B
Is United Airlines on time Ontario to Denver?
853 flights · January 2025 – August 2026 · all airlines on ONT to DEN →
85.11%
Arrived on time
Route average 79.71%
0.35%
Cancelled
Route average 0.45%
85 min
When late, late by
The other airlines on this route
| Airline | Flights | On time | Grade |
|---|---|---|---|
| Southwest Airlines | 1,267 | 75.89% | C |
| Frontier Airlines | 552 | 80.11% | C |
Month by month
Jul 2025
peak 98
Jun 2026