Saint Louis (STL) to Phoenix (PHX) flights
2 airlines fly nonstop from Saint Louis (STL) to Phoenix (PHX): American Airlines and Southwest Airlines. The two airports are 1,258 miles (2,025 km) apart. American Airlines is in oneworld. There are also 30 ways to fly it with one stop, through Kansas City, Denver and Omaha and more.
Airlines flying nonstop from STL to PHX
- American Airlinesoneworld · bookable with 9 programsWho books it
- Southwest AirlinesNot in an allianceWho books it
Book STL to PHX with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks American Airlines
- American AAdvantageBooks American Airlines
- British Airways ClubBooks American Airlines
- Cathay Pacific Asia MilesBooks American Airlines
- Finnair PlusBooks American Airlines
- Iberia ClubBooks American Airlines
- JAL Mileage BankBooks American Airlines
- Qantas Frequent FlyerBooks American Airlines
- Qatar Airways Privilege ClubBooks American Airlines
STL to PHX with one stop
30 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Kansas City (MCI)Southwest Airlines the whole way
- Via Denver (DEN)Frontier Airlines, United Airlines and 1 more the whole way
+1 - Via Omaha (OMA)Southwest Airlines the whole way
- Via Dallas (DFW)American Airlines and Frontier Airlines the whole way
- Via Dallas (DAL)Southwest Airlines the whole way
- Via Austin (AUS)Southwest Airlines the whole way+1
- Via Las Vegas (LAS)Frontier Airlines and Southwest Airlines the whole way
- Via San Antonio (SAT)Southwest Airlines the whole way
- Via Salt Lake City (SLC)Delta Air Lines the whole way
+1 - Via Houston (IAH)United Airlines the whole way
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Houston (HOU)Southwest Airlines the whole way
- Via Nashville (BNA)Southwest Airlines the whole way
- Via Minneapolis (MSP)Delta Air Lines and Southwest Airlines the whole way+2
STL to PHX: common questions
Which airlines fly nonstop from STL to PHX?
American Airlines (oneworld) and Southwest Airlines fly nonstop from Saint Louis (STL) to Phoenix (PHX).
How far is Saint Louis from Phoenix by plane?
Saint Louis (STL) and Phoenix (PHX) are 1,258 miles (2,025 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book STL to PHX award flights?
9 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Finnair Plus, Iberia Club, JAL Mileage Bank, Qantas Frequent Flyer and 1 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does STL to PHX cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for STL to PHX with taxes and fees.
Where can I connect between Saint Louis and Phoenix?
The most direct connections are through Kansas City (MCI), Denver (DEN), Omaha (OMA), Dallas (DFW) and Dallas (DAL). On 30 of them the same airline flies both flights, for example Southwest Airlines through Kansas City.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.