UA1989
UA1989 (United Airlines) is a multi-stop service on 11 routes, busiest Chicago to Boston. Of 824 departures recorded from October 2024 to July 2026, 71.4% left on time, according to the US BTS.
- On-time departures71.4%of 824 flights
- Average delay25.6 min
- July 202658▲ 93.3%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 | 36 | ▲ 16.1% |
| February | 28 | 45 | ▲ 60.7% |
| March | 55 | 38 | ▼ 30.9% |
| April | 30 | 55 | ▲ 83.3% |
| May | 31 | 31 | 0.0% |
| June | 30 | 35 | ▲ 16.7% |
| July | 30 | 58 | ▲ 93.3% |
| August | 45 | – | – |
| September | 36 | – | – |
| October | 56 | – | in progress |
| November | 29 | – | – |
| December | 45 | – | – |
| Year to date (Jan–Jul) | 235 | 298 | ▲ 26.8% |
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 | 86.7% | 61.8% | ▼ 28.7% |
| February | 77.8% | 88.1% | ▲ 13.3% |
| March | 81.8% | 65.8% | ▼ 19.6% |
| April | 82.8% | 72.7% | ▼ 12.1% |
| May | 67.7% | 77.4% | ▲ 14.3% |
| June | 63.3% | 52.9% | ▼ 16.4% |
| July | 46.7% | 70.9% | ▲ 51.9% |
| August | 70.5% | – | – |
| September | 66.7% | – | – |
| October | 55.4% | – | in progress |
| November | 58.6% | – | – |
| December | 75.6% | – | – |
| Year-to-date average (Jan–Jul) | 72.4% | 70.0% | ▼ 3.4% |
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 | 1 | 2 | ▲ 100.0% |
| February | 1 | 3 | ▲ 200.0% |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 3 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 9 | ▲ 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 98.4% 811
- Cancelled 1.6% 13
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 |
|---|---|---|---|---|
| ORD BOS Chicago O'Hare International Airport – Boston Logan International Airport | 1,391 | 25.9 min | 66.3% | 407 |
| ORD RDU Chicago O'Hare International Airport – Raleigh-Durham International Airport | 1,039 | 43.5 min | 65.0% | 125 |
| FAT DEN Fresno Yosemite International Airport – Denver International Airport | 1,355 | 13.9 min | 86.1% | 86 |
| BOS ORD Boston Logan International Airport – Chicago O'Hare International Airport | 1,391 | 24.8 min | 70.3% | 37 |
| DSM ORD Des Moines International Airport – Chicago O'Hare International Airport | 480 | 20.7 min | 83.3% | 32 |
| TUS ORD Tucson International Airport – Chicago O'Hare International Airport | 2,309 | 19.3 min | 64.5% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 29 | 29 | 93.1% | 0 |
| December 2024 | 31 | 31 | 77.4% | 0 |
| January 2025 | 31 | 30 | 86.7% | 1 |
| February 2025 | 28 | 27 | 77.8% | 1 |
| March 2025 | 55 | 55 | 81.8% | 0 |
| April 2025 | 30 | 29 | 82.8% | 1 |
| May 2025 | 31 | 31 | 67.7% | 0 |
| June 2025 | 30 | 30 | 63.3% | 0 |
| July 2025 | 30 | 30 | 46.7% | 0 |
| August 2025 | 45 | 44 | 70.5% | 1 |
| September 2025 | 36 | 36 | 66.7% | 0 |
| October 2025 | 56 | 56 | 55.4% | 0 |
| November 2025 | 29 | 29 | 58.6% | 0 |
| December 2025 | 45 | 45 | 75.6% | 0 |
| January 2026 | 36 | 34 | 61.8% | 2 |
| February 2026 | 45 | 42 | 88.1% | 3 |
| March 2026 | 38 | 38 | 65.8% | 0 |
| April 2026 | 55 | 55 | 72.7% | 0 |
| May 2026 | 31 | 31 | 77.4% | 0 |
| June 2026 | 35 | 34 | 52.9% | 1 |
| July 2026 | 58 | 55 | 70.9% | 3 |