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St. Louis Lambert International Airport to Philadelphia International Airport flight

Explore the cheapest one-way and round-trip flights from St. Louis Lambert International Airport to Philadelphia International Airport over the next 90 days, with one-way fares from $49 and round-trip from $144. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      STL 6:02 AM
      2h 15m
      Nonstop
      PHL 9:17 AM
      St. Louis - Philadelphia | Tue, Dec 1 | American Airlines
      PHL 10:55 AM
      2h 48m
      Nonstop
      STL 12:43 PM
      Philadelphia - St. Louis | Wed, Dec 2 | American Airlines
      $280 $405
      31% off
      31% off
      $405 $280
    • STL 6:02 AM
      2h 15m
      Nonstop
      PHL 9:17 AM
      St. Louis - Philadelphia | Thu, Nov 26 | American Airlines
      PHL 6:40 PM
      2h 53m
      Nonstop
      STL 8:33 PM
      Philadelphia - St. Louis | Tue, Dec 1 | American Airlines
      $280 $405
      31% off
      31% off
      $405 $280
    • STL 6:44 PM
      11h 27m
      1 stop
      PHL 7:11 AM
      St. Louis - Philadelphia | Sat, Nov 7 | Frontier Airlines
      PHL 12:36 PM
      6h 6m
      1 stop
      STL 5:42 PM
      Philadelphia - St. Louis | Thu, Nov 12 | Frontier Airlines
      $144 $405
      64% off
      64% off
      $405 $144
    • STL 6:44 PM
      11h 37m
      1 stop
      PHL 7:21 AM
      St. Louis - Philadelphia | Thu, Nov 5 | Frontier Airlines
      PHL 8:30 AM
      10h 10m
      1 stop
      STL 5:40 PM
      Philadelphia - St. Louis | Sat, Nov 7 | Frontier Airlines
      $147
      64% off
      $405 $147
    • STL 6:44 PM
      11h 37m
      1 stop
      PHL 7:21 AM
      St. Louis - Philadelphia | Mon, Nov 2 | Frontier Airlines
      PHL 12:35 PM
      6h 5m
      1 stop
      STL 5:40 PM
      Philadelphia - St. Louis | Thu, Nov 5 | Frontier Airlines
      $153
      62% off
      $405 $153
    • STL 6:34 PM
      27h 32m
      1 stop
      PHL 11:06 PM
      St. Louis - Philadelphia | Mon, Nov 16 | Frontier Airlines
      PHL 5:14 PM
      25h 28m
      1 stop
      STL 5:42 PM
      Philadelphia - St. Louis | Fri, Nov 20 | Frontier Airlines
      $171
      57% off
      $405 $171
    • STL 12:02 PM
      10h 3m
      1 stop
      PHL 11:05 PM
      St. Louis - Philadelphia | Sat, Dec 12 | Frontier Airlines
      PHL 4:26 PM
      8h 46m
      1 stop
      STL 12:12 AM
      Philadelphia - St. Louis | Fri, Dec 18 | Frontier Airlines
      $184
      55% off
      $405 $184
    • STL 4:26 PM
      6h 16m
      1 stop
      PHL 11:42 PM
      St. Louis - Philadelphia | Tue, Nov 3 | Frontier Airlines
      PHL 12:35 PM
      6h 5m
      1 stop
      STL 5:40 PM
      Philadelphia - St. Louis | Thu, Nov 5 | Frontier Airlines
      $194
      52% off
      $405 $194
    • STL 6:34 PM
      11h 47m
      1 stop
      PHL 7:21 AM
      St. Louis - Philadelphia | Thu, Nov 19 | Frontier Airlines
      PHL 4:39 PM
      8h 20m
      1 stop
      STL 11:59 PM
      Philadelphia - St. Louis | Thu, Nov 26 | Frontier Airlines
      $195
      52% off
      $405 $195
    • STL 1:00 PM
      17h 25m
      1 stop
      PHL 2:00 PM
      St. Louis - Philadelphia | Mon, Nov 2 | Normal Airline
      PHL 3:00 PM
      6h
      Nonstop
      STL 4:00 PM
      Philadelphia - St. Louis | Wed, Nov 4 | Normal Airline
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    • Cheapest
      STL 6:44 PM
      11h 27m
      1 stop
      PHL 7:11 AM
      St. Louis - Philadelphia | Sat, Nov 14 | Frontier Airlines
      $49 $157
      69% off
      69% off
      $157 $49
    • STL 7:18 PM
      27h 30m
      1 stop
      PHL 11:48 PM
      St. Louis - Philadelphia | Sat, Nov 14 | Delta Air Lines
      $95 $157
      39% off
      39% off
      $157 $95
    • STL 5:37 PM
      10h 34m
      1 stop
      PHL 5:11 AM
      St. Louis - Philadelphia | Fri, Dec 25 | Frontier Airlines
      $100 $157
      36% off
      36% off
      $157 $100
    • STL 5:15 PM
      11h 46m
      1 stop
      PHL 6:01 AM
      St. Louis - Philadelphia | Wed, Nov 25 | Frontier Airlines
      $120
      24% off
      $157 $120
    • STL 5:59 PM
      5h 54m
      1 stop
      PHL 12:53 AM
      St. Louis - Philadelphia | Tue, Nov 24 | Frontier Airlines
      $123
      22% off
      $157 $123
    • STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Sun, Nov 15 | American Airlines
      $129
      18% off
      $157 $129
    • STL 5:37 PM
      6h 10m
      1 stop
      PHL 12:47 AM
      St. Louis - Philadelphia | Sun, Nov 15 | Delta Air Lines
      $130
      17% off
      $157 $130
    • STL 7:13 AM
      10h 45m
      1 stop
      PHL 6:58 PM
      St. Louis - Philadelphia | Wed, Nov 25 | Delta Air Lines
      $135
      14% off
      $157 $135
    • STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Thu, Nov 12 | American Airlines
      $135
      53% off
      $288 $135
    • STL 1:00 PM
      17h 25m
      1 stop
      PHL 2:00 PM
      St. Louis - Philadelphia | Mon, Nov 2 | Normal Airline
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    • Cheapest nonstop
      STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Sun, Nov 15 | American Airlines
      $129 $157
      18% off
      18% off
      $157 $129
    • STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Thu, Nov 12 | American Airlines
      $135 $288
      53% off
      53% off
      $288 $135
    • STL 8:10 PM
      2h 5m
      Nonstop
      PHL 11:15 PM
      St. Louis - Philadelphia | Sun, Nov 15 | Hahn Air
      $136 $157
      13% off
      13% off
      $157 $136
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Sat, Nov 14 | American Airlines
      $140
      11% off
      $157 $140
    • STL 12:33 PM
      2h 20m
      Nonstop
      PHL 3:53 PM
      St. Louis - Philadelphia | Wed, Dec 30 | American Airlines
      $158
      45% off
      $288 $158
    • STL 6:02 AM
      2h 15m
      Nonstop
      PHL 9:17 AM
      St. Louis - Philadelphia | Sun, Nov 22 | American Airlines
      $161
      44% off
      $288 $161
    • STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Wed, Nov 11 | American Airlines
      $185
      73% off
      $674 $185
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Sat, Nov 14 | American Airlines
      $187
      35% off
      $288 $187
    • STL 6:00 AM
      2h 20m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Tue, Dec 22 | American Airlines
      $188
      35% off
      $288 $188
    • STL 1:00 PM
      17h 25m
      1 stop
      PHL 2:00 PM
      St. Louis - Philadelphia | Mon, Nov 2 | Normal Airline
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    • Cheapest nonstop
      STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Thu, Nov 12 | American Airlines
      $135 $356
      62% off
      62% off
      $356 $135
    • STL 12:33 PM
      2h 20m
      Nonstop
      PHL 3:53 PM
      St. Louis - Philadelphia | Wed, Dec 30 | American Airlines
      $158 $356
      56% off
      56% off
      $356 $158
    • STL 6:02 AM
      2h 15m
      Nonstop
      PHL 9:17 AM
      St. Louis - Philadelphia | Sun, Nov 22 | American Airlines
      $161 $356
      55% off
      55% off
      $356 $161
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Sat, Nov 14 | American Airlines
      $187
      47% off
      $356 $187
    • STL 6:00 AM
      2h 20m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Tue, Dec 22 | American Airlines
      $188
      47% off
      $356 $188
    • STL 6:12 AM
      2h 20m
      Nonstop
      PHL 9:32 AM
      St. Louis - Philadelphia | Mon, Dec 28 | American Airlines
      $205
      42% off
      $356 $205
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Mon, Nov 16 | American Airlines
      $232
      35% off
      $356 $232
    • STL 6:20 AM
      4h 40m
      1 stop
      PHL 12:00 PM
      St. Louis - Philadelphia | Thu, Dec 31 | Delta Air Lines
      $144
      60% off
      $356 $144
    • STL 6:20 AM
      4h 40m
      1 stop
      PHL 12:00 PM
      St. Louis - Philadelphia | Tue, Dec 29 | Delta Air Lines
      $258
      28% off
      $356 $258
    • STL 1:00 PM
      17h 25m
      1 stop
      PHL 2:00 PM
      St. Louis - Philadelphia | Mon, Nov 2 | Normal Airline
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    • Cheapest nonstop
      STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Tue, Nov 3 | American Airlines
      $314 $384
      18% off
      18% off
      $384 $314
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Sun, Nov 1 | American Airlines
      $344 $384
      10% off
      10% off
      $384 $344
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Fri, Nov 6 | American Airlines
      $345 $384
      10% off
      10% off
      $384 $345
    • STL 6:47 AM
      4h
      1 stop
      PHL 11:47 AM
      St. Louis - Philadelphia | Tue, Nov 3 | Delta Air Lines
      $320
      17% off
      $384 $320
    • STL 1:00 PM
      17h 25m
      1 stop
      PHL 2:00 PM
      St. Louis - Philadelphia | Mon, Nov 2 | Normal Airline
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    • STL 8:10 PM
      2h 5m
      Nonstop
      PHL 11:15 PM
      St. Louis - Philadelphia | Sun, Nov 15 | Hahn Air
      $136 $157
      13% off
      13% off
      $157 $136
    • STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Sun, Nov 15 | American Airlines
      $129 $157
      18% off
      18% off
      $157 $129
    • STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Thu, Nov 12 | American Airlines
      $135 $288
      53% off
      53% off
      $288 $135
    • STL 6:02 AM
      2h 15m
      Nonstop
      PHL 9:17 AM
      St. Louis - Philadelphia | Sun, Nov 22 | American Airlines
      $161
      44% off
      $288 $161
    • STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Wed, Nov 11 | American Airlines
      $185
      73% off
      $674 $185
    • STL 1:15 PM
      2h 15m
      Nonstop
      PHL 4:30 PM
      St. Louis - Philadelphia | Tue, Nov 3 | American Airlines
      $314
      53% off
      $674 $314
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Sat, Nov 14 | American Airlines
      $140
      11% off
      $157 $140
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Sat, Nov 14 | American Airlines
      $187
      35% off
      $288 $187
    • STL 6:02 AM
      2h 18m
      Nonstop
      PHL 9:20 AM
      St. Louis - Philadelphia | Mon, Nov 16 | American Airlines
      $232
      19% off
      $288 $232
    • STL 1:00 PM
      17h 25m
      1 stop
      PHL 2:00 PM
      St. Louis - Philadelphia | Mon, Nov 2 | Normal Airline
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Displayed flight fares from St. Louis to Philadelphia 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 St. Louis Lambert International Airport to Philadelphia International Airport?

The cheapest airline flying from St. Louis Lambert International Airport to Philadelphia International Airport is Frontier Airlines (from $49) among 5 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From $49
Delta Air Lines
From $95
American Airlines
From $129
Hahn Air
From $136
United Airlines
From $171

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

Check the schedule for flights from St. Louis to Philadelphia and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA4796

    St. Louis Lambert International Airport

    1:15 PM

    STL

    2h 15m

    4:30 PM

    PHL

    S M T W T F S
    Search

  2. AA4604

    St. Louis Lambert International Airport

    6:02 AM

    STL

    2h 18m

    9:20 AM

    PHL

    S M T W T F S
    Search

  3. AA3484

    St. Louis Lambert International Airport

    5:29 PM

    STL

    1h 36m

    Nonstop

    7:05 PM

    ORD

    S M T W T F S
    Search

  4. AA2548

    O'Hare Intl. Airport

    7:20 PM

    ORD

    2h 24m

    Nonstop

    10:44 PM

    PHL

    S M T W T F S

  5. UA2414

    St. Louis Lambert International Airport

    7:30 AM

    STL

    1h 30m

    Nonstop

    9:00 AM

    ORD

    S M T W T F S
    Search

  6. UA350

    O'Hare Intl. Airport

    11:07 AM

    ORD

    2h 12m

    Nonstop

    2:19 PM

    PHL

    S M T W T F S

  7. F92636

    St. Louis Lambert International Airport

    5:46 PM

    STL

    2h 25m

    Nonstop

    9:11 PM

    MCO

    S - - W T F S
    Search

  8. F93856

    Orlando Intl. Airport

    8:17 PM

    MCO

    2h 32m

    Nonstop

    10:49 PM

    PHL

    S M T W T F S

  9. AA3111

    St. Louis Lambert International Airport

    11:34 AM

    STL

    1h 25m

    Nonstop

    12:59 PM

    ORD

    S M T W T - S
    Search

  10. AA2840

    O'Hare Intl. Airport

    3:21 PM

    ORD

    2h 15m

    Nonstop

    6:36 PM

    PHL

    S M T W T F S

  11. DL543

    St. Louis Lambert International Airport

    6:08 PM

    STL

    1h 42m

    Nonstop

    8:50 PM

    ATL

    S - - W T F S
    Search

  12. DL2642

    Hartsfield–Jackson Atlanta International Airport

    10:49 PM

    ATL

    1h 57m

    Nonstop

    12:46 AM

    PHL

    S M T W T F S

  13. F92636

    St. Louis Lambert International Airport

    5:46 PM

    STL

    2h 25m

    Nonstop

    9:11 PM

    MCO

    S - - W T F S
    Search

  14. F92508

    Orlando Intl. Airport

    10:07 PM

    MCO

    2h 28m

    Nonstop

    12:35 AM

    PHL

    S M - W T F S

  15. DL1400

    St. Louis Lambert International Airport

    12:01 PM

    STL

    1h 34m

    Nonstop

    2:35 PM

    ATL

    S M T W T F S
    Search

  16. DL2065

    Hartsfield–Jackson Atlanta International Airport

    6:55 PM

    ATL

    1h 56m

    Nonstop

    8:51 PM

    PHL

    S - - W T F S

  17. DL1102

    St. Louis Lambert International Airport

    2:25 PM

    STL

    1h 35m

    Nonstop

    5:00 PM

    ATL

    S M T W T F S
    Search

  18. F91102

    Hartsfield–Jackson Atlanta International Airport

    9:20 PM

    ATL

    2h 6m

    Nonstop

    11:26 PM

    PHL

    S M T W T F S
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About St. Louis Lambert International Airport and Philadelphia International Airport

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

Flight distance 1,307.06 km
Cheapest one-way ticket price $49
Cheapest return ticket price $144

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

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

    St. Louis Lambert International Airport to Philadelphia International Airport takes about 2 hours 2 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 2 daily flights from St. Louis Lambert International Airport (STL) to Philadelphia International Airport (PHL).
  • The earliest flight from St. Louis Lambert International Airport to Philadelphia International Airport departs at 06:00, and the last departs at 20:00, with about 11 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from St. Louis Lambert International Airport (STL) to Philadelphia International Airport (PHL) is quite popular. Without considering departure times or holidays, tickets cost around $372 in October, the most expensive month to book this route.
  • The earliest flight departs from St. Louis Lambert International Airport (STL) at 06:00 and arrives in Philadelphia International Airport (PHL) at 09:18.
  • The latest flight departs from St. Louis Lambert International Airport (STL) at 17:14 and arrives in Philadelphia International Airport (PHL) at 20:25.
  • American Airlines is a very popular airline operating an average of 697 flights per month.
  • One-way flights from St. Louis Lambert International Airport to Philadelphia International Airport currently start from $49, and round-trip fares start from $144. The current lowest fare is a Frontier Airlines flight departing on Sat, Nov 14; prices may vary depending on availability.
  • Yes. American Airlines and United Airlines operate direct flights from St. Louis Lambert International Airport to Philadelphia International Airport, with an average flight time of 1 hour 53 minutes, and around 34 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 St. Louis Lambert International Airport to Philadelphia International Airport is $248. Prices may vary depending on the departure date, airline, and availability.
  • St. Louis Lambert International Airport to Philadelphia International Airport operates around 36 weekly flights, mainly by American Airlines and United Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter St. Louis Lambert International Airport and Philadelphia 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 estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.