WN3251
WN3251 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Denver to Kansas City. Of 602 departures recorded from October 2024 to July 2026, 74.8% left on time, according to the US BTS.
- On-time departures74.8%of 602 flights
- Average delay12.7 min
- July 20264▼ 90.2%vs July 2025
- Cancelled1.0%
- Legs flown under this number32
according to the US BTS · Oct 13, 2024 → Jul 26, 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 | 6 | 30 | ▲ 400.0% |
| February | 10 | 28 | ▲ 180.0% |
| March | 32 | 35 | ▲ 9.4% |
| April | 31 | 31 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 36 | 8 | ▼ 77.8% |
| July | 41 | 4 | ▼ 90.2% |
| August | 38 | – | – |
| September | 38 | – | – |
| October | 26 | – | in progress |
| November | 51 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 187 | 167 | ▼ 10.7% |
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 | 66.7% | 96.6% | ▲ 44.8% |
| February | 80.0% | 85.2% | ▲ 6.5% |
| March | 81.3% | 48.5% | ▼ 40.3% |
| April | 74.2% | 96.8% | ▲ 30.4% |
| May | 74.2% | 87.1% | ▲ 17.4% |
| June | 74.3% | 62.5% | ▼ 15.9% |
| July | 78.1% | 75.0% | ▼ 3.9% |
| August | 65.8% | – | – |
| September | 68.4% | – | – |
| October | 65.4% | – | in progress |
| November | 74.0% | – | – |
| December | 70.0% | – | – |
| Year-to-date average (Jan–Jul) | 75.5% | 78.8% | ▲ 4.3% |
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 | 1 | – |
| February | 0 | 1 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 4 | ▲ 300.0% |
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 99.0% 596
- Cancelled 1.0% 6
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| DEN MCI Denver International Airport – Kansas City International Airport | 855 | 6.9 min | 82.0% | 61 |
| PIT BWI Pittsburgh International Airport – Baltimore/Washington International Thurgood Marshall Airport | 338 | 0.9 min | 92.9% | 58 |
| PHX BWI Phoenix Sky Harbor International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,209 | 3.6 min | 93.1% | 58 |
| BWI PVD Baltimore/Washington International Thurgood Marshall Airport – Rhode Island T. F. Green International Airport | 526 | 16.4 min | 70.2% | 57 |
| PHX ONT Phoenix Sky Harbor International Airport – Ontario International Airport | 522 | 12.0 min | 70.3% | 37 |
| DEN BWI Denver International Airport – Baltimore/Washington International Thurgood Marshall Airport | 2,394 | 12.3 min | 76.5% | 34 |
| AUS MCO Austin Bergstrom International Airport – Orlando International Airport | 1,596 | 24.0 min | 53.1% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 68.8% | 0 |
| November 2024 | 22 | 22 | 72.7% | 0 |
| December 2024 | 27 | 27 | 70.4% | 0 |
| January 2025 | 6 | 6 | 66.7% | 0 |
| February 2025 | 10 | 10 | 80.0% | 0 |
| March 2025 | 32 | 32 | 81.3% | 0 |
| April 2025 | 31 | 31 | 74.2% | 0 |
| May 2025 | 31 | 31 | 74.2% | 0 |
| June 2025 | 36 | 35 | 74.3% | 1 |
| July 2025 | 41 | 41 | 78.1% | 0 |
| August 2025 | 38 | 38 | 65.8% | 0 |
| September 2025 | 38 | 38 | 68.4% | 0 |
| October 2025 | 26 | 26 | 65.4% | 0 |
| November 2025 | 51 | 50 | 74.0% | 1 |
| December 2025 | 30 | 30 | 70.0% | 0 |
| January 2026 | 30 | 29 | 96.6% | 1 |
| February 2026 | 28 | 27 | 85.2% | 1 |
| March 2026 | 35 | 33 | 48.5% | 2 |
| April 2026 | 31 | 31 | 96.8% | 0 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 8 | 8 | 62.5% | 0 |
| July 2026 | 4 | 4 | 75.0% | 0 |