WN4242
WN4242 (Southwest Airlines) is a multi-stop service on 16 routes, busiest Denver to Cleveland. Of 416 departures recorded from October 2024 to July 2026, 61.0% left on time, according to the US BTS.
- On-time departures61.0%of 416 flights
- Average delay22.9 min
- July 202618▼ 55.0%vs July 2025
- Cancelled1.4%
- Legs flown under this number16
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 | 25 | 4 | ▼ 84.0% |
| February | 16 | 1 | ▼ 93.8% |
| March | 3 | 27 | ▲ 800.0% |
| April | 23 | 17 | ▼ 26.1% |
| May | 31 | 13 | ▼ 58.1% |
| June | 36 | 18 | ▼ 50.0% |
| July | 40 | 18 | ▼ 55.0% |
| August | 39 | – | – |
| September | 39 | – | – |
| October | 6 | – | in progress |
| November | 18 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Jul) | 174 | 98 | ▼ 43.7% |
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 | 75.0% | 100.0% | ▲ 33.3% |
| February | 62.5% | 100.0% | ▲ 60.0% |
| March | 66.7% | 46.2% | ▼ 30.8% |
| April | 91.3% | 87.5% | ▼ 4.2% |
| May | 60.0% | 25.0% | ▼ 58.3% |
| June | 38.9% | 22.2% | ▼ 42.9% |
| July | 50.0% | 33.3% | ▼ 33.3% |
| August | 66.7% | – | – |
| September | 79.5% | – | – |
| October | 66.7% | – | in progress |
| November | 58.8% | – | – |
| December | 66.7% | – | – |
| Year-to-date average (Jan–Jul) | 63.5% | 59.2% | ▼ 6.8% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 1 | – |
| May | 1 | 1 | 0.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 3 | ▲ 50.0% |
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 98.6% 410
- Cancelled 1.4% 6
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 |
|---|---|---|---|---|
| DEN CLE Denver International Airport – Cleveland Hopkins International Airport | 1,928 | 14.3 min | 75.0% | 65 |
| SFO PHX San Francisco International Airport – Phoenix Sky Harbor International Airport | 1,047 | 25.4 min | 41.7% | 60 |
| SAV BNA Savannah Hilton Head International Airport – Nashville International Airport | 672 | 10.8 min | 74.1% | 58 |
| MDW STL Chicago Midway International Airport – St. Louis Lambert International Airport | 404 | 13.9 min | 75.4% | 58 |
| SAN PHX San Diego International Airport – Phoenix Sky Harbor International Airport | 489 | 22.0 min | 65.7% | 36 |
| PIT RSW Pittsburgh International Airport – Southwest Florida International Airport | 1,558 | 30.2 min | 53.1% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 3 | 100.0% | 0 |
| November 2024 | 8 | 8 | 75.0% | 0 |
| December 2024 | 16 | 16 | 81.3% | 0 |
| January 2025 | 25 | 24 | 75.0% | 1 |
| February 2025 | 16 | 16 | 62.5% | 0 |
| March 2025 | 3 | 3 | 66.7% | 0 |
| April 2025 | 23 | 23 | 91.3% | 0 |
| May 2025 | 31 | 30 | 60.0% | 1 |
| June 2025 | 36 | 36 | 38.9% | 0 |
| July 2025 | 40 | 40 | 50.0% | 0 |
| August 2025 | 39 | 39 | 66.7% | 0 |
| September 2025 | 39 | 39 | 79.5% | 0 |
| October 2025 | 6 | 6 | 66.7% | 0 |
| November 2025 | 18 | 17 | 58.8% | 1 |
| December 2025 | 15 | 15 | 66.7% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| February 2026 | 1 | 1 | 100.0% | 0 |
| March 2026 | 27 | 26 | 46.2% | 1 |
| April 2026 | 17 | 16 | 87.5% | 1 |
| May 2026 | 13 | 12 | 25.0% | 1 |
| June 2026 | 18 | 18 | 22.2% | 0 |
| July 2026 | 18 | 18 | 33.3% | 0 |