F91588
F91588 (Frontier Airlines) flies Denver to Tulsa. Of 43 departures recorded from October 2025 to April 2026, 79.1% left on time, according to the US BTS.
Recorded departures by month
Short series — F91588 has only 7 months so far. Enough to show the level now, not enough to read a trend.
The most recent periods7 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 5 | – |
| February | – | 5 | – |
| March | – | 9 | – |
| April | – | 4 | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 6 | – | in progress |
| November | 8 | – | – |
| December | 6 | – | – |
according to the US BTS · October 2025 → April 2026
On-time departures by month
Short series — F91588 has only 7 months so far. Enough to show the level now, not enough to read a trend.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods7 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 100.0% | – |
| February | – | 80.0% | – |
| March | – | 77.8% | – |
| April | – | 75.0% | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 50.0% | – | in progress |
| November | 75.0% | – | – |
| December | 100.0% | – | – |
according to the US BTS · October 2025 → April 2026
Average departure delay by month
Short series — F91588 has only 7 months so far. Enough to show the level now, not enough to read a trend.
according to the US BTS · October 2025 → April 2026
Cancelled departures by month
Short series — F91588 has only 7 months so far. Enough to show the level now, not enough to read a trend.
The most recent periods7 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | – | 0 | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2025 → April 2026
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 100.0% 43
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 12, 2025 → Apr 12, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN TUL Denver International Airport – Tulsa International Airport | 870 | 9.8 min | 79.1% | 43 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2025 | 6 | 6 | 50.0% | 0 |
| November 2025 | 8 | 8 | 75.0% | 0 |
| December 2025 | 6 | 6 | 100.0% | 0 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| February 2026 | 5 | 5 | 80.0% | 0 |
| March 2026 | 9 | 9 | 77.8% | 0 |
| April 2026 | 4 | 4 | 75.0% | 0 |