WN3740
WN3740 (Southwest Airlines) is a multi-stop service on 19 routes, busiest Denver to New York. Of 328 departures recorded from October 2024 to July 2026, 48.6% left on time, according to the US BTS.
- On-time departures48.6%of 328 flights
- Average delay29.2 min
- July 202630▲ 500.0%vs July 2025
- Cancelled1.5%
- 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 periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 4 | ▲ 300.0% |
| February | – | 3 | – |
| March | 32 | 27 | ▼ 15.6% |
| April | 32 | 9 | ▼ 71.9% |
| May | 31 | 4 | ▼ 87.1% |
| June | 8 | 27 | ▲ 237.5% |
| July | 5 | 30 | ▲ 500.0% |
| August | 1 | – | – |
| September | – | – | – |
| October | 9 | – | in progress |
| November | 51 | – | – |
| December | 28 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 0.0% | 50.0% | – |
| February | – | 100.0% | – |
| March | 58.1% | 34.6% | ▼ 40.4% |
| April | 56.3% | 33.3% | ▼ 40.7% |
| May | 45.2% | 0.0% | ▼ 100.0% |
| June | 50.0% | 22.2% | ▼ 55.6% |
| July | 60.0% | 33.3% | ▼ 44.5% |
| August | 0.0% | – | – |
| September | – | – | – |
| October | 55.6% | – | in progress |
| November | 64.6% | – | – |
| December | 50.0% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | 1 | 1 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| 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% 323
- Cancelled 1.5% 5
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN LGA Denver International Airport – LaGuardia Airport | 2,600 | 28.8 min | 51.7% | 58 |
| SLC DEN Salt Lake City International Airport – Denver International Airport | 628 | 42.4 min | 28.1% | 57 |
| MSP DEN Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Denver International Airport | 1,092 | 23.5 min | 60.0% | 46 |
| LGA BNA LaGuardia Airport – Nashville International Airport | 1,228 | 51.3 min | 31.3% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 84.2% | 0 |
| November 2024 | 5 | 5 | 20.0% | 0 |
| December 2024 | 2 | 2 | 0.0% | 0 |
| January 2025 | 1 | 1 | 0.0% | 0 |
| March 2025 | 32 | 31 | 58.1% | 1 |
| April 2025 | 32 | 32 | 56.3% | 0 |
| May 2025 | 31 | 31 | 45.2% | 0 |
| June 2025 | 8 | 8 | 50.0% | 0 |
| July 2025 | 5 | 5 | 60.0% | 0 |
| August 2025 | 1 | 1 | 0.0% | 0 |
| October 2025 | 9 | 9 | 55.6% | 0 |
| November 2025 | 51 | 48 | 64.6% | 3 |
| December 2025 | 28 | 28 | 50.0% | 0 |
| January 2026 | 4 | 4 | 50.0% | 0 |
| February 2026 | 3 | 3 | 100.0% | 0 |
| March 2026 | 27 | 26 | 34.6% | 1 |
| April 2026 | 9 | 9 | 33.3% | 0 |
| May 2026 | 4 | 4 | 0.0% | 0 |
| June 2026 | 27 | 27 | 22.2% | 0 |
| July 2026 | 30 | 30 | 33.3% | 0 |