WN671
WN671 (Southwest Airlines) is a multi-stop service on 43 routes, busiest Chicago to Austin. Of 833 departures recorded from October 2024 to July 2026, 76.2% left on time, according to the US BTS.
- On-time departures76.2%of 833 flights
- Average delay12.6 min
- July 202634▲ 9.7%vs July 2025
- Cancelled1.0%
- Legs flown under this number43
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 75 | 26 | ▼ 65.3% |
| February | 45 | 38 | ▼ 15.6% |
| March | 45 | 39 | ▼ 13.3% |
| April | 33 | 31 | ▼ 6.1% |
| May | 31 | 31 | 0.0% |
| June | 30 | 34 | ▲ 13.3% |
| July | 31 | 34 | ▲ 9.7% |
| August | 23 | – | – |
| September | 21 | – | – |
| October | 76 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 290 | 233 | ▼ 19.7% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 84.0% | 88.0% | ▲ 4.8% |
| February | 86.7% | 92.1% | ▲ 6.3% |
| March | 100.0% | 65.8% | ▼ 34.2% |
| April | 87.9% | 87.1% | ▼ 0.9% |
| May | 67.7% | 83.9% | ▲ 23.8% |
| June | 80.0% | 41.2% | ▼ 48.5% |
| July | 33.3% | 23.5% | ▼ 29.4% |
| August | 87.0% | – | – |
| September | 85.7% | – | – |
| October | 68.9% | – | in progress |
| November | 72.4% | – | – |
| December | 75.9% | – | – |
| Year-to-date average (Jan–Jul) | 77.1% | 68.8% | ▼ 10.8% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 1 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 100.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.0% 825
- Cancelled 1.0% 8
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD AUS Chicago O'Hare International Airport – Austin Bergstrom International Airport | 1,574 | 26.4 min | 51.7% | 61 |
| LAX HOU Los Angeles International Airport – William P. Hobby Airport | 2,233 | 14.7 min | 75.9% | 58 |
| BNA LGA Nashville International Airport – LaGuardia Airport | 1,228 | 7.5 min | 84.5% | 58 |
| BNA SDF Nashville International Airport – Louisville Muhammad Ali International Airport | 242 | 46.3 min | 26.8% | 56 |
| SAN AUS San Diego International Airport – Austin Bergstrom International Airport | 1,871 | 8.5 min | 90.9% | 44 |
| PHX BUR Phoenix Sky Harbor International Airport – Hollywood Burbank/Bob Hope Airport | 593 | 9.8 min | 79.0% | 40 |
| ONT OAK Ontario International Airport – Oakland San Francisco Bay Airport | 582 | -0.4 min | 92.3% | 39 |
| PHX RNO Phoenix Sky Harbor International Airport – Reno Tahoe International Airport | 967 | 1.0 min | 91.7% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 60 | 60 | 88.3% | 0 |
| December 2024 | 49 | 49 | 75.5% | 0 |
| January 2025 | 75 | 75 | 84.0% | 0 |
| February 2025 | 45 | 45 | 86.7% | 0 |
| March 2025 | 45 | 45 | 100.0% | 0 |
| April 2025 | 33 | 33 | 87.9% | 0 |
| May 2025 | 31 | 31 | 67.7% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 31 | 30 | 33.3% | 1 |
| August 2025 | 23 | 23 | 87.0% | 0 |
| September 2025 | 21 | 21 | 85.7% | 0 |
| October 2025 | 76 | 74 | 68.9% | 2 |
| November 2025 | 30 | 29 | 72.4% | 1 |
| December 2025 | 31 | 29 | 75.9% | 2 |
| January 2026 | 26 | 25 | 88.0% | 1 |
| February 2026 | 38 | 38 | 92.1% | 0 |
| March 2026 | 39 | 38 | 65.8% | 1 |
| April 2026 | 31 | 31 | 87.1% | 0 |
| May 2026 | 31 | 31 | 83.9% | 0 |
| June 2026 | 34 | 34 | 41.2% | 0 |
| July 2026 | 34 | 34 | 23.5% | 0 |