WN310
WN310 (Southwest Airlines) is a multi-stop service on 36 routes, busiest Indianapolis to Atlanta. Of 648 departures recorded from October 2024 to July 2026, 77.8% left on time, according to the US BTS.
- On-time departures77.8%of 648 flights
- Average delay12.4 min
- July 202635▲ 16.7%vs July 2025
- Cancelled0.6%
- Legs flown under this number36
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 | 28 | ▼ 9.7% |
| February | 28 | 20 | ▼ 28.6% |
| March | 15 | 30 | ▲ 100.0% |
| April | 35 | 30 | ▼ 14.3% |
| May | 45 | 31 | ▼ 31.1% |
| June | 31 | 34 | ▲ 9.7% |
| July | 30 | 35 | ▲ 16.7% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 39 | – | in progress |
| November | 24 | – | – |
| December | 18 | – | – |
| Year to date (Jan–Jul) | 215 | 208 | ▼ 3.3% |
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 | 82.8% | 82.1% | ▼ 0.7% |
| February | 78.6% | 90.0% | ▲ 14.5% |
| March | 100.0% | 80.0% | ▼ 20.0% |
| April | 91.4% | 83.3% | ▼ 8.9% |
| May | 86.4% | 71.0% | ▼ 17.8% |
| June | 51.6% | 52.9% | ▲ 2.6% |
| July | 63.3% | 55.9% | ▼ 11.8% |
| August | 73.3% | – | – |
| September | 90.0% | – | – |
| October | 74.4% | – | in progress |
| November | 79.2% | – | – |
| December | 72.2% | – | – |
| Year-to-date average (Jan–Jul) | 79.2% | 73.6% | ▼ 7.0% |
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 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 1 | ▼ 66.7% |
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% 644
- Cancelled 0.6% 4
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IND ATL Indianapolis International Airport – Hartsfield Jackson Atlanta International Airport | 696 | 13.6 min | 81.9% | 73 |
| ATL BNA Hartsfield Jackson Atlanta International Airport – Nashville International Airport | 344 | 8.9 min | 82.1% | 67 |
| SEA HOU Seattle–Tacoma International Airport – William P. Hobby Airport | 3,046 | 35.2 min | 51.7% | 60 |
| AUS CMH Austin Bergstrom International Airport – John Glenn Columbus International Airport | 1,726 | 12.6 min | 71.4% | 49 |
| TPA BHM Tampa International Airport – Birmingham-Shuttlesworth International Airport | 740 | 5.8 min | 81.3% | 32 |
| MCI LAS Kansas City International Airport – Harry Reid International Airport | 1,829 | 18.2 min | 71.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 27 | 27 | 92.6% | 0 |
| November 2024 | 28 | 28 | 96.4% | 0 |
| December 2024 | 29 | 29 | 82.8% | 0 |
| January 2025 | 31 | 29 | 82.8% | 2 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 15 | 15 | 100.0% | 0 |
| April 2025 | 35 | 35 | 91.4% | 0 |
| May 2025 | 45 | 44 | 86.4% | 1 |
| June 2025 | 31 | 31 | 51.6% | 0 |
| July 2025 | 30 | 30 | 63.3% | 0 |
| August 2025 | 30 | 30 | 73.3% | 0 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 39 | 39 | 74.4% | 0 |
| November 2025 | 24 | 24 | 79.2% | 0 |
| December 2025 | 18 | 18 | 72.2% | 0 |
| January 2026 | 28 | 28 | 82.1% | 0 |
| February 2026 | 20 | 20 | 90.0% | 0 |
| March 2026 | 30 | 30 | 80.0% | 0 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 31 | 31 | 71.0% | 0 |
| June 2026 | 34 | 34 | 52.9% | 0 |
| July 2026 | 35 | 34 | 55.9% | 1 |