Direct (nonstop) flights from Saint Louis to Phoenix
3 airlines fly nonstop from Saint Louis Airport (STL) to Phoenix Sky Harbor International (PHX). It's 1,260 miles (2,028 km), about 3h 25m in the air. Operated by American Airlines, Frontier Airlines, Southwest Airlines.
American Airlines
Frontier Airlines
Southwest Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AA
American Airlines
F9
Frontier Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Saint Louis to Phoenix with one stop · direct emits 213 kg CO₂ per passenger
Looking for the return flight?
PHX → STL: Flights from Phoenix to Saint LouisOther direct flights from Saint Louis
Direct flights from Phoenix (PHX)
Frequently Asked Questions
How long is the direct flight from Saint Louis to Phoenix?
A nonstop flight from Saint Louis (STL) to Phoenix (PHX) takes approximately 3 hours and 25 minutes. The distance is 1,260 miles (2,028 km).
Which airlines fly nonstop from Saint Louis to Phoenix?
3 airlines: American Airlines, Frontier Airlines, Southwest Airlines.
Is there a nonstop flight from Saint Louis to Phoenix?
Yes. 3 airlines: American Airlines, Frontier Airlines, Southwest Airlines.
How far is Saint Louis from Phoenix?
The flight distance from Saint Louis to Phoenix is 1,260 miles (2,028 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.
What type of aircraft flies from Saint Louis to Phoenix?
At 3h 25m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Saint Louis to Phoenix?
Roughly 213 kg CO2 per passenger one-way. That's about the same as driving 1,065 km.
Is the return flight from Phoenix to Saint Louis also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Saint Louis to Phoenix?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Saint Louis Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.