UA1315
UA1315 (United Airlines) is a multi-stop service on 8 routes, busiest Denver to St Louis. Of 747 departures recorded from October 2024 to July 2026, 87.7% left on time, according to the US BTS.
- On-time departures87.7%of 747 flights
- Average delay5.8 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.3%
- Legs flown under this number8
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 21 | ▼ 32.3% |
| February | 28 | 17 | ▼ 39.3% |
| March | 57 | 28 | ▼ 50.9% |
| April | 60 | 23 | ▼ 61.7% |
| May | 31 | 45 | ▲ 45.2% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 268 | 195 | ▼ 27.2% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 73.3% | 90.5% | ▲ 23.4% |
| February | 92.9% | 94.1% | ▲ 1.4% |
| March | 93.0% | 66.7% | ▼ 28.3% |
| April | 70.0% | 91.3% | ▲ 30.4% |
| May | 83.9% | 93.3% | ▲ 11.3% |
| June | 83.3% | 93.3% | ▲ 12.0% |
| July | 83.9% | 90.3% | ▲ 7.7% |
| August | 93.6% | – | – |
| September | 96.7% | – | – |
| October | 93.6% | – | in progress |
| November | 92.9% | – | – |
| December | 83.9% | – | – |
| Year-to-date average (Jan–Jul) | 82.9% | 88.5% | ▲ 6.8% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| 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) | 1 | 1 | 0.0% |
according to the US BTS · October 2024 → July 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 99.7% 745
- Cancelled 0.3% 2
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN STL Denver International Airport – St. Louis Lambert International Airport | 1,236 | 5.3 min | 88.0% | 519 |
| LAS DEN Harry Reid International Airport – Denver International Airport | 1,009 | 2.1 min | 89.9% | 109 |
| STL SFO St. Louis Lambert International Airport – San Francisco International Airport | 2,786 | 13.4 min | 62.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 25 | 25 | 100.0% | 0 |
| November 2024 | 59 | 59 | 84.8% | 0 |
| December 2024 | 49 | 49 | 95.9% | 0 |
| January 2025 | 31 | 30 | 73.3% | 1 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 57 | 57 | 93.0% | 0 |
| April 2025 | 60 | 60 | 70.0% | 0 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 30 | 30 | 83.3% | 0 |
| July 2025 | 31 | 31 | 83.9% | 0 |
| August 2025 | 31 | 31 | 93.6% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 28 | 28 | 92.9% | 0 |
| December 2025 | 31 | 31 | 83.9% | 0 |
| January 2026 | 21 | 21 | 90.5% | 0 |
| February 2026 | 17 | 17 | 94.1% | 0 |
| March 2026 | 28 | 27 | 66.7% | 1 |
| April 2026 | 23 | 23 | 91.3% | 0 |
| May 2026 | 45 | 45 | 93.3% | 0 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 31 | 31 | 90.3% | 0 |