WN3891
WN3891 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Las Vegas to Austin. Of 334 departures recorded from October 2024 to July 2026, 68.2% left on time, according to the US BTS.
- On-time departures68.2%of 334 flights
- Average delay18.3 min
- July 202627▲ 1,250.0%vs July 2025
- Cancelled1.2%
- Legs flown under this number18
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 26 | 29 | ▲ 11.5% |
| February | 25 | 25 | 0.0% |
| March | 21 | 31 | ▲ 47.6% |
| April | 5 | 6 | ▲ 20.0% |
| May | – | 2 | – |
| June | – | 23 | – |
| July | 2 | 27 | ▲ 1,250.0% |
| August | 3 | – | – |
| September | 4 | – | – |
| October | 26 | – | in progress |
| November | 4 | – | – |
| December | 11 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 65.4% | 96.2% | ▲ 47.1% |
| February | 72.0% | 68.0% | ▼ 5.6% |
| March | 66.7% | 43.3% | ▼ 35.0% |
| April | 80.0% | 33.3% | ▼ 58.3% |
| May | – | 0.0% | – |
| June | – | 73.9% | – |
| July | 100.0% | 85.2% | ▼ 14.8% |
| August | 66.7% | – | – |
| September | 50.0% | – | – |
| October | 57.7% | – | in progress |
| November | 75.0% | – | – |
| December | 54.6% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 3 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | – | 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 98.8% 330
- Cancelled 1.2% 4
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAS AUS Harry Reid International Airport – Austin Bergstrom International Airport | 1,752 | 20.2 min | 72.5% | 91 |
| TPA RDU Tampa International Airport – Raleigh-Durham International Airport | 947 | 8.6 min | 76.9% | 55 |
| STL BOS St. Louis Lambert International Airport – Boston Logan International Airport | 1,680 | 13.4 min | 80.0% | 50 |
| ORD MCO Chicago O'Hare International Airport – Orlando International Airport | 1,620 | 45.9 min | 43.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 63.2% | 0 |
| November 2024 | 25 | 25 | 76.0% | 0 |
| December 2024 | 20 | 20 | 70.0% | 0 |
| January 2025 | 26 | 26 | 65.4% | 0 |
| February 2025 | 25 | 25 | 72.0% | 0 |
| March 2025 | 21 | 21 | 66.7% | 0 |
| April 2025 | 5 | 5 | 80.0% | 0 |
| July 2025 | 2 | 2 | 100.0% | 0 |
| August 2025 | 3 | 3 | 66.7% | 0 |
| September 2025 | 4 | 4 | 50.0% | 0 |
| October 2025 | 26 | 26 | 57.7% | 0 |
| November 2025 | 4 | 4 | 75.0% | 0 |
| December 2025 | 11 | 11 | 54.6% | 0 |
| January 2026 | 29 | 26 | 96.2% | 3 |
| February 2026 | 25 | 25 | 68.0% | 0 |
| March 2026 | 31 | 30 | 43.3% | 1 |
| April 2026 | 6 | 6 | 33.3% | 0 |
| May 2026 | 2 | 2 | 0.0% | 0 |
| June 2026 | 23 | 23 | 73.9% | 0 |
| July 2026 | 27 | 27 | 85.2% | 0 |