F93439
F93439 (Frontier Airlines) flies Denver to San Francisco. Of 541 departures recorded from October 2024 to July 2026, 65.9% left on time, according to the US BTS.
- On-time departures65.9%of 541 flights
- Average delay18.9 min
- July 202631▲ 40.9%vs July 2025
- Cancelled1.3%
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 | 31 | 17 | ▼ 45.2% |
| February | 26 | 19 | ▼ 26.9% |
| March | 31 | 29 | ▼ 6.5% |
| April | 30 | 22 | ▼ 26.7% |
| May | 27 | 22 | ▼ 18.5% |
| June | 22 | 30 | ▲ 36.4% |
| July | 22 | 31 | ▲ 40.9% |
| August | 20 | – | – |
| September | 17 | – | – |
| October | 18 | – | in progress |
| November | 20 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 189 | 170 | ▼ 10.1% |
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 | 61.3% | 52.9% | ▼ 13.6% |
| February | 61.5% | 84.2% | ▲ 36.8% |
| March | 71.0% | 75.0% | ▲ 5.7% |
| April | 80.0% | 75.0% | ▼ 6.3% |
| May | 61.5% | 81.8% | ▲ 33.0% |
| June | 31.8% | 66.7% | ▲ 109.5% |
| July | 38.1% | 51.6% | ▲ 35.5% |
| August | 40.0% | – | – |
| September | 52.9% | – | – |
| October | 61.1% | – | in progress |
| November | 79.0% | – | – |
| December | 67.9% | – | – |
| Year-to-date average (Jan–Jul) | 57.9% | 69.6% | ▲ 20.2% |
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 | 1 | – |
| April | 0 | 2 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 3 | ▲ 50.0% |
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 98.7% 534
- Cancelled 1.3% 7
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 SFO Denver International Airport – San Francisco International Airport | 1,553 | 18.9 min | 65.9% | 541 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 75.0% | 0 |
| November 2024 | 28 | 27 | 85.2% | 1 |
| December 2024 | 31 | 31 | 80.7% | 0 |
| January 2025 | 31 | 31 | 61.3% | 0 |
| February 2025 | 26 | 26 | 61.5% | 0 |
| March 2025 | 31 | 31 | 71.0% | 0 |
| April 2025 | 30 | 30 | 80.0% | 0 |
| May 2025 | 27 | 26 | 61.5% | 1 |
| June 2025 | 22 | 22 | 31.8% | 0 |
| July 2025 | 22 | 21 | 38.1% | 1 |
| August 2025 | 20 | 20 | 40.0% | 0 |
| September 2025 | 17 | 17 | 52.9% | 0 |
| October 2025 | 18 | 18 | 61.1% | 0 |
| November 2025 | 20 | 19 | 79.0% | 1 |
| December 2025 | 28 | 28 | 67.9% | 0 |
| January 2026 | 17 | 17 | 52.9% | 0 |
| February 2026 | 19 | 19 | 84.2% | 0 |
| March 2026 | 29 | 28 | 75.0% | 1 |
| April 2026 | 22 | 20 | 75.0% | 2 |
| May 2026 | 22 | 22 | 81.8% | 0 |
| June 2026 | 30 | 30 | 66.7% | 0 |
| July 2026 | 31 | 31 | 51.6% | 0 |