WN1188
WN1188 (Southwest Airlines) is a multi-stop service on 40 routes, busiest Denver to Milwaukee. Of 712 departures recorded from October 2024 to July 2026, 67.3% left on time, according to the US BTS.
- On-time departures67.3%of 712 flights
- Average delay17.8 min
- July 202677▲ 266.7%vs July 2025
- Cancelled0.3%
- Legs flown under this number40
according to the US BTS · Oct 13, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 32 | 26 | ▼ 18.8% |
| February | 32 | 24 | ▼ 25.0% |
| March | 15 | 62 | ▲ 313.3% |
| April | 25 | 35 | ▲ 40.0% |
| May | 31 | 30 | ▼ 3.2% |
| June | 24 | 69 | ▲ 187.5% |
| July | 21 | 77 | ▲ 266.7% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 17 | – | in progress |
| November | 31 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 180 | 323 | ▲ 79.4% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 78.1% | 76.9% | ▼ 1.5% |
| February | 81.3% | 87.5% | ▲ 7.7% |
| March | 60.0% | 67.7% | ▲ 12.9% |
| April | 64.0% | 88.6% | ▲ 38.4% |
| May | 51.6% | 100.0% | ▲ 93.8% |
| June | 91.7% | 41.2% | ▼ 55.1% |
| July | 85.7% | 48.1% | ▼ 43.9% |
| August | 67.7% | – | – |
| September | 76.7% | – | – |
| October | 70.6% | – | in progress |
| November | 80.7% | – | – |
| December | 66.7% | – | – |
| Year-to-date average (Jan–Jul) | 73.2% | 72.9% | ▼ 0.5% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 1 |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.7% 710
- Cancelled 0.3% 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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN MKE Denver International Airport – General Mitchell International Airport | 1,438 | 15.9 min | 68.7% | 67 |
| PHX ORD Phoenix Sky Harbor International Airport – Chicago O'Hare International Airport | 2,313 | 25.0 min | 58.6% | 58 |
| BNA MSY Nashville International Airport – Louis Armstrong New Orleans International Airport | 759 | 9.1 min | 70.7% | 58 |
| PDX LAS Portland International Airport – Harry Reid International Airport | 1,227 | -0.7 min | 94.7% | 57 |
| STL MCO St. Louis Lambert International Airport – Orlando International Airport | 1,420 | 10.4 min | 88.9% | 45 |
| OKC DEN OKC Will Rogers World Airport – Denver International Airport | 796 | 45.1 min | 30.3% | 34 |
| MCO DCA Orlando International Airport – Ronald Reagan Washington National Airport | 1,224 | 29.2 min | 42.4% | 33 |
| LAX HOU Los Angeles International Airport – William P. Hobby Airport | 2,233 | 8.6 min | 81.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 88.2% | 0 |
| November 2024 | 17 | 17 | 70.6% | 0 |
| December 2024 | 35 | 35 | 25.7% | 0 |
| January 2025 | 32 | 32 | 78.1% | 0 |
| February 2025 | 32 | 32 | 81.3% | 0 |
| March 2025 | 15 | 15 | 60.0% | 0 |
| April 2025 | 25 | 25 | 64.0% | 0 |
| May 2025 | 31 | 31 | 51.6% | 0 |
| June 2025 | 24 | 24 | 91.7% | 0 |
| July 2025 | 21 | 21 | 85.7% | 0 |
| August 2025 | 31 | 31 | 67.7% | 0 |
| September 2025 | 30 | 30 | 76.7% | 0 |
| October 2025 | 17 | 17 | 70.6% | 0 |
| November 2025 | 31 | 31 | 80.7% | 0 |
| December 2025 | 31 | 30 | 66.7% | 1 |
| January 2026 | 26 | 26 | 76.9% | 0 |
| February 2026 | 24 | 24 | 87.5% | 0 |
| March 2026 | 62 | 62 | 67.7% | 0 |
| April 2026 | 35 | 35 | 88.6% | 0 |
| May 2026 | 30 | 30 | 100.0% | 0 |
| June 2026 | 69 | 68 | 41.2% | 1 |
| July 2026 | 77 | 77 | 48.1% | 0 |