Expect security screening at STL to take 5-10 minutes during off-peak times. Check real-time wait times online before heading to the airport.
Round-trip from | $147 (Expedia) |
---|---|
One-way from | $53 (Priceline) |
Popular in | March |
Cheapest in | August |
Average price | $226 |
Good round-trip deal | $503 or less |
Good one-way deal | $244 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 8/14
2:30 pm-8:49 pm
1 stop5h 19m
Philadelphia
Sun 8/17
7:00 am-1:32 pm
1 stop7h 32m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Mon 8/4
10:47 am-10:26 pm
1 stop10h 39m
Philadelphia
Wed 8/6
6:54 pm-1:34 pm
1 stop19h 40m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Mon 7/14
5:40 pm-1:09 am
1 stop6h 29m
Philadelphia
Wed 7/16
5:30 pm-11:47 pm
1 stop7h 17m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Mon 8/4
8:25 pm-11:35 pm
Nonstop2h 10m
Philadelphia
Thu 8/7
7:50 am-9:10 am
Nonstop2h 20m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 8/14
4:54 pm-8:14 pm
Nonstop2h 20m
Philadelphia
Sat 8/16
7:05 pm-8:47 pm
Nonstop2h 42m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 8/21
10:17 am-7:22 pm
1 stop8h 05m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Fri 8/8
10:47 am-10:26 pm
1 stop10h 39m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 8/12
8:40 am-4:00 pm
1 stop6h 20m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sat 8/23
6:00 am-9:18 am
Nonstop2h 18m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sat 9/20
3:20 pm-9:31 pm
1 stop5h 11m
The price you pay for your flight from St. Louis to Philadelphia may vary depending on when you book. For the best chance of a lower fare, look to book 65 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, August is the cheapest month in which you can book a flight from St. Louis to Philadelphia (average of $236). Flying from St. Louis to Philadelphia in March is currently the most expensive (average of $295). 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.
It’s typically best to fly out from St. Louis to Philadelphia in the evening. Doing so could potentially save you 67% on the flight price compared to flying at noon, which is usually more expensive.
Travelers seeking maximum savings on their St. Louis to Philadelphia flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Comfort
Boarding
Overall
Entertainment
Crew
Food
Reviews
John,May 2025
PVD - BNA
Comfort
Boarding
Overall
Entertainment
Crew
Food
Reviews
John,May 2025
PVD - BNA
Comfort
Boarding
Overall
Entertainment
Crew
Food
Reviews
John,May 2025
PVD - BNA
Comfort
Boarding
Overall
Entertainment
Crew
Food
Reviews
John,May 2025
PVD - BNA
Comfort
Boarding
Overall
Entertainment
Crew
Food
Reviews
John,May 2025
PVD - BNA
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$51 | Average$137 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$130 | Average$436 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$149 | Average$360 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$196 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$286 | Average$409 | FlexibilityNo cancel fee | On-time63% |