UA1547
UA1547 (United Airlines) is a multi-stop service on 9 routes, busiest Denver to Kalispell. Of 424 departures recorded from October 2024 to July 2026, 85.1% left on time, according to the US BTS.
- On-time departures85.1%of 424 flights
- Average delay8.9 min
- July 202619▼ 38.7%vs July 2025
- Cancelled0.5%
- Legs flown under this number9
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 31 | – |
| February | – | 27 | – |
| March | – | 32 | – |
| April | – | 30 | – |
| May | 20 | 31 | ▲ 55.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 19 | ▼ 38.7% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 7 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 86.2% | – |
| February | – | 92.6% | – |
| March | – | 87.5% | – |
| April | – | 93.3% | – |
| May | 85.0% | 87.1% | ▲ 2.5% |
| June | 86.7% | 80.0% | ▼ 7.7% |
| July | 77.4% | 89.5% | ▲ 15.6% |
| August | 83.9% | – | – |
| September | 90.0% | – | – |
| October | 100.0% | – | in progress |
| November | 90.0% | – | – |
| December | 64.5% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 2 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 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 99.5% 422
- Cancelled 0.5% 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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN FCA Denver International Airport – Glacier Park International Airport | 1,210 | 7.7 min | 84.8% | 357 |
| BOI ORD Boise Air Terminal/Gowen Field – Chicago O'Hare International Airport | 2,307 | 14.4 min | 88.6% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 78.6% | 0 |
| May 2025 | 20 | 20 | 85.0% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 31 | 77.4% | 0 |
| August 2025 | 31 | 31 | 83.9% | 0 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 7 | 7 | 100.0% | 0 |
| November 2025 | 30 | 30 | 90.0% | 0 |
| December 2025 | 31 | 31 | 64.5% | 0 |
| January 2026 | 31 | 29 | 86.2% | 2 |
| February 2026 | 27 | 27 | 92.6% | 0 |
| March 2026 | 32 | 32 | 87.5% | 0 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 19 | 19 | 89.5% | 0 |