Flights to Southern Illinois from Houston - ￥17,340

View ￥17,340 flight on Wed, Aug 27, 2025Opens in a new window

Popular airlines from Houston to Southern Illinois

  • 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 Houston to Southern Illinois (HOU-STL)

Prices were available within the past 7 days and start at ￥17,340 for one-way flights and ￥58,530 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Apr 25 - Mon, May 4
HOU
Houston
STL
St. Louis
￥58,530 Roundtrip, just found
￥58,530
Roundtrip
just found
Select American Airlines flight, departing Sat, Apr 25 from Houston to St. Louis, returning Mon, May 4, priced at ￥58,530 just found
Delta
Sat, Apr 25 - Mon, May 4
IAH
Houston
STL
St. Louis
￥58,530 Roundtrip, just found
￥58,530
Roundtrip
just found
Select Delta flight, departing Sat, Apr 25 from Houston to St. Louis, returning Mon, May 4, priced at ￥58,530 just found
American Airlines
Sat, Apr 25 - Mon, May 4
IAH
Houston
STL
St. Louis
￥58,530 Roundtrip, just found
￥58,530
Roundtrip
just found
Select American Airlines flight, departing Sat, Apr 25 from Houston to St. Louis, returning Mon, May 4, priced at ￥58,530 just found
Delta
Sat, Apr 25 - Mon, May 4
IAH
Houston
STL
St. Louis
￥60,250 Roundtrip, just found
￥60,250
Roundtrip
just found
Select Delta flight, departing Sat, Apr 25 from Houston to St. Louis, returning Mon, May 4, priced at ￥60,250 just found
American Airlines
Sat, Apr 25 - Mon, May 4
IAH
Houston
STL
St. Louis
￥60,890 Roundtrip, just found
￥60,890
Roundtrip
just found
Select American Airlines flight, departing Sat, Apr 25 from Houston to St. Louis, returning Mon, May 4, priced at ￥60,890 just found
United
Sat, Apr 25 - Mon, May 4
IAH
Houston
STL
St. Louis
￥66,050 Roundtrip, just found
￥66,050
Roundtrip
just found
Select United flight, departing Sat, Apr 25 from Houston to St. Louis, returning Mon, May 4, priced at ￥66,050 just found
*Available to Expedia members.