UA378
UA378 (United Airlines) is a multi-stop service on 11 routes, busiest Chicago to Los Angeles. Of 930 departures recorded from October 2024 to July 2026, 86.2% left on time, according to the US BTS.
- On-time departures86.2%of 930 flights
- Average delay9.4 min
- July 202661▲ 5.2%vs July 2025
- Cancelled0.4%
- 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 | 22 | 26 | ▲ 18.2% |
| February | 20 | 43 | ▲ 115.0% |
| March | 33 | 58 | ▲ 75.8% |
| April | 60 | 30 | ▼ 50.0% |
| May | 59 | 40 | ▼ 32.2% |
| June | 56 | 57 | ▲ 1.8% |
| July | 58 | 61 | ▲ 5.2% |
| August | 56 | – | – |
| September | 57 | – | – |
| October | 56 | – | in progress |
| November | 30 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 308 | 315 | ▲ 2.3% |
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 | 77.3% | 100.0% | ▲ 29.4% |
| February | 90.0% | 95.4% | ▲ 5.9% |
| March | 93.9% | 80.7% | ▼ 14.1% |
| April | 90.0% | 100.0% | ▲ 11.1% |
| May | 83.1% | 80.0% | ▼ 3.7% |
| June | 92.9% | 69.6% | ▼ 25.0% |
| July | 70.7% | 83.1% | ▲ 17.5% |
| August | 80.4% | – | – |
| September | 89.5% | – | – |
| October | 87.5% | – | in progress |
| November | 93.3% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 85.4% | 87.0% | ▲ 1.8% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 4 |
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 99.6% 926
- Cancelled 0.4% 4
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 LAX Chicago O'Hare International Airport – Los Angeles International Airport | 2,802 | 7.2 min | 86.1% | 316 |
| BOS ORD Boston Logan International Airport – Chicago O'Hare International Airport | 1,391 | 2.5 min | 92.4% | 198 |
| PHX IAH Phoenix Sky Harbor International Airport – George Bush Intercontinental Airport | 1,620 | 6.7 min | 92.4% | 172 |
| ORD JAC Chicago O'Hare International Airport – Jackson Hole Airport | 1,866 | 27.2 min | 63.8% | 72 |
| BDL ORD Bradley International Airport – Chicago O'Hare International Airport | 1,257 | 13.9 min | 90.9% | 66 |
| LAX DEN Los Angeles International Airport – Denver International Airport | 1,385 | 22.3 min | 68.5% | 54 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 35 | 35 | 94.3% | 0 |
| November 2024 | 29 | 29 | 96.6% | 0 |
| December 2024 | 43 | 43 | 88.4% | 0 |
| January 2025 | 22 | 22 | 77.3% | 0 |
| February 2025 | 20 | 20 | 90.0% | 0 |
| March 2025 | 33 | 33 | 93.9% | 0 |
| April 2025 | 60 | 60 | 90.0% | 0 |
| May 2025 | 59 | 59 | 83.1% | 0 |
| June 2025 | 56 | 56 | 92.9% | 0 |
| July 2025 | 58 | 58 | 70.7% | 0 |
| August 2025 | 56 | 56 | 80.4% | 0 |
| September 2025 | 57 | 57 | 89.5% | 0 |
| October 2025 | 56 | 56 | 87.5% | 0 |
| November 2025 | 30 | 30 | 93.3% | 0 |
| December 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 26 | 26 | 100.0% | 0 |
| February 2026 | 43 | 43 | 95.4% | 0 |
| March 2026 | 58 | 57 | 80.7% | 1 |
| April 2026 | 30 | 30 | 100.0% | 0 |
| May 2026 | 40 | 40 | 80.0% | 0 |
| June 2026 | 57 | 56 | 69.6% | 1 |
| July 2026 | 61 | 59 | 83.1% | 2 |