WN4166
WN4166 (Southwest Airlines) is a multi-stop service on 16 routes, busiest Denver to Oklahoma City. Of 505 departures recorded from October 2024 to July 2026, 75.0% left on time, according to the US BTS.
- On-time departures75.0%of 505 flights
- Average delay11.0 min
- July 202623▼ 25.8%vs July 2025
- Cancelled0.4%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 36 | 36 | 0.0% |
| February | 24 | 54 | ▲ 125.0% |
| March | 30 | 34 | ▲ 13.3% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 22 | ▼ 26.7% |
| July | 31 | 23 | ▼ 25.8% |
| August | 4 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 212 | 230 | ▲ 8.5% |
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 77.8% | 75.0% | ▼ 3.6% |
| February | 70.8% | 70.4% | ▼ 0.6% |
| March | 86.7% | 67.7% | ▼ 21.9% |
| April | 86.7% | 86.7% | 0.0% |
| May | 69.0% | 90.3% | ▲ 31.0% |
| June | 83.3% | 59.1% | ▼ 29.1% |
| July | 67.7% | 65.2% | ▼ 3.7% |
| August | 75.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Jul) | 77.4% | 73.5% | ▼ 5.1% |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 2 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 2 | 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% 503
- Cancelled 0.4% 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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN OKC Denver International Airport – OKC Will Rogers World Airport | 796 | 8.0 min | 78.9% | 71 |
| PDX BWI Portland International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,786 | 10.3 min | 73.8% | 61 |
| SAT MCO San Antonio International Airport – Orlando International Airport | 1,672 | 1.8 min | 93.1% | 58 |
| LAS OAK Harry Reid International Airport – Oakland San Francisco Bay Airport | 654 | 14.7 min | 63.8% | 58 |
| BNA MKE Nashville International Airport – General Mitchell International Airport | 766 | 16.0 min | 76.8% | 58 |
| SAN OAK San Diego International Airport – Oakland San Francisco Bay Airport | 718 | 13.5 min | 59.5% | 42 |
| SJC LAX Mineta San Jose International Airport – Los Angeles International Airport | 496 | 5.4 min | 87.9% | 33 |
| PHX IAD Phoenix Sky Harbor International Airport – Washington Dulles International Airport | 3,141 | 16.5 min | 66.7% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 55.0% | 0 |
| November 2024 | 15 | 15 | 86.7% | 0 |
| December 2024 | 24 | 24 | 70.8% | 0 |
| January 2025 | 36 | 36 | 77.8% | 0 |
| February 2025 | 24 | 24 | 70.8% | 0 |
| March 2025 | 30 | 30 | 86.7% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 29 | 69.0% | 2 |
| June 2025 | 30 | 30 | 83.3% | 0 |
| July 2025 | 31 | 31 | 67.7% | 0 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| January 2026 | 36 | 36 | 75.0% | 0 |
| February 2026 | 54 | 54 | 70.4% | 0 |
| March 2026 | 34 | 34 | 67.7% | 0 |
| April 2026 | 30 | 30 | 86.7% | 0 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 22 | 22 | 59.1% | 0 |
| July 2026 | 23 | 23 | 65.2% | 0 |