$66 Cheap flight deals from Houston (HOU) to Southwest Illinois (STL)
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This Weekend's Flight Deals from Houston to Southwest Illinois
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $66 One Way, $151 Round Trip from Houston to Southwest Illinois
Prices starting at $151 for return flights and $66 for one-way flights to Southwest Illinois were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Southwest Illinois economy flight packages
The Wildwood Hotel
Mar 26 - Mar 30
Houston (IAH) to St. Louis (STL)
St. Louis (STL) to Houston (IAH)
Reviewed on Oct 16, 2025
The Cheshire
Mar 26 - Mar 30
Houston (IAH) to St. Louis (STL)
St. Louis (STL) to Houston (IAH)
Reviewed on Sep 2, 2025
Hotel Saint Louis, Autograph Collection
Mar 26 - Mar 30
Houston (IAH) to St. Louis (STL)
St. Louis (STL) to Houston (IAH)
Reviewed on Aug 17, 2021
More About Flying To Southwest Illinois from Houston
Route Information for Flights from Houston to Southwest Illinois
Origin Airport IATA Code | HOU |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Houston to Southwest Illinois
Orbitz guarantees you low prices on flights from Houston to Southwest Illinois. In addition to low fares on Houston to Southwest Illinois flights, Orbitz offers fantastic savings on hotels, cruises, vacation packages, and more.
Earn Miles While Saving
Besides helping you fly for the lowest fares, Orbitz lets you earn miles for your frequent flyer program for certain flights from Houston to Southwest Illinois. If you are a member of the frequent flyer or loyalty program offered by the airline you booked through Orbitz or a partner airline’s, simply add your frequent flyer number to your Orbitz reservation to get credit for your Houston to Southwest Illinois flights.
Travel Planning Made Easy
We help take some of the anxiety out of your Houston to Southwest Illinois flights with free flight alerts. We will let you know of flight changes and delays to your flights from Houston to Southwest Illinois by email, voicemail, or text messages to your mobile phone. Alerts can also be sent to up to six other contacts to keep family and business teams informed.
Use Mobile Apps with Orbitz
Orbitz lets you find the best deals on Houston to Southwest Illinois flights while on the go, with our easy-to-use Android and iPhone mobile apps. Easily check flight status, gate numbers, and other flight details all in one place with our app—which is great when you are in a hurry. You can use the apps to access great mobile deals on flights and amazing hotel rooms.
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.