
$125 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 $125 One Way, $250 Round Trip from Phoenix to Southwest Illinois
Prices starting at $250 for return flights and $125 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

Hotel Indigo St Louis - Central West End by IHG
Dec 30 - Jan 4
Phoenix (PHX) to St. Louis (STL)
St. Louis (STL) to Phoenix (PHX)
Reviewed on Nov 12, 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
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Flights from Phoenix
- Phoenix to Chicago
- Phoenix to Seattle
- Phoenix to Los Angeles
- Phoenix to Dallas
- Phoenix to Denver
- Phoenix to Houston
- Phoenix to Orlando
- Phoenix to New York
- Phoenix to Atlanta
- Phoenix to London
- Phoenix to Vancouver
- Phoenix to Toronto
- Phoenix to Sacramento
- Phoenix to Cleveland
- Phoenix to San Francisco
- Phoenix to Columbus
- Phoenix to Charlotte
- Phoenix to St. Louis
- Phoenix to Washington
- Phoenix to Detroit
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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.
