WN3988
WN3988 (Southwest Airlines) is a multi-stop service on 16 routes, busiest Las Vegas to Indianapolis. Of 539 departures recorded from October 2024 to July 2026, 72.1% left on time, according to the US BTS.
- On-time departures72.1%of 539 flights
- Average delay17.3 min
- July 202640▲ 29.0%vs July 2025
- Cancelled0.2%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 28 | 4 | ▼ 85.7% |
| February | 24 | 1 | ▼ 95.8% |
| March | 24 | 27 | ▲ 12.5% |
| April | 28 | 30 | ▲ 7.1% |
| May | 30 | 31 | ▲ 3.3% |
| June | 30 | 38 | ▲ 26.7% |
| July | 31 | 40 | ▲ 29.0% |
| August | 4 | – | – |
| September | – | – | – |
| October | 50 | – | in progress |
| November | 28 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 195 | 171 | ▼ 12.3% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 71.4% | 100.0% | ▲ 40.0% |
| February | 66.7% | 100.0% | ▲ 50.0% |
| March | 54.2% | 18.5% | ▼ 65.8% |
| April | 71.4% | 76.7% | ▲ 7.3% |
| May | 83.3% | 83.9% | ▲ 0.6% |
| June | 93.3% | 55.3% | ▼ 40.8% |
| July | 93.6% | 50.0% | ▼ 46.6% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 82.0% | – | in progress |
| November | 88.9% | – | – |
| December | 79.3% | – | – |
| Year-to-date average (Jan–Jul) | 76.3% | 69.2% | ▼ 9.3% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 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 99.8% 538
- Cancelled 0.2% 1
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
9| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAS IND Harry Reid International Airport – Indianapolis International Airport | 2,553 | 17.5 min | 70.0% | 110 |
| MKE STL General Mitchell International Airport – St. Louis Lambert International Airport | 511 | 4.6 min | 93.4% | 61 |
| PHX MSP Phoenix Sky Harbor International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 2,051 | 12.0 min | 84.5% | 59 |
| LAS DEN Harry Reid International Airport – Denver International Airport | 1,009 | 4.1 min | 84.5% | 58 |
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 9.4 min | 80.7% | 57 |
| VPS HOU Destin-Fort Walton Beach Airport – William P. Hobby Airport | 848 | 21.4 min | 59.5% | 42 |
| STL VPS St. Louis Lambert International Airport – Destin-Fort Walton Beach Airport | 984 | 30.5 min | 39.4% | 33 |
| DEN LGA Denver International Airport – LaGuardia Airport | 2,600 | 81.4 min | 24.2% | 33 |
| RNO LAS Reno Tahoe International Airport – Harry Reid International Airport | 556 | 3.1 min | 83.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 7 | 7 | 57.1% | 0 |
| November 2024 | 26 | 26 | 76.9% | 0 |
| December 2024 | 29 | 29 | 72.4% | 0 |
| January 2025 | 28 | 28 | 71.4% | 0 |
| February 2025 | 24 | 24 | 66.7% | 0 |
| March 2025 | 24 | 24 | 54.2% | 0 |
| April 2025 | 28 | 28 | 71.4% | 0 |
| May 2025 | 30 | 30 | 83.3% | 0 |
| June 2025 | 30 | 30 | 93.3% | 0 |
| July 2025 | 31 | 31 | 93.6% | 0 |
| August 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 50 | 50 | 82.0% | 0 |
| November 2025 | 28 | 27 | 88.9% | 1 |
| December 2025 | 29 | 29 | 79.3% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| February 2026 | 1 | 1 | 100.0% | 0 |
| March 2026 | 27 | 27 | 18.5% | 0 |
| April 2026 | 30 | 30 | 76.7% | 0 |
| May 2026 | 31 | 31 | 83.9% | 0 |
| June 2026 | 38 | 38 | 55.3% | 0 |
| July 2026 | 40 | 40 | 50.0% | 0 |