Cheap flights from Philadelphia to St. Louis

Round-trip
1 adult
Economy
From?
To?
Mon 6/21
Mon 6/28

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$189The best flight deal from Philadelphia to St. Louis found on momondo in the last 72 hours is $189
Fastest flight time2h 29mThe fastest flight from Philadelphia to St. Louis takes 2h 29m
Direct flightsNoneThere are no direct flights from Philadelphia to St. Louis. Popular non-direct route for this connection is Philadelphia Airport - Lambert-St Louis Airport.
Airports in St. Louis1 airportThere 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 from Philadelphia 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 depart Philadelphia for 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 from Philadelphia to St. Louis?

in the evening

Philadelphia to St. Louis flights are approximately 16% more expensive at noon than in the evening

What is the cheapest airline that flies to St. Louis from Philadelphia?

Sun Country Air

American Airlines, Delta, and Frontier are the most popular carriers operating from Philadelphia to St. Louis

What is the cheapest Philadelphia to St. Louis flight route?

Philadelphia - Lambert-St Louis

Fly from Philadelphia to Lambert-St Louis for the best Philadelphia - St. Louis flight prices

How far in advance should you book Philadelphia to St. Louis flights?

52 days before

The cheapest time to buy a flight from Philadelphia to St. Louis is approximately 52 days to departure


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
American Airlines
Oct 23
PHL9:30 amPhiladelphia
2h 29m
STL11:59 amLambert-St Louis
Oct 25
STL5:19 amLambert-St Louis
2h 11m
PHL7:30 amPhiladelphia
Multiple Airlines
Jun 22
PHL1:12 pmPhiladelphia
17h 28m
2 stops
STL6:40 amLambert-St Louis
Jun 23
STL11:26 amLambert-St Louis
24h 24m
1 stop
PHL11:50 amPhiladelphia
Spirit Airlines
Jun 22
PHL3:05 pmPhiladelphia
15h 17m
1 stop
STL6:22 amLambert-St Louis
Jun 24
STL3:00 amLambert-St Louis
11h 04m
1 stop
PHL2:04 pmPhiladelphia
American Airlines
Oct 23
PHL7:45 amPhiladelphia
4h 46m
1 stop
STL12:31 pmLambert-St Louis
Oct 25
STL5:19 amLambert-St Louis
2h 11m
PHL7:30 amPhiladelphia
American Airlines
Sep 16
PHL9:56 amPhiladelphia
6h 42m
1 stop
STL4:38 pmLambert-St Louis
Sep 19
STL5:02 amLambert-St Louis
4h 33m
1 stop
PHL9:35 amPhiladelphia
Spirit Airlines
Jun 29
PHL3:05 pmPhiladelphia
15h 17m
1 stop
STL6:22 amLambert-St Louis
Jul 4
STL4:15 amLambert-St Louis
6h 21m
1 stop
PHL10:36 amPhiladelphia

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 American Airlines and Spirit Airlines
Spirit Airlines
Jun 28
PHL2:05 pmPhiladelphia
16h 17m
1 stop
STL6:22 amLambert-St Louis
American Airlines
Sep 26
PHL5:00 amPhiladelphia
2h 31m
STL7:31 amLambert-St Louis
Multiple Airlines
Jun 28
PHL4:05 pmPhiladelphia
13h 41m
1 stop
STL5:46 amLambert-St Louis

Best airlines flying from Philadelphia to St. Louis

Compare and see reviews for airlines that fly from Philadelphia to St. Louis with momondo
AirlineRatingFree CancellationPrice
Sun Country Air
PriceFrom $81
Free Cancellation
Rating
8.0
8.6

Boarding

7.6

Comfort

8.6

Crew

7.4

Entertainment

7.5

Food

Reviews

Pros: Quick boarding. Inexpensive ticket. Direct flight.

Cons: Crew walked thru cabin at least 5 times collecting garbage, but could not hand out sealed snack or sealed water. People sat should-to-shoulder - No buffer space, but asked to leave the plane with 6 foot intervals???? This airline picks and chooses their Covid precautions. Quick and inexpensive flight, if you don’t mind the rest.

1 / 3
Frontier
PriceFrom $106
Free Cancellation
Rating
7.5
8.0

Boarding

7.0

Comfort

8.0

Crew

6.7

Entertainment

7.0

Food

Reviews

Pros: Quick flight, attentive crew only about 30% full

Cons: Hard seats

1 / 10
Delta
PriceFrom $107
Free Cancellation
Rating
8.1
8.3

Boarding

8.4

Comfort

8.3

Crew

7.9

Entertainment

8.1

Food

Reviews

Cons: Wouldn't let us on the flight when there was plenty of time to get there. Manager was arrogant and slow - didn't care. Poor policies at that airport.

1 / 10
United Airlines
PriceFrom $147
Free Cancellation
Rating
6.8
7.2

Boarding

6.6

Comfort

7.5

Crew

6.6

Entertainment

6.1

Food

Reviews

Cons: Sarasota ticketing agent was not very nice at all 😟 Houston Gate agent was not nice either. We were treated like we were stupid for asking questions. I hope it’s not racism issues. I wished I had taken their names.

1 / 10
American Airlines
PriceFrom $245
Free Cancellation
Rating
7.2
7.5

Boarding

7.1

Comfort

7.9

Crew

7.1

Entertainment

6.8

Food

Reviews

Pros: Nothing

Cons: Not charging me 100 dollars For a luggage that was 56 pounds

1 / 10
Southwest
PriceFrom $283
Free Cancellation
Rating
8.4
8.6

Boarding

8.5

Comfort

8.8

Crew

7.6

Entertainment

7.8

Food

Reviews

Pros: The plane was new and the seats were nice.

1 / 10

  • 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
Pittsburgh to St. Louis Flights
Fastest flight time3h 45m
Cheapest price$183
Philadelphia to Kansas City Flights
Fastest flight time2h 55m
Cheapest price$184
Pittsburgh to Kansas City Flights
Fastest flight time4h 33m
Cheapest price$208
Harrisburg to St. Louis Flights
Fastest flight time4h 21m
Cheapest price$283
Harrisburg to Kansas City Flights
Fastest flight time4h 38m
Cheapest price$350