WN3545
WN3545 (Southwest Airlines) is a multi-stop service on 20 routes, busiest San Diego to Denver. Of 373 departures recorded from October 2024 to July 2026, 74.7% left on time, according to the US BTS.
- On-time departures74.7%of 373 flights
- Average delay14.6 min
- July 202627▼ 12.9%vs July 2025
- Cancelled0.3%
- Legs flown under this number20
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 | 2 | 7 | ▲ 250.0% |
| February | 2 | 3 | ▲ 50.0% |
| March | 9 | 14 | ▲ 55.6% |
| April | 25 | 28 | ▲ 12.0% |
| May | 23 | 30 | ▲ 30.4% |
| June | 28 | 30 | ▲ 7.1% |
| July | 31 | 27 | ▼ 12.9% |
| August | 15 | – | – |
| September | 12 | – | – |
| October | 4 | – | in progress |
| November | 31 | – | – |
| December | 35 | – | – |
| Year to date (Jan–Jul) | 120 | 139 | ▲ 15.8% |
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 | 100.0% | 85.7% | ▼ 14.3% |
| February | 0.0% | 66.7% | – |
| March | 44.4% | 71.4% | ▲ 60.7% |
| April | 80.0% | 89.3% | ▲ 11.6% |
| May | 56.5% | 90.0% | ▲ 59.2% |
| June | 60.7% | 80.0% | ▲ 31.8% |
| July | 71.0% | 70.4% | ▼ 0.8% |
| August | 66.7% | – | – |
| September | 83.3% | – | – |
| October | 100.0% | – | in progress |
| November | 83.9% | – | – |
| December | 85.7% | – | – |
| Year-to-date average (Jan–Jul) | 58.9% | 79.1% | ▲ 34.1% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| 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) | 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 99.7% 372
- Cancelled 0.3% 1
Share of all recorded flights in the period, all legs. · Oct 15, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAN DEN San Diego International Airport – Denver International Airport | 1,371 | 3.5 min | 87.7% | 57 |
| STL RDU St. Louis Lambert International Airport – Raleigh-Durham International Airport | 1,072 | 22.5 min | 63.5% | 52 |
| SAT SAN San Antonio International Airport – San Diego International Airport | 1,814 | 11.1 min | 78.0% | 50 |
| DEN SLC Denver International Airport – Salt Lake City International Airport | 628 | 19.6 min | 70.8% | 48 |
| SMF MCI Sacramento International Airport – Kansas City International Airport | 2,315 | 7.1 min | 85.7% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 16.7% | 0 |
| November 2024 | 2 | 2 | 100.0% | 0 |
| December 2024 | 9 | 9 | 55.6% | 0 |
| January 2025 | 2 | 1 | 100.0% | 1 |
| February 2025 | 2 | 2 | 0.0% | 0 |
| March 2025 | 9 | 9 | 44.4% | 0 |
| April 2025 | 25 | 25 | 80.0% | 0 |
| May 2025 | 23 | 23 | 56.5% | 0 |
| June 2025 | 28 | 28 | 60.7% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 15 | 15 | 66.7% | 0 |
| September 2025 | 12 | 12 | 83.3% | 0 |
| October 2025 | 4 | 4 | 100.0% | 0 |
| November 2025 | 31 | 31 | 83.9% | 0 |
| December 2025 | 35 | 35 | 85.7% | 0 |
| January 2026 | 7 | 7 | 85.7% | 0 |
| February 2026 | 3 | 3 | 66.7% | 0 |
| March 2026 | 14 | 14 | 71.4% | 0 |
| April 2026 | 28 | 28 | 89.3% | 0 |
| May 2026 | 30 | 30 | 90.0% | 0 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 27 | 27 | 70.4% | 0 |