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Philadelphia International Airport to St. Louis Lambert International Airport flight

Explore the cheapest one-way and round-trip flights from Philadelphia International Airport to St. Louis Lambert International Airport over the next 90 days, with one-way fares from DKK 511 and round-trip from DKK 1,529. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        PHL 22:00
        2h 43m
        Nonstop
        STL 23:43
        Philadelphia - St. Louis | Fri, Oct 30 | American Airlines
        STL 06:02
        2h 18m
        Nonstop
        PHL 09:20
        St. Louis - Philadelphia | Mon, Nov 2 | American Airlines
        DKK 1,936 DKK 3,356
        42% off
        42% off
        DKK 3,356 DKK 1,936
      • PHL 17:45
        6h 28m
        1 stop
        STL 23:13
        Philadelphia - St. Louis | Sun, Oct 11 | Frontier Airlines
        STL 16:30
        6h 17m
        1 stop
        PHL 23:47
        St. Louis - Philadelphia | Fri, Oct 16 | Frontier Airlines
        DKK 1,529 DKK 3,356
        54% off
        54% off
        DKK 3,356 DKK 1,529
      • PHL 06:00
        12h 54m
        1 stop
        STL 17:54
        Philadelphia - St. Louis | Fri, Oct 30 | Frontier Airlines
        STL 20:10
        2h 5m
        Nonstop
        PHL 23:15
        St. Louis - Philadelphia | Mon, Nov 2 |
        DKK 1,978 DKK 3,356
        41% off
        41% off
        DKK 3,356 DKK 1,978
      • PHL 18:13
        6h 41m
        1 stop
        STL 23:54
        Philadelphia - St. Louis | Fri, Oct 30 | Delta Air Lines
        STL 12:00
        5h 18m
        1 stop
        PHL 18:18
        St. Louis - Philadelphia | Mon, Nov 2 | Delta Air Lines
        DKK 2,027
        40% off
        DKK 3,356 DKK 2,027
      • PHL 06:10
        4h 39m
        1 stop
        STL 09:49
        Philadelphia - St. Louis | Tue, Oct 13 | Delta Air Lines
        STL 16:30
        6h 13m
        1 stop
        PHL 23:43
        St. Louis - Philadelphia | Fri, Oct 16 | Frontier Airlines
        DKK 2,126
        37% off
        DKK 3,356 DKK 2,126
      • PHL 11:20
        5h 23m
        1 stop
        STL 15:43
        Philadelphia - St. Louis | Fri, Oct 30 | United Airlines
        STL 10:40
        2h 10m
        Nonstop
        PHL 13:50
        St. Louis - Philadelphia | Mon, Nov 2 |
        DKK 2,272
        32% off
        DKK 3,356 DKK 2,272
      • PHL 15:23
        2h 45m
        Nonstop
        STL 17:08
        Philadelphia - St. Louis | Tue, Oct 13 | American Airlines
        STL 16:30
        6h 13m
        1 stop
        PHL 23:43
        St. Louis - Philadelphia | Fri, Oct 16 | Frontier Airlines
        DKK 2,300
        31% off
        DKK 3,356 DKK 2,300
      • PHL 06:10
        4h 34m
        1 stop
        STL 09:44
        Philadelphia - St. Louis | Sun, Oct 11 | Delta Air Lines
        STL 16:30
        6h 17m
        1 stop
        PHL 23:47
        St. Louis - Philadelphia | Fri, Oct 16 | Frontier Airlines
        DKK 2,348
        30% off
        DKK 3,356 DKK 2,348
      • PHL 09:34
        5h 43m
        1 stop
        STL 14:17
        Philadelphia - St. Louis | Tue, Oct 13 | United Airlines
        STL 16:30
        6h 13m
        1 stop
        PHL 23:43
        St. Louis - Philadelphia | Fri, Oct 16 | Frontier Airlines
        DKK 2,353
        30% off
        DKK 3,356 DKK 2,353
      • PHL 15:22
        2h 38m
        Nonstop
        STL 17:00
        Philadelphia - St. Louis | Sun, Oct 11 | American Airlines
        STL 16:30
        6h 17m
        1 stop
        PHL 23:47
        St. Louis - Philadelphia | Fri, Oct 16 | Frontier Airlines
        DKK 2,437
        27% off
        DKK 3,356 DKK 2,437
      • PHL 06:10
        5h 38m
        1 stop
        STL 10:48
        Philadelphia - St. Louis | Sun, Oct 11 | United Airlines
        STL 16:30
        6h 17m
        1 stop
        PHL 23:47
        St. Louis - Philadelphia | Fri, Oct 16 | Frontier Airlines
        DKK 2,584
        23% off
        DKK 3,356 DKK 2,584
      • PHL 13:00
        17h 25m
        1 stop
        STL 14:00
        Philadelphia - St. Louis | Sun, Sep 27 | Normal Airline
        STL 15:00
        6h
        Nonstop
        PHL 16:00
        St. Louis - Philadelphia | Tue, Sep 29 | Normal Airline
        More cheap flights
        More cheap flights
      • PHL 17:22
        25h 18m
        1 stop
        STL 17:40
        Philadelphia - St. Louis | Sun, Nov 8 | Frontier Airlines
        DKK 511 DKK 1,156
        56% off
        56% off
        DKK 1,156 DKK 511
      • PHL 12:43
        21h 57m
        1 stop
        STL 09:40
        Philadelphia - St. Louis | Sun, Nov 15 | Frontier Airlines
        DKK 544 DKK 1,156
        53% off
        53% off
        DKK 1,156 DKK 544
      • PHL 12:40
        25h 30m
        1 stop
        STL 13:10
        Philadelphia - St. Louis | Tue, Oct 6 | Frontier Airlines
        DKK 594 DKK 1,156
        49% off
        49% off
        DKK 1,156 DKK 594
      • PHL 12:40
        8h 18m
        1 stop
        STL 19:58
        Philadelphia - St. Louis | Mon, Oct 5 | Frontier Airlines
        DKK 649
        44% off
        DKK 1,156 DKK 649
      • PHL 12:40
        25h 30m
        1 stop
        STL 13:10
        Philadelphia - St. Louis | Fri, Oct 9 | Frontier Airlines
        DKK 717
        38% off
        DKK 1,156 DKK 717
      • PHL 12:35
        6h 5m
        1 stop
        STL 17:40
        Philadelphia - St. Louis | Sat, Nov 14 | Frontier Airlines
        DKK 730
        37% off
        DKK 1,156 DKK 730
      • PHL 15:30
        26h 4m
        1 stop
        STL 16:34
        Philadelphia - St. Louis | Thu, Oct 8 | Frontier Airlines
        DKK 765
        34% off
        DKK 1,156 DKK 765
      • PHL 17:57
        26h 42m
        1 stop
        STL 19:39
        Philadelphia - St. Louis | Mon, Nov 9 | Frontier Airlines
        DKK 815
        28% off
        DKK 1,156 DKK 815
      • PHL 17:45
        6h 28m
        1 stop
        STL 23:13
        Philadelphia - St. Louis | Thu, Oct 29 | Frontier Airlines
        DKK 840
        27% off
        DKK 1,156 DKK 840
      • PHL 15:30
        26h 4m
        1 stop
        STL 16:34
        Philadelphia - St. Louis | Thu, Oct 1 | Frontier Airlines
        DKK 887
        23% off
        DKK 1,156 DKK 887
      • PHL 17:45
        23h 49m
        1 stop
        STL 16:34
        Philadelphia - St. Louis | Fri, Oct 23 | Frontier Airlines
        DKK 890
        23% off
        DKK 1,156 DKK 890
      • PHL 13:00
        17h 25m
        1 stop
        STL 14:00
        Philadelphia - St. Louis | Sun, Sep 27 | Normal Airline
        More cheap flights
        More cheap flights

Displayed flight fares from Philadelphia International Airport to St. Louis Lambert International Airport are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Philadelphia International Airport to St. Louis Lambert International Airport?

The cheapest airline flying from Philadelphia International Airport to St. Louis Lambert International Airport is Frontier Airlines (from DKK 260) among 5 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From DKK 260
American Airlines
From DKK 909
Delta Air Lines
From DKK 934
United Airlines
From DKK 1,209
Hahn Air
From DKK 2,047

Find more flights and airlines

What is the flight schedule from Philadelphia International Airport to St. Louis Lambert International Airport?

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA1739

    Philadelphia International Airport

    08:54

    PHL

    2h 35m

    10:29

    STL

    S M T W T F S
    Search

  2. F91101

    Philadelphia International Airport

    12:40

    PHL

    2h 21m

    Nonstop

    15:01

    ATL

    S M T W T F S
    Search

  3. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Nonstop

    13:10

    STL

    S - T - T - -

  4. DL2279

    Philadelphia International Airport

    14:12

    PHL

    2h 15m

    Nonstop

    16:27

    ATL

    S M T W T F S
    Search

  5. DL2833

    Hartsfield–Jackson Atlanta International Airport

    20:05

    ATL

    1h 44m

    Nonstop

    20:49

    STL

    S M T W T F S

  6. F92415

    Philadelphia International Airport

    05:15

    PHL

    2h 43m

    Nonstop

    07:58

    MCO

    S - - W T F S
    Search

  7. F92635

    Orlando International Airport

    15:00

    MCO

    2h 34m

    Nonstop

    16:34

    STL

    S - - W T - S

  8. F92297

    Philadelphia International Airport

    08:41

    PHL

    2h 25m

    Nonstop

    11:06

    ATL

    S M T W T F S
    Search

  9. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Nonstop

    13:10

    STL

    S - T - T - -

  10. F92297

    Philadelphia International Airport

    08:41

    PHL

    2h 25m

    Nonstop

    11:06

    ATL

    S M T W T F S
    Search

  11. DL1403

    Hartsfield–Jackson Atlanta International Airport

    22:55

    ATL

    1h 44m

    Nonstop

    23:39

    STL

    S M T W T F S

  12. F91147

    Philadelphia International Airport

    17:32

    PHL

    2h 28m

    Nonstop

    20:00

    ATL

    S M T W T F S
    Search

  13. F94473

    Hartsfield–Jackson Atlanta International Airport

    12:25

    ATL

    1h 45m

    Nonstop

    13:10

    STL

    S - T - T - -

  14. F92505

    Philadelphia International Airport

    17:45

    PHL

    2h 46m

    Nonstop

    20:31

    MCO

    S M T W T F S
    Search

  15. F92635

    Orlando International Airport

    15:00

    MCO

    2h 34m

    Nonstop

    16:34

    STL

    S - - W T - S

  16. F94173

    Philadelphia International Airport

    15:30

    PHL

    2h 44m

    Nonstop

    18:14

    MCO

    S M T W T F S
    Search

  17. F92635

    Orlando International Airport

    15:00

    MCO

    2h 34m

    Nonstop

    16:34

    STL

    S - - W T - S
Find more flights and airlines

About Philadelphia International Airport and St. Louis Lambert International Airport

Learn about Philadelphia International Airport (PHL) and St. Louis Lambert International Airport (STL) — including location, terminals, transportation, and travel tips.

Flight distance 1,307.06 km
Cheapest one-way ticket price DKK 511
Cheapest return ticket price DKK 1,529

FAQs for Philadelphia International Airport to St. Louis Lambert International Airport Flights

  • How long is the flight from Philadelphia International Airport to St. Louis Lambert International Airport?

    Philadelphia International Airport to St. Louis Lambert International Airport takes about 2 hours 1 minute on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 3 daily flights from Philadelphia International Airport (PHL) to St. Louis Lambert International Airport (STL).
  • The earliest flight from Philadelphia International Airport to St. Louis Lambert International Airport departs at 06:20, and the last departs at 20:06, with about 9 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Philadelphia International Airport (PHL) to St. Louis Lambert International Airport (STL) is quite popular. Without considering departure times or holidays, tickets cost around DKK 1,832 in October, the most expensive month to book this route.
  • The earliest flight departs from Philadelphia International Airport at 08:35 and arrives in St. Louis Lambert International Airport at 10:14.
  • The latest flight departs from Philadelphia International Airport at 18:40 and arrives in St. Louis Lambert International Airport at 20:21.
    • The distance from St. Louis Lambert International Airport to downtown is about 20 km, by taxi about 40 minutes.
  • American Airlines is a very popular airline operating an average of 1093 flights per month.
  • One-way flights from Philadelphia International Airport to St. Louis Lambert International Airport currently start from DKK 511, and round-trip fares start from DKK 1,529. The current lowest fare is a Frontier Airlines flight departing on Sun, Nov 8; prices may vary depending on availability.
  • Yes. American Airlines operate direct flights from Philadelphia International Airport to St. Louis Lambert International Airport, with an average flight time of 1 hour 58 minutes, and around 31 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Philadelphia International Airport to St. Louis Lambert International Airport is DKK 1,456. Prices may vary depending on the departure date, airline, and availability.
  • Philadelphia International Airport to St. Louis Lambert International Airport operates around 31 weekly flights, mainly by American Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Philadelphia International Airport and St. Louis Lambert International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Popular Destinations

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.