$122 Cheap flight deals from Phoenix (PHX) to Union (STL)
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This Weekend's Flight Deals from Phoenix to Union
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 $122 One Way, $240 Round Trip from Phoenix to Union
Prices starting at $240 for return flights and $122 for one-way flights to Union were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Union economy flight packages
The Wildwood Hotel
Jul 24 - Jul 27
Phoenix (PHX) to St. Louis (STL)
St. Louis (STL) to Phoenix (PHX)
Reviewed on Feb 24, 2026
Remodeled and Inviting Free EV
Aug 7 - Aug 10
Phoenix (PHX) to St. Louis (STL)
St. Louis (STL) to Phoenix (PHX)
Moonrise Hotel
Jul 24 - Jul 27
Phoenix (PHX) to St. Louis (STL)
St. Louis (STL) to Phoenix (PHX)
Reviewed on May 22, 2026
More About Flying To Union from Phoenix
Route Information for Flights from Phoenix to Union
Origin Airport IATA Code | PHX |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Phoenix to Union
The best fares for Phoenix to Union 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 Union is easy when you make Orbitz your #1 travel planner.
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Our iPhone and Android mobile apps can be used to compare and book flights from Phoenix to Union. 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.
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Increase Your Rewards While Enjoying Super Low Rates
Boost your points or miles for your frequent flyer program on certain Phoenix to Union flights. Simply provide your frequent flyer information when booking flights from Phoenix to Union 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
- Phoenix to Chicago
- Phoenix to Seattle
- Phoenix to Los Angeles
- Phoenix to Dallas
- Phoenix to Denver
- Phoenix to Houston
- Phoenix to New York
- Phoenix to Orlando
- Phoenix to Atlanta
- Phoenix to London
- Phoenix to Vancouver
- Phoenix to Toronto
- Phoenix to Cleveland
- Phoenix to Sacramento
- Phoenix to San Francisco
- Phoenix to Columbus
- Phoenix to Washington
- Phoenix to Charlotte
- Phoenix to Detroit
- Phoenix to St. Louis
Union Airports
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.