UA583
UA583 (United Airlines) is a multi-stop service on 21 routes, busiest San Francisco to Orlando. Of 754 departures recorded from October 2024 to July 2026, 81.3% left on time, according to the US BTS.
- On-time departures81.3%of 754 flights
- Average delay13.1 min
- July 202630▼ 3.2%vs July 2025
- Cancelled1.2%
- Legs flown under this number21
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 31 | 31 | 0.0% |
| February | 40 | 26 | ▼ 35.0% |
| March | 36 | 56 | ▲ 55.6% |
| April | 56 | 55 | ▼ 1.8% |
| May | 30 | 31 | ▲ 3.3% |
| June | 30 | 36 | ▲ 20.0% |
| July | 31 | 30 | ▼ 3.2% |
| August | 45 | – | – |
| September | 45 | – | – |
| October | 26 | – | in progress |
| November | 24 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Jul) | 254 | 265 | ▲ 4.3% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 70.0% | 87.1% | ▲ 24.4% |
| February | 72.5% | 84.6% | ▲ 16.7% |
| March | 86.1% | 85.5% | ▼ 0.8% |
| April | 79.6% | 89.1% | ▲ 11.9% |
| May | 57.1% | 96.8% | ▲ 69.4% |
| June | 93.3% | 94.4% | ▲ 1.2% |
| July | 61.3% | 48.2% | ▼ 21.4% |
| August | 88.9% | – | – |
| September | 95.6% | – | – |
| October | 88.5% | – | in progress |
| November | 91.7% | – | – |
| December | 60.0% | – | – |
| Year-to-date average (Jan–Jul) | 74.3% | 83.7% | ▲ 12.6% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 2 | 0 | ▼ 100.0% |
| May | 2 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 3 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 4 | ▼ 20.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.8% 745
- Cancelled 1.2% 9
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO MCO San Francisco International Airport – Orlando International Airport | 3,929 | -0.8 min | 97.4% | 113 |
| LAS EWR Harry Reid International Airport – Newark Liberty International Airport | 3,576 | 21.0 min | 83.6% | 113 |
| EWR MIA Newark Liberty International Airport – Miami International Airport | 1,750 | 16.7 min | 71.4% | 106 |
| MCO ORD Orlando International Airport – Chicago O'Hare International Airport | 1,620 | 15.4 min | 79.1% | 68 |
| IAD CLE Washington Dulles International Airport – Cleveland Hopkins International Airport | 463 | 3.4 min | 92.7% | 55 |
| MCO EWR Orlando International Airport – Newark Liberty International Airport | 1,511 | 51.8 min | 51.5% | 36 |
| DEN PSP Denver International Airport – Palm Springs International Airport | 1,247 | 16.9 min | 66.7% | 36 |
| ELP IAH El Paso International Airport – George Bush Intercontinental Airport | 1,072 | 1.3 min | 87.5% | 32 |
| CLE IAD Cleveland Hopkins International Airport – Washington Dulles International Airport | 463 | -2.0 min | 93.6% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 30 | 60.0% | 0 |
| December 2024 | 30 | 30 | 73.3% | 0 |
| January 2025 | 31 | 30 | 70.0% | 1 |
| February 2025 | 40 | 40 | 72.5% | 0 |
| March 2025 | 36 | 36 | 86.1% | 0 |
| April 2025 | 56 | 54 | 79.6% | 2 |
| May 2025 | 30 | 28 | 57.1% | 2 |
| June 2025 | 30 | 30 | 93.3% | 0 |
| July 2025 | 31 | 31 | 61.3% | 0 |
| August 2025 | 45 | 45 | 88.9% | 0 |
| September 2025 | 45 | 45 | 95.6% | 0 |
| October 2025 | 26 | 26 | 88.5% | 0 |
| November 2025 | 24 | 24 | 91.7% | 0 |
| December 2025 | 15 | 15 | 60.0% | 0 |
| January 2026 | 31 | 31 | 87.1% | 0 |
| February 2026 | 26 | 26 | 84.6% | 0 |
| March 2026 | 56 | 55 | 85.5% | 1 |
| April 2026 | 55 | 55 | 89.1% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 36 | 36 | 94.4% | 0 |
| July 2026 | 30 | 27 | 48.2% | 3 |