WN3946
WN3946 (Southwest Airlines) is a multi-stop service on 23 routes, busiest San Diego to Denver. Of 356 departures recorded from October 2024 to July 2026, 62.0% left on time, according to the US BTS.
- On-time departures62.0%of 356 flights
- Average delay23.6 min
- July 202616▼ 62.8%vs July 2025
- Cancelled1.7%
- Legs flown under this number23
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 | 2 | 29 | ▲ 1,350.0% |
| February | 2 | 28 | ▲ 1,300.0% |
| March | 17 | 24 | ▲ 41.2% |
| April | 7 | 21 | ▲ 200.0% |
| May | 6 | 22 | ▲ 266.7% |
| June | 38 | 16 | ▼ 57.9% |
| July | 43 | 16 | ▼ 62.8% |
| August | 6 | – | – |
| September | – | – | – |
| October | 34 | – | in progress |
| November | 6 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 115 | 156 | ▲ 35.7% |
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 | 100.0% | 82.8% | ▼ 17.2% |
| February | 100.0% | 53.6% | ▼ 46.4% |
| March | 70.6% | 47.8% | ▼ 32.2% |
| April | 57.1% | 50.0% | ▼ 12.5% |
| May | 83.3% | 45.5% | ▼ 45.5% |
| June | 36.8% | 62.5% | ▲ 69.7% |
| July | 48.8% | 42.9% | ▼ 12.1% |
| August | 66.7% | – | – |
| September | – | – | – |
| October | 100.0% | – | in progress |
| November | 83.3% | – | – |
| December | 63.6% | – | – |
| Year-to-date average (Jan–Jul) | 71.0% | 55.0% | ▼ 22.5% |
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 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 2 | 0.0% |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 4 | ▲ 100.0% |
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 98.3% 350
- Cancelled 1.7% 6
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAN DEN San Diego International Airport – Denver International Airport | 1,371 | 17.3 min | 67.2% | 58 |
| PVD MDW Rhode Island T. F. Green International Airport – Chicago Midway International Airport | 1,352 | 40.6 min | 56.8% | 45 |
| MDW TPA Chicago Midway International Airport – Tampa International Airport | 1,607 | 52.4 min | 31.7% | 42 |
| MDW HOU Chicago Midway International Airport – William P. Hobby Airport | 1,510 | 21.4 min | 50.0% | 39 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 76.5% | 0 |
| November 2024 | 3 | 3 | 66.7% | 0 |
| December 2024 | 8 | 8 | 87.5% | 0 |
| January 2025 | 2 | 2 | 100.0% | 0 |
| February 2025 | 2 | 2 | 100.0% | 0 |
| March 2025 | 17 | 17 | 70.6% | 0 |
| April 2025 | 7 | 7 | 57.1% | 0 |
| May 2025 | 6 | 6 | 83.3% | 0 |
| June 2025 | 38 | 38 | 36.8% | 0 |
| July 2025 | 43 | 41 | 48.8% | 2 |
| August 2025 | 6 | 6 | 66.7% | 0 |
| October 2025 | 34 | 34 | 100.0% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 11 | 11 | 63.6% | 0 |
| January 2026 | 29 | 29 | 82.8% | 0 |
| February 2026 | 28 | 28 | 53.6% | 0 |
| March 2026 | 24 | 23 | 47.8% | 1 |
| April 2026 | 21 | 20 | 50.0% | 1 |
| May 2026 | 22 | 22 | 45.5% | 0 |
| June 2026 | 16 | 16 | 62.5% | 0 |
| July 2026 | 16 | 14 | 42.9% | 2 |