WN1721
WN1721 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Indianapolis to Denver. Of 520 departures recorded from October 2024 to April 2026, 72.6% left on time, according to the US BTS.
- On-time departures72.6%of 520 flights
- Average delay15.4 min
- April 202614▼ 56.3%vs April 2025
- Cancelled0.4%
- Legs flown under this number26
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 24 | 26 | ▲ 8.3% |
| February | 26 | 27 | ▲ 3.8% |
| March | 37 | 66 | ▲ 78.4% |
| April | 32 | 14 | ▼ 56.3% |
| May | 30 | – | – |
| June | 30 | – | – |
| July | 31 | – | – |
| August | 42 | – | – |
| September | 43 | – | – |
| October | 26 | – | in progress |
| November | 23 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Apr) | 119 | 133 | ▲ 11.8% |
according to the US BTS · October 2024 → April 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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 91.7% | 84.6% | ▼ 7.7% |
| February | 73.1% | 81.5% | ▲ 11.5% |
| March | 97.3% | 63.6% | ▼ 34.6% |
| April | 81.3% | 85.7% | ▲ 5.5% |
| May | 93.3% | – | – |
| June | 66.7% | – | – |
| July | 74.2% | – | – |
| August | 29.3% | – | – |
| September | 42.9% | – | – |
| October | 61.5% | – | in progress |
| November | 95.7% | – | – |
| December | 94.1% | – | – |
| Year-to-date average (Jan–Apr) | 85.8% | 78.9% | ▼ 8.1% |
according to the US BTS · October 2024 → April 2026
Average departure delay by month
according to the US BTS · October 2024 → April 2026
Cancelled departures by month
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | – | – |
| July | 0 | – | – |
| August | 1 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Apr) | 0 | 0 |
according to the US BTS · October 2024 → April 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 99.6% 518
- Cancelled 0.4% 2
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Apr 6, 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 | 5.5 min | 89.5% | 57 |
| FAT SAN Fresno Yosemite International Airport – San Diego International Airport | 505 | 5.0 min | 84.9% | 53 |
| SAN SFO San Diego International Airport – San Francisco International Airport | 719 | 47.6 min | 29.3% | 42 |
| DEN SAN Denver International Airport – San Diego International Airport | 1,371 | 42.2 min | 38.5% | 40 |
| ATL TPA Hartsfield Jackson Atlanta International Airport – Tampa International Airport | 655 | 24.0 min | 73.5% | 34 |
| BWI RIC Baltimore/Washington International Thurgood Marshall Airport – Richmond International Airport | 194 | 9.6 min | 69.7% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 78.6% | 0 |
| November 2024 | 4 | 4 | 100.0% | 0 |
| December 2024 | 8 | 8 | 62.5% | 0 |
| January 2025 | 24 | 24 | 91.7% | 0 |
| February 2025 | 26 | 26 | 73.1% | 0 |
| March 2025 | 37 | 37 | 97.3% | 0 |
| April 2025 | 32 | 32 | 81.3% | 0 |
| May 2025 | 30 | 30 | 93.3% | 0 |
| June 2025 | 30 | 30 | 66.7% | 0 |
| July 2025 | 31 | 31 | 74.2% | 0 |
| August 2025 | 42 | 41 | 29.3% | 1 |
| September 2025 | 43 | 42 | 42.9% | 1 |
| October 2025 | 26 | 26 | 61.5% | 0 |
| November 2025 | 23 | 23 | 95.7% | 0 |
| December 2025 | 17 | 17 | 94.1% | 0 |
| January 2026 | 26 | 26 | 84.6% | 0 |
| February 2026 | 27 | 27 | 81.5% | 0 |
| March 2026 | 66 | 66 | 63.6% | 0 |
| April 2026 | 14 | 14 | 85.7% | 0 |