F91261
F91261 (Frontier Airlines) flies Denver to Ontario. Of 494 departures recorded from October 2024 to July 2026, 80.0% left on time, according to the US BTS.
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 16 | 12 | ▼ 25.0% |
| February | 16 | 9 | ▼ 43.8% |
| March | 18 | 28 | ▲ 55.6% |
| April | 30 | 30 | 0.0% |
| May | 22 | 31 | ▲ 40.9% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 25 | – | – |
| September | 17 | – | – |
| October | 18 | – | in progress |
| November | 22 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 163 | 171 | ▲ 4.9% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 87.5% | 83.3% | ▼ 4.8% |
| February | 81.3% | 66.7% | ▼ 17.9% |
| March | 94.4% | 60.7% | ▼ 35.7% |
| April | 66.7% | 86.7% | ▲ 30.0% |
| May | 95.5% | 71.0% | ▼ 25.6% |
| June | 86.7% | 53.3% | ▼ 38.5% |
| July | 87.1% | 64.5% | ▼ 25.9% |
| August | 96.0% | – | – |
| September | 82.4% | – | – |
| October | 88.9% | – | in progress |
| November | 100.0% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 85.6% | 69.5% | ▼ 18.8% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 0 |
according to the US BTS · October 2024 → July 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 100.0% 494
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 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 | 8.7 min | 80.0% | 494 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 70.0% | 0 |
| December 2024 | 17 | 17 | 76.5% | 0 |
| January 2025 | 16 | 16 | 87.5% | 0 |
| February 2025 | 16 | 16 | 81.3% | 0 |
| March 2025 | 18 | 18 | 94.4% | 0 |
| April 2025 | 30 | 30 | 66.7% | 0 |
| May 2025 | 22 | 22 | 95.5% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 31 | 87.1% | 0 |
| August 2025 | 25 | 25 | 96.0% | 0 |
| September 2025 | 17 | 17 | 82.4% | 0 |
| October 2025 | 18 | 18 | 88.9% | 0 |
| November 2025 | 22 | 22 | 100.0% | 0 |
| December 2025 | 11 | 11 | 100.0% | 0 |
| January 2026 | 12 | 12 | 83.3% | 0 |
| February 2026 | 9 | 9 | 66.7% | 0 |
| March 2026 | 28 | 28 | 60.7% | 0 |
| April 2026 | 30 | 30 | 86.7% | 0 |
| May 2026 | 31 | 31 | 71.0% | 0 |
| June 2026 | 30 | 30 | 53.3% | 0 |
| July 2026 | 31 | 31 | 64.5% | 0 |