WN4325
WN4325 (Southwest Airlines) is a multi-stop service on 31 routes, busiest Sacramento to Denver. Of 478 departures recorded from October 2024 to July 2026, 79.2% left on time, according to the US BTS.
- On-time departures79.2%of 478 flights
- Average delay9.7 min
- July 202622▲ 4.8%vs July 2025
- Cancelled0.4%
- Legs flown under this number31
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 | 8 | 5 | ▼ 37.5% |
| February | 2 | 17 | ▲ 750.0% |
| March | 26 | 25 | ▼ 3.8% |
| April | 42 | 5 | ▼ 88.1% |
| May | 50 | 1 | ▼ 98.0% |
| June | 25 | 20 | ▼ 20.0% |
| July | 21 | 22 | ▲ 4.8% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 34 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 174 | 95 | ▼ 45.4% |
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 | 50.0% | 40.0% | ▼ 20.0% |
| February | 100.0% | 100.0% | 0.0% |
| March | 65.4% | 92.0% | ▲ 40.7% |
| April | 88.1% | 100.0% | ▲ 13.5% |
| May | 94.0% | 100.0% | ▲ 6.4% |
| June | 64.0% | 60.0% | ▼ 6.3% |
| July | 65.0% | 86.4% | ▲ 32.9% |
| August | 90.3% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 63.6% | – | – |
| December | 40.0% | – | – |
| Year-to-date average (Jan–Jul) | 75.2% | 82.6% | ▲ 9.9% |
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 | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
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 99.6% 476
- Cancelled 0.4% 2
Share of all recorded flights in the period, all legs. · Oct 13, 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 DEN Sacramento International Airport – Denver International Airport | 1,460 | 3.0 min | 94.8% | 58 |
| PHX BUR Phoenix Sky Harbor International Airport – Hollywood Burbank/Bob Hope Airport | 593 | 0.3 min | 91.2% | 57 |
| MDW BWI Chicago Midway International Airport – Baltimore/Washington International Thurgood Marshall Airport | 981 | 7.4 min | 75.0% | 44 |
| COS DEN City of Colorado Springs Municipal Airport – Denver International Airport | 117 | 13.7 min | 73.8% | 42 |
| PIT MDW Pittsburgh International Airport – Chicago Midway International Airport | 646 | 28.1 min | 60.0% | 36 |
| DEN SNA Denver International Airport – John Wayne Orange County International Airport | 1,360 | 13.2 min | 63.6% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 15 | 15 | 80.0% | 0 |
| November 2024 | 38 | 38 | 89.5% | 0 |
| December 2024 | 30 | 30 | 80.0% | 0 |
| January 2025 | 8 | 8 | 50.0% | 0 |
| February 2025 | 2 | 2 | 100.0% | 0 |
| March 2025 | 26 | 26 | 65.4% | 0 |
| April 2025 | 42 | 42 | 88.1% | 0 |
| May 2025 | 50 | 50 | 94.0% | 0 |
| June 2025 | 25 | 25 | 64.0% | 0 |
| July 2025 | 21 | 20 | 65.0% | 1 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 34 | 33 | 63.6% | 1 |
| December 2025 | 30 | 30 | 40.0% | 0 |
| January 2026 | 5 | 5 | 40.0% | 0 |
| February 2026 | 17 | 17 | 100.0% | 0 |
| March 2026 | 25 | 25 | 92.0% | 0 |
| April 2026 | 5 | 5 | 100.0% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 20 | 20 | 60.0% | 0 |
| July 2026 | 22 | 22 | 86.4% | 0 |