UA1159
UA1159 (United Airlines) is a multi-stop service on 9 routes, busiest New York to Chicago. Of 239 departures recorded from January 2025 to May 2026, 84.8% left on time, according to the US BTS.
- On-time departures84.8%of 239 flights
- Average delay7.7 min
- May 202620▼ 4.8%vs May 2025
- Cancelled0.8%
- Legs flown under this number9
Recorded departures by month
Short series — UA1159 has only 10 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods10 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 25 | 26 | ▲ 4.0% |
| February | 28 | 27 | ▼ 3.6% |
| March | 7 | 7 | 0.0% |
| April | 30 | 48 | ▲ 60.0% |
| May | 21 | 20 | ▼ 4.8% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–May) | 111 | 128 | ▲ 15.3% |
according to the US BTS · January 2025 → May 2026
On-time departures by month
Short series — UA1159 has only 10 months so far. Enough to show the level now, not enough to read a trend.
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 periods10 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 91.7% | 88.0% | ▼ 4.0% |
| February | 78.6% | 88.9% | ▲ 13.1% |
| March | 100.0% | 85.7% | ▼ 14.3% |
| April | 93.3% | 85.4% | ▼ 8.5% |
| May | 61.9% | 80.0% | ▲ 29.2% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year-to-date average (Jan–May) | 85.1% | 85.6% | ▲ 0.6% |
according to the US BTS · January 2025 → May 2026
Average departure delay by month
Short series — UA1159 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · January 2025 → May 2026
Cancelled departures by month
Short series — UA1159 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods10 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 1 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–May) | 1 | 1 | 0.0% |
according to the US BTS · January 2025 → 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 99.2% 237
- Cancelled 0.8% 2
Share of all recorded flights in the period, all legs. · Jan 7, 2025 → May 20, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LGA ORD LaGuardia Airport – Chicago O'Hare International Airport | 1,177 | 10.8 min | 86.0% | 58 |
| IAD SEA Washington Dulles International Airport – Seattle–Tacoma International Airport | 3,702 | 4.9 min | 88.9% | 37 |
| IAD ORF Washington Dulles International Airport – Norfolk International Airport | 253 | 5.5 min | 81.3% | 32 |
| FLL EWR Fort Lauderdale Hollywood International Airport – Newark Liberty International Airport | 1,717 | 2.2 min | 93.8% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| January 2025 | 25 | 24 | 91.7% | 1 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 7 | 7 | 100.0% | 0 |
| April 2025 | 30 | 30 | 93.3% | 0 |
| May 2025 | 21 | 21 | 61.9% | 0 |
| January 2026 | 26 | 25 | 88.0% | 1 |
| February 2026 | 27 | 27 | 88.9% | 0 |
| March 2026 | 7 | 7 | 85.7% | 0 |
| April 2026 | 48 | 48 | 85.4% | 0 |
| May 2026 | 20 | 20 | 80.0% | 0 |