WN203
WN203 (Southwest Airlines) is a multi-stop service on 37 routes, busiest Birmingham to Chicago. Of 848 departures recorded from October 2024 to July 2026, 71.0% left on time, according to the US BTS.
- On-time departures71.0%of 848 flights
- Average delay17.9 min
- July 202617▼ 67.3%vs July 2025
- Cancelled1.2%
- Legs flown under this number37
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 | 47 | 31 | ▼ 34.0% |
| February | 35 | 28 | ▼ 20.0% |
| March | 39 | 31 | ▼ 20.5% |
| April | 41 | 56 | ▲ 36.6% |
| May | 45 | 67 | ▲ 48.9% |
| June | 49 | 20 | ▼ 59.2% |
| July | 52 | 17 | ▼ 67.3% |
| August | 41 | – | – |
| September | 39 | – | – |
| October | 58 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 308 | 250 | ▼ 18.8% |
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 | 61.7% | 89.7% | ▲ 45.3% |
| February | 82.9% | 82.1% | ▼ 0.9% |
| March | 89.5% | 48.3% | ▼ 46.0% |
| April | 90.0% | 75.0% | ▼ 16.7% |
| May | 82.2% | 57.6% | ▼ 30.0% |
| June | 57.1% | 40.0% | ▼ 30.0% |
| July | 49.0% | 52.9% | ▲ 8.0% |
| August | 46.3% | – | – |
| September | 60.5% | – | – |
| October | 72.4% | – | in progress |
| November | 100.0% | – | – |
| December | 90.3% | – | – |
| Year-to-date average (Jan–Jul) | 73.2% | 63.7% | ▼ 13.0% |
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 | 2 | – |
| February | 0 | 0 | – |
| March | 1 | 2 | ▲ 100.0% |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 5 | ▲ 66.7% |
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% 838
- Cancelled 1.2% 10
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
9Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 32 | 32 | 93.8% | 0 |
| December 2024 | 39 | 38 | 73.7% | 1 |
| January 2025 | 47 | 47 | 61.7% | 0 |
| February 2025 | 35 | 35 | 82.9% | 0 |
| March 2025 | 39 | 38 | 89.5% | 1 |
| April 2025 | 41 | 40 | 90.0% | 1 |
| May 2025 | 45 | 45 | 82.2% | 0 |
| June 2025 | 49 | 49 | 57.1% | 0 |
| July 2025 | 52 | 51 | 49.0% | 1 |
| August 2025 | 41 | 41 | 46.3% | 0 |
| September 2025 | 39 | 38 | 60.5% | 1 |
| October 2025 | 58 | 58 | 72.4% | 0 |
| November 2025 | 30 | 30 | 100.0% | 0 |
| December 2025 | 31 | 31 | 90.3% | 0 |
| January 2026 | 31 | 29 | 89.7% | 2 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 29 | 48.3% | 2 |
| April 2026 | 56 | 56 | 75.0% | 0 |
| May 2026 | 67 | 66 | 57.6% | 1 |
| June 2026 | 20 | 20 | 40.0% | 0 |
| July 2026 | 17 | 17 | 52.9% | 0 |