WN3644
WN3644 (Southwest Airlines) is a multi-stop service on 34 routes, busiest Ontario to Oakland. Of 502 departures recorded from October 2024 to July 2026, 70.8% left on time, according to the US BTS.
- On-time departures70.8%of 502 flights
- Average delay14.7 min
- July 202626▲ 23.8%vs July 2025
- Cancelled0.4%
- Legs flown under this number34
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 | 9 | 3 | ▼ 66.7% |
| February | 8 | 7 | ▼ 12.5% |
| March | 27 | 17 | ▼ 37.0% |
| April | 30 | 38 | ▲ 26.7% |
| May | 34 | 44 | ▲ 29.4% |
| June | 24 | 27 | ▲ 12.5% |
| July | 21 | 26 | ▲ 23.8% |
| August | 39 | – | – |
| September | 39 | – | – |
| October | 29 | – | in progress |
| November | 7 | – | – |
| December | 13 | – | – |
| Year to date (Jan–Jul) | 153 | 162 | ▲ 5.9% |
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 | 77.8% | 0.0% | ▼ 100.0% |
| February | 87.5% | 42.9% | ▼ 51.0% |
| March | 70.4% | 70.6% | ▲ 0.3% |
| April | 73.3% | 68.4% | ▼ 6.7% |
| May | 73.5% | 34.1% | ▼ 53.6% |
| June | 83.3% | 11.5% | ▼ 86.2% |
| July | 90.5% | 23.1% | ▼ 74.5% |
| August | 94.9% | – | – |
| September | 100.0% | – | – |
| October | 82.8% | – | in progress |
| November | 71.4% | – | – |
| December | 69.2% | – | – |
| Year-to-date average (Jan–Jul) | 79.5% | 35.8% | ▼ 55.0% |
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 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| 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 99.6% 500
- Cancelled 0.4% 2
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 |
|---|---|---|---|---|
| PNS DEN Pensacola International Airport – Denver International Airport | 1,896 | 34.1 min | 46.6% | 58 |
| ONT OAK Ontario International Airport – Oakland San Francisco Bay Airport | 582 | 8.7 min | 75.9% | 58 |
| OAK PHX Oakland San Francisco Bay Airport – Phoenix Sky Harbor International Airport | 1,039 | 7.5 min | 84.4% | 45 |
| SFO LAS San Francisco International Airport – Harry Reid International Airport | 665 | 50.9 min | 14.3% | 42 |
| PHX AUS Phoenix Sky Harbor International Airport – Austin Bergstrom International Airport | 1,401 | -3.6 min | 100.0% | 42 |
| DEN SAT Denver International Airport – San Antonio International Airport | 1,280 | 11.0 min | 66.7% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 38 | 38 | 97.4% | 0 |
| November 2024 | 10 | 10 | 100.0% | 0 |
| December 2024 | 12 | 11 | 81.8% | 1 |
| January 2025 | 9 | 9 | 77.8% | 0 |
| February 2025 | 8 | 8 | 87.5% | 0 |
| March 2025 | 27 | 27 | 70.4% | 0 |
| April 2025 | 30 | 30 | 73.3% | 0 |
| May 2025 | 34 | 34 | 73.5% | 0 |
| June 2025 | 24 | 24 | 83.3% | 0 |
| July 2025 | 21 | 21 | 90.5% | 0 |
| August 2025 | 39 | 39 | 94.9% | 0 |
| September 2025 | 39 | 39 | 100.0% | 0 |
| October 2025 | 29 | 29 | 82.8% | 0 |
| November 2025 | 7 | 7 | 71.4% | 0 |
| December 2025 | 13 | 13 | 69.2% | 0 |
| January 2026 | 3 | 3 | 0.0% | 0 |
| February 2026 | 7 | 7 | 42.9% | 0 |
| March 2026 | 17 | 17 | 70.6% | 0 |
| April 2026 | 38 | 38 | 68.4% | 0 |
| May 2026 | 44 | 44 | 34.1% | 0 |
| June 2026 | 27 | 26 | 11.5% | 1 |
| July 2026 | 26 | 26 | 23.1% | 0 |