St Louis to Phoenix (STL–PHX) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
STL–PHX is served by 3 airlines with nonstop service. Southwest Airlines, American Airlines and Frontier lead the route. The flight covers 1,259 miles in approximately 3h 10m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| WN Southwest Airlines | 33 | 737, 738, 73H, 7M8, 7S7, B38M | 3h06-3h15 | – | – | |
| AA American Airlines Also: AS | 14 | 320, 738 | 3h15-3h23 | Oneworld | AS | |
| F9 Frontier Also: Y4 | 0 | – | – | – | Y4 |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Phoenix from St Louis
| Metric | STL→PHX | MWA→PHX | DEC→PHX |
|---|---|---|---|
| Distance from STL | – | 101 mi | 110 mi |
| Nonstop airlines | 3 | 1 | 1 |
| Weekly flights | 54 | – | 1 |
| Flight time | 3h 10m | 4h 10m | 3h 9m |
| Departure OTP | 84% | – | – |
Travel Essentials
STL: CDT · PHX: MST
When it's 6:00 PM in St Louis, it's 4:00 PM in Phoenix.
PHX Sky Train (free, 24h) connects T3 and T4 to the 44th Street/Washington light rail station in 5 minutes. Valley Metro Rail reaches downtown Phoenix in 20 minutes ($2). Uber and Lyft pick up at Ground Transportation on the lower level; follow signs. Taxis are metered; downtown Phoenix costs $20–30.Rental car agencies are consolidated in the Rental Car Center; the Sky Train connects there from both terminals without going to the street. For Scottsdale, Tempe, or Chandler, ride-hails are practical ($25–50). Express buses serve some suburban destinations.
Hot desert climate. Summers (June–September) are extreme. Daytime temperatures regularly exceed 43°C, occasionally reaching 48°C. Heat alone rarely cancels flights, but density altitude affects small aircraft performance. Monsoon season (July–mid-September) brings dramatic dust storms (haboob) that close the airport when they hit, plus intense flash-flooding thunderstorms that ground departures for 30–90 minutes.
Winters are exceptionally mild (10–22°C) with virtually no precipitation and near-constant sunshine. PHX has one of the lowest weather cancellation rates of any major US airport from November through April. Spring and fall are pleasant; late May and early June are hot and dry before monsoon arrives.
STL–PHX Quick Facts
Frequently Asked Questions
Flights from STL to PHX
St. Louis Lambert International Airport (STL) and Phoenix Sky Harbor International Airport (PHX) are connected by nonstop service from Southwest Airlines, American Airlines and Frontier. With 54 weekly departures, this is a heavily served route.
STL to PHX Flight Duration and Schedule
Nonstop flight time from STL to PHX is about 3 hours 10 minutes gate to gate. The route covers a distance of 1,259 miles (2,026 km). There are approximately 54 weekly flights outbound and 48 return, totaling 102 flights per week in both directions.
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via Kansas City, Dallas Love Field and Eppley Airfield. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Marion (MWA), Decatur (DEC) and Bloomington/Normal (BMI).