$120 Cheap flight deals from Phoenix (PHX) to Southwest Illinois (STL)
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This Weekend's Flight Deals from Phoenix 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 $120 One Way, $240 Round Trip from Phoenix to Southwest Illinois
Prices starting at $240 for return flights and $120 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 Hermann Motel
Aug 13 - Aug 16
Phoenix (PHX) to St. Louis (STL)
Reviewed on Jun 29, 2026
Inn at Hermannhof
Aug 13 - Aug 16
Phoenix (PHX) to St. Louis (STL)
Reviewed on Jun 30, 2026
Hermann Crown Suites
Aug 13 - Aug 16
Phoenix (PHX) to St. Louis (STL)
Reviewed on Jun 22, 2026
More About Flying To Southwest Illinois from Phoenix
Route Information for Flights from Phoenix to Southwest Illinois
Origin Airport IATA Code | PHX |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Phoenix to Southwest Illinois
The best fares for Phoenix to Southwest Illinois flights are always found on Orbitz. With superior discounts and the latest innovations in mobile access, your ideal trip starts with Orbitz.
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We provide access to many low-cost vacation packages and travelers can mix and match airlines when scheduling their flights for the best prices and flight times. Finding cheap tickets on flights from Phoenix to Southwest Illinois is easy when you make Orbitz your #1 travel planner.
Book Phoenix to Southwest Illinois Flights With Mobile Apps
Our iPhone and Android mobile apps can be used to compare and book flights from Phoenix to Southwest Illinois. These apps are perfect for checking the status of flights, gate and baggage claims details, car rental rates, and for receiving alerts on special savings that are exclusive to mobile users. Mobile app users can even score great rates when booking hotel rooms. You can compare hotels, virtually view photo galleries, and check out user reviews using the app, as well as find out which ones are closest to you.
Orbitz also offers free travel updates that are sent to your email or mobile phone that notifies you of booking changes, disruptions in service, or delayed flights.
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Boost your points or miles for your frequent flyer program on certain Phoenix to Southwest Illinois flights. Simply provide your frequent flyer information when booking flights from Phoenix to Southwest Illinois with Orbitz and get both a low fare and travel rewards. You can enter this information in your Orbitz account profile for easy remembering in future bookings.
Flights from Phoenix
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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.