Cheap Flight Tickets from Philadelphia (PHL) to St Louis (STL), Starting at $175

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

$175

WN Southwest Airlines • 2 stops • 33h 35m

Aug 28 – Sep 01

The cheapest round trip flight from Philadelphia to St Louis (PHL-STL-PHL) is currently $175

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Cheapest Direct Flight

$237

WN Southwest Airlines • nonstop • 3h 45m

Aug 28

The cheapest nonstop flight from Philadelphia to St Louis (PHL-STL) is currently $237

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Fastest Flight

3h 35m

The fastest nonstop flight from Philadelphia to St Louis (PHL-STL) takes 3h 35m

Top Airlines Flying from Philadelphia to St Louis

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

Alaska Airlines -AS

Alaska Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

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.

Aug 28 - Sep 01, Economy
WN
Philadelphia → St Louis
33h 35m
2:10 PM - 9:25 AM • 2 stops
WN
Philadelphia → St Louis
18h 20m
8:35 AM - 8:35 PM • 1 stop
$175
Southwest Airlines
Aug 28 - Aug 28, Economy
WN
Philadelphia → St Louis
3h 35m
6:20 AM - 7:35 AM • nonstop
WN
Philadelphia → St Louis
8h 35m
3:45 PM - 10:00 PM • 1 stop
$611
Southwest Airlines
Aug 28 - Aug 28, Economy
WN
Philadelphia → St Louis
15h 20m
8:00 AM - 4:20 PM • 1 stop
WN
Philadelphia → St Louis
22h 10m
8:45 PM - 11:15 AM • 2 stops
$626
Southwest Airlines
Aug 28 - Aug 28, Economy
WN
Philadelphia → St Louis
15h 45m
8:00 AM - 4:45 PM • 2 stops
WN
Philadelphia → St Louis
27h 25m
8:55 PM - 2:40 PM • 2 stops
$631
Southwest Airlines
Aug 28 - Aug 28, Economy
WN
Philadelphia → St Louis
18h 45m
5:55 AM - 4:20 PM • 2 stops
WN
Philadelphia → St Louis
22h
8:55 PM - 11:15 AM • 2 stops
$631
Southwest Airlines
Aug 28 - Aug 28, Economy
WN
Philadelphia → St Louis
7h 15m
12:45 PM - 4:20 PM • 1 stop
WN
Philadelphia → St Louis
27h 30m
8:50 PM - 2:40 PM • 1 stop
$674
Southwest Airlines

Fly from Philadelphia to St Louis with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Philadelphia to St Louis? Find the biggest savings on one-way and round-trip tickets right here.

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 5:25 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 WN : USD 631
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 6:35 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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