Cheap flights from St. Louis to Southwest Houston

View AU$182 flight on Sat, 18 Oct. 2025Opens in a new window

Popular airlines from St. Louis to Southwest Houston

  • 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 St. Louis (STL) to Southwest Houston (HOU)

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. - Fri, 15 Aug.
STL
St. Louis
IAH
Houston
AU$638 Return, found 6 days ago
AU$638
Return
found 6 days ago
Select American Airlines flight, departing Thu, 14 Aug. from St. Louis to Houston, returning Fri, 15 Aug., priced at AU$638 found 6 days ago
Delta
Thu, 14 Aug. - Fri, 15 Aug.
STL
St. Louis
HOU
Houston
AU$638 Return, found 6 days ago
AU$638
Return
found 6 days ago
Select Delta flight, departing Thu, 14 Aug. from St. Louis to Houston, returning Fri, 15 Aug., priced at AU$638 found 6 days ago
American Airlines
Thu, 14 Aug. - Fri, 15 Aug.
STL
St. Louis
HOU
Houston
AU$646 Return, found 6 days ago
AU$646
Return
found 6 days ago
Select American Airlines flight, departing Thu, 14 Aug. from St. Louis to Houston, returning Fri, 15 Aug., priced at AU$646 found 6 days ago
Delta
Thu, 14 Aug. - Fri, 15 Aug.
STL
St. Louis
IAH
Houston
AU$677 Return, found 6 days ago
AU$677
Return
found 6 days ago
Select Delta flight, departing Thu, 14 Aug. from St. Louis to Houston, returning Fri, 15 Aug., priced at AU$677 found 6 days ago
American Airlines
Thu, 14 Aug. - Fri, 15 Aug.
STL
St. Louis
IAH
Houston
AU$693 Return, found 6 days ago
AU$693
Return
found 6 days ago
Select American Airlines flight, departing Thu, 14 Aug. from St. Louis to Houston, returning Fri, 15 Aug., priced at AU$693 found 6 days ago
United
Thu, 14 Aug. - Fri, 15 Aug.
STL
St. Louis
IAH
Houston
AU$715 Return, found 6 days ago
AU$715
Return
found 6 days ago
Select United flight, departing Thu, 14 Aug. from St. Louis to Houston, returning Fri, 15 Aug., priced at AU$715 found 6 days ago

Find the cheapest month to fly from St. Louis (STL) to Houston (IAH)

September is typically the cheapest month to fly

From AU$169 - AU$289 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.