WN2778
WN2778 (Southwest Airlines) is a multi-stop service on 23 routes, busiest St Louis to Des Moines. Of 429 departures recorded from October 2024 to July 2026, 66.3% left on time, according to the US BTS.
- On-time departures66.3%of 429 flights
- Average delay16.7 min
- July 20263
- Cancelled1.2%
- Legs flown under this number23
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 27 | ▼ 12.9% |
| February | 28 | 20 | ▼ 28.6% |
| March | 25 | 30 | ▲ 20.0% |
| April | 17 | 19 | ▲ 11.8% |
| May | 19 | 18 | ▼ 5.3% |
| June | 2 | 5 | ▲ 150.0% |
| July | – | 3 | – |
| August | – | – | – |
| September | – | – | – |
| October | 56 | – | in progress |
| November | 26 | – | – |
| December | 29 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 82.8% | 84.6% | ▲ 2.2% |
| February | 85.7% | 95.0% | ▲ 10.8% |
| March | 70.8% | 36.7% | ▼ 48.2% |
| April | 70.6% | 42.1% | ▼ 40.3% |
| May | 47.4% | 33.3% | ▼ 29.6% |
| June | 0.0% | 80.0% | – |
| July | – | 100.0% | – |
| August | – | – | – |
| September | – | – | – |
| October | 39.3% | – | in progress |
| November | 92.0% | – | – |
| December | 79.3% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 1 | ▼ 50.0% |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| 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 98.8% 424
- Cancelled 1.2% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 25, 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 |
|---|---|---|---|---|
| STL DSM St. Louis Lambert International Airport – Des Moines International Airport | 417 | 7.3 min | 80.4% | 110 |
| OKC LAS OKC Will Rogers World Airport – Harry Reid International Airport | 1,584 | -1.4 min | 92.7% | 42 |
| HOU LAS William P. Hobby Airport – Harry Reid International Airport | 1,985 | 7.0 min | 87.5% | 41 |
| LAS SJC Harry Reid International Airport – Mineta San Jose International Airport | 620 | 34.8 min | 40.6% | 32 |
| SFO LAS San Francisco International Airport – Harry Reid International Airport | 665 | 24.9 min | 50.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 64.3% | 0 |
| November 2024 | 27 | 27 | 92.6% | 0 |
| December 2024 | 33 | 33 | 60.6% | 0 |
| January 2025 | 31 | 29 | 82.8% | 2 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 25 | 24 | 70.8% | 1 |
| April 2025 | 17 | 17 | 70.6% | 0 |
| May 2025 | 19 | 19 | 47.4% | 0 |
| June 2025 | 2 | 2 | 0.0% | 0 |
| October 2025 | 56 | 56 | 39.3% | 0 |
| November 2025 | 26 | 25 | 92.0% | 1 |
| December 2025 | 29 | 29 | 79.3% | 0 |
| January 2026 | 27 | 26 | 84.6% | 1 |
| February 2026 | 20 | 20 | 95.0% | 0 |
| March 2026 | 30 | 30 | 36.7% | 0 |
| April 2026 | 19 | 19 | 42.1% | 0 |
| May 2026 | 18 | 18 | 33.3% | 0 |
| June 2026 | 5 | 5 | 80.0% | 0 |
| July 2026 | 3 | 3 | 100.0% | 0 |