WN843
WN843 (Southwest Airlines) is a multi-stop service on 44 routes, busiest Phoenix to San Jose. Of 793 departures recorded from October 2024 to July 2026, 76.0% left on time, according to the US BTS.
- On-time departures76.0%of 793 flights
- Average delay12.0 min
- July 202635▲ 12.9%vs July 2025
- Cancelled1.1%
- Legs flown under this number44
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 | 39 | 33 | ▼ 15.4% |
| February | 28 | 28 | 0.0% |
| March | 27 | 37 | ▲ 37.0% |
| April | 22 | 46 | ▲ 109.1% |
| May | 22 | 46 | ▲ 109.1% |
| June | 29 | 38 | ▲ 31.0% |
| July | 31 | 35 | ▲ 12.9% |
| August | 36 | – | – |
| September | 35 | – | – |
| October | 24 | – | in progress |
| November | 44 | – | – |
| December | 37 | – | – |
| Year to date (Jan–Jul) | 198 | 263 | ▲ 32.8% |
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 | 89.5% | 96.8% | ▲ 8.2% |
| February | 78.6% | 70.4% | ▼ 10.4% |
| March | 59.3% | 75.7% | ▲ 27.7% |
| April | 86.4% | 100.0% | ▲ 15.8% |
| May | 81.8% | 91.3% | ▲ 11.6% |
| June | 24.1% | 60.5% | ▲ 150.7% |
| July | 45.2% | 62.9% | ▲ 39.2% |
| August | 79.4% | – | – |
| September | 82.9% | – | – |
| October | 91.7% | – | in progress |
| November | 72.1% | – | – |
| December | 78.4% | – | – |
| Year-to-date average (Jan–Jul) | 66.4% | 79.6% | ▲ 20.0% |
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 | 2 | ▲ 100.0% |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 4 | ▲ 300.0% |
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 98.9% 784
- Cancelled 1.1% 9
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 |
|---|---|---|---|---|
| PHX SJC Phoenix Sky Harbor International Airport – Mineta San Jose International Airport | 999 | 15.1 min | 69.4% | 62 |
| DEN MSY Denver International Airport – Louis Armstrong New Orleans International Airport | 1,708 | 46.3 min | 34.4% | 61 |
| BWI BNA Baltimore/Washington International Thurgood Marshall Airport – Nashville International Airport | 944 | 3.8 min | 80.0% | 58 |
| PHX DAL Phoenix Sky Harbor International Airport – Dallas Love Field | 1,412 | -0.1 min | 98.2% | 57 |
| BWI CMH Baltimore/Washington International Thurgood Marshall Airport – John Glenn Columbus International Airport | 541 | 8.1 min | 79.6% | 50 |
| AMA DAL Rick Husband Amarillo International Airport – Dallas Love Field | 520 | 8.2 min | 84.8% | 46 |
| DEN BZN Denver International Airport – Bozeman Yellowstone International Airport | 844 | 7.8 min | 80.5% | 41 |
| BUR RNO Hollywood Burbank/Bob Hope Airport – Reno Tahoe International Airport | 602 | 20.1 min | 66.7% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 75.0% | 0 |
| November 2024 | 64 | 64 | 79.7% | 0 |
| December 2024 | 72 | 71 | 74.7% | 1 |
| January 2025 | 39 | 38 | 89.5% | 1 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 27 | 27 | 59.3% | 0 |
| April 2025 | 22 | 22 | 86.4% | 0 |
| May 2025 | 22 | 22 | 81.8% | 0 |
| June 2025 | 29 | 29 | 24.1% | 0 |
| July 2025 | 31 | 31 | 45.2% | 0 |
| August 2025 | 36 | 34 | 79.4% | 2 |
| September 2025 | 35 | 35 | 82.9% | 0 |
| October 2025 | 24 | 24 | 91.7% | 0 |
| November 2025 | 44 | 43 | 72.1% | 1 |
| December 2025 | 37 | 37 | 78.4% | 0 |
| January 2026 | 33 | 31 | 96.8% | 2 |
| February 2026 | 28 | 27 | 70.4% | 1 |
| March 2026 | 37 | 37 | 75.7% | 0 |
| April 2026 | 46 | 45 | 100.0% | 1 |
| May 2026 | 46 | 46 | 91.3% | 0 |
| June 2026 | 38 | 38 | 60.5% | 0 |
| July 2026 | 35 | 35 | 62.9% | 0 |