WN1535
WN1535 (Southwest Airlines) is a multi-stop service on 39 routes, busiest Chicago to Dallas. Of 633 departures recorded from October 2024 to July 2026, 67.7% left on time, according to the US BTS.
- On-time departures67.7%of 633 flights
- Average delay17.3 min
- July 202622▲ 0.0%vs July 2025
- Cancelled1.7%
- Legs flown under this number39
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 | 27 | 32 | ▲ 18.5% |
| February | 26 | 31 | ▲ 19.2% |
| March | 27 | 31 | ▲ 14.8% |
| April | 32 | 19 | ▼ 40.6% |
| May | 34 | 18 | ▼ 47.1% |
| June | 23 | 20 | ▼ 13.0% |
| July | 22 | 22 | 0.0% |
| August | 52 | – | – |
| September | 57 | – | – |
| October | 28 | – | in progress |
| November | 32 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 191 | 173 | ▼ 9.4% |
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 | 84.0% | 77.4% | ▼ 7.8% |
| February | 80.8% | 58.1% | ▼ 28.1% |
| March | 66.7% | 48.3% | ▼ 27.6% |
| April | 87.1% | 11.1% | ▼ 87.2% |
| May | 66.7% | 17.7% | ▼ 73.5% |
| June | 52.2% | 55.0% | ▲ 5.4% |
| July | 47.6% | 86.4% | ▲ 81.4% |
| August | 71.2% | – | – |
| September | 68.4% | – | – |
| October | 67.9% | – | in progress |
| November | 81.3% | – | – |
| December | 63.6% | – | – |
| Year-to-date average (Jan–Jul) | 69.3% | 50.6% | ▼ 27.0% |
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 | 2 | 1 | ▼ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 1 | 1 | 0.0% |
| May | 1 | 1 | 0.0% |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 5 | 0.0% |
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 98.3% 622
- Cancelled 1.7% 11
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 29, 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 |
|---|---|---|---|---|
| ORD DAL Chicago O'Hare International Airport – Dallas Love Field | 1,285 | 11.5 min | 78.6% | 58 |
| PHX OAK Phoenix Sky Harbor International Airport – Oakland San Francisco Bay Airport | 1,039 | 7.7 min | 78.6% | 42 |
| LAS BUR Harry Reid International Airport – Hollywood Burbank/Bob Hope Airport | 359 | 21.7 min | 61.9% | 42 |
| MCO ORD Orlando International Airport – Chicago O'Hare International Airport | 1,620 | 34.9 min | 43.3% | 33 |
| DAL FLL Dallas Love Field – Fort Lauderdale Hollywood International Airport | 1,780 | 60.4 min | 9.7% | 32 |
| DEN SAN Denver International Airport – San Diego International Airport | 1,371 | 2.9 min | 93.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 11 | 11 | 81.8% | 0 |
| November 2024 | 27 | 27 | 96.3% | 0 |
| December 2024 | 29 | 28 | 78.6% | 1 |
| January 2025 | 27 | 25 | 84.0% | 2 |
| February 2025 | 26 | 26 | 80.8% | 0 |
| March 2025 | 27 | 27 | 66.7% | 0 |
| April 2025 | 32 | 31 | 87.1% | 1 |
| May 2025 | 34 | 33 | 66.7% | 1 |
| June 2025 | 23 | 23 | 52.2% | 0 |
| July 2025 | 22 | 21 | 47.6% | 1 |
| August 2025 | 52 | 52 | 71.2% | 0 |
| September 2025 | 57 | 57 | 68.4% | 0 |
| October 2025 | 28 | 28 | 67.9% | 0 |
| November 2025 | 32 | 32 | 81.3% | 0 |
| December 2025 | 33 | 33 | 63.6% | 0 |
| January 2026 | 32 | 31 | 77.4% | 1 |
| February 2026 | 31 | 31 | 58.1% | 0 |
| March 2026 | 31 | 29 | 48.3% | 2 |
| April 2026 | 19 | 18 | 11.1% | 1 |
| May 2026 | 18 | 17 | 17.7% | 1 |
| June 2026 | 20 | 20 | 55.0% | 0 |
| July 2026 | 22 | 22 | 86.4% | 0 |