WN1978
WN1978 (Southwest Airlines) is a multi-stop service on 36 routes, busiest San Jose to Phoenix. Of 664 departures recorded from October 2024 to July 2026, 70.7% left on time, according to the US BTS.
- On-time departures70.7%of 664 flights
- Average delay16.0 min
- July 202630▼ 55.2%vs July 2025
- Cancelled0.2%
- 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 | 13 | 31 | ▲ 138.5% |
| February | 7 | 28 | ▲ 300.0% |
| March | 59 | 19 | ▼ 67.8% |
| April | 30 | 3 | ▼ 90.0% |
| May | 23 | 2 | ▼ 91.3% |
| June | 64 | 26 | ▼ 59.4% |
| July | 67 | 30 | ▼ 55.2% |
| August | 37 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 45 | – | – |
| December | 36 | – | – |
| Year to date (Jan–Jul) | 263 | 139 | ▼ 47.1% |
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 | 23.1% | 83.9% | ▲ 263.4% |
| February | 71.4% | 71.4% | 0.0% |
| March | 54.2% | 72.2% | ▲ 33.1% |
| April | 73.3% | 66.7% | ▼ 9.1% |
| May | 82.6% | 0.0% | ▼ 100.0% |
| June | 79.7% | 34.6% | ▼ 56.6% |
| July | 79.1% | 36.7% | ▼ 53.6% |
| August | 62.2% | – | – |
| September | 63.3% | – | – |
| October | 100.0% | – | in progress |
| November | 80.0% | – | – |
| December | 83.3% | – | – |
| Year-to-date average (Jan–Jul) | 66.2% | 52.2% | ▼ 21.1% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 1 |
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 99.8% 663
- Cancelled 0.2% 1
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 |
|---|---|---|---|---|
| SJC PHX Mineta San Jose International Airport – Phoenix Sky Harbor International Airport | 999 | 8.9 min | 79.0% | 62 |
| ELP DAL El Paso International Airport – Dallas Love Field | 902 | 0.0 min | 95.1% | 61 |
| IND ATL Indianapolis International Airport – Hartsfield Jackson Atlanta International Airport | 696 | 6.8 min | 77.6% | 58 |
| PHL DEN Philadelphia International Airport – Denver International Airport | 2,501 | 28.5 min | 57.9% | 57 |
| BNA SAN Nashville International Airport – San Diego International Airport | 2,812 | 33.1 min | 34.6% | 55 |
| SBA LAS Santa Barbara Municipal Airport – Harry Reid International Airport | 464 | -4.1 min | 100.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 80.8% | 0 |
| November 2024 | 25 | 25 | 88.0% | 0 |
| December 2024 | 32 | 32 | 65.6% | 0 |
| January 2025 | 13 | 13 | 23.1% | 0 |
| February 2025 | 7 | 7 | 71.4% | 0 |
| March 2025 | 59 | 59 | 54.2% | 0 |
| April 2025 | 30 | 30 | 73.3% | 0 |
| May 2025 | 23 | 23 | 82.6% | 0 |
| June 2025 | 64 | 64 | 79.7% | 0 |
| July 2025 | 67 | 67 | 79.1% | 0 |
| August 2025 | 37 | 37 | 62.2% | 0 |
| September 2025 | 30 | 30 | 63.3% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 45 | 45 | 80.0% | 0 |
| December 2025 | 36 | 36 | 83.3% | 0 |
| January 2026 | 31 | 31 | 83.9% | 0 |
| February 2026 | 28 | 28 | 71.4% | 0 |
| March 2026 | 19 | 18 | 72.2% | 1 |
| April 2026 | 3 | 3 | 66.7% | 0 |
| May 2026 | 2 | 2 | 0.0% | 0 |
| June 2026 | 26 | 26 | 34.6% | 0 |
| July 2026 | 30 | 30 | 36.7% | 0 |