Route
ONT → PHX
Ontario International Airport Phoenix Sky Harbor International Airport
How punctual is this route?
- On-time arrivals
- 82.4%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 77 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,011
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 47%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 15%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.6% | 227 |
| October 2025 | 76.7% | 258 |
| November 2025 | 73.6% | 272 |
| December 2025 | 80.1% | 282 |
| January 2026 | 85.3% | 261 |
| February 2026 | 87.5% | 240 |
| March 2026 | 85.4% | 289 |
| April 2026 | 86.9% | 252 |
| May 2026 | 87.8% | 254 |
| June 2026 | 78.3% | 224 |
| July 2026 | 78.7% | 231 |
| August 2026 | 83.0% | 221 |
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 | 1,615 | 80.5% | 0.4% | 56 min |
| American Airlines | 1,305 | 84.5% | 0.9% | 112 min |
| SkyWest Airlines | 46 | 82.2% | 2.2% | 42 min |
| Envoy Air | 45 | 88.9% | 0.0% | 37 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
AA1591
10% late · 182 flights
-
AA1194
6% late · 181 flights
-
AA1423
9% late · 139 flights
-
AA3016
21% late · 136 flights
-
AA1666
26% late · 103 flights
-
AA2244
14% late · 75 flights
-
AA3139
18% late · 71 flights
-
AA2661
12% late · 62 flights
-
WN2956
7% late · 58 flights
-
WN3034
7% late · 58 flights
-
WN1474
12% late · 57 flights
-
WN3987
9% late · 55 flights
-
WN3038
15% late · 53 flights
-
WN3160
50% late · 52 flights
-
WN864
2% late · 52 flights
-
WN556
20% late · 50 flights
-
WN2388
7% late · 47 flights
-
AA2397
38% late · 45 flights
-
AA2463
9% late · 44 flights
-
MQ4143
11% late · 44 flights
-
WN3351
10% late · 43 flights
-
WN257
43% late · 42 flights
-
WN3664
7% late · 42 flights
-
WN719
49% late · 41 flights
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