Flight profile · Frontier Airlines
F91261
Denver (DEN) to Ontario (ONT) · scheduled 10:29 PM – 11:49 PM
How F91261 performs
760 operations, 2023-11-16 to 2026-06-30.
F91261 arrived on time 84.0% of the time, against 74.5% for all DEN → ONT flights — this specific departure is 9.5 percentage points better than the route as a whole. Against Frontier Airlines’s own flights on this route it is 6.4 points better.
Source: US DOT Bureau of Transportation Statistics · 760 operations between 2023-11-16 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| F91261 | 84.0% | 0.53% | -10 min | 5.3% | 760 |
| Frontier Airlines on DEN → ONT | 77.6% | 0.84% | -7 min | 7.7% | 1,911 |
| All DEN → ONT flights | 74.5% | 0.62% | -3 min | 7.9% | 8,448 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-11-16 to 2026-06-30
Other routes F91261 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
Because the same number has served different journeys, the statistics above describe only the route F91261 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 760 records of F91261 operating DEN → ONT, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.