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Flights from St. Louis to Philadelphia
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Flights from St. Louis to Philadelphia Starting at MYR 243

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • Cheapest nonstop
        STL18:05
        2h 5m
        Nonstop
        PHL21:10
        Wed, Feb 19|St. Louis - Philadelphia|Southwest Airlines
        MYR 717MYR 913
        21% OFF
        21% OFF
        MYR 913MYR 717

        Choose Southwest Airlines flights from St. Louis to Philadelphia. The one-way direct flight with Southwest Airlines departs from St. Louis Lambert International Airport on Wed, Feb 19, arriving at Philadelphia International Airport. One-way Prices start from MYR 717 including taxes and charges.

      • STL06:00
        2h 7m
        Nonstop
        PHL09:07
        Thu, Mar 20|St. Louis - Philadelphia|American Airlines
        MYR 758MYR 913
        17% OFF
        17% OFF
        MYR 913MYR 758

        Choose American Airlines flights from St. Louis to Philadelphia. The one-way direct flight with American Airlines departs from St. Louis Lambert International Airport on Thu, Mar 20, arriving at Philadelphia International Airport. One-way Prices start from MYR 758 including taxes and charges.

      • STL19:04
        8h 21m
        1 stop
        PHL04:25
        Wed, Mar 5|St. Louis - Philadelphia|Frontier Airlines
        MYR 243MYR 913
        73% OFF
        73% OFF
        MYR 913MYR 243

        Choose Frontier Airlines flights from St. Louis to Philadelphia. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Mar 5, arriving at Philadelphia International Airport. One-way Prices start from MYR 243 including taxes and charges.

      • STL17:20
        13h 10m
        1 stop
        PHL07:30
        Tue, Feb 25|St. Louis - Philadelphia|Frontier Airlines
        MYR 262
        MYR 262

        Choose Frontier Airlines flights from St. Louis to Philadelphia. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Tue, Feb 25, arriving at Philadelphia International Airport. One-way Prices start from MYR 262 including taxes and charges.

      • STL23:08
        30h 6m
        1 stop
        PHL06:14
        Thu, Feb 27|St. Louis - Philadelphia|Frontier Airlines
        MYR 264
        MYR 264

        Choose Frontier Airlines flights from St. Louis to Philadelphia. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Thu, Feb 27, arriving at Philadelphia International Airport. One-way Prices start from MYR 264 including taxes and charges.

      • STL19:04
        15h 35m
        1 stop
        PHL11:39
        Sat, Mar 1|St. Louis - Philadelphia|Frontier Airlines
        MYR 268
        MYR 268

        Choose Frontier Airlines flights from St. Louis to Philadelphia. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Mar 1, arriving at Philadelphia International Airport. One-way Prices start from MYR 268 including taxes and charges.

      • STL17:20
        13h 10m
        1 stop
        PHL07:30
        Wed, Feb 26|St. Louis - Philadelphia|Frontier Airlines
        MYR 281
        MYR 281

        Choose Frontier Airlines flights from St. Louis to Philadelphia. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Feb 26, arriving at Philadelphia International Airport. One-way Prices start from MYR 281 including taxes and charges.

      • STL17:20
        20h 58m
        1 stop
        PHL15:18
        Tue, Mar 4|St. Louis - Philadelphia|Frontier Airlines
        MYR 283
        MYR 283

        Choose Frontier Airlines flights from St. Louis to Philadelphia. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Tue, Mar 4, arriving at Philadelphia International Airport. One-way Prices start from MYR 283 including taxes and charges.

      • STL19:04
        15h 35m
        1 stop
        PHL11:39
        Sat, Feb 15|St. Louis - Philadelphia|Frontier Airlines
        MYR 285
        MYR 285

        Choose Frontier Airlines flights from St. Louis to Philadelphia. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Feb 15, arriving at Philadelphia International Airport. One-way Prices start from MYR 285 including taxes and charges.

      • STL17:20
        13h 10m
        1 stop
        PHL07:30
        Sat, Feb 22|St. Louis - Philadelphia|Frontier Airlines
        MYR 285
        MYR 285

        Choose Frontier Airlines flights from St. Louis to Philadelphia. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Feb 22, arriving at Philadelphia International Airport. One-way Prices start from MYR 285 including taxes and charges.

      • STL01:00 pm
        3h 5m
        Nonstop
        PHL02:00 pm
        Thu, Feb 20|St. Louis - Philadelphia|Southwest Airlines
        Find More Flights
        Find More Flights

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

St. Louis to Philadelphia flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. F93641

    Frontier Airlines

    13:06

    STL

    3.8h

    14:51

    LAS

    SMTWTF-
    Search

  2. F91602

    Frontier Airlines

    23:00

    LAS

    4.9h

    06:52

    PHL

    SMTWTFS

  3. F92636

    Frontier Airlines

    17:20

    STL

    2.5h

    20:51

    MCO

    SMTWTFS
    Search

  4. F93856

    Frontier Airlines

    15:18

    MCO

    2.7h

    17:59

    PHL

    SMTWTFS

  5. F92636

    Frontier Airlines

    17:20

    STL

    2.5h

    20:51

    MCO

    SMTWTFS
    Search

  6. F92014

    Frontier Airlines

    09:43

    MCO

    2.5h

    12:16

    TTN

    SMTWTFS

  7. F92636

    Frontier Airlines

    17:20

    STL

    2.5h

    20:51

    MCO

    SMTWTFS
    Search

  8. F91542

    Frontier Airlines

    05:01

    MCO

    2.5h

    07:30

    PHL

    SMTWTFS

  9. F92630

    Frontier Airlines

    17:47

    STL

    2.5h

    21:19

    MCO

    S------
    Search

  10. F91542

    Frontier Airlines

    05:01

    MCO

    2.5h

    07:30

    PHL

    SMTWTFS

  11. F94567

    Frontier Airlines

    18:53

    STL

    2.5h

    20:22

    DEN

    S-T-TF-
    Search

  12. F93266

    Frontier Airlines

    15:36

    DEN

    3.6h

    21:15

    PHL

    SM-WTFS

  13. F94567

    Frontier Airlines

    18:53

    STL

    2.5h

    20:22

    DEN

    S-T-TF-
    Search

  14. F93340

    Frontier Airlines

    23:45

    DEN

    3.4h

    05:09

    PHL

    S---TFS

  15. F92017

    Frontier Airlines

    21:55

    STL

    3.8h

    23:41

    LAS

    S--WT-S
    Search

  16. F91602

    Frontier Airlines

    23:00

    LAS

    4.9h

    06:52

    PHL

    SMTWTFS
Find more flights and airlines

Find the best time to fly from St. Louis to Philadelphia

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • When are flight tickets from St. Louis (STL) to Philadelphia (PHL) the cheapest?

    Airlines adjust prices for flights from St. Louis to Philadelphia based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from St. Louis (STL) to Philadelphia (PHL) cost?

    According to Trip.com's data, the lowest price is around MYR 1,420.

  • How long does it take to fly from St. Louis (STL) to Philadelphia (PHL) and what is the distance?

    It takes around 2 hours 8 minutes to fly from St. Louis (STL) to Philadelphia (PHL).

  • What are the most popular airlines that fly from St. Louis (STL) to Philadelphia (PHL)?

    Airlines with flights from St. Louis (STL) to Philadelphia (PHL): American Airlines, Southwest Airlines, Qatar Airways, British Airways and Iberia.

How to find a cheap flight from St. Louis to Philadelphia

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from St. Louis to Philadelphia. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from St. Louis to Philadelphia

Cheapest nonstop flight priceMYR 242
Cheapest round-trip ticket priceMYR 1,006
Off-season for travelDecember
Peak season for travelMay
Flight distance1,293.47 km
Average flight time2 hours 8 minutes
Popular airlineDelta Air Lines

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