WN3797
WN3797 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Chicago to Tampa. Of 590 departures recorded from October 2024 to July 2026, 72.0% left on time, according to the US BTS.
- On-time departures72.0%of 590 flights
- Average delay16.7 min
- July 202631▼ 18.4%vs July 2025
- Cancelled0.7%
- Legs flown under this number28
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 | 21 | 22 | ▲ 4.8% |
| February | 9 | 16 | ▲ 77.8% |
| March | 22 | 34 | ▲ 54.5% |
| April | 28 | 31 | ▲ 10.7% |
| May | 31 | 32 | ▲ 3.2% |
| June | 38 | 30 | ▼ 21.1% |
| July | 38 | 31 | ▼ 18.4% |
| August | 33 | – | – |
| September | 29 | – | – |
| October | 39 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 187 | 196 | ▲ 4.8% |
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 | 70.0% | 81.8% | ▲ 16.9% |
| February | 88.9% | 87.5% | ▼ 1.6% |
| March | 54.6% | 47.1% | ▼ 13.7% |
| April | 71.4% | 71.0% | ▼ 0.6% |
| May | 56.7% | 53.1% | ▼ 6.2% |
| June | 55.3% | 82.8% | ▲ 49.8% |
| July | 57.9% | 93.6% | ▲ 61.6% |
| August | 81.8% | – | – |
| September | 100.0% | – | – |
| October | 89.7% | – | in progress |
| November | 64.3% | – | – |
| December | 54.8% | – | – |
| Year-to-date average (Jan–Jul) | 65.0% | 73.8% | ▲ 13.7% |
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 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
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 99.3% 586
- Cancelled 0.7% 4
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW TPA Chicago Midway International Airport – Tampa International Airport | 1,607 | 20.2 min | 60.3% | 64 |
| SAN MDW San Diego International Airport – Chicago Midway International Airport | 2,776 | 32.9 min | 45.0% | 60 |
| LGA HOU LaGuardia Airport – William P. Hobby Airport | 2,295 | 27.3 min | 66.7% | 58 |
| HOU BWI William P. Hobby Airport – Baltimore/Washington International Thurgood Marshall Airport | 2,003 | 2.0 min | 91.2% | 58 |
| MKE DEN General Mitchell International Airport – Denver International Airport | 1,438 | 4.6 min | 98.3% | 57 |
| HOU MCI William P. Hobby Airport – Kansas City International Airport | 1,075 | 22.4 min | 52.4% | 42 |
| STL MCO St. Louis Lambert International Airport – Orlando International Airport | 1,420 | 14.5 min | 86.1% | 36 |
| STL DAL St. Louis Lambert International Airport – Dallas Love Field | 878 | 24.8 min | 51.5% | 33 |
| DCA MDW Ronald Reagan Washington National Airport – Chicago Midway International Airport | 964 | 0.9 min | 96.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 90.0% | 0 |
| November 2024 | 18 | 18 | 100.0% | 0 |
| December 2024 | 18 | 18 | 83.3% | 0 |
| January 2025 | 21 | 20 | 70.0% | 1 |
| February 2025 | 9 | 9 | 88.9% | 0 |
| March 2025 | 22 | 22 | 54.6% | 0 |
| April 2025 | 28 | 28 | 71.4% | 0 |
| May 2025 | 31 | 30 | 56.7% | 1 |
| June 2025 | 38 | 38 | 55.3% | 0 |
| July 2025 | 38 | 38 | 57.9% | 0 |
| August 2025 | 33 | 33 | 81.8% | 0 |
| September 2025 | 29 | 29 | 100.0% | 0 |
| October 2025 | 39 | 39 | 89.7% | 0 |
| November 2025 | 29 | 28 | 64.3% | 1 |
| December 2025 | 31 | 31 | 54.8% | 0 |
| January 2026 | 22 | 22 | 81.8% | 0 |
| February 2026 | 16 | 16 | 87.5% | 0 |
| March 2026 | 34 | 34 | 47.1% | 0 |
| April 2026 | 31 | 31 | 71.0% | 0 |
| May 2026 | 32 | 32 | 53.1% | 0 |
| June 2026 | 30 | 29 | 82.8% | 1 |
| July 2026 | 31 | 31 | 93.6% | 0 |