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Flights from St. Louis to Philadelphia
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Book flight tickets from St. Louis to Philadelphia starting at ₹ 3,800

For as little as ₹ 3,800, you can take your next adventure to Philadelphia without breaking the bank. Choose between one-way and return tickets from St. Louis below.

  • One way
  • Round-trip
      • Cheapest nonstop
        STL06:00
        2h 12m
        Nonstop
        PHL09:12
        Tue, Dec 17|St. Louis - Philadelphia|American Airlines
        ₹ 13,032₹ 14,401
        10% OFF
        10% OFF
        ₹ 14,401₹ 13,032

        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 Tue, Dec 17, arriving at Philadelphia International Airport. One-way ticket prices start from ₹ 13,032 including taxes and charges.

      • STL06:30
        2h 9m
        Nonstop
        PHL09:39
        Tue, Dec 31|St. Louis - Philadelphia|American Airlines
        ₹ 13,393₹ 14,401
        7% OFF
        7% OFF
        ₹ 14,401₹ 13,393

        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 Tue, Dec 31, arriving at Philadelphia International Airport. One-way ticket prices start from ₹ 13,393 including taxes and charges.

      • STL15:53
        7h 40m
        1 stop
        PHL00:33
        Tue, Dec 17|St. Louis - Philadelphia|Frontier Airlines
        ₹ 3,800₹ 14,401
        74% OFF
        74% OFF
        ₹ 14,401₹ 3,800

        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, Dec 17, arriving at Philadelphia International Airport. One-way ticket prices start from ₹ 3,800 including taxes and charges.

      • STL15:53
        6h 46m
        1 stop
        TTN23:39
        Wed, Dec 18|St. Louis - Philadelphia|Frontier Airlines
        ₹ 4,301
        ₹ 4,301

        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, Dec 18, arriving at Trenton Mercer Airport. One-way ticket prices start from ₹ 4,301 including taxes and charges.

      • STL17:05
        5h 54m
        1 stop
        TTN23:59
        Mon, Feb 10|St. Louis - Philadelphia|Frontier Airlines
        ₹ 4,581
        ₹ 4,581

        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 Mon, Feb 10, arriving at Trenton Mercer Airport. One-way ticket prices start from ₹ 4,581 including taxes and charges.

      • STL17:05
        13h 56m
        1 stop
        PHL08:01
        Sat, Jan 11|St. Louis - Philadelphia|Frontier Airlines
        ₹ 5,071
        ₹ 5,071

        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, Jan 11, arriving at Philadelphia International Airport. One-way ticket prices start from ₹ 5,071 including taxes and charges.

      • STL17:05
        19h 58m
        1 stop
        PHL14:03
        Tue, Jan 7|St. Louis - Philadelphia|Frontier Airlines
        ₹ 5,071
        ₹ 5,071

        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, Jan 7, arriving at Philadelphia International Airport. One-way ticket prices start from ₹ 5,071 including taxes and charges.

      • STL15:53
        14h 39m
        1 stop
        PHL07:32
        Sat, Jan 4|St. Louis - Philadelphia|Frontier Airlines
        ₹ 5,082
        ₹ 5,082

        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, Jan 4, arriving at Philadelphia International Airport. One-way ticket prices start from ₹ 5,082 including taxes and charges.

      • STL17:05
        23h 46m
        1 stop
        TTN17:51
        Thu, Jan 9|St. Louis - Philadelphia|Frontier Airlines
        ₹ 5,082
        ₹ 5,082

        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, Jan 9, arriving at Trenton Mercer Airport. One-way ticket prices start from ₹ 5,082 including taxes and charges.

      • STL07:43
        13h 11m
        1 stop
        PHL21:54
        Mon, Jan 6|St. Louis - Philadelphia|Frontier Airlines
        ₹ 5,117
        ₹ 5,117

        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 Mon, Jan 6, arriving at Philadelphia International Airport. One-way ticket prices start from ₹ 5,117 including taxes and charges.

      • STL13:00
        3h 5m
        Nonstop
        PHL14:00
        Wed, Dec 11|St. Louis - Philadelphia|American Airlines
        Find More Flights
        Find More Flights

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

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

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to Philadelphia from St. Louis have changed and are set to move below.

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

Airlines Flying from St. Louis to Philadelphia

Compare prices from various providers below to understand which option best suits your travel needs, before enjoying a comfortable journey with a trusted airline from St. Louis to Philadelphia.

Frontier Airlines
From ₹ 3,800
American Airlines
From ₹ 10,141
Delta Air Lines
From ₹ 10,794
United Airlines
From ₹ 13,603
Southwest Airlines
From ₹ 14,920
Alaska Airlines
From ₹ 20,107

Find more flights and airlines

Alternative Routes from St. Louis to Philadelphia

Did you know that you can save money and time on an alternative route from St. Louis to Philadelphia? Check out some of the different available routes below.

  • Cheapest
    Frontier Airlines
    STL
    15:53
    7h 40m
    1 transfer
    PHL
    00:33
    St.Louis Lambert International Airport - Philadelphia International Airport
    Tue, Dec 17Frontier Airlines
    ₹ 3,800
  • Frontier Airlines
    STL
    15:53
    6h 46m
    1 transfer
    TTN
    23:39
    St.Louis Lambert International Airport - Trenton Mercer Airport
    Tue, Dec 17Frontier Airlines
    ₹ 3,800
  • Frontier Airlines
    STL
    15:53
    6h 46m
    1 transfer
    TTN
    23:39
    St.Louis Lambert International Airport - Trenton Mercer Airport
    Tue, Dec 17Frontier Airlines
    ₹ 3,800
    Find More Flights

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 ₹ 27,101.

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

    It takes around 2 hours 9 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, Aer Lingus and Iberia.

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

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.
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 price₹ 3,799
Cheapest round-trip ticket price₹ 20,363
Off-season for travelDecember
Peak season for travelFebruary
Flight distance1,293.47 km
Average flight time2 hours 9 minutes
Popular airlineAmerican Airlines

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