UA509
UA509 (United Airlines) is a multi-stop service on 10 routes, busiest Honolulu to Chicago. Of 243 departures recorded from October 2024 to March 2026, 82.2% left on time, according to the US BTS.
- On-time departures82.2%of 243 flights
- Average delay9.5 min
- March 202628▲ 7.7%vs March 2025
- Cancelled0.8%
- Legs flown under this number10
Recorded departures by month
Short series — UA509 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 periods7 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 31 | 0.0% |
| February | 22 | 28 | ▲ 27.3% |
| March | 26 | 28 | ▲ 7.7% |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 14 | – | – |
| Year to date (Jan–Mar) | 79 | 87 | ▲ 10.1% |
according to the US BTS · October 2024 → March 2026
On-time departures by month
Short series — UA509 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 periods7 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 80.7% | 86.7% | ▲ 7.5% |
| February | 68.2% | 89.3% | ▲ 31.0% |
| March | 80.8% | 85.2% | ▲ 5.5% |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 71.4% | – | – |
| Year-to-date average (Jan–Mar) | 76.5% | 87.1% | ▲ 13.7% |
according to the US BTS · October 2024 → March 2026
Average departure delay by month
Short series — UA509 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 · October 2024 → March 2026
Cancelled departures by month
Short series — UA509 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 periods7 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
| Year to date (Jan–Mar) | 0 | 2 |
according to the US BTS · October 2024 → March 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% 241
- Cancelled 0.8% 2
Share of all recorded flights in the period, all legs. · Oct 27, 2024 → Mar 28, 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 |
|---|---|---|---|---|
| HNL ORD Daniel K. Inouye International Airport – Chicago O'Hare International Airport | 6,819 | 17.9 min | 73.2% | 41 |
| IAD IAH Washington Dulles International Airport – George Bush Intercontinental Airport | 1,913 | 1.1 min | 89.2% | 37 |
| EWR SNA Newark Liberty International Airport – John Wayne Orange County International Airport | 3,908 | 4.4 min | 83.3% | 37 |
| EWR PDX Newark Liberty International Airport – Portland International Airport | 3,907 | 13.1 min | 84.4% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 5 | 5 | 80.0% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 28 | 28 | 78.6% | 0 |
| January 2025 | 31 | 31 | 80.7% | 0 |
| February 2025 | 22 | 22 | 68.2% | 0 |
| March 2025 | 26 | 26 | 80.8% | 0 |
| December 2025 | 14 | 14 | 71.4% | 0 |
| January 2026 | 31 | 30 | 86.7% | 1 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 28 | 27 | 85.2% | 1 |