Cheap flights from Philadelphia to St. Louis

Round-trip
Economy
Philadelphia (PHL)
St. Louis (STL)
Thu 12/24
Thu 12/31
Any month
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Flight information for Philadelphia to St. Louis
(PHL to STL)

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to St. Louis
Best Price Found $132 The best flight deal from Philadelphia to St. Louis found on momondo in the last 72 hours is $132
Fastest flight time 2h 31m The fastest flight from Philadelphia to St. Louis takes 2h 31m.
Direct flights Fr and Sa Direct flights go from Philadelphia to St. Louis on Friday and Saturday. Airlines offering direct flights are: Southwest, American Airlines and Qatar Airways.
Airports in St. Louis 1 airport There is 1 airport near St. Louis: Lambert-St Louis (STL)

How to get the cheapest flight ticket from Philadelphia to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
August
The cheapest time of year to fly to St. Louis from Philadelphia is August. Most expensive is November
What is the cheapest day to fly to St. Louis?
Saturday
The cheapest day of the week is typically Saturday. The most expensive is typically Monday
When is the cheapest time to fly to St. Louis?
in the evening
Philadelphia to St. Louis flights are approximately 9% more expensive in the morning than in the evening
What is the cheapest airline that flies to St. Louis?
Sun Country Air
Sun Country Air, Frontier, and Delta are the most popular carriers operating from Philadelphia to St. Louis
What is the cheapest route?
Philadelphia - Lambert-St Louis
Fly from Philadelphia to Lambert-St Louis for the best Philadelphia - St. Louis flight prices
PHL
Philadelphia
STL
Lambert-St Louis
When is the cheapest time to book a flight to St. Louis?
53 days before
The cheapest time to buy a flight from Philadelphia to St. Louis is approximately 53 days to departure
60
Days before departure
0

Easily compare round-trip flights from Philadelphia to St. Louis

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Philadelphia to St. Louis by changing tabs
Cheapest
Best
Quickest
Frontier
Dec 21
PHL
Philadelphia
8h 38m
1 stop
STL
Lambert-St Louis
Jan 4
STL
Lambert-St Louis
17h 05m
1 stop
PHL
Philadelphia
Multiple Airlines
Dec 10
PHL
Philadelphia
6h 27m
1 stop
STL
Lambert-St Louis
Dec 12
STL
Lambert-St Louis
29h 08m
1 stop
PHL
Philadelphia
Frontier
Dec 10
PHL
Philadelphia
14h 12m
1 stop
STL
Lambert-St Louis
Dec 13
STL
Lambert-St Louis
15h 18m
1 stop
PHL
Philadelphia

Find the cheapest one-way flights from Philadelphia to St. Louis

If you're looking for one-way flights from Philadelphia to St. Louis, view some of our deals below provided by Frontier
Cheapest
Best
Quickest
Frontier
Dec 6
PHL
Philadelphia
6h 35m
1 stop
STL
Lambert-St Louis
Multiple Airlines
Dec 4
PHL
Philadelphia
9h 31m
1 stop
STL
Lambert-St Louis
Frontier
Dec 5
PHL
Philadelphia
16h 28m
1 stop
STL
Lambert-St Louis

Which airlines flying from Philadelphia to Lambert-St Louis have COVID-19 safety policies in place?

Southwest and Delta have implemented additional safety measures to accommodate travelers. Airlines flying from Philadelphia to Lambert-St Louis are working to protect travelers. Some of these new policies include temperature checks, pre-flight testing, sanitization of key touchpoints, as well as mask requirements when onboard. Some airlines have even implemented socially distanced seating for a limited time. Policies will vary by airline.

Are airlines flying from Philadelphia to Lambert-St Louis offering flexible cancellation due to COVID-19?

Due to the global impact of COVID-19, some of our airline partners operating flights from Philadelphia to Lambert-St Louis, such as American Airlines, Frontier, and Delta may have put in place flexible cancellation policies. Use our site to search for all of the airlines offering this flexibility to you.


Alternative routes for Philadelphia to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Philadelphia to Kansas City Flights
Fastest flight time
2h 58m
Cheapest price
$68
Pittsburgh to St. Louis Flights
Fastest flight time
3h 57m
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Harrisburg to St. Louis Flights
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4h 26m
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$214
Harrisburg to Kansas City Flights
Fastest flight time
6h 59m
Cheapest price
$223
Pittsburgh to Kansas City Flights
Fastest flight time
6h 22m
Cheapest price
$247
View more

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