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Cheap flights from St Louis (STL) to Phoenix (PHX)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Phoenix (PHX)

How to find the cheapest flight from St Louis (STL) to Phoenix (PHX)
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How to find the cheapest flight from St Louis (STL) to Phoenix (PHX)
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How to find the cheapest flight from St Louis (STL) to Phoenix (PHX)
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Cheap flights from St Louis to Phoenix in May , June 2026

30 May - 24 Jun $ 316.00
STL
St Louis
Frontier Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
Frontier Airlines
1 STOPS
STL
St Louis
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30 May - 09 Jun $ 517.00
STL
St Louis
Alaska Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
Alaska Airlines
1 STOPS
STL
St Louis
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26 May - 09 Jun $ 526.00
STL
St Louis
Alaska Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
Alaska Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Phoenix

27 May - 31 May $ 556.00
STL
St Louis
United Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
United Airlines
1 STOPS
STL
St Louis
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24 May - 31 May $ 560.00
STL
St Louis
United Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
United Airlines
1 STOPS
STL
St Louis
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28 May - 31 May $ 602.00
STL
St Louis
United Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
United Airlines
1 STOPS
STL
St Louis
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One-way flights to Phoenix from St Louis

8:08 PM - 10:34 PM
Frontier Airlines
1 Stops
5h 21m
STL - PHX
$ 124
Kiwi
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8:08 PM - 10:34 PM
Frontier Airlines
1 Stops
5h 21m
STL - PHX
$ 124
Kiwi
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1:38 PM - 3:43 PM
United Airlines
1 Stops
5h 5m
STL - PHX
$ 186
Kiwi
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How to find the cheapest flight from St Louis (STL) to Phoenix (PHX)

Related info for your journey
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How to find the cheapest flight from St Louis (STL) to Phoenix (PHX)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Phoenix (PHX)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.