Cheap flights from Phoenix to Southwest Illinois

View AU$242 flight on Sat, 30 Aug. 2025Opens in a new window

Popular airlines from Phoenix to Southwest Illinois

  • 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 Phoenix (PHX) to Southwest Illinois (STL)

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
Sat, 30 Aug. - Sat, 6 Sep.
PHX
Phoenix
STL
St. Louis
AU$454 Return, found 6 days ago
AU$454
Return
found 6 days ago
Select American Airlines flight, departing Sat, 30 Aug. from Phoenix to St. Louis, returning Sat, 6 Sep., priced at AU$454 found 6 days ago
American Airlines
Sat, 30 Aug. - Sat, 6 Sep.
PHX
Phoenix
STL
St. Louis
AU$469 Return, found 6 days ago
AU$469
Return
found 6 days ago
Select American Airlines flight, departing Sat, 30 Aug. from Phoenix to St. Louis, returning Sat, 6 Sep., priced at AU$469 found 6 days ago
Delta
Sat, 30 Aug. - Sat, 6 Sep.
PHX
Phoenix
STL
St. Louis
AU$484 Return, found 6 days ago
AU$484
Return
found 6 days ago
Select Delta flight, departing Sat, 30 Aug. from Phoenix to St. Louis, returning Sat, 6 Sep., priced at AU$484 found 6 days ago
American Airlines
Sat, 30 Aug. - Sat, 6 Sep.
PHX
Phoenix
STL
St. Louis
AU$538 Return, found 6 days ago
AU$538
Return
found 6 days ago
Select American Airlines flight, departing Sat, 30 Aug. from Phoenix to St. Louis, returning Sat, 6 Sep., priced at AU$538 found 6 days ago
Delta
Sat, 30 Aug. - Sat, 6 Sep.
PHX
Phoenix
STL
St. Louis
AU$538 Return, found 6 days ago
AU$538
Return
found 6 days ago
Select Delta flight, departing Sat, 30 Aug. from Phoenix to St. Louis, returning Sat, 6 Sep., priced at AU$538 found 6 days ago
United
Sat, 30 Aug. - Sat, 6 Sep.
PHX
Phoenix
STL
St. Louis
AU$545 Return, found 6 days ago
AU$545
Return
found 6 days ago
Select United flight, departing Sat, 30 Aug. from Phoenix to St. Louis, returning Sat, 6 Sep., priced at AU$545 found 6 days ago
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