WN3674
WN3674 (Southwest Airlines) is a multi-stop service on 20 routes, busiest Ontario to San Jose. Of 353 departures recorded from October 2024 to July 2026, 67.8% left on time, according to the US BTS.
- On-time departures67.8%of 353 flights
- Average delay17.3 min
- July 202621▲ 320.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number20
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 19 | 22 | ▲ 15.8% |
| February | 17 | 27 | ▲ 58.8% |
| March | 23 | 5 | ▼ 78.3% |
| April | 28 | 24 | ▼ 14.3% |
| May | 31 | 31 | 0.0% |
| June | 8 | 23 | ▲ 187.5% |
| July | 5 | 21 | ▲ 320.0% |
| August | 22 | – | – |
| September | 25 | – | – |
| October | 9 | – | in progress |
| November | 2 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 131 | 153 | ▲ 16.8% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 94.7% | 77.3% | ▼ 18.4% |
| February | 88.2% | 77.8% | ▼ 11.9% |
| March | 65.2% | 80.0% | ▲ 22.7% |
| April | 82.1% | 66.7% | ▼ 18.8% |
| May | 77.4% | 64.5% | ▼ 16.7% |
| June | 37.5% | 30.4% | ▼ 18.9% |
| July | 50.0% | 38.1% | ▼ 23.8% |
| August | 57.1% | – | – |
| September | 76.0% | – | – |
| October | 100.0% | – | in progress |
| November | 0.0% | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Jul) | 70.8% | 62.1% | ▼ 12.2% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
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 99.4% 351
- Cancelled 0.6% 2
Share of all recorded flights in the period, all legs. · Oct 31, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ONT SJC Ontario International Airport – Mineta San Jose International Airport | 536 | 12.7 min | 65.5% | 58 |
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 13.3 min | 79.3% | 53 |
| PHX HOU Phoenix Sky Harbor International Airport – William P. Hobby Airport | 1,638 | 12.1 min | 81.0% | 42 |
| DAL PHX Dallas Love Field – Phoenix Sky Harbor International Airport | 1,412 | 46.3 min | 31.7% | 41 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 1 | 1 | 100.0% | 0 |
| November 2024 | 2 | 2 | 0.0% | 0 |
| December 2024 | 8 | 8 | 50.0% | 0 |
| January 2025 | 19 | 19 | 94.7% | 0 |
| February 2025 | 17 | 17 | 88.2% | 0 |
| March 2025 | 23 | 23 | 65.2% | 0 |
| April 2025 | 28 | 28 | 82.1% | 0 |
| May 2025 | 31 | 31 | 77.4% | 0 |
| June 2025 | 8 | 8 | 37.5% | 0 |
| July 2025 | 5 | 4 | 50.0% | 1 |
| August 2025 | 22 | 21 | 57.1% | 1 |
| September 2025 | 25 | 25 | 76.0% | 0 |
| October 2025 | 9 | 9 | 100.0% | 0 |
| November 2025 | 2 | 2 | 0.0% | 0 |
| January 2026 | 22 | 22 | 77.3% | 0 |
| February 2026 | 27 | 27 | 77.8% | 0 |
| March 2026 | 5 | 5 | 80.0% | 0 |
| April 2026 | 24 | 24 | 66.7% | 0 |
| May 2026 | 31 | 31 | 64.5% | 0 |
| June 2026 | 23 | 23 | 30.4% | 0 |
| July 2026 | 21 | 21 | 38.1% | 0 |