WN1637
WN1637 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Washington to Orlando. Of 682 departures recorded from October 2024 to July 2026, 75.2% left on time, according to the US BTS.
- On-time departures75.2%of 682 flights
- Average delay12.7 min
- July 20265▼ 88.9%vs July 2025
- Cancelled0.3%
- 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 | 48 | 27 | ▼ 43.8% |
| February | 35 | 27 | ▼ 22.9% |
| March | 38 | 31 | ▼ 18.4% |
| April | 32 | 30 | ▼ 6.3% |
| May | 31 | 31 | 0.0% |
| June | 40 | 7 | ▼ 82.5% |
| July | 45 | 5 | ▼ 88.9% |
| August | 42 | – | – |
| September | 43 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 269 | 158 | ▼ 41.3% |
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 | 93.5% | 59.3% | ▼ 36.6% |
| February | 97.1% | 63.0% | ▼ 35.2% |
| March | 79.0% | 74.2% | ▼ 6.0% |
| April | 87.5% | 56.7% | ▼ 35.2% |
| May | 74.2% | 29.0% | ▼ 60.9% |
| June | 72.5% | 42.9% | ▼ 40.9% |
| July | 82.2% | 60.0% | ▼ 27.0% |
| August | 76.2% | – | – |
| September | 76.7% | – | – |
| October | 100.0% | – | in progress |
| November | 79.3% | – | – |
| December | 51.6% | – | – |
| Year-to-date average (Jan–Jul) | 83.7% | 55.0% | ▼ 34.3% |
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 | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 0 | ▼ 100.0% |
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 99.7% 680
- Cancelled 0.3% 2
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 26, 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 | 23 | 23 | 82.6% | 0 |
| November 2024 | 20 | 20 | 90.0% | 0 |
| December 2024 | 36 | 36 | 75.0% | 0 |
| January 2025 | 48 | 46 | 93.5% | 2 |
| February 2025 | 35 | 35 | 97.1% | 0 |
| March 2025 | 38 | 38 | 79.0% | 0 |
| April 2025 | 32 | 32 | 87.5% | 0 |
| May 2025 | 31 | 31 | 74.2% | 0 |
| June 2025 | 40 | 40 | 72.5% | 0 |
| July 2025 | 45 | 45 | 82.2% | 0 |
| August 2025 | 42 | 42 | 76.2% | 0 |
| September 2025 | 43 | 43 | 76.7% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 29 | 29 | 79.3% | 0 |
| December 2025 | 31 | 31 | 51.6% | 0 |
| January 2026 | 27 | 27 | 59.3% | 0 |
| February 2026 | 27 | 27 | 63.0% | 0 |
| March 2026 | 31 | 31 | 74.2% | 0 |
| April 2026 | 30 | 30 | 56.7% | 0 |
| May 2026 | 31 | 31 | 29.0% | 0 |
| June 2026 | 7 | 7 | 42.9% | 0 |
| July 2026 | 5 | 5 | 60.0% | 0 |