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Uncover the best deals on Philadelphia to St Louis flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest PHL - STL Flights
Useful information for finding best airline tickets from Philadelphia International to Lambert St Louis International on your next trip.
Cheapest Round Trip Flight
$181
Delta Airlines
• 1 stop
• 9h 1m
Sep 16 – Sep 19
The cheapest round trip flight from Philadelphia to St Louis (PHL-STL-PHL) is currently $181
Cheapest Direct Flight
$181
Southwest Airlines
• nonstop
• 3h 35m
Sep 16
The cheapest nonstop flight from Philadelphia to St Louis (PHL-STL) is currently $181
Fastest Flight
3h 35m
The fastest nonstop flight from Philadelphia to St Louis (PHL-STL) takes 3h 35m
Latest Flight Deals from Philadelphia (PHL) to St Louis (STL)
Compare and book low fare round-trip air tickets from Philadelphia to St Louis. Ideal for travelers with confirmed return itineraries.
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
9h 1m
12:29 PM - 5:10 PM • 1 stop
Philadelphia → St Louis
6h 44m
6:40 AM - 11:44 AM • 1 stop
Delta Airlines
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
10h 19m
10:35 AM - 3:54 PM • 1 stop
Philadelphia → St Louis
6h 44m
6:40 AM - 11:44 AM • 1 stop
Delta Airlines
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
11h 40m
1:55 PM - 7:55 PM • 1 stop
Philadelphia → St Louis
3h 30m
10:15 AM - 1:25 PM • nonstop
Southwest Airlines
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
3h 40m
2:45 PM - 4:05 PM • nonstop
Philadelphia → St Louis
10h 45m
7:15 AM - 3:00 PM • 1 stop
Southwest Airlines
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
7h 15m
6:40 PM - 10:15 PM • 1 stop
Philadelphia → St Louis
3h 30m
10:15 AM - 1:25 PM • nonstop
Southwest Airlines
Flying to St Louis soon? We've surfaced some of the most affordable last-minute flights from Philadelphia to St Louis, ideal for urgent plans or spontaneous trips.
Sep 07 - Sep 13, Economy
Philadelphia → St Louis
3h 35m
6:20 AM - 7:35 AM • nonstop
Philadelphia → St Louis
3h 35m
7:35 PM - 10:50 PM • nonstop
Southwest Airlines
Looking for the fastest way to St Louis? These direct flight options from PHL to STL offer both convenience and value—no layovers, just straight to your destination.
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
3h 35m
6:25 AM - 7:40 AM • nonstop
Philadelphia → St Louis
3h 30m
10:15 AM - 1:25 PM • nonstop
Southwest Airlines
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
3h 40m
2:45 PM - 4:05 PM • nonstop
Philadelphia → St Louis
3h 30m
10:15 AM - 1:25 PM • nonstop
Southwest Airlines
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
3h 55m
8:54 AM - 10:29 AM • nonstop
Philadelphia → St Louis
3h 43m
1:25 PM - 4:48 PM • nonstop
American Airlines
Sep 16 - Sep 19, Economy
Philadelphia → St Louis
4h 9m
7:55 PM - 9:44 PM • nonstop
Philadelphia → St Louis
3h 43m
1:25 PM - 4:48 PM • nonstop
American Airlines
Sep 07 - Sep 13, Economy
Philadelphia → St Louis
3h 35m
6:20 AM - 7:35 AM • nonstop
Philadelphia → St Louis
3h 35m
7:35 PM - 10:50 PM • nonstop
Southwest Airlines
FAQs on Philadelphia to St Louis Flights
What are the airports in Philadelphia?
PHL
What’s the most popular airline flying from PHL to STL?
The most popular airline flying from Philadelphia to St Louis are
Can I fly from PHL to STL non-stop?
Yes, you can fly PHL to STL non-stop on
Which airlines fly nonstop between Philadelphia and St Louis?
The non-stop flights between Philadelphia and St Louis are .
What’s the earliest departure time from PHL to STL Airport?
The earliest flight leaves PHL at 6:20 am and lands in STL - Lambert St Louis International
What are the airports in St Louis?
STL
Can I make changes to my Philadelphia to St Louis flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from PHL to STL?
Read the fare rules of the Philadelphia to St Louis air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Philadelphia and St Louis?
operate flights between Philadelphia and St Louis
How long does a flight from Philadelphia to St Louis take?
It takes approximately 2 hour to fly non-stop from PHL to STL, which is 813.49 miles by air.
Which airlines provide the cheapest flights from Philadelphia (PHL) to St Louis (STL) ?
In the past couple of days, the cheapest tickets to STL from PHL were found on DL : USD 181
Do I need a passport to fly between PHL and STL?
No
What’s the latest departure time from PHL to STL ?
The last flight leaves PHL at 7:55 pm
Philadelphia (PHL) to St Louis (STL): Airport Information
| Origin Airport | Philadelphia International , Philadelphia, US |
| Destination Airport | Lambert St Louis International , St Louis, US |
| Distance | 813 miles |
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