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St. Louis Gateway Arch
STL
Saint Louis
Phoenix skyline with desert mountains
PHX
Phoenix

Saint Louis → Phoenix

Frontier Airlines · Round Trip · Nonstop

Save $14 (7% off)
Compared to the typical price of $196
$182$196

per person · round trip

Book This Deal

Flight Details

Cabin
Economy
Departs
May 1, 2026
Returns
May 5, 2026

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