WN3819
WN3819 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Denver to San Antonio. Of 516 departures recorded from October 2024 to July 2026, 79.1% left on time, according to the US BTS.
- On-time departures79.1%of 516 flights
- Average delay11.0 min
- July 20264▼ 87.1%vs July 2025
- Cancelled1.0%
- Legs flown under this number26
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 | – | – |
| February | 28 | 10 | ▼ 64.3% |
| March | 41 | 42 | ▲ 2.4% |
| April | 36 | 32 | ▼ 11.1% |
| May | 36 | 31 | ▼ 13.9% |
| June | 30 | 7 | ▼ 76.7% |
| July | 31 | 4 | ▼ 87.1% |
| August | 4 | – | – |
| September | – | – | – |
| October | 70 | – | in progress |
| November | 4 | – | – |
| December | 3 | – | – |
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 | 69.0% | – | – |
| February | 60.7% | 100.0% | ▲ 64.7% |
| March | 70.0% | 80.5% | ▲ 15.0% |
| April | 77.1% | 71.9% | ▼ 6.8% |
| May | 66.7% | 67.7% | ▲ 1.6% |
| June | 90.0% | 85.7% | ▼ 4.8% |
| July | 100.0% | 100.0% | 0.0% |
| August | 75.0% | – | – |
| September | – | – | – |
| October | 85.7% | – | in progress |
| November | 75.0% | – | – |
| December | 66.7% | – | – |
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 | 2 | – | – |
| February | 0 | 0 | – |
| March | 1 | 1 | 0.0% |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| 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 99.0% 511
- Cancelled 1.0% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 25, 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 SAT Denver International Airport – San Antonio International Airport | 1,280 | 11.8 min | 72.0% | 76 |
| MDW RDU Chicago Midway International Airport – Raleigh-Durham International Airport | 1,016 | 2.0 min | 93.4% | 61 |
| PHX MCO Phoenix Sky Harbor International Airport – Orlando International Airport | 2,969 | 28.9 min | 69.0% | 58 |
| SAT MDW San Antonio International Airport – Chicago Midway International Airport | 1,668 | 19.4 min | 68.0% | 50 |
| MSP DEN Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Denver International Airport | 1,092 | 8.2 min | 90.6% | 33 |
| TPA PIT Tampa International Airport – Pittsburgh International Airport | 1,408 | -0.6 min | 90.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 27 | 27 | 92.6% | 0 |
| December 2024 | 29 | 29 | 82.8% | 0 |
| January 2025 | 31 | 29 | 69.0% | 2 |
| February 2025 | 28 | 28 | 60.7% | 0 |
| March 2025 | 41 | 40 | 70.0% | 1 |
| April 2025 | 36 | 35 | 77.1% | 1 |
| May 2025 | 36 | 36 | 66.7% | 0 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 31 | 31 | 100.0% | 0 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| October 2025 | 70 | 70 | 85.7% | 0 |
| November 2025 | 4 | 4 | 75.0% | 0 |
| December 2025 | 3 | 3 | 66.7% | 0 |
| February 2026 | 10 | 10 | 100.0% | 0 |
| March 2026 | 42 | 41 | 80.5% | 1 |
| April 2026 | 32 | 32 | 71.9% | 0 |
| May 2026 | 31 | 31 | 67.7% | 0 |
| June 2026 | 7 | 7 | 85.7% | 0 |
| July 2026 | 4 | 4 | 100.0% | 0 |