIPHL
Baltimore/Washington
Wed 12/3
7:30 am-7:43 pm
1 stop12h 13m
Philadelphia
Wed 12/10
8:00 am-6:55 pm
1 stop10h 55m
BaltimorePhiladelphia
BWI - PHL
BWIPHL
Baltimore/Washington
Tue 12/2
7:30 am-12:40 am
1 stop17h 10m
Philadelphia
Tue 12/9
10:00 pm-9:22 am
1 stop11h 22m
BaltimorePhiladelphia
BWI - PHL
BWIPHL
Baltimore/Washington
Wed 11/19
2:00 pm-9:17 am
1 stop19h 17m
Philadelphia
Sun 11/23
5:50 pm-4:46 pm
1 stop22h 56m
BaltimorePhiladelphia
BWI - PHL
BWIPHL
Baltimore/Washington
Mon 12/1
8:45 pm-12:40 am
1 stop27h 55m
Philadelphia
Mon 12/8
10:00 pm-9:22 am
1 stop11h 22m
BaltimorePhiladelphia
BWI - PHL
BWIPHL
Baltimore/Washington
Wed 12/17
7:06 pm-12:25 pm
1 stop17h 19m
Philadelphia
Mon 12/22
8:41 pm-12:29 am
1 stop27h 48m
BaltimorePhiladelphia
BWI - PHL
BWIPHL
Baltimore/Washington
Thu 2/12
9:21 am-12:13 am
1 stop14h 52m
Philadelphia
Tue 2/17
8:00 pm-9:23 pm
1 stop25h 23m
BaltimorePhiladelphia
BWI - PHL
BWIPHL
Baltimore/Washington
Mon 11/17
9:36 pm-2:15 pm
1 stop16h 39m
Philadelphia
Sun 11/23
5:50 pm-4:46 pm
1 stop22h 56m
BaltimorePhiladelphia
BWI - PHL
BWIPHL
Baltimore/Washington
Sun 12/7
4:38 pm-12:36 am
1 stop7h 58m
Philadelphia
Tue 12/9
8:00 am-12:24 am
2 stops16h 24m
Washington, D.C.Philadelphia
DCA - PHL
DCAPHL
Washington, D.C. Reagan-National
Wed 12/3
1:41 pm-2:49 pm
Nonstop1h 08m
Philadelphia
Wed 12/10
7:49 pm-8:58 pm
Nonstop1h 09m
Washington, D.C.Philadelphia
IAD - PHL
IADPHL
Washington, D.C. Dulles Intl
Tue 12/2
8:20 am-9:35 am
Nonstop1h 15m
Philadelphia
Tue 12/9
10:33 am-11:40 am
Nonstop1h 07m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Philadelphia (average of $54). Flying from Washington, D.C. to Philadelphia in January is currently the most expensive (average of $148). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from Washington, D.C. to Philadelphia, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 48% versus a flight in the evening.
Travelers seeking maximum savings on their Washington, D.C. to Philadelphia flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from WAS to PHL are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
Crew
Comfort
Food
Entertainment
Boarding
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Crew
Comfort
Food
Entertainment
Boarding
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Crew
Comfort
Food
Entertainment
Boarding
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$414 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$179 | Average$406 | FlexibilityNo cancel fee | On-time69% |