WN3506
WN3506 (Southwest Airlines) is a multi-stop service on 31 routes, busiest Los Angeles to Chicago. Of 468 departures recorded from October 2024 to July 2026, 72.8% left on time, according to the US BTS.
- On-time departures72.8%of 468 flights
- Average delay11.7 min
- July 202618▼ 41.9%vs July 2025
- Cancelled0.9%
- Legs flown under this number31
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 | 13 | 4 | ▼ 69.2% |
| February | 10 | 1 | ▼ 90.0% |
| March | 48 | 27 | ▼ 43.8% |
| April | 62 | 19 | ▼ 69.4% |
| May | 71 | 17 | ▼ 76.1% |
| June | 33 | 17 | ▼ 48.5% |
| July | 31 | 18 | ▼ 41.9% |
| August | 7 | – | – |
| September | 4 | – | – |
| October | 14 | – | in progress |
| November | 4 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 268 | 103 | ▼ 61.6% |
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 | 100.0% | 75.0% | ▼ 25.0% |
| February | 100.0% | 100.0% | 0.0% |
| March | 81.3% | 96.2% | ▲ 18.3% |
| April | 69.4% | 63.2% | ▼ 8.9% |
| May | 70.4% | 29.4% | ▼ 58.2% |
| June | 69.7% | 50.0% | ▼ 28.3% |
| July | 71.0% | 61.1% | ▼ 13.9% |
| August | 28.6% | – | – |
| September | 50.0% | – | – |
| October | 92.9% | – | in progress |
| November | 50.0% | – | – |
| December | 50.0% | – | – |
| Year-to-date average (Jan–Jul) | 80.2% | 67.8% | ▼ 15.5% |
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 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 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 99.1% 464
- Cancelled 0.9% 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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX MDW Los Angeles International Airport – Chicago Midway International Airport | 2,812 | 16.5 min | 67.2% | 61 |
| BZN LAS Bozeman Yellowstone International Airport – Harry Reid International Airport | 1,129 | 0.6 min | 88.1% | 42 |
| LAS PHX Harry Reid International Airport – Phoenix Sky Harbor International Airport | 411 | 14.9 min | 61.5% | 39 |
| RNO SAN Reno Tahoe International Airport – San Diego International Airport | 787 | 16.1 min | 57.6% | 34 |
| STL OMA St. Louis Lambert International Airport – Eppley Airfield | 549 | -1.4 min | 93.8% | 33 |
| BWI CLE Baltimore/Washington International Thurgood Marshall Airport – Cleveland Hopkins International Airport | 505 | 1.6 min | 96.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 25 | 96.0% | 1 |
| November 2024 | 24 | 24 | 83.3% | 0 |
| December 2024 | 16 | 16 | 62.5% | 0 |
| January 2025 | 13 | 12 | 100.0% | 1 |
| February 2025 | 10 | 10 | 100.0% | 0 |
| March 2025 | 48 | 48 | 81.3% | 0 |
| April 2025 | 62 | 62 | 69.4% | 0 |
| May 2025 | 71 | 71 | 70.4% | 0 |
| June 2025 | 33 | 33 | 69.7% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 7 | 7 | 28.6% | 0 |
| September 2025 | 4 | 4 | 50.0% | 0 |
| October 2025 | 14 | 14 | 92.9% | 0 |
| November 2025 | 4 | 4 | 50.0% | 0 |
| December 2025 | 2 | 2 | 50.0% | 0 |
| January 2026 | 4 | 4 | 75.0% | 0 |
| February 2026 | 1 | 1 | 100.0% | 0 |
| March 2026 | 27 | 26 | 96.2% | 1 |
| April 2026 | 19 | 19 | 63.2% | 0 |
| May 2026 | 17 | 17 | 29.4% | 0 |
| June 2026 | 17 | 16 | 50.0% | 1 |
| July 2026 | 18 | 18 | 61.1% | 0 |