WN4184
WN4184 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Denver to Detroit. Of 431 departures recorded from October 2024 to July 2026, 79.7% left on time, according to the US BTS.
- On-time departures79.7%of 431 flights
- Average delay10.0 min
- July 202617
- Cancelled0.5%
- Legs flown under this number18
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods14 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 29 | 5 | ▼ 82.8% |
| February | 28 | 30 | ▲ 7.1% |
| March | 23 | 42 | ▲ 82.6% |
| April | 5 | 46 | ▲ 820.0% |
| May | – | 48 | – |
| June | – | 20 | – |
| July | – | 17 | – |
| August | – | – | – |
| September | – | – | – |
| October | 4 | – | in progress |
| November | 37 | – | – |
| December | 44 | – | – |
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 periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 62.1% | 100.0% | ▲ 61.1% |
| February | 71.4% | 71.4% | 0.0% |
| March | 78.3% | 78.6% | ▲ 0.4% |
| April | 80.0% | 95.7% | ▲ 19.6% |
| May | – | 97.9% | – |
| June | – | 65.0% | – |
| July | – | 23.5% | – |
| August | – | – | – |
| September | – | – | – |
| October | 25.0% | – | in progress |
| November | 94.6% | – | – |
| December | 93.2% | – | – |
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 periods14 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| 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 99.5% 429
- Cancelled 0.5% 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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN DTW Denver International Airport – Detroit Metropolitan Wayne County Airport | 1,802 | 19.3 min | 70.9% | 110 |
| RNO DEN Reno Tahoe International Airport – Denver International Airport | 1,291 | 1.0 min | 93.8% | 64 |
| SMF SBA Sacramento International Airport – Santa Barbara Municipal Airport | 500 | -3.5 min | 100.0% | 57 |
| SFO PHX San Francisco International Airport – Phoenix Sky Harbor International Airport | 1,047 | 6.8 min | 87.9% | 33 |
| SBA LAS Santa Barbara Municipal Airport – Harry Reid International Airport | 464 | -2.2 min | 96.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 3 | 66.7% | 0 |
| November 2024 | 25 | 25 | 76.0% | 0 |
| December 2024 | 25 | 25 | 72.0% | 0 |
| January 2025 | 29 | 29 | 62.1% | 0 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 23 | 23 | 78.3% | 0 |
| April 2025 | 5 | 5 | 80.0% | 0 |
| October 2025 | 4 | 4 | 25.0% | 0 |
| November 2025 | 37 | 37 | 94.6% | 0 |
| December 2025 | 44 | 44 | 93.2% | 0 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| February 2026 | 30 | 28 | 71.4% | 2 |
| March 2026 | 42 | 42 | 78.6% | 0 |
| April 2026 | 46 | 46 | 95.7% | 0 |
| May 2026 | 48 | 48 | 97.9% | 0 |
| June 2026 | 20 | 20 | 65.0% | 0 |
| July 2026 | 17 | 17 | 23.5% | 0 |