WN1634
WN1634 (Southwest Airlines) is a multi-stop service on 25 routes, busiest New York to Chicago. Of 633 departures recorded from October 2024 to July 2026, 67.4% left on time, according to the US BTS.
- On-time departures67.4%of 633 flights
- Average delay18.5 min
- July 202631▲ 3.3%vs July 2025
- Cancelled1.7%
- Legs flown under this number25
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 | 28 | 32 | ▲ 14.3% |
| February | 26 | 25 | ▼ 3.8% |
| March | 19 | 35 | ▲ 84.2% |
| April | 27 | 31 | ▲ 14.8% |
| May | 30 | 31 | ▲ 3.3% |
| June | 30 | 30 | 0.0% |
| July | 30 | 31 | ▲ 3.3% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 17 | – | in progress |
| November | 31 | – | – |
| December | 38 | – | – |
| Year to date (Jan–Jul) | 190 | 215 | ▲ 13.2% |
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 | 85.2% | 93.8% | ▲ 10.0% |
| February | 92.3% | 82.6% | ▼ 10.5% |
| March | 68.4% | 97.1% | ▲ 41.9% |
| April | 92.6% | 71.0% | ▼ 23.4% |
| May | 86.7% | 25.8% | ▼ 70.2% |
| June | 41.4% | 27.6% | ▼ 33.3% |
| July | 28.6% | 13.3% | ▼ 53.3% |
| August | 64.5% | – | – |
| September | 66.7% | – | – |
| October | 82.4% | – | in progress |
| November | 87.1% | – | – |
| December | 63.2% | – | – |
| Year-to-date average (Jan–Jul) | 70.7% | 58.7% | ▼ 17.0% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 2 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 1 | 0.0% |
| July | 2 | 1 | ▼ 50.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 5 | ▲ 25.0% |
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 98.3% 622
- Cancelled 1.7% 11
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 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 | 23 | 23 | 52.2% | 0 |
| November 2024 | 29 | 28 | 92.9% | 1 |
| December 2024 | 29 | 28 | 75.0% | 1 |
| January 2025 | 28 | 27 | 85.2% | 1 |
| February 2025 | 26 | 26 | 92.3% | 0 |
| March 2025 | 19 | 19 | 68.4% | 0 |
| April 2025 | 27 | 27 | 92.6% | 0 |
| May 2025 | 30 | 30 | 86.7% | 0 |
| June 2025 | 30 | 29 | 41.4% | 1 |
| July 2025 | 30 | 28 | 28.6% | 2 |
| August 2025 | 31 | 31 | 64.5% | 0 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 17 | 17 | 82.4% | 0 |
| November 2025 | 31 | 31 | 87.1% | 0 |
| December 2025 | 38 | 38 | 63.2% | 0 |
| January 2026 | 32 | 32 | 93.8% | 0 |
| February 2026 | 25 | 23 | 82.6% | 2 |
| March 2026 | 35 | 34 | 97.1% | 1 |
| April 2026 | 31 | 31 | 71.0% | 0 |
| May 2026 | 31 | 31 | 25.8% | 0 |
| June 2026 | 30 | 29 | 27.6% | 1 |
| July 2026 | 31 | 30 | 13.3% | 1 |