WN879
WN879 (Southwest Airlines) is a multi-stop service on 39 routes, busiest Las Vegas to Reno. Of 723 departures recorded from October 2024 to July 2026, 83.9% left on time, according to the US BTS.
- On-time departures83.9%of 723 flights
- Average delay7.2 min
- July 202630▲ 15.4%vs July 2025
- Cancelled1.0%
- Legs flown under this number39
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 | 31 | 33 | ▲ 6.5% |
| February | 28 | 38 | ▲ 35.7% |
| March | 49 | 32 | ▼ 34.7% |
| April | 44 | 27 | ▼ 38.6% |
| May | 45 | 28 | ▼ 37.8% |
| June | 27 | 30 | ▲ 11.1% |
| July | 26 | 30 | ▲ 15.4% |
| August | 19 | – | – |
| September | 17 | – | – |
| October | 48 | – | in progress |
| November | 54 | – | – |
| December | 39 | – | – |
| Year to date (Jan–Jul) | 250 | 218 | ▼ 12.8% |
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 | 90.3% | 93.6% | ▲ 3.6% |
| February | 80.8% | 94.4% | ▲ 16.9% |
| March | 93.9% | 93.8% | ▼ 0.1% |
| April | 88.6% | 81.5% | ▼ 8.1% |
| May | 97.8% | 92.9% | ▼ 5.0% |
| June | 85.2% | 70.0% | ▼ 17.8% |
| July | 92.3% | 55.2% | ▼ 40.2% |
| August | 79.0% | – | – |
| September | 94.1% | – | – |
| October | 68.8% | – | in progress |
| November | 75.9% | – | – |
| December | 69.2% | – | – |
| Year-to-date average (Jan–Jul) | 89.8% | 83.0% | ▼ 7.6% |
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 | 0 | 2 | – |
| February | 2 | 2 | 0.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 5 | ▲ 150.0% |
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 99.0% 716
- Cancelled 1.0% 7
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAS RNO Harry Reid International Airport – Reno Tahoe International Airport | 556 | 4.8 min | 84.4% | 79 |
| DCA MCI Ronald Reagan Washington National Airport – Kansas City International Airport | 1,524 | -2.3 min | 98.3% | 58 |
| BWI BNA Baltimore/Washington International Thurgood Marshall Airport – Nashville International Airport | 944 | 21.1 min | 60.7% | 57 |
| LGA MDW LaGuardia Airport – Chicago Midway International Airport | 1,164 | 6.6 min | 95.9% | 53 |
| BUR MDW Hollywood Burbank/Bob Hope Airport – Chicago Midway International Airport | 2,794 | 6.7 min | 88.0% | 50 |
| MAF DAL Midland International Air and Space Port – Dallas Love Field | 513 | 1.2 min | 90.5% | 42 |
| BDL TPA Bradley International Airport – Tampa International Airport | 1,790 | 17.7 min | 51.2% | 41 |
| SAN SMF San Diego International Airport – Sacramento International Airport | 773 | 9.8 min | 70.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 71.4% | 0 |
| November 2024 | 29 | 29 | 82.8% | 0 |
| December 2024 | 35 | 35 | 91.4% | 0 |
| January 2025 | 31 | 31 | 90.3% | 0 |
| February 2025 | 28 | 26 | 80.8% | 2 |
| March 2025 | 49 | 49 | 93.9% | 0 |
| April 2025 | 44 | 44 | 88.6% | 0 |
| May 2025 | 45 | 45 | 97.8% | 0 |
| June 2025 | 27 | 27 | 85.2% | 0 |
| July 2025 | 26 | 26 | 92.3% | 0 |
| August 2025 | 19 | 19 | 79.0% | 0 |
| September 2025 | 17 | 17 | 94.1% | 0 |
| October 2025 | 48 | 48 | 68.8% | 0 |
| November 2025 | 54 | 54 | 75.9% | 0 |
| December 2025 | 39 | 39 | 69.2% | 0 |
| January 2026 | 33 | 31 | 93.6% | 2 |
| February 2026 | 38 | 36 | 94.4% | 2 |
| March 2026 | 32 | 32 | 93.8% | 0 |
| April 2026 | 27 | 27 | 81.5% | 0 |
| May 2026 | 28 | 28 | 92.9% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 30 | 29 | 55.2% | 1 |