WN1529
WN1529 (Southwest Airlines) is a multi-stop service on 37 routes, busiest Denver to San Diego. Of 675 departures recorded from October 2024 to July 2026, 78.0% left on time, according to the US BTS.
- On-time departures78.0%of 675 flights
- Average delay10.4 min
- July 202635▲ 9.4%vs July 2025
- Cancelled0.9%
- Legs flown under this number37
Recorded departures by month
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 | 46 | 17 | ▼ 63.0% |
| February | 45 | 34 | ▼ 24.4% |
| March | 42 | 31 | ▼ 26.2% |
| April | 47 | 30 | ▼ 36.2% |
| May | 52 | 32 | ▼ 38.5% |
| June | 31 | 34 | ▲ 9.7% |
| July | 32 | 35 | ▲ 9.4% |
| August | 27 | – | – |
| September | 29 | – | – |
| October | 30 | – | in progress |
| November | 19 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Jul) | 295 | 213 | ▼ 27.8% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 97.8% | 66.7% | ▼ 31.9% |
| February | 88.9% | 67.7% | ▼ 23.8% |
| March | 90.5% | 74.2% | ▼ 18.0% |
| April | 93.6% | 50.0% | ▼ 46.6% |
| May | 86.5% | 40.6% | ▼ 53.1% |
| June | 87.1% | 70.6% | ▼ 19.0% |
| July | 81.3% | 76.5% | ▼ 5.9% |
| August | 77.8% | – | – |
| September | 69.0% | – | – |
| October | 73.3% | – | in progress |
| November | 84.2% | – | – |
| December | 73.3% | – | – |
| Year-to-date average (Jan–Jul) | 89.4% | 63.8% | ▼ 28.7% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | 0 | 3 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 6 |
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 99.1% 669
- Cancelled 0.9% 6
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| DEN SAN Denver International Airport – San Diego International Airport | 1,371 | 27.2 min | 43.1% | 58 |
| MCO IND Orlando International Airport – Indianapolis International Airport | 1,336 | -2.0 min | 96.5% | 57 |
| PDX SMF Portland International Airport – Sacramento International Airport | 771 | 2.9 min | 90.0% | 50 |
| BWI BOS Baltimore/Washington International Thurgood Marshall Airport – Boston Logan International Airport | 594 | 6.1 min | 78.6% | 42 |
| BUR OAK Hollywood Burbank/Bob Hope Airport – Oakland San Francisco Bay Airport | 523 | 4.5 min | 80.0% | 35 |
| LAS BUR Harry Reid International Airport – Hollywood Burbank/Bob Hope Airport | 359 | 8.3 min | 81.8% | 34 |
| DAL MCI Dallas Love Field – Kansas City International Airport | 743 | 13.3 min | 74.2% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 13 | 13 | 84.6% | 0 |
| December 2024 | 24 | 24 | 66.7% | 0 |
| January 2025 | 46 | 46 | 97.8% | 0 |
| February 2025 | 45 | 45 | 88.9% | 0 |
| March 2025 | 42 | 42 | 90.5% | 0 |
| April 2025 | 47 | 47 | 93.6% | 0 |
| May 2025 | 52 | 52 | 86.5% | 0 |
| June 2025 | 31 | 31 | 87.1% | 0 |
| July 2025 | 32 | 32 | 81.3% | 0 |
| August 2025 | 27 | 27 | 77.8% | 0 |
| September 2025 | 29 | 29 | 69.0% | 0 |
| October 2025 | 30 | 30 | 73.3% | 0 |
| November 2025 | 19 | 19 | 84.2% | 0 |
| December 2025 | 15 | 15 | 73.3% | 0 |
| January 2026 | 17 | 15 | 66.7% | 2 |
| February 2026 | 34 | 31 | 67.7% | 3 |
| March 2026 | 31 | 31 | 74.2% | 0 |
| April 2026 | 30 | 30 | 50.0% | 0 |
| May 2026 | 32 | 32 | 40.6% | 0 |
| June 2026 | 34 | 34 | 70.6% | 0 |
| July 2026 | 35 | 34 | 76.5% | 1 |