WN3691
WN3691 (Southwest Airlines) is a multi-stop service on 24 routes, busiest Chicago to Tampa. Of 343 departures recorded from October 2024 to July 2026, 75.7% left on time, according to the US BTS.
- On-time departures75.7%of 343 flights
- Average delay11.8 min
- July 202615▲ 1,400.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number24
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 5 | 1 | ▼ 80.0% |
| February | – | 3 | – |
| March | 4 | 35 | ▲ 775.0% |
| April | 15 | 32 | ▲ 113.3% |
| May | 17 | 31 | ▲ 82.4% |
| June | 3 | 15 | ▲ 400.0% |
| July | 1 | 15 | ▲ 1,400.0% |
| August | 26 | – | – |
| September | 30 | – | – |
| October | 22 | – | in progress |
| November | 16 | – | – |
| December | 7 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 80.0% | 100.0% | ▲ 25.0% |
| February | – | 100.0% | – |
| March | 100.0% | 81.8% | ▼ 18.2% |
| April | 100.0% | 81.3% | ▼ 18.8% |
| May | 100.0% | 35.5% | ▼ 64.5% |
| June | 100.0% | 66.7% | ▼ 33.3% |
| July | 0.0% | 20.0% | – |
| August | 80.8% | – | – |
| September | 90.0% | – | – |
| October | 77.3% | – | in progress |
| November | 56.3% | – | – |
| December | 57.1% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 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 99.4% 341
- Cancelled 0.6% 2
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD TPA Chicago O'Hare International Airport – Tampa International Airport | 1,631 | 25.5 min | 53.5% | 58 |
| MDW FLL Chicago Midway International Airport – Fort Lauderdale Hollywood International Airport | 1,881 | 5.9 min | 86.0% | 57 |
| RNO LAS Reno Tahoe International Airport – Harry Reid International Airport | 556 | -3.6 min | 100.0% | 33 |
| MDW MCI Chicago Midway International Airport – Kansas City International Airport | 650 | 5.0 min | 87.1% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 12 | 12 | 66.7% | 0 |
| November 2024 | 33 | 33 | 97.0% | 0 |
| December 2024 | 20 | 20 | 80.0% | 0 |
| January 2025 | 5 | 5 | 80.0% | 0 |
| March 2025 | 4 | 4 | 100.0% | 0 |
| April 2025 | 15 | 15 | 100.0% | 0 |
| May 2025 | 17 | 17 | 100.0% | 0 |
| June 2025 | 3 | 3 | 100.0% | 0 |
| July 2025 | 1 | 1 | 0.0% | 0 |
| August 2025 | 26 | 26 | 80.8% | 0 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 22 | 22 | 77.3% | 0 |
| November 2025 | 16 | 16 | 56.3% | 0 |
| December 2025 | 7 | 7 | 57.1% | 0 |
| January 2026 | 1 | 1 | 100.0% | 0 |
| February 2026 | 3 | 3 | 100.0% | 0 |
| March 2026 | 35 | 33 | 81.8% | 2 |
| April 2026 | 32 | 32 | 81.3% | 0 |
| May 2026 | 31 | 31 | 35.5% | 0 |
| June 2026 | 15 | 15 | 66.7% | 0 |
| July 2026 | 15 | 15 | 20.0% | 0 |