UA1596
UA1596 (United Airlines) is a multi-stop service on 16 routes, busiest San Francisco to Denver. Of 851 departures recorded from October 2024 to July 2026, 80.2% left on time, according to the US BTS.
- On-time departures80.2%of 851 flights
- Average delay11.3 min
- July 202693
- Cancelled0.4%
- 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 periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 49 | 55 | ▲ 12.2% |
| April | 30 | 31 | ▲ 3.3% |
| May | 31 | 73 | ▲ 135.5% |
| June | 25 | 90 | ▲ 260.0% |
| July | – | 93 | – |
| August | – | – | – |
| September | 55 | – | – |
| October | 44 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
according to the US BTS · October 2024 → July 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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 83.9% | 74.2% | ▼ 11.5% |
| February | 89.3% | 78.6% | ▼ 12.0% |
| March | 83.7% | 81.8% | ▼ 2.2% |
| April | 76.7% | 90.3% | ▲ 17.8% |
| May | 93.6% | 72.2% | ▼ 22.8% |
| June | 80.0% | 67.8% | ▼ 15.3% |
| July | – | 65.2% | – |
| August | – | – | – |
| September | 85.5% | – | – |
| October | 84.1% | – | in progress |
| November | 96.7% | – | – |
| December | 73.3% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | – | 1 | – |
| August | – | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
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 99.6% 848
- Cancelled 0.4% 3
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
9| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO DEN San Francisco International Airport – Denver International Airport | 1,553 | 18.6 min | 71.7% | 226 |
| DEN MCI Denver International Airport – Kansas City International Airport | 855 | 20.5 min | 69.8% | 117 |
| PHL SFO Philadelphia International Airport – San Francisco International Airport | 4,048 | 0.1 min | 93.8% | 97 |
| PDX SFO Portland International Airport – San Francisco International Airport | 886 | 16.3 min | 77.5% | 72 |
| TPA ORD Tampa International Airport – Chicago O'Hare International Airport | 1,631 | 1.3 min | 91.1% | 56 |
| BWI SFO Baltimore/Washington International Thurgood Marshall Airport – San Francisco International Airport | 3,944 | -1.7 min | 92.3% | 53 |
| EUG SFO Eugene Airport – San Francisco International Airport | 727 | 2.6 min | 82.9% | 35 |
| SFO CMH San Francisco International Airport – John Glenn Columbus International Airport | 3,403 | 20.7 min | 71.9% | 32 |
| LAX SFO Los Angeles International Airport – San Francisco International Airport | 543 | 7.2 min | 83.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 35 | 35 | 91.4% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 31 | 31 | 100.0% | 0 |
| January 2025 | 31 | 31 | 83.9% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 49 | 49 | 83.7% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 31 | 31 | 93.6% | 0 |
| June 2025 | 25 | 25 | 80.0% | 0 |
| September 2025 | 55 | 55 | 85.5% | 0 |
| October 2025 | 44 | 44 | 84.1% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 30 | 73.3% | 1 |
| January 2026 | 31 | 31 | 74.2% | 0 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 55 | 55 | 81.8% | 0 |
| April 2026 | 31 | 31 | 90.3% | 0 |
| May 2026 | 73 | 72 | 72.2% | 1 |
| June 2026 | 90 | 90 | 67.8% | 0 |
| July 2026 | 93 | 92 | 65.2% | 1 |