Expect security screening at STL to take 5 to 10 minutes during off-peak times. Check real-time wait times online before heading to the airport.
Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $330 (American Airlines) |
One-way from | $92 (Mytrip) |
Popular in | December |
Cheapest in | June |
Average price | $417 |
Good round-trip deal | $444 or less |
Good one-way deal | $230 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Mon 4/21
6:15 am-9:27 am
Nonstop2h 12m
Philadelphia
Wed 4/23
4:13 pm-11:33 pm
1 stop8h 20m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Fri 4/11
9:50 am-10:08 am
2 stops23h 18m
Philadelphia
Mon 4/14
7:00 am-6:41 pm
2 stops12h 41m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 5/1
7:35 pm-10:45 pm
Nonstop2h 10m
Philadelphia
Tue 5/6
2:40 pm-4:05 pm
Nonstop2h 25m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 3/27
5:24 pm-7:30 am
1 stop13h 06m
Philadelphia
Sat 3/29
1:23 pm-11:49 pm
1 stop11h 26m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 4/22
6:30 am-10:38 am
1 stop27h 08m
Philadelphia
Sat 4/26
6:15 am-8:04 pm
2 stops14h 49m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 3/27
6:47 pm-8:58 am
1 stop13h 11m
Philadelphia
Sat 3/29
10:12 pm-5:52 pm
2 stops20h 40m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sat 4/12
7:05 am-2:51 pm
1 stop6h 46m
Philadelphia
Sun 4/13
4:50 pm-11:04 pm
2 stops7h 14m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 4/29
6:10 pm-4:40 pm
1 stop21h 30m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Sat 4/12
6:51 pm-5:31 am
1 stop9h 40m
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Thu 4/24
9:50 am-12:09 am
2 stops13h 19m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars |
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 61 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 81% 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 Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from STL to PHL are scheduled on a Friday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).
In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.
If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).
Crew
Boarding
Comfort
Food
Entertainment
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Boarding
Comfort
Food
Entertainment
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Boarding
Comfort
Food
Entertainment
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Boarding
Comfort
Food
Entertainment
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Boarding
Comfort
Food
Entertainment
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Boarding
Comfort
Food
Entertainment
Overall
Reviews
Ila,Mar 2025
HOU - DAL
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$48 | Average$88 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$131 | Average$297 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$196 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$284 | Average$411 | FlexibilityNo cancel fee | On-time63% |