UA1515
UA1515 (United Airlines) is a multi-stop service on 13 routes, busiest San Francisco to Kansas City. Of 501 departures recorded from October 2024 to July 2026, 76.0% left on time, according to the US BTS.
- On-time departures76.0%of 501 flights
- Average delay17.0 min
- July 202630
- Cancelled0.2%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 44 | 26 | ▼ 40.9% |
| February | 36 | 24 | ▼ 33.3% |
| March | 5 | 29 | ▲ 480.0% |
| April | – | 18 | – |
| May | 20 | 31 | ▲ 55.0% |
| June | – | 30 | – |
| July | – | 30 | – |
| August | 13 | – | – |
| September | 29 | – | – |
| October | 27 | – | in progress |
| November | 55 | – | – |
| December | 18 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 81.8% | 88.0% | ▲ 7.6% |
| February | 94.4% | 100.0% | ▲ 5.9% |
| March | 100.0% | 96.6% | ▼ 3.5% |
| April | – | 61.1% | – |
| May | 35.0% | 38.7% | ▲ 10.6% |
| June | – | 26.7% | – |
| July | – | 30.0% | – |
| August | 61.5% | – | – |
| September | 75.9% | – | – |
| October | 96.3% | – | in progress |
| November | 87.3% | – | – |
| December | 100.0% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
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 99.8% 500
- Cancelled 0.2% 1
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO MCI San Francisco International Airport – Kansas City International Airport | 2,406 | 45.2 min | 37.8% | 111 |
| MCI ORD Kansas City International Airport – Chicago O'Hare International Airport | 647 | 4.9 min | 89.6% | 96 |
| SFO MSY San Francisco International Airport – Louis Armstrong New Orleans International Airport | 3,069 | 1.4 min | 92.4% | 66 |
| SLC SFO Salt Lake City International Airport – San Francisco International Airport | 962 | 2.2 min | 94.3% | 53 |
| IAH IAD George Bush Intercontinental Airport – Washington Dulles International Airport | 1,913 | 3.3 min | 91.7% | 37 |
| EWR FLL Newark Liberty International Airport – Fort Lauderdale Hollywood International Airport | 1,717 | 13.9 min | 67.6% | 37 |
| ORD LAX Chicago O'Hare International Airport – Los Angeles International Airport | 2,802 | 5.2 min | 87.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 28 | 28 | 89.3% | 0 |
| December 2024 | 18 | 18 | 100.0% | 0 |
| January 2025 | 44 | 44 | 81.8% | 0 |
| February 2025 | 36 | 36 | 94.4% | 0 |
| March 2025 | 5 | 5 | 100.0% | 0 |
| May 2025 | 20 | 20 | 35.0% | 0 |
| August 2025 | 13 | 13 | 61.5% | 0 |
| September 2025 | 29 | 29 | 75.9% | 0 |
| October 2025 | 27 | 27 | 96.3% | 0 |
| November 2025 | 55 | 55 | 87.3% | 0 |
| December 2025 | 18 | 18 | 100.0% | 0 |
| January 2026 | 26 | 25 | 88.0% | 1 |
| February 2026 | 24 | 24 | 100.0% | 0 |
| March 2026 | 29 | 29 | 96.6% | 0 |
| April 2026 | 18 | 18 | 61.1% | 0 |
| May 2026 | 31 | 31 | 38.7% | 0 |
| June 2026 | 30 | 30 | 26.7% | 0 |
| July 2026 | 30 | 30 | 30.0% | 0 |