WN3340
WN3340 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Chicago to Phoenix. Of 447 departures recorded from October 2024 to July 2026, 75.7% left on time, according to the US BTS.
- On-time departures75.7%of 447 flights
- Average delay15.8 min
- July 20263▼ 92.3%vs July 2025
- Cancelled0.7%
- Legs flown under this number26
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 | 4 | 10 | ▲ 150.0% |
| February | 8 | 21 | ▲ 162.5% |
| March | 37 | 41 | ▲ 10.8% |
| April | 13 | 33 | ▲ 153.8% |
| May | 4 | 30 | ▲ 650.0% |
| June | 35 | 7 | ▼ 80.0% |
| July | 39 | 3 | ▼ 92.3% |
| August | 25 | – | – |
| September | 22 | – | – |
| October | 5 | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 140 | 145 | ▲ 3.6% |
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 | 66.7% | 70.0% | ▲ 5.0% |
| February | 62.5% | 81.0% | ▲ 29.5% |
| March | 81.1% | 70.7% | ▼ 12.8% |
| April | 61.5% | 93.9% | ▲ 52.6% |
| May | 75.0% | 93.3% | ▲ 24.4% |
| June | 68.6% | 100.0% | ▲ 45.8% |
| July | 70.3% | 100.0% | ▲ 42.3% |
| August | 60.0% | – | – |
| September | 50.0% | – | – |
| October | 100.0% | – | in progress |
| November | 75.0% | – | – |
| December | 77.4% | – | – |
| Year-to-date average (Jan–Jul) | 69.4% | 87.0% | ▲ 25.4% |
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 | 0 | – |
| 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 | 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 99.3% 444
- Cancelled 0.7% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 25, 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 |
|---|---|---|---|---|
| MDW PHX Chicago Midway International Airport – Phoenix Sky Harbor International Airport | 2,319 | -1.6 min | 96.5% | 57 |
| LAS SLC Harry Reid International Airport – Salt Lake City International Airport | 592 | 20.3 min | 54.8% | 42 |
| DEN MSP Denver International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 1,092 | 13.9 min | 76.2% | 42 |
| STL MIA St. Louis Lambert International Airport – Miami International Airport | 1,722 | 15.8 min | 67.7% | 35 |
| BWI ORF Baltimore/Washington International Thurgood Marshall Airport – Norfolk International Airport | 257 | 7.8 min | 78.8% | 34 |
| SRQ DEN Sarasota Bradenton International Airport – Denver International Airport | 2,462 | 44.0 min | 63.6% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 94.1% | 0 |
| November 2024 | 20 | 20 | 85.0% | 0 |
| December 2024 | 14 | 14 | 50.0% | 0 |
| January 2025 | 4 | 3 | 66.7% | 1 |
| February 2025 | 8 | 8 | 62.5% | 0 |
| March 2025 | 37 | 37 | 81.1% | 0 |
| April 2025 | 13 | 13 | 61.5% | 0 |
| May 2025 | 4 | 4 | 75.0% | 0 |
| June 2025 | 35 | 35 | 68.6% | 0 |
| July 2025 | 39 | 37 | 70.3% | 2 |
| August 2025 | 25 | 25 | 60.0% | 0 |
| September 2025 | 22 | 22 | 50.0% | 0 |
| October 2025 | 5 | 5 | 100.0% | 0 |
| November 2025 | 28 | 28 | 75.0% | 0 |
| December 2025 | 31 | 31 | 77.4% | 0 |
| January 2026 | 10 | 10 | 70.0% | 0 |
| February 2026 | 21 | 21 | 81.0% | 0 |
| March 2026 | 41 | 41 | 70.7% | 0 |
| April 2026 | 33 | 33 | 93.9% | 0 |
| May 2026 | 30 | 30 | 93.3% | 0 |
| June 2026 | 7 | 7 | 100.0% | 0 |
| July 2026 | 3 | 3 | 100.0% | 0 |