WN3439
WN3439 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Sacramento to Las Vegas. Of 500 departures recorded from October 2024 to July 2026, 75.6% left on time, according to the US BTS.
- On-time departures75.6%of 500 flights
- Average delay14.8 min
- July 202618▲ 260.0%vs July 2025
- Cancelled0.2%
- Legs flown under this number26
Recorded departures by month
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 | 32 | 5 | ▼ 84.4% |
| February | 20 | 3 | ▼ 85.0% |
| March | 15 | 27 | ▲ 80.0% |
| April | 28 | 27 | ▼ 3.6% |
| May | 36 | 26 | ▼ 27.8% |
| June | 8 | 19 | ▲ 137.5% |
| July | 5 | 18 | ▲ 260.0% |
| August | 24 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 144 | 125 | ▼ 13.2% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 68.8% | 100.0% | ▲ 45.5% |
| February | 85.0% | 66.7% | ▼ 21.6% |
| March | 80.0% | 74.1% | ▼ 7.4% |
| April | 85.7% | 63.0% | ▼ 26.5% |
| May | 88.9% | 65.4% | ▼ 26.4% |
| June | 87.5% | 73.7% | ▼ 15.8% |
| July | 80.0% | 50.0% | ▼ 37.5% |
| August | 91.7% | – | – |
| September | 100.0% | – | – |
| October | 67.7% | – | in progress |
| November | 72.4% | – | – |
| December | 53.3% | – | – |
| Year-to-date average (Jan–Jul) | 82.3% | 70.4% | ▼ 14.4% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 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 99.8% 499
- Cancelled 0.2% 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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SMF LAS Sacramento International Airport – Harry Reid International Airport | 639 | 13.4 min | 71.8% | 103 |
| LGA MCI LaGuardia Airport – Kansas City International Airport | 1,778 | 24.6 min | 66.1% | 63 |
| TUL LAS Tulsa International Airport – Harry Reid International Airport | 1,727 | 0.6 min | 91.2% | 57 |
| MKE DCA General Mitchell International Airport – Ronald Reagan Washington National Airport | 1,019 | 13.0 min | 64.0% | 50 |
| LBB DAL Lubbock Preston Smith International Airport – Dallas Love Field | 472 | -2.5 min | 96.0% | 50 |
| PIT MCO Pittsburgh International Airport – Orlando International Airport | 1,345 | 40.2 min | 58.8% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 80.8% | 0 |
| November 2024 | 32 | 32 | 71.9% | 0 |
| December 2024 | 32 | 32 | 78.1% | 0 |
| January 2025 | 32 | 32 | 68.8% | 0 |
| February 2025 | 20 | 20 | 85.0% | 0 |
| March 2025 | 15 | 15 | 80.0% | 0 |
| April 2025 | 28 | 28 | 85.7% | 0 |
| May 2025 | 36 | 36 | 88.9% | 0 |
| June 2025 | 8 | 8 | 87.5% | 0 |
| July 2025 | 5 | 5 | 80.0% | 0 |
| August 2025 | 24 | 24 | 91.7% | 0 |
| September 2025 | 26 | 26 | 100.0% | 0 |
| October 2025 | 31 | 31 | 67.7% | 0 |
| November 2025 | 29 | 29 | 72.4% | 0 |
| December 2025 | 31 | 30 | 53.3% | 1 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| February 2026 | 3 | 3 | 66.7% | 0 |
| March 2026 | 27 | 27 | 74.1% | 0 |
| April 2026 | 27 | 27 | 63.0% | 0 |
| May 2026 | 26 | 26 | 65.4% | 0 |
| June 2026 | 19 | 19 | 73.7% | 0 |
| July 2026 | 18 | 18 | 50.0% | 0 |