WN2537
WN2537 (Southwest Airlines) is a multi-stop service on 27 routes, busiest Indianapolis to Denver. Of 622 departures recorded from October 2024 to July 2026, 69.7% left on time, according to the US BTS.
- On-time departures69.7%of 622 flights
- Average delay17.4 min
- July 202624▼ 56.4%vs July 2025
- Cancelled0.6%
- Legs flown under this number27
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 | 31 | 11 | ▼ 64.5% |
| February | 28 | 15 | ▼ 46.4% |
| March | 27 | 22 | ▼ 18.5% |
| April | 9 | 43 | ▲ 377.8% |
| May | 5 | 48 | ▲ 860.0% |
| June | 51 | 24 | ▼ 52.9% |
| July | 55 | 24 | ▼ 56.4% |
| August | 35 | – | – |
| September | 30 | – | – |
| October | 26 | – | in progress |
| November | 41 | – | – |
| December | 35 | – | – |
| Year to date (Jan–Jul) | 206 | 187 | ▼ 9.2% |
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 | 80.7% | 63.6% | ▼ 21.1% |
| February | 92.9% | 28.6% | ▼ 69.2% |
| March | 88.9% | 45.5% | ▼ 48.9% |
| April | 77.8% | 83.7% | ▲ 7.6% |
| May | 60.0% | 74.5% | ▲ 24.1% |
| June | 64.7% | 75.0% | ▲ 15.9% |
| July | 60.0% | 58.3% | ▼ 2.8% |
| August | 45.7% | – | – |
| September | 66.7% | – | – |
| October | 73.1% | – | in progress |
| November | 61.5% | – | – |
| December | 54.3% | – | – |
| Year-to-date average (Jan–Jul) | 75.0% | 61.3% | ▼ 18.2% |
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 | 0 | 0 | – |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 2 |
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% 618
- Cancelled 0.6% 4
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| IND DEN Indianapolis International Airport – Denver International Airport | 1,568 | 8.8 min | 88.2% | 85 |
| DEN HOU Denver International Airport – William P. Hobby Airport | 1,422 | 8.0 min | 82.0% | 61 |
| BHM MCO Birmingham-Shuttlesworth International Airport – Orlando International Airport | 771 | 15.9 min | 68.4% | 57 |
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 15.2 min | 66.7% | 42 |
| DEN MDW Denver International Airport – Chicago Midway International Airport | 1,438 | 29.7 min | 47.6% | 42 |
| LAS BUR Harry Reid International Airport – Hollywood Burbank/Bob Hope Airport | 359 | 30.5 min | 62.5% | 41 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 3 | 66.7% | 0 |
| November 2024 | 27 | 27 | 100.0% | 0 |
| December 2024 | 32 | 32 | 90.6% | 0 |
| January 2025 | 31 | 31 | 80.7% | 0 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 27 | 27 | 88.9% | 0 |
| April 2025 | 9 | 9 | 77.8% | 0 |
| May 2025 | 5 | 5 | 60.0% | 0 |
| June 2025 | 51 | 51 | 64.7% | 0 |
| July 2025 | 55 | 55 | 60.0% | 0 |
| August 2025 | 35 | 35 | 45.7% | 0 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 26 | 26 | 73.1% | 0 |
| November 2025 | 41 | 39 | 61.5% | 2 |
| December 2025 | 35 | 35 | 54.3% | 0 |
| January 2026 | 11 | 11 | 63.6% | 0 |
| February 2026 | 15 | 14 | 28.6% | 1 |
| March 2026 | 22 | 22 | 45.5% | 0 |
| April 2026 | 43 | 43 | 83.7% | 0 |
| May 2026 | 48 | 47 | 74.5% | 1 |
| June 2026 | 24 | 24 | 75.0% | 0 |
| July 2026 | 24 | 24 | 58.3% | 0 |