UA623
UA623 (United Airlines) is a multi-stop service on 26 routes, busiest New York to Chicago. Of 911 departures recorded from October 2024 to July 2026, 87.9% left on time, according to the US BTS.
- On-time departures87.9%of 911 flights
- Average delay6.8 min
- July 202662▲ 100.0%vs July 2025
- Cancelled2.2%
- Legs flown under this number26
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 | 46 | 31 | ▼ 32.6% |
| February | 36 | 28 | ▼ 22.2% |
| March | 31 | 60 | ▲ 93.5% |
| April | 30 | 56 | ▲ 86.7% |
| May | 30 | 56 | ▲ 86.7% |
| June | 30 | 60 | ▲ 100.0% |
| July | 31 | 62 | ▲ 100.0% |
| August | 44 | – | – |
| September | 60 | – | – |
| October | 56 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 234 | 353 | ▲ 50.9% |
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 | 91.1% | 89.7% | ▼ 1.6% |
| February | 100.0% | 92.3% | ▼ 7.7% |
| March | 96.8% | 80.4% | ▼ 17.0% |
| April | 90.0% | 92.9% | ▲ 3.2% |
| May | 93.3% | 80.4% | ▼ 13.9% |
| June | 89.7% | 83.3% | ▼ 7.1% |
| July | 89.3% | 83.1% | ▼ 7.0% |
| August | 81.4% | – | – |
| September | 86.7% | – | – |
| October | 91.1% | – | in progress |
| November | 86.7% | – | – |
| December | 86.7% | – | – |
| Year-to-date average (Jan–Jul) | 92.9% | 86.0% | ▼ 7.4% |
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 | 2 | ▲ 100.0% |
| March | 0 | 4 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 3 | 3 | 0.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 6 | 11 | ▲ 83.3% |
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 97.8% 891
- Cancelled 2.2% 20
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 |
|---|---|---|---|---|
| LGA ORD LaGuardia Airport – Chicago O'Hare International Airport | 1,177 | 4.0 min | 92.0% | 544 |
| ORD BZN Chicago O'Hare International Airport – Bozeman Yellowstone International Airport | 1,903 | 12.3 min | 77.8% | 72 |
| ORD ALB Chicago O'Hare International Airport – Albany International Airport | 1,161 | 18.2 min | 70.3% | 37 |
| ORD SEA Chicago O'Hare International Airport – Seattle–Tacoma International Airport | 2,762 | 11.6 min | 90.6% | 32 |
| ORD DEN Chicago O'Hare International Airport – Denver International Airport | 1,426 | 2.2 min | 90.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 50 | 50 | 86.0% | 0 |
| November 2024 | 24 | 24 | 100.0% | 0 |
| December 2024 | 29 | 28 | 82.1% | 1 |
| January 2025 | 46 | 45 | 91.1% | 1 |
| February 2025 | 36 | 35 | 100.0% | 1 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 30 | 30 | 93.3% | 0 |
| June 2025 | 30 | 29 | 89.7% | 1 |
| July 2025 | 31 | 28 | 89.3% | 3 |
| August 2025 | 44 | 43 | 81.4% | 1 |
| September 2025 | 60 | 60 | 86.7% | 0 |
| October 2025 | 56 | 56 | 91.1% | 0 |
| November 2025 | 30 | 30 | 86.7% | 0 |
| December 2025 | 31 | 30 | 86.7% | 1 |
| January 2026 | 31 | 29 | 89.7% | 2 |
| February 2026 | 28 | 26 | 92.3% | 2 |
| March 2026 | 60 | 56 | 80.4% | 4 |
| April 2026 | 56 | 56 | 92.9% | 0 |
| May 2026 | 56 | 56 | 80.4% | 0 |
| June 2026 | 60 | 60 | 83.3% | 0 |
| July 2026 | 62 | 59 | 83.1% | 3 |