WN397
WN397 (Southwest Airlines) is a multi-stop service on 35 routes, busiest San Antonio to Atlanta. Of 660 departures recorded from October 2024 to July 2026, 81.8% left on time, according to the US BTS.
- On-time departures81.8%of 660 flights
- Average delay6.1 min
- July 202648▲ 60.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number35
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 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 9 | 31 | ▲ 244.4% |
| April | 24 | 27 | ▲ 12.5% |
| May | 30 | 27 | ▼ 10.0% |
| June | 30 | 45 | ▲ 50.0% |
| July | 30 | 48 | ▲ 60.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 182 | 237 | ▲ 30.2% |
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 | 96.6% | 90.0% | ▼ 6.8% |
| February | 96.4% | 64.3% | ▼ 33.3% |
| March | 100.0% | 38.7% | ▼ 61.3% |
| April | 87.5% | 74.1% | ▼ 15.3% |
| May | 93.3% | 88.5% | ▼ 5.2% |
| June | 58.6% | 68.9% | ▲ 17.5% |
| July | 43.3% | 78.7% | ▲ 81.7% |
| August | 87.1% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 93.3% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 82.3% | 71.9% | ▼ 12.6% |
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 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 3 | 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 99.1% 654
- Cancelled 0.9% 6
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAT ATL San Antonio International Airport – Hartsfield Jackson Atlanta International Airport | 1,405 | -0.2 min | 96.8% | 97 |
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 0.8 min | 96.8% | 64 |
| PDX PHX Portland International Airport – Phoenix Sky Harbor International Airport | 1,625 | 25.9 min | 47.5% | 60 |
| PIT LAS Pittsburgh International Airport – Harry Reid International Airport | 3,066 | 0.3 min | 98.3% | 58 |
| AUS SJC Austin Bergstrom International Airport – Mineta San Jose International Airport | 2,372 | 5.0 min | 72.7% | 55 |
| SJC SNA Mineta San Jose International Airport – John Wayne Orange County International Airport | 550 | 8.1 min | 77.6% | 50 |
| IND BWI Indianapolis International Airport – Baltimore/Washington International Thurgood Marshall Airport | 828 | -2.3 min | 95.2% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 69.2% | 0 |
| November 2024 | 30 | 30 | 96.7% | 0 |
| December 2024 | 32 | 32 | 93.8% | 0 |
| January 2025 | 31 | 29 | 96.6% | 2 |
| February 2025 | 28 | 28 | 96.4% | 0 |
| March 2025 | 9 | 9 | 100.0% | 0 |
| April 2025 | 24 | 24 | 87.5% | 0 |
| May 2025 | 30 | 30 | 93.3% | 0 |
| June 2025 | 30 | 29 | 58.6% | 1 |
| July 2025 | 30 | 30 | 43.3% | 0 |
| August 2025 | 31 | 31 | 87.1% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 30 | 30 | 93.3% | 0 |
| December 2025 | 31 | 31 | 100.0% | 0 |
| January 2026 | 31 | 30 | 90.0% | 1 |
| February 2026 | 28 | 28 | 64.3% | 0 |
| March 2026 | 31 | 31 | 38.7% | 0 |
| April 2026 | 27 | 27 | 74.1% | 0 |
| May 2026 | 27 | 26 | 88.5% | 1 |
| June 2026 | 45 | 45 | 68.9% | 0 |
| July 2026 | 48 | 47 | 78.7% | 1 |