WN3941
WN3941 (Southwest Airlines) is a multi-stop service on 24 routes, busiest San Francisco to Denver. Of 456 departures recorded from October 2024 to July 2026, 75.2% left on time, according to the US BTS.
- On-time departures75.2%of 456 flights
- Average delay12.5 min
- July 20263▼ 93.8%vs July 2025
- Cancelled1.1%
- Legs flown under this number24
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 | 27 | 27 | 0.0% |
| February | 18 | 37 | ▲ 105.6% |
| March | 20 | 17 | ▼ 15.0% |
| April | 4 | 5 | ▲ 25.0% |
| May | – | 6 | – |
| June | 42 | 5 | ▼ 88.1% |
| July | 48 | 3 | ▼ 93.8% |
| August | 38 | – | – |
| September | 35 | – | – |
| October | 6 | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
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 | 74.1% | 92.0% | ▲ 24.2% |
| February | 61.1% | 97.1% | ▲ 58.8% |
| March | 60.0% | 82.4% | ▲ 37.2% |
| April | 100.0% | 60.0% | ▼ 40.0% |
| May | – | 50.0% | – |
| June | 57.1% | 100.0% | ▲ 75.0% |
| July | 56.3% | 100.0% | ▲ 77.8% |
| August | 68.4% | – | – |
| September | 91.4% | – | – |
| October | 66.7% | – | in progress |
| November | 96.4% | – | – |
| December | 74.2% | – | – |
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 | 2 | – |
| February | 0 | 3 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 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 98.9% 451
- Cancelled 1.1% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 25, 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 |
|---|---|---|---|---|
| SFO DEN San Francisco International Airport – Denver International Airport | 1,553 | 17.8 min | 68.3% | 82 |
| PHX OGG Phoenix Sky Harbor International Airport – Kahului International Airport | 4,573 | 4.4 min | 82.5% | 63 |
| BNA VPS Nashville International Airport – Destin-Fort Walton Beach Airport | 628 | 16.2 min | 62.3% | 61 |
| SAN DAL San Diego International Airport – Dallas Love Field | 1,899 | 0.4 min | 100.0% | 53 |
| SMF ONT Sacramento International Airport – Ontario International Airport | 627 | 7.7 min | 78.0% | 50 |
| VPS DAL Destin-Fort Walton Beach Airport – Dallas Love Field | 1,012 | 22.8 min | 51.4% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 13 | 13 | 69.2% | 0 |
| December 2024 | 26 | 26 | 73.1% | 0 |
| January 2025 | 27 | 27 | 74.1% | 0 |
| February 2025 | 18 | 18 | 61.1% | 0 |
| March 2025 | 20 | 20 | 60.0% | 0 |
| April 2025 | 4 | 4 | 100.0% | 0 |
| June 2025 | 42 | 42 | 57.1% | 0 |
| July 2025 | 48 | 48 | 56.3% | 0 |
| August 2025 | 38 | 38 | 68.4% | 0 |
| September 2025 | 35 | 35 | 91.4% | 0 |
| October 2025 | 6 | 6 | 66.7% | 0 |
| November 2025 | 28 | 28 | 96.4% | 0 |
| December 2025 | 31 | 31 | 74.2% | 0 |
| January 2026 | 27 | 25 | 92.0% | 2 |
| February 2026 | 37 | 34 | 97.1% | 3 |
| March 2026 | 17 | 17 | 82.4% | 0 |
| April 2026 | 5 | 5 | 60.0% | 0 |
| May 2026 | 6 | 6 | 50.0% | 0 |
| June 2026 | 5 | 5 | 100.0% | 0 |
| July 2026 | 3 | 3 | 100.0% | 0 |