UA424
UA424 (United Airlines) is a multi-stop service on 28 routes, busiest San Francisco to San Antonio. Of 671 departures recorded from October 2024 to July 2026, 79.8% left on time, according to the US BTS.
- On-time departures79.8%of 671 flights
- Average delay12.2 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.2%
- Legs flown under this number28
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 23 | 31 | ▲ 34.8% |
| February | 24 | 28 | ▲ 16.7% |
| March | 20 | 42 | ▲ 110.0% |
| April | 30 | 30 | 0.0% |
| May | 52 | 42 | ▼ 19.2% |
| June | 30 | 54 | ▲ 80.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 25 | – | in progress |
| November | – | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 210 | 258 | ▲ 22.9% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 91.3% | 87.1% | ▼ 4.6% |
| February | 87.5% | 73.1% | ▼ 16.5% |
| March | 80.0% | 81.0% | ▲ 1.2% |
| April | 70.0% | 73.3% | ▲ 4.8% |
| May | 88.5% | 90.2% | ▲ 2.0% |
| June | 83.3% | 86.8% | ▲ 4.2% |
| July | 83.9% | 44.4% | ▼ 47.0% |
| August | 71.0% | – | – |
| September | 80.0% | – | – |
| October | 40.0% | – | in progress |
| November | – | – | – |
| December | 90.0% | – | – |
| Year-to-date average (Jan–Jul) | 83.5% | 76.6% | ▼ 8.3% |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 1 | – |
| July | 0 | 4 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 8 |
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 98.8% 663
- Cancelled 1.2% 8
Share of all recorded flights in the period, all legs. · Oct 27, 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 SAT San Francisco International Airport – San Antonio International Airport | 2,382 | 10.7 min | 77.8% | 144 |
| AUS LAX Austin Bergstrom International Airport – Los Angeles International Airport | 1,995 | 6.2 min | 85.5% | 55 |
| DEN RSW Denver International Airport – Southwest Florida International Airport | 2,584 | 13.1 min | 84.1% | 44 |
| AUS SFO Austin Bergstrom International Airport – San Francisco International Airport | 2,417 | 26.9 min | 81.1% | 37 |
| MIA SFO Miami International Airport – San Francisco International Airport | 4,154 | -2.4 min | 97.2% | 36 |
| EWR DFW Newark Liberty International Airport – Dallas Fort Worth International Airport | 2,205 | 44.1 min | 50.0% | 36 |
| BNA ORD Nashville International Airport – Chicago O'Hare International Airport | 660 | -0.5 min | 94.1% | 35 |
| DEN RDM Denver International Airport – Roberts Field | 1,442 | 23.9 min | 65.6% | 32 |
| DFW IAH Dallas Fort Worth International Airport – George Bush Intercontinental Airport | 362 | 15.7 min | 83.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 7 | 7 | 100.0% | 0 |
| November 2024 | 47 | 47 | 83.0% | 0 |
| December 2024 | 33 | 33 | 81.8% | 0 |
| January 2025 | 23 | 23 | 91.3% | 0 |
| February 2025 | 24 | 24 | 87.5% | 0 |
| March 2025 | 20 | 20 | 80.0% | 0 |
| April 2025 | 30 | 30 | 70.0% | 0 |
| May 2025 | 52 | 52 | 88.5% | 0 |
| June 2025 | 30 | 30 | 83.3% | 0 |
| July 2025 | 31 | 31 | 83.9% | 0 |
| August 2025 | 31 | 31 | 71.0% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 25 | 25 | 40.0% | 0 |
| December 2025 | 30 | 30 | 90.0% | 0 |
| January 2026 | 31 | 31 | 87.1% | 0 |
| February 2026 | 28 | 26 | 73.1% | 2 |
| March 2026 | 42 | 42 | 81.0% | 0 |
| April 2026 | 30 | 30 | 73.3% | 0 |
| May 2026 | 42 | 41 | 90.2% | 1 |
| June 2026 | 54 | 53 | 86.8% | 1 |
| July 2026 | 31 | 27 | 44.4% | 4 |