Cheap flights from Houston to Southern Illinois

View NZ$198 flight on Thu, 14 Aug. 2025Opens in a new window

Popular airlines from Houston to Southern Illinois

  • Air New Zealand

    Air New Zealand

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  • Jetstar

    Jetstar

  • Cathay Pacific

    Cathay Pacific

  • American Airlines

    American Airlines

  • AirAsiaX

    AirAsiaX

  • British Airways

    British Airways

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Cheap Flights from Houston (HOU) to Southern 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
Tue, 12 Aug. - Tue, 9 Sep.
IAH
Houston
STL
St. Louis
NZ$382 Return, found 1 day ago
NZ$382
Return
found 1 day ago
Select American Airlines flight, departing Tue, 12 Aug. from Houston to St. Louis, returning Tue, 9 Sep., priced at NZ$382 found 1 day ago
Delta
Wed, 13 Aug. - Thu, 11 Sep.
IAH
Houston
STL
St. Louis
NZ$395 Return, found 1 day ago
NZ$395
Return
found 1 day ago
Select Delta flight, departing Wed, 13 Aug. from Houston to St. Louis, returning Thu, 11 Sep., priced at NZ$395 found 1 day ago
American Airlines
Tue, 12 Aug. - Sun, 7 Sep.
IAH
Houston
STL
St. Louis
NZ$397 Return, found 1 day ago
NZ$397
Return
found 1 day ago
Select American Airlines flight, departing Tue, 12 Aug. from Houston to St. Louis, returning Sun, 7 Sep., priced at NZ$397 found 1 day ago
American Airlines
Wed, 13 Aug. - Wed, 10 Sep.
IAH
Houston
STL
St. Louis
NZ$400 Return, found 1 day ago
NZ$400
Return
found 1 day ago
Select American Airlines flight, departing Wed, 13 Aug. from Houston to St. Louis, returning Wed, 10 Sep., priced at NZ$400 found 1 day ago
Delta
Fri, 15 Aug. - Thu, 11 Sep.
IAH
Houston
STL
St. Louis
NZ$401 Return, found 1 day ago
NZ$401
Return
found 1 day ago
Select Delta flight, departing Fri, 15 Aug. from Houston to St. Louis, returning Thu, 11 Sep., priced at NZ$401 found 1 day ago
United
Wed, 13 Aug. - Wed, 10 Sep.
IAH
Houston
STL
St. Louis
NZ$444 Return, found 1 day ago
NZ$444
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug. from Houston to St. Louis, returning Wed, 10 Sep., priced at NZ$444 found 1 day ago
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