WN3828
WN3828 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Denver to Phoenix. Of 423 departures recorded from October 2024 to July 2026, 76.5% left on time, according to the US BTS.
- On-time departures76.5%of 423 flights
- Average delay11.8 min
- July 202618
- Cancelled0.5%
- Legs flown under this number18
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 3 | ▼ 90.3% |
| February | 20 | – | – |
| March | 30 | 27 | ▼ 10.0% |
| April | 13 | 56 | ▲ 330.8% |
| May | 8 | 56 | ▲ 600.0% |
| June | 2 | 24 | ▲ 1,100.0% |
| July | – | 18 | – |
| August | 3 | – | – |
| September | 4 | – | – |
| October | 37 | – | in progress |
| November | 6 | – | – |
| December | 11 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 63.3% | 66.7% | ▲ 5.3% |
| February | 50.0% | – | – |
| March | 76.7% | 23.1% | ▼ 69.9% |
| April | 100.0% | 87.5% | ▼ 12.5% |
| May | 62.5% | 94.6% | ▲ 51.4% |
| June | 0.0% | 66.7% | – |
| July | – | 50.0% | – |
| August | 66.7% | – | – |
| September | 100.0% | – | – |
| October | 89.2% | – | in progress |
| November | 83.3% | – | – |
| December | 100.0% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | – | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 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 99.5% 421
- Cancelled 0.5% 2
Share of all recorded flights in the period, all legs. · Oct 14, 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 |
|---|---|---|---|---|
| DEN PHX Denver International Airport – Phoenix Sky Harbor International Airport | 968 | 10.6 min | 71.6% | 103 |
| SJC LAX Mineta San Jose International Airport – Los Angeles International Airport | 496 | -3.0 min | 96.5% | 57 |
| SMF SLC Sacramento International Airport – Salt Lake City International Airport | 854 | 37.2 min | 50.0% | 34 |
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 13.5 min | 78.8% | 33 |
| MCO ALB Orlando International Airport – Albany International Airport | 1,729 | 40.7 min | 28.1% | 33 |
| DEN LAX Denver International Airport – Los Angeles International Airport | 1,385 | 0.8 min | 93.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 26 | 26 | 76.9% | 0 |
| December 2024 | 28 | 28 | 82.1% | 0 |
| January 2025 | 31 | 30 | 63.3% | 1 |
| February 2025 | 20 | 20 | 50.0% | 0 |
| March 2025 | 30 | 30 | 76.7% | 0 |
| April 2025 | 13 | 13 | 100.0% | 0 |
| May 2025 | 8 | 8 | 62.5% | 0 |
| June 2025 | 2 | 2 | 0.0% | 0 |
| August 2025 | 3 | 3 | 66.7% | 0 |
| September 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 37 | 37 | 89.2% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 11 | 11 | 100.0% | 0 |
| January 2026 | 3 | 3 | 66.7% | 0 |
| March 2026 | 27 | 26 | 23.1% | 1 |
| April 2026 | 56 | 56 | 87.5% | 0 |
| May 2026 | 56 | 56 | 94.6% | 0 |
| June 2026 | 24 | 24 | 66.7% | 0 |
| July 2026 | 18 | 18 | 50.0% | 0 |