UA1278
UA1278 (United Airlines) is a multi-stop service on 16 routes, busiest Sacramento to Chicago. Of 557 departures recorded from October 2024 to May 2026, 81.2% left on time, according to the US BTS.
- On-time departures81.2%of 557 flights
- Average delay12.3 min
- May 202631▲ 82.4%vs May 2025
- Cancelled0.7%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 25 | 26 | ▲ 4.0% |
| February | 28 | 28 | 0.0% |
| March | 28 | 52 | ▲ 85.7% |
| April | 30 | 57 | ▲ 90.0% |
| May | 17 | 31 | ▲ 82.4% |
| June | – | – | – |
| July | – | – | – |
| August | 13 | – | – |
| September | 36 | – | – |
| October | 56 | – | in progress |
| November | 29 | – | – |
| December | 17 | – | – |
| Year to date (Jan–May) | 128 | 194 | ▲ 51.6% |
according to the US BTS · October 2024 → May 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 96.0% | 76.9% | ▼ 19.9% |
| February | 85.7% | 92.9% | ▲ 8.3% |
| March | 81.5% | 69.2% | ▼ 15.0% |
| April | 90.0% | 77.2% | ▼ 14.2% |
| May | 64.7% | 77.4% | ▲ 19.6% |
| June | – | – | – |
| July | – | – | – |
| August | 76.9% | – | – |
| September | 91.7% | – | – |
| October | 78.2% | – | in progress |
| November | 88.9% | – | – |
| December | 94.1% | – | – |
| Year-to-date average (Jan–May) | 83.6% | 78.7% | ▼ 5.8% |
according to the US BTS · October 2024 → May 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → May 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | – | – | – |
| July | – | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–May) | 1 | 0 | ▼ 100.0% |
according to the US BTS · October 2024 → May 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 99.3% 553
- Cancelled 0.7% 4
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → May 20, 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 |
|---|---|---|---|---|
| SMF ORD Sacramento International Airport – Chicago O'Hare International Airport | 2,860 | 6.7 min | 88.8% | 218 |
| LAS EWR Harry Reid International Airport – Newark Liberty International Airport | 3,576 | 2.7 min | 91.4% | 58 |
| IAH PHL George Bush Intercontinental Airport – Philadelphia International Airport | 2,130 | 15.0 min | 70.3% | 37 |
| EWR BZN Newark Liberty International Airport – Bozeman Yellowstone International Airport | 3,021 | 2.1 min | 86.5% | 37 |
| GSP ORD Greenville-Spartanburg International Airport – Chicago O'Hare International Airport | 930 | 7.3 min | 87.5% | 32 |
| ORD LGA Chicago O'Hare International Airport – LaGuardia Airport | 1,177 | 25.1 min | 58.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 65.0% | 0 |
| November 2024 | 30 | 30 | 70.0% | 0 |
| December 2024 | 34 | 34 | 91.2% | 0 |
| January 2025 | 25 | 25 | 96.0% | 0 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 28 | 27 | 81.5% | 1 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 17 | 17 | 64.7% | 0 |
| August 2025 | 13 | 13 | 76.9% | 0 |
| September 2025 | 36 | 36 | 91.7% | 0 |
| October 2025 | 56 | 55 | 78.2% | 1 |
| November 2025 | 29 | 27 | 88.9% | 2 |
| December 2025 | 17 | 17 | 94.1% | 0 |
| January 2026 | 26 | 26 | 76.9% | 0 |
| February 2026 | 28 | 28 | 92.9% | 0 |
| March 2026 | 52 | 52 | 69.2% | 0 |
| April 2026 | 57 | 57 | 77.2% | 0 |
| May 2026 | 31 | 31 | 77.4% | 0 |