WN1737
WN1737 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Chicago to New York. Of 593 departures recorded from October 2024 to July 2026, 72.6% left on time, according to the US BTS.
- On-time departures72.6%of 593 flights
- Average delay17.9 min
- July 202631▲ 3.3%vs July 2025
- Cancelled1.0%
- Legs flown under this number26
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 27 | 14 | ▼ 48.1% |
| February | 40 | 19 | ▼ 52.5% |
| March | 32 | 41 | ▲ 28.1% |
| April | 21 | 30 | ▲ 42.9% |
| May | 17 | 27 | ▲ 58.8% |
| June | 29 | 30 | ▲ 3.4% |
| July | 30 | 31 | ▲ 3.3% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 196 | 192 | ▼ 2.0% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 80.8% | 83.3% | ▲ 3.2% |
| February | 77.5% | 47.4% | ▼ 38.9% |
| March | 90.6% | 55.0% | ▼ 39.3% |
| April | 90.5% | 80.0% | ▼ 11.6% |
| May | 100.0% | 85.2% | ▼ 14.8% |
| June | 69.0% | 46.7% | ▼ 32.3% |
| July | 75.0% | 25.8% | ▼ 65.6% |
| August | 55.6% | – | – |
| September | 53.9% | – | – |
| October | 81.5% | – | in progress |
| November | 86.2% | – | – |
| December | 93.6% | – | – |
| Year-to-date average (Jan–Jul) | 83.3% | 60.5% | ▼ 27.4% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 2 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 3 | 0.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.0% 587
- Cancelled 1.0% 6
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW LGA Chicago Midway International Airport – LaGuardia Airport | 1,164 | 17.2 min | 74.0% | 74 |
| PWM BWI Portland International Jetport – Baltimore/Washington International Thurgood Marshall Airport | 727 | 15.4 min | 89.1% | 64 |
| BWI JAX Baltimore/Washington International Thurgood Marshall Airport – Jacksonville International Airport | 1,068 | 35.2 min | 69.0% | 60 |
| DEN SLC Denver International Airport – Salt Lake City International Airport | 628 | 50.0 min | 31.6% | 57 |
| DEN ONT Denver International Airport – Ontario International Airport | 1,316 | 20.6 min | 56.9% | 51 |
| DCA MCI Ronald Reagan Washington National Airport – Kansas City International Airport | 1,524 | -1.6 min | 90.0% | 50 |
| CLE BWI Cleveland Hopkins International Airport – Baltimore/Washington International Thurgood Marshall Airport | 505 | -4.3 min | 100.0% | 34 |
| VPS BNA Destin-Fort Walton Beach Airport – Nashville International Airport | 628 | 8.2 min | 90.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 23 | 23 | 100.0% | 0 |
| November 2024 | 15 | 15 | 93.3% | 0 |
| December 2024 | 27 | 27 | 59.3% | 0 |
| January 2025 | 27 | 26 | 80.8% | 1 |
| February 2025 | 40 | 40 | 77.5% | 0 |
| March 2025 | 32 | 32 | 90.6% | 0 |
| April 2025 | 21 | 21 | 90.5% | 0 |
| May 2025 | 17 | 17 | 100.0% | 0 |
| June 2025 | 29 | 29 | 69.0% | 0 |
| July 2025 | 30 | 28 | 75.0% | 2 |
| August 2025 | 27 | 27 | 55.6% | 0 |
| September 2025 | 26 | 26 | 53.9% | 0 |
| October 2025 | 27 | 27 | 81.5% | 0 |
| November 2025 | 29 | 29 | 86.2% | 0 |
| December 2025 | 31 | 31 | 93.6% | 0 |
| January 2026 | 14 | 12 | 83.3% | 2 |
| February 2026 | 19 | 19 | 47.4% | 0 |
| March 2026 | 41 | 40 | 55.0% | 1 |
| April 2026 | 30 | 30 | 80.0% | 0 |
| May 2026 | 27 | 27 | 85.2% | 0 |
| June 2026 | 30 | 30 | 46.7% | 0 |
| July 2026 | 31 | 31 | 25.8% | 0 |