$459 Cheap United flights St. Louis (STL) to Phoenix (PHX)

View $459 flight on Mon, Apr 13, 2026Opens in a new window

$459 Cheap United flights St. Louis (STL) to Phoenix (PHX)

Prices were available within the past 7 days and start at $459 for one-way flights and $525 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Apr 13 - Fri, Apr 24
STL
St. Louis
PHX
Phoenix
$525 Roundtrip, found 9 hours ago
$525
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Apr 13 from St. Louis to Phoenix, returning Fri, Apr 24, priced at $525 found 9 hours ago
United
Mon, Apr 13 - Fri, Apr 24
STL
St. Louis
PHX
Phoenix
$547 Roundtrip, found 9 hours ago
$547
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Apr 13 from St. Louis to Phoenix, returning Fri, Apr 24, priced at $547 found 9 hours ago

Alternative airports near Phoenix

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sky Harbor Intl. PHX. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $190
PHX
Sky Harbor Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $190

Find the cheapest month to fly from St. Louis (STL) to Phoenix (PHX)

May is typically the cheapest month to fly

From $160 - $230 per traveler.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Sky Harbor Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Frontier Airlines
Distance
2014 km
Average flight time
1 hour 25 mins

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