Flights to Northeast Missouri from Philadelphia - ￥56,670

View ￥56,670 flight on Thu, Jul 24, 2025Opens in a new window

Popular airlines from Philadelphia to Northeast Missouri

  • Peach

    Peach

  • Skymark Airlines

    Skymark Airlines

  • All Nippon Airways

    All Nippon Airways

  • Japan Airlines

    Japan Airlines

  • Jetstar Japan

    Jetstar Japan

  • Solaseed Air

    Solaseed Air

  • STARFLYER

    STARFLYER

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Philadelphia to Northeast Missouri (ILG-STL)

Prices were available within the past 7 days and start at ￥56,670 for one-way flights and ￥77,840 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Jul 25 - Sun, Jul 27
PHL
Philadelphia
STL
St. Louis
￥77,840 Roundtrip, found 5 days ago
￥77,840
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Jul 25 from Philadelphia to St. Louis, returning Sun, Jul 27, priced at ￥77,840 found 5 days ago
American Airlines
Fri, Jul 25 - Sun, Jul 27
PHL
Philadelphia
STL
St. Louis
￥79,270 Roundtrip, found 5 days ago
￥79,270
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Jul 25 from Philadelphia to St. Louis, returning Sun, Jul 27, priced at ￥79,270 found 5 days ago
American Airlines
Fri, Jul 25 - Sun, Jul 27
PHL
Philadelphia
STL
St. Louis
￥79,490 Roundtrip, found 5 days ago
￥79,490
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Jul 25 from Philadelphia to St. Louis, returning Sun, Jul 27, priced at ￥79,490 found 5 days ago
American Airlines
Fri, Jul 25 - Sun, Jul 27
PHL
Philadelphia
STL
St. Louis
￥80,530 Roundtrip, found 5 days ago
￥80,530
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Jul 25 from Philadelphia to St. Louis, returning Sun, Jul 27, priced at ￥80,530 found 5 days ago
Delta
Fri, Jul 25 - Sun, Jul 27
PHL
Philadelphia
STL
St. Louis
￥80,810 Roundtrip, found 5 days ago
￥80,810
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Jul 25 from Philadelphia to St. Louis, returning Sun, Jul 27, priced at ￥80,810 found 5 days ago
United
Fri, Jul 25 - Sun, Jul 27
PHL
Philadelphia
STL
St. Louis
￥91,660 Roundtrip, found 5 days ago
￥91,660
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jul 25 from Philadelphia to St. Louis, returning Sun, Jul 27, priced at ￥91,660 found 5 days ago

Find the cheapest month to fly from Philadelphia (PHL) to St. Louis (STL)

August is typically the cheapest month to fly

From ￥15,107 - ￥37,666 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.