F91499
F91499 (Frontier Airlines) flies Denver to Ontario. Of 421 departures recorded from October 2024 to March 2026, 71.4% left on time, according to the US BTS.
- On-time departures71.4%of 421 flights
- Average delay14.0 min
- March 20263▼ 86.4%vs March 2025
- Cancelled1.2%
according to the US BTS · Oct 12, 2024 → Mar 5, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 18 of 18 periods have data
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 21 | 19 | ▼ 9.5% |
| February | 19 | 19 | 0.0% |
| March | 22 | 3 | ▼ 86.4% |
| April | 30 | – | – |
| May | 27 | – | – |
| June | 25 | – | – |
| July | 31 | – | – |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Mar) | 62 | 41 | ▼ 33.9% |
according to the US BTS · October 2024 → March 2026
On-time departures by month
Partial coverage: domestic flights only · 18 of 18 periods have data
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 61.9% | 57.9% | ▼ 6.5% |
| February | 84.2% | 68.4% | ▼ 18.8% |
| March | 86.4% | 66.7% | ▼ 22.8% |
| April | 75.9% | – | – |
| May | 73.1% | – | – |
| June | 48.0% | – | – |
| July | 56.7% | – | – |
| August | 67.7% | – | – |
| September | 83.3% | – | – |
| October | 76.7% | – | in progress |
| November | 80.0% | – | – |
| December | 53.3% | – | – |
| Year-to-date average (Jan–Mar) | 77.5% | 64.3% | ▼ 17.0% |
according to the US BTS · October 2024 → March 2026
Average departure delay by month
Partial coverage: domestic flights only · 18 of 18 periods have data
according to the US BTS · October 2024 → March 2026
Cancelled departures by month
Partial coverage: domestic flights only · 18 of 18 periods have data
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | – | – |
| May | 1 | – | – |
| June | 0 | – | – |
| July | 1 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Mar) | 0 | 0 |
according to the US BTS · October 2024 → March 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 98.8% 416
- Cancelled 1.2% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Mar 5, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN ONT Denver International Airport – Ontario International Airport | 1,316 | 14.0 min | 71.4% | 421 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 65.0% | 0 |
| November 2024 | 22 | 21 | 66.7% | 1 |
| December 2024 | 26 | 26 | 96.2% | 0 |
| January 2025 | 21 | 21 | 61.9% | 0 |
| February 2025 | 19 | 19 | 84.2% | 0 |
| March 2025 | 22 | 22 | 86.4% | 0 |
| April 2025 | 30 | 29 | 75.9% | 1 |
| May 2025 | 27 | 26 | 73.1% | 1 |
| June 2025 | 25 | 25 | 48.0% | 0 |
| July 2025 | 31 | 30 | 56.7% | 1 |
| August 2025 | 31 | 31 | 67.7% | 0 |
| September 2025 | 30 | 30 | 83.3% | 0 |
| October 2025 | 31 | 30 | 76.7% | 1 |
| November 2025 | 30 | 30 | 80.0% | 0 |
| December 2025 | 15 | 15 | 53.3% | 0 |
| January 2026 | 19 | 19 | 57.9% | 0 |
| February 2026 | 19 | 19 | 68.4% | 0 |
| March 2026 | 3 | 3 | 66.7% | 0 |