WN823
WN823 (Southwest Airlines) is a multi-stop service on 43 routes, busiest Seattle to San Jose. Of 833 departures recorded from October 2024 to July 2026, 77.1% left on time, according to the US BTS.
- On-time departures77.1%of 833 flights
- Average delay10.7 min
- July 202657▲ 62.9%vs July 2025
- Cancelled0.4%
- 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 | 56 | 31 | ▼ 44.6% |
| February | 36 | 31 | ▼ 13.9% |
| March | 33 | 19 | ▼ 42.4% |
| April | 39 | 27 | ▼ 30.8% |
| May | 45 | 31 | ▼ 31.1% |
| June | 35 | 54 | ▲ 54.3% |
| July | 35 | 57 | ▲ 62.9% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 279 | 250 | ▼ 10.4% |
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 | 72.7% | 90.0% | ▲ 23.7% |
| February | 80.6% | 77.4% | ▼ 3.9% |
| March | 100.0% | 63.2% | ▼ 36.8% |
| April | 97.4% | 51.9% | ▼ 46.8% |
| May | 88.9% | 29.0% | ▼ 67.3% |
| June | 74.3% | 61.1% | ▼ 17.7% |
| July | 45.7% | 66.1% | ▲ 44.5% |
| August | 65.6% | – | – |
| September | 80.0% | – | – |
| October | 67.7% | – | in progress |
| November | 100.0% | – | – |
| December | 96.8% | – | – |
| Year-to-date average (Jan–Jul) | 79.9% | 62.7% | ▼ 21.6% |
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 | 1 | 1 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| 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 99.6% 830
- Cancelled 0.4% 3
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SEA SJC Seattle–Tacoma International Airport – Mineta San Jose International Airport | 1,122 | 8.1 min | 83.8% | 74 |
| ELP AUS El Paso International Airport – Austin Bergstrom International Airport | 849 | -3.3 min | 98.4% | 64 |
| ORD BNA Chicago O'Hare International Airport – Nashville International Airport | 660 | 12.8 min | 74.1% | 58 |
| BNA TPA Nashville International Airport – Tampa International Airport | 987 | 41.2 min | 37.9% | 58 |
| SFO LAX San Francisco International Airport – Los Angeles International Airport | 543 | -2.2 min | 95.2% | 42 |
| AUS STL Austin Bergstrom International Airport – St. Louis Lambert International Airport | 1,161 | 26.1 min | 55.6% | 36 |
| PVD TPA Rhode Island T. F. Green International Airport – Tampa International Airport | 1,831 | 19.7 min | 61.8% | 34 |
| HOU BWI William P. Hobby Airport – Baltimore/Washington International Thurgood Marshall Airport | 2,003 | -1.7 min | 100.0% | 33 |
| BUR SMF Hollywood Burbank/Bob Hope Airport – Sacramento International Airport | 577 | 17.3 min | 67.7% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 44 | 44 | 97.7% | 0 |
| November 2024 | 62 | 62 | 95.2% | 0 |
| December 2024 | 44 | 44 | 77.3% | 0 |
| January 2025 | 56 | 55 | 72.7% | 1 |
| February 2025 | 36 | 36 | 80.6% | 0 |
| March 2025 | 33 | 33 | 100.0% | 0 |
| April 2025 | 39 | 39 | 97.4% | 0 |
| May 2025 | 45 | 45 | 88.9% | 0 |
| June 2025 | 35 | 35 | 74.3% | 0 |
| July 2025 | 35 | 35 | 45.7% | 0 |
| August 2025 | 32 | 32 | 65.6% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 31 | 31 | 67.7% | 0 |
| November 2025 | 30 | 30 | 100.0% | 0 |
| December 2025 | 31 | 31 | 96.8% | 0 |
| January 2026 | 31 | 30 | 90.0% | 1 |
| February 2026 | 31 | 31 | 77.4% | 0 |
| March 2026 | 19 | 19 | 63.2% | 0 |
| April 2026 | 27 | 27 | 51.9% | 0 |
| May 2026 | 31 | 31 | 29.0% | 0 |
| June 2026 | 54 | 54 | 61.1% | 0 |
| July 2026 | 57 | 56 | 66.1% | 1 |