WN4911
WN4911 (Southwest Airlines) is a multi-stop service on 11 routes, busiest Chicago to Las Vegas. Of 134 departures recorded from October 2024 to July 2026, 84.2% left on time, according to the US BTS.
- On-time departures84.2%of 134 flights
- Average delay11.2 min
- July 202618
- Cancelled0.8%
- Legs flown under this number11
Recorded departures by month
Short series — WN4911 has only 10 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods7 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 11 | – | – |
| February | 21 | 1 | ▼ 95.2% |
| March | 4 | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 16 | – |
| July | – | 18 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 4 | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Short series — WN4911 has only 10 months so far. Enough to show the level now, not enough to read a trend.
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 periods7 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 90.9% | – | – |
| February | 81.0% | 0.0% | ▼ 100.0% |
| March | 100.0% | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 100.0% | – |
| July | – | 94.4% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 25.0% | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Short series — WN4911 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Short series — WN4911 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods7 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | – | – |
| February | 0 | 0 | – |
| March | 0 | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 1 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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 99.3% 133
- Cancelled 0.7% 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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW LAS Chicago Midway International Airport – Harry Reid International Airport | 2,442 | 13.3 min | 82.4% | 68 |
| SMF ONT Sacramento International Airport – Ontario International Airport | 627 | 3.1 min | 97.0% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 15 | 15 | 93.3% | 0 |
| November 2024 | 25 | 25 | 76.0% | 0 |
| December 2024 | 19 | 19 | 79.0% | 0 |
| January 2025 | 11 | 11 | 90.9% | 0 |
| February 2025 | 21 | 21 | 81.0% | 0 |
| March 2025 | 4 | 4 | 100.0% | 0 |
| November 2025 | 4 | 4 | 25.0% | 0 |
| February 2026 | 1 | 1 | 0.0% | 0 |
| June 2026 | 16 | 15 | 100.0% | 1 |
| July 2026 | 18 | 18 | 94.4% | 0 |