WN3309
WN3309 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Denver to St Louis. Of 701 departures recorded from October 2024 to July 2026, 72.5% left on time, according to the US BTS.
- On-time departures72.5%of 701 flights
- Average delay14.6 min
- July 202618▼ 60.9%vs July 2025
- Cancelled1.0%
- Legs flown under this number28
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 | 30 | 14 | ▼ 53.3% |
| February | 28 | 11 | ▼ 60.7% |
| March | 31 | 40 | ▲ 29.0% |
| April | 17 | 35 | ▲ 105.9% |
| May | 12 | 36 | ▲ 200.0% |
| June | 45 | 19 | ▼ 57.8% |
| July | 46 | 18 | ▼ 60.9% |
| August | 45 | – | – |
| September | 43 | – | – |
| October | 62 | – | in progress |
| November | 46 | – | – |
| December | 54 | – | – |
| Year to date (Jan–Jul) | 209 | 173 | ▼ 17.2% |
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 | 60.7% | 71.4% | ▲ 17.7% |
| February | 53.6% | 45.5% | ▼ 15.2% |
| March | 93.3% | 56.4% | ▼ 39.6% |
| April | 94.1% | 65.7% | ▼ 30.2% |
| May | 100.0% | 52.8% | ▼ 47.2% |
| June | 73.3% | 79.0% | ▲ 7.7% |
| July | 82.2% | 88.9% | ▲ 8.1% |
| August | 62.2% | – | – |
| September | 88.4% | – | – |
| October | 77.4% | – | in progress |
| November | 71.1% | – | – |
| December | 70.4% | – | – |
| Year-to-date average (Jan–Jul) | 79.6% | 65.7% | ▼ 17.5% |
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 | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 1 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 99.0% 694
- Cancelled 1.0% 7
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 83.3% | 0 |
| November 2024 | 25 | 24 | 70.8% | 1 |
| December 2024 | 26 | 26 | 73.1% | 0 |
| January 2025 | 30 | 28 | 60.7% | 2 |
| February 2025 | 28 | 28 | 53.6% | 0 |
| March 2025 | 31 | 30 | 93.3% | 1 |
| April 2025 | 17 | 17 | 94.1% | 0 |
| May 2025 | 12 | 12 | 100.0% | 0 |
| June 2025 | 45 | 45 | 73.3% | 0 |
| July 2025 | 46 | 45 | 82.2% | 1 |
| August 2025 | 45 | 45 | 62.2% | 0 |
| September 2025 | 43 | 43 | 88.4% | 0 |
| October 2025 | 62 | 62 | 77.4% | 0 |
| November 2025 | 46 | 45 | 71.1% | 1 |
| December 2025 | 54 | 54 | 70.4% | 0 |
| January 2026 | 14 | 14 | 71.4% | 0 |
| February 2026 | 11 | 11 | 45.5% | 0 |
| March 2026 | 40 | 39 | 56.4% | 1 |
| April 2026 | 35 | 35 | 65.7% | 0 |
| May 2026 | 36 | 36 | 52.8% | 0 |
| June 2026 | 19 | 19 | 79.0% | 0 |
| July 2026 | 18 | 18 | 88.9% | 0 |