WN2811
WN2811 (Southwest Airlines) is a multi-stop service on 32 routes, busiest St Louis to Denver. Of 588 departures recorded from October 2024 to July 2026, 71.8% left on time, according to the US BTS.
- On-time departures71.8%of 588 flights
- Average delay15.3 min
- July 202629▼ 43.1%vs July 2025
- Cancelled1.7%
- Legs flown under this number32
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 30 | ▲ 650.0% |
| February | 10 | 21 | ▲ 110.0% |
| March | 28 | 30 | ▲ 7.1% |
| April | 27 | 6 | ▼ 77.8% |
| May | 26 | – | – |
| June | 50 | 26 | ▼ 48.0% |
| July | 51 | 29 | ▼ 43.1% |
| August | 24 | – | – |
| September | 22 | – | – |
| October | 74 | – | in progress |
| November | 28 | – | – |
| 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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 50.0% | 96.4% | ▲ 92.9% |
| February | 100.0% | 95.2% | ▼ 4.8% |
| March | 71.4% | 96.7% | ▲ 35.3% |
| April | 85.2% | 100.0% | ▲ 17.4% |
| May | 100.0% | – | – |
| June | 36.0% | 30.8% | ▼ 14.5% |
| July | 26.1% | 48.3% | ▲ 85.1% |
| August | 78.3% | – | – |
| September | 77.3% | – | – |
| October | 81.1% | – | in progress |
| November | 81.5% | – | – |
| December | 85.7% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 5 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
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 98.3% 578
- Cancelled 1.7% 10
Share of all recorded flights in the period, all legs. · Oct 14, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| STL DEN St. Louis Lambert International Airport – Denver International Airport | 1,236 | 52.8 min | 28.0% | 52 |
| MDW PHX Chicago Midway International Airport – Phoenix Sky Harbor International Airport | 2,319 | -3.3 min | 100.0% | 50 |
| MAF HOU Midland International Air and Space Port – William P. Hobby Airport | 709 | 0.1 min | 97.8% | 47 |
| DEN ANC Denver International Airport – Ted Stevens Anchorage International Airport | 3,863 | 41.4 min | 29.8% | 47 |
| HOU ATL William P. Hobby Airport – Hartsfield Jackson Atlanta International Airport | 1,118 | 5.0 min | 88.9% | 46 |
| PHX BWI Phoenix Sky Harbor International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,209 | 7.2 min | 83.3% | 42 |
| GEG PHX Spokane International Airport – Phoenix Sky Harbor International Airport | 1,644 | -0.5 min | 97.0% | 33 |
| AUS SJC Austin Bergstrom International Airport – Mineta San Jose International Airport | 2,372 | 16.3 min | 63.6% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 22 | 22 | 90.9% | 0 |
| November 2024 | 31 | 31 | 77.4% | 0 |
| December 2024 | 20 | 20 | 75.0% | 0 |
| January 2025 | 4 | 4 | 50.0% | 0 |
| February 2025 | 10 | 10 | 100.0% | 0 |
| March 2025 | 28 | 28 | 71.4% | 0 |
| April 2025 | 27 | 27 | 85.2% | 0 |
| May 2025 | 26 | 26 | 100.0% | 0 |
| June 2025 | 50 | 50 | 36.0% | 0 |
| July 2025 | 51 | 46 | 26.1% | 5 |
| August 2025 | 24 | 23 | 78.3% | 1 |
| September 2025 | 22 | 22 | 77.3% | 0 |
| October 2025 | 74 | 74 | 81.1% | 0 |
| November 2025 | 28 | 27 | 81.5% | 1 |
| December 2025 | 29 | 28 | 85.7% | 1 |
| January 2026 | 30 | 28 | 96.4% | 2 |
| February 2026 | 21 | 21 | 95.2% | 0 |
| March 2026 | 30 | 30 | 96.7% | 0 |
| April 2026 | 6 | 6 | 100.0% | 0 |
| June 2026 | 26 | 26 | 30.8% | 0 |
| July 2026 | 29 | 29 | 48.3% | 0 |