F91227
F91227 (Frontier Airlines) flies Chicago to Denver. Of 43 departures recorded from October 2024 to January 2026, 70.7% left on time, according to the US BTS.
Recorded departures by month
Short series — F91227 has only 7 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods5 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 5 | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | 3 | – | – |
| September | 1 | – | – |
| October | – | – | in progress |
| November | 6 | – | – |
| December | 11 | – | – |
according to the US BTS · October 2024 → January 2026
On-time departures by month
Short series — F91227 has only 7 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods5 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 60.0% | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | 33.3% | – | – |
| September | 100.0% | – | – |
| October | – | – | in progress |
| November | 83.3% | – | – |
| December | 80.0% | – | – |
according to the US BTS · October 2024 → January 2026
Average departure delay by month
Short series — F91227 has only 7 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · October 2024 → January 2026
Cancelled departures by month
Short series — F91227 has only 7 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods5 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
according to the US BTS · October 2024 → January 2026
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 95.3% 41
- Cancelled 4.7% 2
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jan 19, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW DEN Chicago Midway International Airport – Denver International Airport | 1,438 | 13.8 min | 70.7% | 43 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 50.0% | 0 |
| November 2024 | 9 | 8 | 87.5% | 1 |
| August 2025 | 3 | 3 | 33.3% | 0 |
| September 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 11 | 10 | 80.0% | 1 |
| January 2026 | 5 | 5 | 60.0% | 0 |