UA1558
UA1558 (United Airlines) is a multi-stop service on 11 routes, busiest Denver to Fayetteville. Of 677 departures recorded from October 2024 to July 2026, 68.2% left on time, according to the US BTS.
- On-time departures68.2%of 677 flights
- Average delay25.7 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.6%
- Legs flown under this number11
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 | 31 | 0.0% |
| February | 28 | 25 | ▼ 10.7% |
| March | 31 | 51 | ▲ 64.5% |
| April | 30 | 26 | ▼ 13.3% |
| May | 31 | 32 | ▲ 3.2% |
| June | 30 | 27 | ▼ 10.0% |
| July | 31 | 31 | 0.0% |
| August | 35 | – | – |
| September | 35 | – | – |
| October | 36 | – | in progress |
| November | 26 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 212 | 223 | ▲ 5.2% |
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 | 83.9% | 74.2% | ▼ 11.5% |
| February | 74.1% | 56.5% | ▼ 23.7% |
| March | 83.9% | 68.0% | ▼ 18.9% |
| April | 70.0% | 92.3% | ▲ 31.9% |
| May | 64.5% | 74.2% | ▲ 15.0% |
| June | 56.7% | 26.9% | ▼ 52.5% |
| July | 41.9% | 39.3% | ▼ 6.3% |
| August | 76.5% | – | – |
| September | 68.6% | – | – |
| October | 47.2% | – | in progress |
| November | 72.0% | – | – |
| December | 62.1% | – | – |
| Year-to-date average (Jan–Jul) | 67.8% | 61.6% | ▼ 9.2% |
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 | 0 | 0 | – |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 1 | – |
| July | 0 | 3 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 8 | ▲ 700.0% |
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 98.4% 666
- Cancelled 1.6% 11
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN XNA Denver International Airport – Northwest Arkansas National Airport | 990 | 24.3 min | 70.4% | 259 |
| EWR SFO Newark Liberty International Airport – San Francisco International Airport | 4,118 | 37.9 min | 57.5% | 242 |
| ORD CHS Chicago O'Hare International Airport – Charleston International Airport | 1,224 | 16.3 min | 70.3% | 37 |
| MKE DEN General Mitchell International Airport – Denver International Airport | 1,438 | 1.8 min | 86.5% | 37 |
| EWR SEA Newark Liberty International Airport – Seattle–Tacoma International Airport | 3,855 | -1.8 min | 91.9% | 37 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 31 | 31 | 83.9% | 0 |
| February 2025 | 28 | 27 | 74.1% | 1 |
| March 2025 | 31 | 31 | 83.9% | 0 |
| April 2025 | 30 | 30 | 70.0% | 0 |
| May 2025 | 31 | 31 | 64.5% | 0 |
| June 2025 | 30 | 30 | 56.7% | 0 |
| July 2025 | 31 | 31 | 41.9% | 0 |
| August 2025 | 35 | 34 | 76.5% | 1 |
| September 2025 | 35 | 35 | 68.6% | 0 |
| October 2025 | 36 | 36 | 47.2% | 0 |
| November 2025 | 26 | 25 | 72.0% | 1 |
| December 2025 | 29 | 29 | 62.1% | 0 |
| January 2026 | 31 | 31 | 74.2% | 0 |
| February 2026 | 25 | 23 | 56.5% | 2 |
| March 2026 | 51 | 50 | 68.0% | 1 |
| April 2026 | 26 | 26 | 92.3% | 0 |
| May 2026 | 32 | 31 | 74.2% | 1 |
| June 2026 | 27 | 26 | 26.9% | 1 |
| July 2026 | 31 | 28 | 39.3% | 3 |