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

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

November is typically the cheapest month to fly

From $112 - $242 per traveler.

Alternative airports near Phoenix

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

Travel information

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

Explore a world of travel with Expedia