WN4674
WN4674 (Southwest Airlines) is a multi-stop service on 13 routes, busiest San Francisco to Las Vegas. Of 270 departures recorded from October 2024 to July 2026, 75.6% left on time, according to the US BTS.
- On-time departures75.6%of 270 flights
- Average delay12.8 min
- July 202630▲ 0.0%vs July 2025
- Cancelled1.5%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 26 | 1 | ▼ 96.2% |
| February | 24 | – | – |
| March | 24 | – | – |
| April | 8 | – | – |
| May | 3 | – | – |
| June | 29 | 26 | ▼ 10.3% |
| July | 30 | 30 | 0.0% |
| August | 5 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 3 | – | – |
| December | 2 | – | – |
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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 73.1% | 100.0% | ▲ 36.8% |
| February | 65.2% | – | – |
| March | 75.0% | – | – |
| April | 37.5% | – | – |
| May | 66.7% | – | – |
| June | 44.4% | 96.2% | ▲ 116.4% |
| July | 72.4% | 96.7% | ▲ 33.5% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 66.7% | – | – |
| December | 100.0% | – | – |
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 periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 1 | – | – |
| March | 0 | – | – |
| April | 0 | – | – |
| May | 0 | – | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | 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 98.5% 266
- Cancelled 1.5% 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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO LAS San Francisco International Airport – Harry Reid International Airport | 665 | 19.1 min | 72.1% | 62 |
| PWM BWI Portland International Jetport – Baltimore/Washington International Thurgood Marshall Airport | 727 | -0.3 min | 96.4% | 56 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 69.2% | 0 |
| November 2024 | 30 | 30 | 80.0% | 0 |
| December 2024 | 16 | 16 | 87.5% | 0 |
| January 2025 | 26 | 26 | 73.1% | 0 |
| February 2025 | 24 | 23 | 65.2% | 1 |
| March 2025 | 24 | 24 | 75.0% | 0 |
| April 2025 | 8 | 8 | 37.5% | 0 |
| May 2025 | 3 | 3 | 66.7% | 0 |
| June 2025 | 29 | 27 | 44.4% | 2 |
| July 2025 | 30 | 29 | 72.4% | 1 |
| August 2025 | 5 | 5 | 100.0% | 0 |
| November 2025 | 3 | 3 | 66.7% | 0 |
| December 2025 | 2 | 2 | 100.0% | 0 |
| January 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 26 | 26 | 96.2% | 0 |
| July 2026 | 30 | 30 | 96.7% | 0 |