UA1878
UA1878 (United Airlines) is a multi-stop service on 17 routes, busiest Austin to Chicago. Of 1,014 departures recorded from October 2024 to July 2026, 89.0% left on time, according to the US BTS.
- On-time departures89.0%of 1,014 flights
- Average delay5.7 min
- July 202631▼ 40.4%vs July 2025
- Cancelled0.8%
- Legs flown under this number17
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 | 54 | 45 | ▼ 16.7% |
| February | 36 | 50 | ▲ 38.9% |
| March | 59 | 34 | ▼ 42.4% |
| April | 86 | 41 | ▼ 52.3% |
| May | 60 | 66 | ▲ 10.0% |
| June | 52 | 30 | ▼ 42.3% |
| July | 52 | 31 | ▼ 40.4% |
| August | 53 | – | – |
| September | 30 | – | – |
| October | 22 | – | in progress |
| November | 24 | – | – |
| December | 37 | – | – |
| Year to date (Jan–Jul) | 399 | 297 | ▼ 25.6% |
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 | 83.3% | 87.8% | ▲ 5.4% |
| February | 72.2% | 94.0% | ▲ 30.2% |
| March | 84.8% | 97.0% | ▲ 14.4% |
| April | 95.3% | 87.5% | ▼ 8.2% |
| May | 90.0% | 83.3% | ▼ 7.4% |
| June | 86.5% | 96.6% | ▲ 11.6% |
| July | 86.5% | 100.0% | ▲ 15.6% |
| August | 90.6% | – | – |
| September | 100.0% | – | – |
| October | 95.5% | – | in progress |
| November | 87.5% | – | – |
| December | 94.6% | – | – |
| Year-to-date average (Jan–Jul) | 85.5% | 92.3% | ▲ 7.9% |
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 | 4 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
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 99.2% 1,006
- Cancelled 0.8% 8
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 |
|---|---|---|---|---|
| AUS ORD Austin Bergstrom International Airport – Chicago O'Hare International Airport | 1,574 | 2.0 min | 94.9% | 394 |
| ORD SFO Chicago O'Hare International Airport – San Francisco International Airport | 2,964 | 10.7 min | 83.3% | 311 |
| ORD CLE Chicago O'Hare International Airport – Cleveland Hopkins International Airport | 507 | 12.2 min | 77.4% | 53 |
| SFO LAS San Francisco International Airport – Harry Reid International Airport | 665 | -2.8 min | 96.9% | 32 |
| GRR ORD Gerald R. Ford International Airport – Chicago O'Hare International Airport | 220 | 3.5 min | 87.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 52 | 52 | 88.5% | 0 |
| November 2024 | 54 | 54 | 85.2% | 0 |
| December 2024 | 46 | 46 | 82.6% | 0 |
| January 2025 | 54 | 54 | 83.3% | 0 |
| February 2025 | 36 | 36 | 72.2% | 0 |
| March 2025 | 59 | 59 | 84.8% | 0 |
| April 2025 | 86 | 85 | 95.3% | 1 |
| May 2025 | 60 | 60 | 90.0% | 0 |
| June 2025 | 52 | 52 | 86.5% | 0 |
| July 2025 | 52 | 52 | 86.5% | 0 |
| August 2025 | 53 | 53 | 90.6% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 22 | 22 | 95.5% | 0 |
| November 2025 | 24 | 24 | 87.5% | 0 |
| December 2025 | 37 | 37 | 94.6% | 0 |
| January 2026 | 45 | 41 | 87.8% | 4 |
| February 2026 | 50 | 50 | 94.0% | 0 |
| March 2026 | 34 | 33 | 97.0% | 1 |
| April 2026 | 41 | 40 | 87.5% | 1 |
| May 2026 | 66 | 66 | 83.3% | 0 |
| June 2026 | 30 | 29 | 96.6% | 1 |
| July 2026 | 31 | 31 | 100.0% | 0 |