UA455
UA455 (United Airlines) is a multi-stop service on 16 routes, busiest Baltimore to Chicago. Of 957 departures recorded from October 2024 to July 2026, 89.5% left on time, according to the US BTS.
- On-time departures89.5%of 957 flights
- Average delay4.5 min
- July 202662▲ 100.0%vs July 2025
- Cancelled1.3%
- Legs flown under this number16
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 | 34 | 85 | ▲ 150.0% |
| February | 42 | 67 | ▲ 59.5% |
| March | 35 | 35 | 0.0% |
| April | 30 | 31 | ▲ 3.3% |
| May | 37 | 62 | ▲ 67.6% |
| June | 5 | 60 | ▲ 1,100.0% |
| July | 31 | 62 | ▲ 100.0% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 37 | – | in progress |
| November | 59 | – | – |
| December | 71 | – | – |
| Year to date (Jan–Jul) | 214 | 402 | ▲ 87.9% |
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 | 93.9% | 82.9% | ▼ 11.7% |
| February | 95.2% | 91.0% | ▼ 4.4% |
| March | 94.3% | 88.2% | ▼ 6.4% |
| April | 96.7% | 90.3% | ▼ 6.6% |
| May | 94.6% | 83.9% | ▼ 11.3% |
| June | 100.0% | 84.5% | ▼ 15.5% |
| July | 96.8% | 86.7% | ▼ 10.4% |
| August | 87.5% | – | – |
| September | 83.3% | – | – |
| October | 100.0% | – | in progress |
| November | 83.9% | – | – |
| December | 91.6% | – | – |
| Year-to-date average (Jan–Jul) | 95.9% | 86.8% | ▼ 9.5% |
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 | 3 | ▲ 200.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| 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 98.7% 945
- Cancelled 1.3% 12
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 |
|---|---|---|---|---|
| BWI ORD Baltimore/Washington International Thurgood Marshall Airport – Chicago O'Hare International Airport | 998 | 1.4 min | 93.3% | 380 |
| ORD PHX Chicago O'Hare International Airport – Phoenix Sky Harbor International Airport | 2,313 | 9.5 min | 83.8% | 255 |
| PIT ORD Pittsburgh International Airport – Chicago O'Hare International Airport | 662 | 5.8 min | 90.8% | 113 |
| ORD MCO Chicago O'Hare International Airport – Orlando International Airport | 1,620 | 7.1 min | 85.1% | 87 |
| PHX EWR Phoenix Sky Harbor International Airport – Newark Liberty International Airport | 3,425 | 2.8 min | 83.3% | 37 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 22 | 22 | 95.5% | 0 |
| November 2024 | 49 | 49 | 89.8% | 0 |
| December 2024 | 41 | 41 | 87.8% | 0 |
| January 2025 | 34 | 33 | 93.9% | 1 |
| February 2025 | 42 | 42 | 95.2% | 0 |
| March 2025 | 35 | 35 | 94.3% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 37 | 37 | 94.6% | 0 |
| June 2025 | 5 | 5 | 100.0% | 0 |
| July 2025 | 31 | 31 | 96.8% | 0 |
| August 2025 | 32 | 32 | 87.5% | 0 |
| September 2025 | 30 | 30 | 83.3% | 0 |
| October 2025 | 37 | 37 | 100.0% | 0 |
| November 2025 | 59 | 56 | 83.9% | 3 |
| December 2025 | 71 | 71 | 91.6% | 0 |
| January 2026 | 85 | 82 | 82.9% | 3 |
| February 2026 | 67 | 67 | 91.0% | 0 |
| March 2026 | 35 | 34 | 88.2% | 1 |
| April 2026 | 31 | 31 | 90.3% | 0 |
| May 2026 | 62 | 62 | 83.9% | 0 |
| June 2026 | 60 | 58 | 84.5% | 2 |
| July 2026 | 62 | 60 | 86.7% | 2 |