WN3671
WN3671 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Denver to Hayden. Of 581 departures recorded from October 2024 to July 2026, 76.6% left on time, according to the US BTS.
- On-time departures76.6%of 581 flights
- Average delay11.9 min
- July 202632▼ 8.6%vs July 2025
- Cancelled0.7%
- Legs flown under this number29
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 | 26 | 39 | ▲ 50.0% |
| February | 24 | 36 | ▲ 50.0% |
| March | 34 | 6 | ▼ 82.4% |
| April | 23 | 35 | ▲ 52.2% |
| May | 23 | 43 | ▲ 87.0% |
| June | 32 | 24 | ▼ 25.0% |
| July | 35 | 32 | ▼ 8.6% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 52 | – | in progress |
| November | 6 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 197 | 215 | ▲ 9.1% |
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 | 84.6% | 82.1% | ▼ 3.0% |
| February | 91.7% | 80.6% | ▼ 12.1% |
| March | 76.5% | 100.0% | ▲ 30.8% |
| April | 73.9% | 77.1% | ▲ 4.4% |
| May | 73.9% | 74.4% | ▲ 0.7% |
| June | 65.6% | 37.5% | ▼ 42.9% |
| July | 85.7% | 61.3% | ▼ 28.5% |
| August | 90.6% | – | – |
| September | 100.0% | – | – |
| October | 68.0% | – | in progress |
| November | 100.0% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 78.8% | 73.3% | ▼ 7.1% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | 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 99.3% 577
- Cancelled 0.7% 4
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN HDN Denver International Airport – Yampa Valley Airport | 227 | 9.7 min | 73.3% | 60 |
| SDF MDW Louisville Muhammad Ali International Airport – Chicago Midway International Airport | 437 | -1.6 min | 98.3% | 58 |
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 10.8 min | 79.3% | 53 |
| SAT DAL San Antonio International Airport – Dallas Love Field | 399 | 15.2 min | 70.0% | 50 |
| SNA SJC John Wayne Orange County International Airport – Mineta San Jose International Airport | 550 | 8.7 min | 79.6% | 49 |
| DEN SAT Denver International Airport – San Antonio International Airport | 1,280 | 6.4 min | 81.8% | 33 |
| ORD BWI Chicago O'Hare International Airport – Baltimore/Washington International Thurgood Marshall Airport | 998 | 18.8 min | 70.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 78.6% | 0 |
| November 2024 | 18 | 17 | 76.5% | 1 |
| December 2024 | 15 | 15 | 53.3% | 0 |
| January 2025 | 26 | 26 | 84.6% | 0 |
| February 2025 | 24 | 24 | 91.7% | 0 |
| March 2025 | 34 | 34 | 76.5% | 0 |
| April 2025 | 23 | 23 | 73.9% | 0 |
| May 2025 | 23 | 23 | 73.9% | 0 |
| June 2025 | 32 | 32 | 65.6% | 0 |
| July 2025 | 35 | 35 | 85.7% | 0 |
| August 2025 | 32 | 32 | 90.6% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 52 | 50 | 68.0% | 2 |
| November 2025 | 6 | 6 | 100.0% | 0 |
| December 2025 | 2 | 2 | 100.0% | 0 |
| January 2026 | 39 | 39 | 82.1% | 0 |
| February 2026 | 36 | 36 | 80.6% | 0 |
| March 2026 | 6 | 6 | 100.0% | 0 |
| April 2026 | 35 | 35 | 77.1% | 0 |
| May 2026 | 43 | 43 | 74.4% | 0 |
| June 2026 | 24 | 24 | 37.5% | 0 |
| July 2026 | 32 | 31 | 61.3% | 1 |