Lowest Prices
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
$127
Southwest Airlines
• 2 stops
• 13h 40m
Sep 26 – Oct 03
The cheapest round trip flight from Philadelphia to St Louis (PHL-STL-PHL) is currently $127
Cheapest Direct Flight
$131
Southwest Airlines
• nonstop
• 3h 40m
Sep 26
The cheapest nonstop flight from Philadelphia to St Louis (PHL-STL) is currently $131
Fastest Flight
3h 40m
The fastest nonstop flight from Philadelphia to St Louis (PHL-STL) takes 3h 40m
Top Airlines Flying from Philadelphia to St Louis
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 26 - Oct 03, Economy
Philadelphia → St Louis
13h 40m
- • 2 stops
Philadelphia → St Louis
5h 55m
- • 1 stop
Southwest Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
13h 45m
- • 1 stop
Philadelphia → St Louis
6h 44m
- • 1 stop
Southwest Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
8h 33m
- • 1 stop
Philadelphia → St Louis
5h 55m
- • 1 stop
American Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
10h 15m
- • 1 stop
Philadelphia → St Louis
3h 25m
- • nonstop
American Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
17h 35m
2:32 PM - 12:27 AM • 1 stop
Philadelphia → St Louis
7h 18m
11:01 AM - 4:39 PM • 1 stop
American 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 26 - Oct 03, Economy
Philadelphia → St Louis
13h 40m
- • 2 stops
Philadelphia → St Louis
5h 55m
- • 1 stop
Southwest Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
13h 45m
- • 1 stop
Philadelphia → St Louis
6h 44m
- • 1 stop
Southwest Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
8h 33m
- • 1 stop
Philadelphia → St Louis
5h 55m
- • 1 stop
American Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
10h 15m
- • 1 stop
Philadelphia → St Louis
3h 25m
- • nonstop
American Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
17h 35m
2:32 PM - 12:27 AM • 1 stop
Philadelphia → St Louis
7h 18m
11:01 AM - 4:39 PM • 1 stop
American 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 26 - Oct 03, Economy
Philadelphia → St Louis
3h 40m
11:55 AM - 1:15 PM • nonstop
Philadelphia → St Louis
3h 25m
4:55 PM - 8:00 PM • nonstop
Southwest Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
4h 9m
7:55 PM - 9:44 PM • nonstop
Philadelphia → St Louis
3h 25m
4:55 PM - 8:00 PM • nonstop
American Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
3h 55m
8:54 AM - 10:29 AM • nonstop
Philadelphia → St Louis
3h 25m
4:55 PM - 8:00 PM • nonstop
American Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
3h 40m
- • nonstop
Philadelphia → St Louis
7h 13m
- • nonstop
Southwest Airlines
Sep 26 - Oct 03, Economy
Philadelphia → St Louis
3h 55m
- • nonstop
Philadelphia → St Louis
7h 13m
- • nonstop
American 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 8:54 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 AA : USD 314
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 7:5500 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 |
More Flight Options for Philadelphia (PHL) and St Louis (STL)
Flights from Philadelphia (PHL)
to Orlando (MCO)
Flights from Philadelphia (PHL)
to Miami (MIA)
Flights from Philadelphia (PHL)
to Savannah (SAV)
Flights from Philadelphia (PHL)
to Las Vegas (LAS)
Flights from Philadelphia (PHL)
to Atlanta (ATL)
Flights from Philadelphia (PHL)
to Los Angeles (LAX)
Flights from Philadelphia (PHL)
to Charleston (CHS)
Flights from Philadelphia (PHL)
to Toronto (YYZ)
Flights from Philadelphia (PHL)
to Chicago (CHI)
Flights from Philadelphia (PHL)
to San Juan (SJU)
Flights from Philadelphia (PHL)
to Dallas (DFW)
Flights from Philadelphia (PHL)
to Dallas (DFW)
Flights from Philadelphia (PHL)
to Barranquilla (BAQ)
Flights from Philadelphia (PHL)
to Nashville (BNA)
Flights from Philadelphia (PHL)
to St Louis (STL)
Flights from Philadelphia (PHL)
to Chicago (ORD)
Flights from Philadelphia (PHL)
to Jacksonville (JAX)
Flights from Philadelphia (PHL)
to Santo Domingo (SDQ)
Flights from Philadelphia (PHL)
to Vancouver (YVR)
Flights from Philadelphia (PHL)
to Oranjestad (AUA)
Flights from Jacksonville (JAX)
to St Louis (STL)
Flights from Los Angeles (LAX)
to St Louis (STL)
Flights from Norfolk (ORF)
to St Louis (STL)
Flights from Salt Lake City (SLC)
to St Louis (STL)
Flights from Atlanta (ATL)
to St Louis (STL)
Flights from Phoenix (PHX)
to St Louis (STL)
Flights from Nashville (BNA)
to St Louis (STL)
Flights from San Antonio (SAT)
to St Louis (STL)
Flights from Miami (MIA)
to St Louis (STL)
Flights from Philadelphia (PHL)
to St Louis (STL)
Flights from Pittsburgh (PIT)
to St Louis (STL)
Flights from Detroit (DTW)
to St Louis (STL)
Flights from Minneapolis (MSP)
to St Louis (STL)
Flights from Minneapolis (MSP)
to St Louis (STL)
Flights from Raleigh/Durham (RDU)
to St Louis (STL)
Flights from Charleston (CHS)
to St Louis (STL)
Flights from Newark (EWR)
to St Louis (STL)
Flights from New York (LGA)
to St Louis (STL)
Flights from Denver (DEN)
to St Louis (STL)
Flights from Ontario (ONT)
to St Louis (STL)
Cheap flights to North America (NA)
Cheap flights to United States (US)
Cheap flights to Pennsylvania (US-PA)
Cheap flights to Missouri (US-MO)
Cheap flights from North America (NA)
Cheap flights from United States (US)
Cheap flights from Pennsylvania (US-PA)
Cheap flights from Missouri (US-MO)
Flights to Philadelphia (PHL)
Flights to St Louis (STL)
Flights from Philadelphia (PHL)
Flights from St Louis (STL)
Flights from St Louis (STL)
to Philadelphia (PHL)
Why Fareleaders for PHL to STL Plane Tickets
New Deals Everyday
Get the best prices on PHL to STL flights—we update our fares daily so you never miss a saving.
No Service Fees
Compare hundreds of Philadelphia to St Louis flights and secure the best deals—we never add any service fees.