WN3842
WN3842 (Southwest Airlines) is a multi-stop service on 19 routes, busiest Denver to Philadelphia. Of 372 departures recorded from October 2024 to July 2026, 73.8% left on time, according to the US BTS.
- On-time departures73.8%of 372 flights
- Average delay16.2 min
- July 202627▼ 28.9%vs July 2025
- Cancelled0.5%
- Legs flown under this number19
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 17 | 3 | ▼ 82.4% |
| February | 9 | 7 | ▼ 22.2% |
| March | 28 | 24 | ▼ 14.3% |
| April | 10 | 29 | ▲ 190.0% |
| May | 4 | 31 | ▲ 675.0% |
| June | 31 | 26 | ▼ 16.1% |
| July | 38 | 27 | ▼ 28.9% |
| August | 5 | – | – |
| September | – | – | – |
| October | 43 | – | in progress |
| November | 7 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 137 | 147 | ▲ 7.3% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 66.7% | ▼ 33.3% |
| February | 77.8% | 100.0% | ▲ 28.6% |
| March | 70.4% | 70.8% | ▲ 0.7% |
| April | 60.0% | 96.6% | ▲ 60.9% |
| May | 75.0% | 96.8% | ▲ 29.0% |
| June | 58.1% | 42.3% | ▼ 27.1% |
| July | 73.7% | 26.9% | ▼ 63.5% |
| August | 60.0% | – | – |
| September | – | – | – |
| October | 90.7% | – | in progress |
| November | 57.1% | – | – |
| December | 54.6% | – | – |
| Year-to-date average (Jan–Jul) | 73.6% | 71.4% | ▼ 2.9% |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 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 99.5% 370
- Cancelled 0.5% 2
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN PHL Denver International Airport – Philadelphia International Airport | 2,501 | 19.2 min | 75.4% | 61 |
| LAS PHX Harry Reid International Airport – Phoenix Sky Harbor International Airport | 411 | -4.0 min | 98.3% | 58 |
| DEN SBA Denver International Airport – Santa Barbara Municipal Airport | 1,471 | 46.6 min | 30.6% | 50 |
| OMA LAS Eppley Airfield – Harry Reid International Airport | 1,765 | 14.4 min | 68.8% | 33 |
| MDW MCO Chicago Midway International Airport – Orlando International Airport | 1,595 | 1.3 min | 93.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 2 | 2 | 100.0% | 0 |
| January 2025 | 17 | 17 | 100.0% | 0 |
| February 2025 | 9 | 9 | 77.8% | 0 |
| March 2025 | 28 | 27 | 70.4% | 1 |
| April 2025 | 10 | 10 | 60.0% | 0 |
| May 2025 | 4 | 4 | 75.0% | 0 |
| June 2025 | 31 | 31 | 58.1% | 0 |
| July 2025 | 38 | 38 | 73.7% | 0 |
| August 2025 | 5 | 5 | 60.0% | 0 |
| October 2025 | 43 | 43 | 90.7% | 0 |
| November 2025 | 7 | 7 | 57.1% | 0 |
| December 2025 | 11 | 11 | 54.6% | 0 |
| January 2026 | 3 | 3 | 66.7% | 0 |
| February 2026 | 7 | 7 | 100.0% | 0 |
| March 2026 | 24 | 24 | 70.8% | 0 |
| April 2026 | 29 | 29 | 96.6% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 26 | 26 | 42.3% | 0 |
| July 2026 | 27 | 26 | 26.9% | 1 |