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Philadelphia International Airport to St. Louis flight
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Cheap Flights from Philadelphia International Airport to St. Louis

Search for flights from Philadelphia International Airport to St. Louis. Find affordable one-way or round-trip flights.

  • One way
  • Round-trip
sortSort by: Lowest Price
  • Sort by: Lowest Price
  • Sort by: Earliest Flight
      • PHL06:30
        2h 27m
        Direct
        STL07:57
        Philadelphia - St. Louis|Wed, May 22|Frontier Airlines
        US$28US$63
        55% OFF
        55% OFF
        US$63US$28
      • PHL06:30
        2h 27m
        Direct
        STL07:57
        Philadelphia - St. Louis|Wed, May 29|Frontier Airlines
        US$37US$63
        41% OFF
        41% OFF
        US$63US$37
      • PHL06:30
        2h 27m
        Direct
        STL07:57
        Philadelphia - St. Louis|Sat, May 25|Frontier Airlines
        US$37US$63
        41% OFF
        41% OFF
        US$63US$37
      • PHL06:30
        2h 27m
        Direct
        STL07:57
        Philadelphia - St. Louis|Sat, Jun 1|Frontier Airlines
        US$38
        US$38
      • PHL20:19
        2h 27m
        Direct
        STL21:46
        Philadelphia - St. Louis|Wed, Jun 19|Frontier Airlines
        US$38
        US$38
      • PHL09:17
        2h 30m
        Direct
        STL10:47
        Philadelphia - St. Louis|Sat, Jun 8|Frontier Airlines
        US$38
        US$38
      • PHL20:19
        2h 27m
        Direct
        STL21:46
        Philadelphia - St. Louis|Wed, Jun 5|Frontier Airlines
        US$41
        US$41
      • PHL12:51
        2h 27m
        Direct
        STL14:18
        Philadelphia - St. Louis|Sat, Jun 29|Frontier Airlines
        US$41
        US$41
      • PHL20:19
        2h 27m
        Direct
        STL21:46
        Philadelphia - St. Louis|Mon, Jun 10|Frontier Airlines
        US$48
        US$48
      • PHL20:19
        2h 27m
        Direct
        STL21:46
        Philadelphia - St. Louis|Mon, Jun 17|Frontier Airlines
        US$48
        US$48
      • PHL13:00
        3h 5m
        Direct
        STL14:00
        Philadelphia - St. Louis|Fri, May 3|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Philadelphia International Airport to St. Louis

View airlines operating flights from Philadelphia International Airport to St. Louis. Compare prices and find the airline that meets your travel needs to enjoy a comfortable journey.

Frontier Airlines
From US$28
American Airlines
From US$84
Delta Air Lines
From US$87
Spirit Airlines
From US$87
Sun Country Airlines
From US$93
United Airlines
From US$123
Southwest Airlines
From US$194
Jetblue Airways
From US$215
Alaska Airlines
From US$246
ANA airlines
Find more flights and airlines

There are 1 airport(s) in St. Louis. Discover the top routes now!

Discover different airports in St. Louis. Find the best flight and transfer option, and plan your trip accordingly.

  • 21.12 km from downtown St. Louis
    St. Louis Lambert International Airport
    Tickets From
    US$28
Flight Schedule from Philadelphia International Airport to St. Louis

Check on the flight schedule from Philadelphia International Airport to St. Louis. Find the flight that matches your travel plan.

Flight info.
Departure
Arrival
Weekly Schedule

  1. F91807

    Frontier Airlines

    07:05

    PHL

    2.8h

    09:51

    MCO

    SMTWTFS
    Search

  2. F91631

    Frontier Airlines

    05:30

    MCO

    2.7h

    07:13

    STL

    SMTWTFS

  3. F93265

    Frontier Airlines

    13:00

    PHL

    4.2h

    15:12

    DEN

    SMTWTFS
    Search

  4. F93302

    Frontier Airlines

    06:26

    DEN

    2.2h

    09:37

    STL

    -M-W--S

  5. F93265

    Frontier Airlines

    13:00

    PHL

    4.2h

    15:12

    DEN

    SMTWTFS
    Search

  6. F9006

    Frontier Airlines

    07:00

    DEN

    2.1h

    10:05

    STL

    S-T-TF-

  7. NK321

    Spirit Airlines

    14:34

    PHL

    2.7h

    17:17

    MCO

    SMTWTFS
    Search

  8. F91631

    Frontier Airlines

    05:30

    MCO

    2.7h

    07:13

    STL

    SMTWTFS

  9. F92505

    Frontier Airlines

    14:45

    PHL

    2.9h

    17:39

    MCO

    SMTWTFS
    Search

  10. F91631

    Frontier Airlines

    05:30

    MCO

    2.7h

    07:13

    STL

    SMTWTFS

  11. AA2571

    American Airlines

    19:06

    PHL

    2.6h

    Direct

    20:43

    STL

    SMTWTFS
    Search

  12. F93855

    Frontier Airlines

    19:54

    PHL

    3.0h

    22:56

    MCO

    SMTWTFS
    Search

  13. F91631

    Frontier Airlines

    05:30

    MCO

    2.7h

    07:13

    STL

    SMTWTFS
Find more flights and airlines

Flight Info of Flights from Philadelphia International Airport to St. Louis

Cheapest round-trip ticket price

$67

Cheapest nonstop flight price

$28

Off-season for travel

May

Peak season for travel

October

FAQs for Philadelphia International Airport to St. Louis Flights

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20km. It takes about 40 minutes by taxi.

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