UA1506
UA1506 (United Airlines) is a multi-stop service on 12 routes, busiest Denver to San Francisco. Of 619 departures recorded from September 2025 to July 2026, 76.0% left on time, according to the US BTS.
- On-time departures76.0%of 619 flights
- Average delay14.3 min
- July 202693
- Cancelled0.3%
- Legs flown under this number12
Recorded departures by month
Short series — UA1506 has only 11 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.
The most recent periods11 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 34 | – |
| February | – | 44 | – |
| March | – | 38 | – |
| April | – | 56 | – |
| May | – | 73 | – |
| June | – | 89 | – |
| July | – | 93 | – |
| August | – | – | – |
| September | 6 | – | – |
| October | 87 | – | in progress |
| November | 59 | – | – |
| December | 40 | – | – |
according to the US BTS · September 2025 → July 2026
On-time departures by month
Short series — UA1506 has only 11 months so far. Enough to show the level now, not enough to read a trend.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods11 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 87.9% | – |
| February | – | 75.0% | – |
| March | – | 83.8% | – |
| April | – | 48.2% | – |
| May | – | 64.4% | – |
| June | – | 82.0% | – |
| July | – | 80.7% | – |
| August | – | – | – |
| September | 83.3% | – | – |
| October | 79.3% | – | in progress |
| November | 71.2% | – | – |
| December | 95.0% | – | – |
according to the US BTS · September 2025 → July 2026
Average departure delay by month
Short series — UA1506 has only 11 months so far. Enough to show the level now, not enough to read a trend.
according to the US BTS · September 2025 → July 2026
Cancelled departures by month
Short series — UA1506 has only 11 months so far. Enough to show the level now, not enough to read a trend.
The most recent periods11 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | – | 0 | – |
| March | – | 1 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · September 2025 → 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 99.7% 617
- Cancelled 0.3% 2
Share of all recorded flights in the period, all legs. · Sep 25, 2025 → Jul 31, 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 |
|---|---|---|---|---|
| DEN SFO Denver International Airport – San Francisco International Airport | 1,553 | 16.2 min | 65.1% | 170 |
| SFO LAX San Francisco International Airport – Los Angeles International Airport | 543 | 13.0 min | 71.6% | 141 |
| SDF DEN Louisville Muhammad Ali International Airport – Denver International Airport | 1,644 | 5.3 min | 90.3% | 72 |
| IAD IAH Washington Dulles International Airport – George Bush Intercontinental Airport | 1,913 | 8.2 min | 90.7% | 55 |
| MCO EWR Orlando International Airport – Newark Liberty International Airport | 1,511 | 41.5 min | 70.3% | 37 |
| EWR LAS Newark Liberty International Airport – Harry Reid International Airport | 3,576 | 21.0 min | 77.8% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| September 2025 | 6 | 6 | 83.3% | 0 |
| October 2025 | 87 | 87 | 79.3% | 0 |
| November 2025 | 59 | 59 | 71.2% | 0 |
| December 2025 | 40 | 40 | 95.0% | 0 |
| January 2026 | 34 | 33 | 87.9% | 1 |
| February 2026 | 44 | 44 | 75.0% | 0 |
| March 2026 | 38 | 37 | 83.8% | 1 |
| April 2026 | 56 | 56 | 48.2% | 0 |
| May 2026 | 73 | 73 | 64.4% | 0 |
| June 2026 | 89 | 89 | 82.0% | 0 |
| July 2026 | 93 | 93 | 80.7% | 0 |