Cheap Flight Tickets from St Louis (STL) to Philadelphia (PHL), Starting at $529

Good to Know: Cheapest and Fastest STL - PHL Flights

Useful information for finding best airline tickets from Lambert St Louis International to Philadelphia International on your next trip.

Cheapest Round Trip Flight

$548

WN Southwest Airlines • 1 stop • 5h 45m

Nov 25 – Nov 29

The cheapest round trip flight from St Louis to Philadelphia (STL-PHL-STL) is currently $548

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Cheapest Direct Flight

$529

WN Southwest Airlines • nonstop • 3h 30m

Nov 25

The cheapest nonstop flight from St Louis to Philadelphia (STL-PHL) is currently $529

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Fastest Flight

3h 30m

The fastest nonstop flight from St Louis to Philadelphia (STL-PHL) takes 3h 30m

Latest Flight Deals from St Louis (STL) to Philadelphia (PHL)

Compare and book low fare round-trip air tickets from St Louis to Philadelphia. Ideal for travelers with confirmed return itineraries.

Nov 25 - Nov 29, Economy
WN
St Louis → Philadelphia
5h 45m
1:40 PM - 6:25 PM • 1 stop
WN
St Louis → Philadelphia
7h 5m
8:55 PM - 12:20 AM • 1 stop
$548
Southwest Airlines
Nov 25 - Nov 29, Economy
WN
St Louis → Philadelphia
15h 15m
2:20 PM - 12:35 AM • 1 stop
WN
St Louis → Philadelphia
3h 55m
5:40 AM - 7:15 AM • nonstop
$629
Southwest Airlines
Nov 25 - Nov 29, Economy
WN
St Louis → Philadelphia
17h 30m
5:30 AM - 5:20 PM • 2 stops
WN
St Louis → Philadelphia
3h 55m
5:40 AM - 7:15 AM • nonstop
$639
Southwest Airlines
Nov 25 - Nov 29, Economy
WN
St Louis → Philadelphia
17h 20m
8:20 AM - 8:00 PM • 1 stop
WN
St Louis → Philadelphia
3h 55m
5:40 AM - 7:15 AM • nonstop
$644
Southwest Airlines
Nov 25 - Nov 29, Economy
WN
St Louis → Philadelphia
12h 30m
3:30 PM - 12:20 AM • 1 stop
WN
St Louis → Philadelphia
7h 20m
5:15 AM - 8:55 AM • 1 stop
$648
Southwest Airlines
Nov 25 - Nov 29, Economy
DL
St Louis → Philadelphia
8h 35m
10:20 AM - 4:35 PM • 1 stop
DL
St Louis → Philadelphia
7h 5m
6:00 AM - 9:25 AM • 1 stop
$673
Delta Airlines

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

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

FAQs on St Louis to Philadelphia Flights

What are the airports in St Louis?
STL
What’s the most popular airline flying from STL to PHL?
The most popular airline flying from St Louis to Philadelphia are
Can I fly from STL to PHL non-stop?
Yes, you can fly STL to PHL non-stop on
Which airlines fly nonstop between St Louis and Philadelphia?
The non-stop flights between St Louis and Philadelphia are .
What’s the earliest departure time from STL to PHL Airport?
The earliest flight leaves STL at 5:30 am and lands in PHL - Philadelphia International
What are the airports in Philadelphia?
PHL
Can I make changes to my St Louis to Philadelphia 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 STL to PHL?
Read the fare rules of the St Louis to Philadelphia 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 St Louis and Philadelphia?
operate flights between St Louis and Philadelphia
How long does a flight from St Louis to Philadelphia take?
It takes approximately 2 hour to fly non-stop from STL to PHL, which is 813.49 miles by air.
Which airlines provide the cheapest flights from St Louis (STL) to Philadelphia (PHL) ?
In the past couple of days, the cheapest tickets to PHL from STL were found on WN : USD 548
Do I need a passport to fly between STL and PHL?
No
What’s the latest departure time from STL to PHL ?
The last flight leaves STL at 8:00 pm

St Louis (STL) to Philadelphia (PHL): Airport Information

Origin Airport Lambert St Louis International , St Louis, US
Destination Airport Philadelphia International , Philadelphia, US
Distance 813 miles

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