WN931
WN931 (Southwest Airlines) is a multi-stop service on 44 routes, busiest Baltimore to Las Vegas. Of 816 departures recorded from October 2024 to July 2026, 77.4% left on time, according to the US BTS.
- On-time departures77.4%of 816 flights
- Average delay13.9 min
- July 202663▲ 85.3%vs July 2025
- Cancelled1.4%
- Legs flown under this number44
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 43 | 29 | ▼ 32.6% |
| February | 29 | 28 | ▼ 3.4% |
| March | 39 | 31 | ▼ 20.5% |
| April | 47 | 20 | ▼ 57.4% |
| May | 51 | 19 | ▼ 62.7% |
| June | 37 | 57 | ▲ 54.1% |
| July | 34 | 63 | ▲ 85.3% |
| August | 42 | – | – |
| September | 42 | – | – |
| October | 26 | – | in progress |
| November | 15 | – | – |
| December | 13 | – | – |
| Year to date (Jan–Jul) | 280 | 247 | ▼ 11.8% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 74.4% | 81.5% | ▲ 9.6% |
| February | 71.4% | 89.3% | ▲ 25.0% |
| March | 89.7% | 76.7% | ▼ 14.6% |
| April | 85.1% | 75.0% | ▼ 11.9% |
| May | 90.2% | 79.0% | ▼ 12.5% |
| June | 78.4% | 60.7% | ▼ 22.5% |
| July | 79.4% | 69.8% | ▼ 12.1% |
| August | 83.3% | – | – |
| September | 71.4% | – | – |
| October | 76.9% | – | in progress |
| November | 40.0% | – | – |
| December | 46.2% | – | – |
| Year-to-date average (Jan–Jul) | 81.2% | 76.0% | ▼ 6.5% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 2 | ▼ 50.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 4 | ▼ 20.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.7% 805
- Cancelled 1.3% 11
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BWI LAS Baltimore/Washington International Thurgood Marshall Airport – Harry Reid International Airport | 3,381 | 5.8 min | 83.9% | 58 |
| LAS SAN Harry Reid International Airport – San Diego International Airport | 417 | 3.2 min | 90.9% | 55 |
| SAN DEN San Diego International Airport – Denver International Airport | 1,371 | 16.1 min | 72.3% | 47 |
| DEN SLC Denver International Airport – Salt Lake City International Airport | 628 | 7.9 min | 83.7% | 43 |
| LAS OAK Harry Reid International Airport – Oakland San Francisco Bay Airport | 654 | 24.2 min | 70.0% | 40 |
| AUS PNS Austin Bergstrom International Airport – Pensacola International Airport | 1,005 | 23.7 min | 64.7% | 34 |
| MDW RDU Chicago Midway International Airport – Raleigh-Durham International Airport | 1,016 | 13.6 min | 81.3% | 33 |
| LGB LAS Long Beach International Airport – Harry Reid International Airport | 372 | 11.6 min | 84.4% | 32 |
| BHM TPA Birmingham-Shuttlesworth International Airport – Tampa International Airport | 740 | 38.7 min | 46.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 76 | 74 | 85.1% | 2 |
| December 2024 | 55 | 55 | 74.6% | 0 |
| January 2025 | 43 | 39 | 74.4% | 4 |
| February 2025 | 29 | 28 | 71.4% | 1 |
| March 2025 | 39 | 39 | 89.7% | 0 |
| April 2025 | 47 | 47 | 85.1% | 0 |
| May 2025 | 51 | 51 | 90.2% | 0 |
| June 2025 | 37 | 37 | 78.4% | 0 |
| July 2025 | 34 | 34 | 79.4% | 0 |
| August 2025 | 42 | 42 | 83.3% | 0 |
| September 2025 | 42 | 42 | 71.4% | 0 |
| October 2025 | 26 | 26 | 76.9% | 0 |
| November 2025 | 15 | 15 | 40.0% | 0 |
| December 2025 | 13 | 13 | 46.2% | 0 |
| January 2026 | 29 | 27 | 81.5% | 2 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 31 | 30 | 76.7% | 1 |
| April 2026 | 20 | 20 | 75.0% | 0 |
| May 2026 | 19 | 19 | 79.0% | 0 |
| June 2026 | 57 | 56 | 60.7% | 1 |
| July 2026 | 63 | 63 | 69.8% | 0 |