WN499
WN499 (Southwest Airlines) is a multi-stop service on 35 routes, busiest San Jose to Las Vegas. Of 747 departures recorded from October 2024 to July 2026, 81.1% left on time, according to the US BTS.
- On-time departures81.1%of 747 flights
- Average delay10.1 min
- July 202631▼ 24.4%vs July 2025
- Cancelled0.7%
- Legs flown under this number35
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 | 44 | 34 | ▼ 22.7% |
| February | 43 | 28 | ▼ 34.9% |
| March | 46 | 27 | ▼ 41.3% |
| April | 28 | 18 | ▼ 35.7% |
| May | 26 | 17 | ▼ 34.6% |
| June | 35 | 28 | ▼ 20.0% |
| July | 41 | 31 | ▼ 24.4% |
| August | 49 | – | – |
| September | 51 | – | – |
| October | 52 | – | in progress |
| November | 43 | – | – |
| December | 49 | – | – |
| Year to date (Jan–Jul) | 263 | 183 | ▼ 30.4% |
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 | 86.4% | 88.2% | ▲ 2.2% |
| February | 90.7% | 96.4% | ▲ 6.3% |
| March | 79.6% | 69.2% | ▼ 13.0% |
| April | 67.9% | 72.2% | ▲ 6.4% |
| May | 88.5% | 58.8% | ▼ 33.5% |
| June | 93.9% | 82.1% | ▼ 12.6% |
| July | 97.6% | 83.9% | ▼ 14.0% |
| August | 57.1% | – | – |
| September | 60.8% | – | – |
| October | 71.2% | – | in progress |
| November | 100.0% | – | – |
| December | 89.8% | – | – |
| Year-to-date average (Jan–Jul) | 86.3% | 78.7% | ▼ 8.8% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 2 | 1 | ▼ 50.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 99.3% 742
- Cancelled 0.7% 5
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 |
|---|---|---|---|---|
| SJC LAS Mineta San Jose International Airport – Harry Reid International Airport | 620 | -0.0 min | 93.8% | 64 |
| MDW PHX Chicago Midway International Airport – Phoenix Sky Harbor International Airport | 2,319 | -1.2 min | 98.3% | 61 |
| MCO MKE Orlando International Airport – General Mitchell International Airport | 1,719 | 1.6 min | 93.1% | 58 |
| BNA DEN Nashville International Airport – Denver International Airport | 1,628 | 8.2 min | 84.0% | 50 |
| AUS BUR Austin Bergstrom International Airport – Hollywood Burbank/Bob Hope Airport | 1,994 | 21.1 min | 60.0% | 50 |
| DEN GEG Denver International Airport – Spokane International Airport | 1,343 | 2.6 min | 94.7% | 38 |
| GEG SMF Spokane International Airport – Sacramento International Airport | 1,045 | 1.5 min | 91.9% | 37 |
| DAL ATL Dallas Love Field – Hartsfield Jackson Atlanta International Airport | 1,158 | 15.9 min | 68.8% | 33 |
| TPA BNA Tampa International Airport – Nashville International Airport | 987 | 20.2 min | 64.5% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 13 | 13 | 92.3% | 0 |
| December 2024 | 24 | 24 | 66.7% | 0 |
| January 2025 | 44 | 44 | 86.4% | 0 |
| February 2025 | 43 | 43 | 90.7% | 0 |
| March 2025 | 46 | 44 | 79.6% | 2 |
| April 2025 | 28 | 28 | 67.9% | 0 |
| May 2025 | 26 | 26 | 88.5% | 0 |
| June 2025 | 35 | 33 | 93.9% | 2 |
| July 2025 | 41 | 41 | 97.6% | 0 |
| August 2025 | 49 | 49 | 57.1% | 0 |
| September 2025 | 51 | 51 | 60.8% | 0 |
| October 2025 | 52 | 52 | 71.2% | 0 |
| November 2025 | 43 | 43 | 100.0% | 0 |
| December 2025 | 49 | 49 | 89.8% | 0 |
| January 2026 | 34 | 34 | 88.2% | 0 |
| February 2026 | 28 | 28 | 96.4% | 0 |
| March 2026 | 27 | 26 | 69.2% | 1 |
| April 2026 | 18 | 18 | 72.2% | 0 |
| May 2026 | 17 | 17 | 58.8% | 0 |
| June 2026 | 28 | 28 | 82.1% | 0 |
| July 2026 | 31 | 31 | 83.9% | 0 |