UA1377
UA1377 (United Airlines) is a multi-stop service on 9 routes, busiest Denver to Chicago. Of 958 departures recorded from October 2024 to July 2026, 85.5% left on time, according to the US BTS.
- On-time departures85.5%of 958 flights
- Average delay10.1 min
- July 202631▼ 50.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number9
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 | 57 | ▲ 83.9% |
| February | 28 | 55 | ▲ 96.4% |
| March | 31 | 62 | ▲ 100.0% |
| April | 30 | 59 | ▲ 96.7% |
| May | 62 | 48 | ▼ 22.6% |
| June | 60 | 54 | ▼ 10.0% |
| July | 62 | 31 | ▼ 50.0% |
| August | 62 | – | – |
| September | 54 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 304 | 366 | ▲ 20.4% |
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 | 87.1% | 80.0% | ▼ 8.2% |
| February | 78.6% | 87.3% | ▲ 11.1% |
| March | 80.7% | 83.6% | ▲ 3.7% |
| April | 63.3% | 86.4% | ▲ 36.5% |
| May | 85.5% | 95.8% | ▲ 12.1% |
| June | 86.7% | 79.6% | ▼ 8.1% |
| July | 80.3% | 96.8% | ▲ 20.5% |
| August | 78.3% | – | – |
| September | 98.2% | – | – |
| October | 100.0% | – | in progress |
| November | 86.7% | – | – |
| December | 96.8% | – | – |
| Year-to-date average (Jan–Jul) | 80.3% | 87.1% | ▲ 8.4% |
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 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 3 | ▲ 200.0% |
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 99.4% 952
- Cancelled 0.6% 6
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN ORD Denver International Airport – Chicago O'Hare International Airport | 1,426 | 5.1 min | 93.1% | 455 |
| CLT DEN Charlotte Douglas International Airport – Denver International Airport | 2,148 | 14.4 min | 80.0% | 200 |
| ORD MYR Chicago O'Hare International Airport – Myrtle Beach International Airport | 1,212 | 10.6 min | 77.4% | 124 |
| ORD BWI Chicago O'Hare International Airport – Baltimore/Washington International Thurgood Marshall Airport | 998 | 25.1 min | 71.3% | 82 |
| ORD IAD Chicago O'Hare International Airport – Washington Dulles International Airport | 945 | 1.0 min | 91.9% | 37 |
| ORD ECP Chicago O'Hare International Airport – Northwest Florida Beaches International Airport | 1,306 | 14.9 min | 78.1% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 75.0% | 0 |
| November 2024 | 29 | 29 | 86.2% | 0 |
| December 2024 | 31 | 31 | 87.1% | 0 |
| January 2025 | 31 | 31 | 87.1% | 0 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 30 | 30 | 63.3% | 0 |
| May 2025 | 62 | 62 | 85.5% | 0 |
| June 2025 | 60 | 60 | 86.7% | 0 |
| July 2025 | 62 | 61 | 80.3% | 1 |
| August 2025 | 62 | 60 | 78.3% | 2 |
| September 2025 | 54 | 54 | 98.2% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 30 | 30 | 86.7% | 0 |
| December 2025 | 31 | 31 | 96.8% | 0 |
| January 2026 | 57 | 55 | 80.0% | 2 |
| February 2026 | 55 | 55 | 87.3% | 0 |
| March 2026 | 62 | 61 | 83.6% | 1 |
| April 2026 | 59 | 59 | 86.4% | 0 |
| May 2026 | 48 | 48 | 95.8% | 0 |
| June 2026 | 54 | 54 | 79.6% | 0 |
| July 2026 | 31 | 31 | 96.8% | 0 |