Cheap Flight Tickets from Philadelphia (PHL) to St Louis (STL), Starting at $143

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

$388

F9 Frontier Airlines • 1 stop • 11h 51m

Jul 03 – Jul 10

The cheapest round trip flight from Philadelphia to St Louis (PHL-STL-PHL) is currently $388

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Cheapest One way Flight

$151

DL Delta Airlines • 1 stop •

Jun 27

The cheapest one way flight from Philadelphia to St Louis (PHL-STL) is currently $151

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Cheapest Direct Flight

$143

WN Southwest Airlines • nonstop • 2h

Jul 03

The cheapest nonstop flight from Philadelphia to St Louis (PHL-STL) is currently $143

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Fastest Flight

2h

The fastest nonstop flight from Philadelphia to St Louis (PHL-STL) takes 2h

Top Airlines Flying from Philadelphia to St Louis

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska 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.

Jul 03 - Jul 10, Economy
F9
Philadelphia → St Louis
11h 51m
10:11 AM - 11:49 PM • 1 stop
F9
Philadelphia → St Louis
10h 29m
4:09 PM - 11:38 PM • 1 stop
$388
Frontier Airlines
Jul 03 - Jul 10, Economy
AA
Philadelphia → St Louis
- • 1 stop
AA
Philadelphia → St Louis
- • nonstop
$388
American Airlines
Jul 03 - Jul 10, Economy
F9
Philadelphia → St Louis
11h 51m
8:33 PM - 11:49 PM • 1 stop
F9
Philadelphia → St Louis
10h 29m
4:09 PM - 11:40 PM • 1 stop
$408
Frontier Airlines
Jul 03 - Jul 10, Economy
AA
Philadelphia → St Louis
10h 36m
5:40 PM - 12:16 AM • 1 stop
AA
Philadelphia → St Louis
5h 22m
5:48 PM - 9:10 PM • nonstop
$637
American Airlines
Jul 03 - Jul 10, Economy
DL
Philadelphia → St Louis
8h 47m
12:40 PM - 6:07 PM • 1 stop
DL
Philadelphia → St Louis
10h 1m
6:58 PM - 12:59 AM • 1 stop
$646
Delta Airlines
Jul 03 - Jul 10, Economy
AS
Philadelphia → St Louis
45h 31m
4:26 PM - 6:57 PM • 1 stop
F9
Philadelphia → St Louis
10h 29m
4:09 PM - 11:38 PM • 1 stop
$936
Alaska 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 6:05 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 F9 : USD 496
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 9:5900 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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