WN3814
WN3814 (Southwest Airlines) is a multi-stop service on 20 routes, busiest Kansas City to Chicago. Of 440 departures recorded from October 2024 to July 2026, 78.4% left on time, according to the US BTS.
- On-time departures78.4%of 440 flights
- Average delay12.0 min
- July 20267▼ 74.1%vs July 2025
- Cancelled1.1%
- Legs flown under this number20
Recorded departures by month
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 | 6 | 29 | ▲ 383.3% |
| February | 15 | 28 | ▲ 86.7% |
| March | 28 | 31 | ▲ 10.7% |
| April | 30 | 37 | ▲ 23.3% |
| May | 31 | 39 | ▲ 25.8% |
| June | 26 | 12 | ▼ 53.8% |
| July | 27 | 7 | ▼ 74.1% |
| August | 20 | – | – |
| September | 17 | – | – |
| October | 14 | – | in progress |
| November | 6 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 163 | 183 | ▲ 12.3% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 66.7% | 92.9% | ▲ 39.3% |
| February | 73.3% | 100.0% | ▲ 36.4% |
| March | 60.7% | 90.0% | ▲ 48.2% |
| April | 76.7% | 94.6% | ▲ 23.4% |
| May | 71.0% | 94.9% | ▲ 33.7% |
| June | 57.7% | 100.0% | ▲ 73.3% |
| July | 55.6% | 83.3% | ▲ 50.0% |
| August | 70.0% | – | – |
| September | 88.2% | – | – |
| October | 42.9% | – | in progress |
| November | 83.3% | – | – |
| December | 18.2% | – | – |
| Year-to-date average (Jan–Jul) | 65.9% | 93.7% | ▲ 42.0% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 2 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 5 |
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 98.9% 435
- Cancelled 1.1% 5
Share of all recorded flights in the period, all legs. · Oct 14, 2024 → Jul 26, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MCI MDW Kansas City International Airport – Chicago Midway International Airport | 650 | 3.7 min | 91.9% | 75 |
| HNL ITO Daniel K. Inouye International Airport – Hilo International Airport | 349 | 7.6 min | 77.6% | 58 |
| STL PHL St. Louis Lambert International Airport – Philadelphia International Airport | 1,306 | -3.6 min | 96.4% | 58 |
| SFO PHX San Francisco International Airport – Phoenix Sky Harbor International Airport | 1,047 | 25.8 min | 51.2% | 43 |
| BNA BDL Nashville International Airport – Bradley International Airport | 1,368 | 11.4 min | 76.5% | 34 |
| BWI PIT Baltimore/Washington International Thurgood Marshall Airport – Pittsburgh International Airport | 338 | 23.3 min | 57.6% | 33 |
| PHX MCI Phoenix Sky Harbor International Airport – Kansas City International Airport | 1,677 | -2.5 min | 100.0% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 100.0% | 0 |
| November 2024 | 14 | 14 | 85.7% | 0 |
| December 2024 | 4 | 4 | 100.0% | 0 |
| January 2025 | 6 | 6 | 66.7% | 0 |
| February 2025 | 15 | 15 | 73.3% | 0 |
| March 2025 | 28 | 28 | 60.7% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 31 | 31 | 71.0% | 0 |
| June 2025 | 26 | 26 | 57.7% | 0 |
| July 2025 | 27 | 27 | 55.6% | 0 |
| August 2025 | 20 | 20 | 70.0% | 0 |
| September 2025 | 17 | 17 | 88.2% | 0 |
| October 2025 | 14 | 14 | 42.9% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 11 | 11 | 18.2% | 0 |
| January 2026 | 29 | 28 | 92.9% | 1 |
| February 2026 | 28 | 26 | 100.0% | 2 |
| March 2026 | 31 | 30 | 90.0% | 1 |
| April 2026 | 37 | 37 | 94.6% | 0 |
| May 2026 | 39 | 39 | 94.9% | 0 |
| June 2026 | 12 | 12 | 100.0% | 0 |
| July 2026 | 7 | 6 | 83.3% | 1 |