Route
STL → PHX
St. Louis Lambert International Airport Phoenix Sky Harbor International Airport
How punctual is this route?
- On-time arrivals
- 74.8%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 82 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,309
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 47%
- Late-arriving aircraft 41%
- Air traffic control & airport 10%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 77.6% | 160 |
| October 2025 | 74.9% | 200 |
| November 2025 | 70.4% | 187 |
| December 2025 | 70.9% | 206 |
| January 2026 | 84.5% | 199 |
| February 2026 | 81.9% | 193 |
| March 2026 | 78.9% | 233 |
| April 2026 | 79.7% | 207 |
| May 2026 | 73.6% | 202 |
| June 2026 | 57.6% | 166 |
| July 2026 | 69.2% | 197 |
| August 2026 | 75.0% | 159 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 1,619 | 71.3% | 0.3% | 56 min |
| American Airlines | 584 | 81.5% | 1.0% | 178 min |
| Frontier Airlines | 53 | 82.7% | 1.9% | 213 min |
| Envoy Air | 30 | 100.0% | 0.0% | — |
| SkyWest Airlines | 23 | 95.7% | 0.0% | 221 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
AA2574
14% late · 307 flights
-
AA2303
20% late · 137 flights
-
WN1183
40% late · 58 flights
-
WN3817
28% late · 58 flights
-
AA3179
32% late · 57 flights
-
WN2013
4% late · 57 flights
-
WN4360
68% late · 57 flights
-
WN3890
33% late · 56 flights
-
WN3827
26% late · 53 flights
-
WN2399
50% late · 50 flights
-
WN2362
22% late · 47 flights
-
F92075
16% late · 46 flights
-
WN3110
24% late · 45 flights
-
WN3968
47% late · 45 flights
-
AA890
20% late · 44 flights
-
WN4615
67% late · 44 flights
-
WN1871
58% late · 43 flights
-
WN3967
2% late · 43 flights
-
WN4110
12% late · 43 flights
-
WN2402
29% late · 42 flights
-
WN1503
44% late · 33 flights
-
WN1785
9% late · 33 flights
-
WN2847
6% late · 33 flights
-
WN1393
13% late · 31 flights
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