UA2251
UA2251 (United Airlines) is a multi-stop service on 8 routes, busiest Chicago to Pittsburgh. Of 422 departures recorded from October 2024 to July 2026, 85.3% left on time, according to the US BTS.
- On-time departures85.3%of 422 flights
- Average delay10.0 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.2%
- Legs flown under this number8
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 4 | 3 | ▼ 25.0% |
| April | 60 | 26 | ▼ 56.7% |
| May | 52 | 31 | ▼ 40.4% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 37 | – | – |
| September | 47 | – | – |
| October | 25 | – | in progress |
| November | – | – | – |
| December | – | – | – |
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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 75.0% | 66.7% | ▼ 11.1% |
| April | 88.3% | 80.8% | ▼ 8.6% |
| May | 90.4% | 80.7% | ▼ 10.8% |
| June | 80.0% | 80.0% | 0.0% |
| July | 80.7% | 83.9% | ▲ 4.0% |
| August | 94.6% | – | – |
| September | 89.1% | – | – |
| October | 84.0% | – | in progress |
| November | – | – | – |
| December | – | – | – |
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 periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | – | – | – |
| December | – | – | – |
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 99.8% 421
- Cancelled 0.2% 1
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 |
|---|---|---|---|---|
| ORD PIT Chicago O'Hare International Airport – Pittsburgh International Airport | 662 | 5.8 min | 87.2% | 203 |
| ORD SFO Chicago O'Hare International Airport – San Francisco International Airport | 2,964 | 18.9 min | 79.0% | 100 |
| BOS ORD Boston Logan International Airport – Chicago O'Hare International Airport | 1,391 | 4.9 min | 87.7% | 57 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 15 | 15 | 80.0% | 0 |
| March 2025 | 4 | 4 | 75.0% | 0 |
| April 2025 | 60 | 60 | 88.3% | 0 |
| May 2025 | 52 | 52 | 90.4% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 31 | 31 | 80.7% | 0 |
| August 2025 | 37 | 37 | 94.6% | 0 |
| September 2025 | 47 | 46 | 89.1% | 1 |
| October 2025 | 25 | 25 | 84.0% | 0 |
| March 2026 | 3 | 3 | 66.7% | 0 |
| April 2026 | 26 | 26 | 80.8% | 0 |
| May 2026 | 31 | 31 | 80.7% | 0 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 31 | 31 | 83.9% | 0 |