Cheap flights from Houston to Southwest Illinois

View AU$262 flight on Thu, 14 Aug. 2025Opens in a new window

Popular airlines from Houston to Southwest Illinois

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Houston (HOU) to Southwest Illinois (STL)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 14 Aug. - Mon, 18 Aug.
IAH
Houston
STL
St. Louis
AU$366 Return, found 3 days ago
AU$366
Return
found 3 days ago
Select American Airlines flight, departing Thu, 14 Aug. from Houston to St. Louis, returning Mon, 18 Aug., priced at AU$366 found 3 days ago
Delta
Thu, 14 Aug. - Mon, 18 Aug.
IAH
Houston
STL
St. Louis
AU$445 Return, found 3 days ago
AU$445
Return
found 3 days ago
Select Delta flight, departing Thu, 14 Aug. from Houston to St. Louis, returning Mon, 18 Aug., priced at AU$445 found 3 days ago
American Airlines
Thu, 14 Aug. - Mon, 18 Aug.
IAH
Houston
STL
St. Louis
AU$447 Return, found 3 days ago
AU$447
Return
found 3 days ago
Select American Airlines flight, departing Thu, 14 Aug. from Houston to St. Louis, returning Mon, 18 Aug., priced at AU$447 found 3 days ago
Delta
Thu, 14 Aug. - Mon, 18 Aug.
IAH
Houston
STL
St. Louis
AU$484 Return, found 3 days ago
AU$484
Return
found 3 days ago
Select Delta flight, departing Thu, 14 Aug. from Houston to St. Louis, returning Mon, 18 Aug., priced at AU$484 found 3 days ago
United
Thu, 14 Aug. - Mon, 18 Aug.
IAH
Houston
STL
St. Louis
AU$512 Return, found 3 days ago
AU$512
Return
found 3 days ago
Select United flight, departing Thu, 14 Aug. from Houston to St. Louis, returning Mon, 18 Aug., priced at AU$512 found 3 days ago
Alaska Airlines
Thu, 14 Aug. - Mon, 18 Aug.
IAH
Houston
STL
St. Louis
AU$985 Return, found 3 days ago
AU$985
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 14 Aug. from Houston to St. Louis, returning Mon, 18 Aug., priced at AU$985 found 3 days ago
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