ONT Delays Right Now
Live flight delay status at Ontario International (Ontario)
Live FAA status
Source: FAA National Airspace System Status (nasstatus.faa.gov). Updates every ~2 minutes.
On-time rate
82%
of departures
Avg delay
63 min
when late
Cancel rate
1.2%
of flights
Why flights get delayed at ONT
The most common reason for departure delays here is the incoming plane arriving late. 82% of departures are on time. When there is a delay, it's typically around 63 minutes — a long delay. About 1.2% of flights get cancelled.
Planes usually taxi out in a reasonable time. The typical wait from gate to takeoff is about 15 minutes.
Worst airlines for delays at ONT
Ranked by lowest historical on-time rate. Based on airlines with 500+ flights in our dataset.
| Airline | On-time | Avg delay |
|---|---|---|
| JetBlue Airways | 75% | 78 min |
| Frontier Airlines | 75% | 75 min |
| Hawaiian Airlines | 78% | 49 min |
| American Airlines | 79% | 86 min |
| United Airlines | 80% | 67 min |
Most reliable airlines at ONT
| Airline | On-time | Avg delay |
|---|---|---|
| SkyWest Airlines | 89% | 57 min |
| Delta Air Lines | 88% | 69 min |
| Alaska Airlines | 84% | 53 min |
| Southwest Airlines | 83% | 53 min |
| United Airlines | 80% | 67 min |
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