F91599
F91599 (Frontier Airlines) is a multi-stop service on 2 routes, busiest New York to Denver. Of 50 departures recorded from November 2024 to January 2026, 78.0% left on time, according to the US BTS.
- On-time departures78.0%of 50 flights
- Average delay34.0 min
- January 20268
- Cancelled0.0%
- Legs flown under this number2
Recorded departures by month
Short series — F91599 has only 5 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods4 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 8 | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 11 | – | in progress |
| November | 15 | – | – |
| December | 15 | – | – |
according to the US BTS · November 2024 → January 2026
On-time departures by month
Short series — F91599 has only 5 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 periods4 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 87.5% | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 81.8% | – | in progress |
| November | 80.0% | – | – |
| December | 66.7% | – | – |
according to the US BTS · November 2024 → January 2026
Average departure delay by month
Short series — F91599 has only 5 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 · November 2024 → January 2026
Cancelled departures by month
Short series — F91599 has only 5 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods4 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · November 2024 → January 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 100.0% 50
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Nov 4, 2024 → Jan 18, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| JFK DEN John F. Kennedy International Airport – Denver International Airport | 2,610 | 35.0 min | 77.6% | 49 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 1 | 1 | 100.0% | 0 |
| October 2025 | 11 | 11 | 81.8% | 0 |
| November 2025 | 15 | 15 | 80.0% | 0 |
| December 2025 | 15 | 15 | 66.7% | 0 |
| January 2026 | 8 | 8 | 87.5% | 0 |