WN3120
WN3120 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Buffalo to Denver. Of 405 departures recorded from October 2024 to July 2026, 76.1% left on time, according to the US BTS.
- On-time departures76.1%of 405 flights
- Average delay10.4 min
- July 202628▼ 9.7%vs July 2025
- Cancelled0.7%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 8 | 8 | 0.0% |
| February | 8 | 18 | ▲ 125.0% |
| March | 27 | 29 | ▲ 7.4% |
| April | 7 | 35 | ▲ 400.0% |
| May | – | 34 | – |
| June | 26 | 28 | ▲ 7.7% |
| July | 31 | 28 | ▼ 9.7% |
| August | 11 | – | – |
| September | 8 | – | – |
| October | 43 | – | in progress |
| November | 8 | – | – |
| December | 13 | – | – |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 50.0% | ▼ 50.0% |
| February | 50.0% | 66.7% | ▲ 33.3% |
| March | 81.5% | 89.7% | ▲ 10.0% |
| April | 71.4% | 100.0% | ▲ 40.0% |
| May | – | 85.3% | – |
| June | 92.3% | 60.7% | ▼ 34.2% |
| July | 100.0% | 71.4% | ▼ 28.6% |
| August | 45.5% | – | – |
| September | 87.5% | – | – |
| October | 53.7% | – | in progress |
| November | 87.5% | – | – |
| December | 0.0% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | 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 99.3% 402
- Cancelled 0.7% 3
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| BUF DEN Buffalo Niagara International Airport – Denver International Airport | 2,182 | 1.1 min | 95.1% | 61 |
| OKC MCO OKC Will Rogers World Airport – Orlando International Airport | 1,718 | 18.7 min | 68.0% | 50 |
| CVG BWI Cincinnati Northern Kentucky International Airport – Baltimore/Washington International Thurgood Marshall Airport | 690 | 0.4 min | 94.0% | 50 |
| LAX LAS Los Angeles International Airport – Harry Reid International Airport | 380 | 10.5 min | 76.3% | 38 |
| TUL DEN Tulsa International Airport – Denver International Airport | 870 | 0.2 min | 93.9% | 33 |
| MDW DAL Chicago Midway International Airport – Dallas Love Field | 1,277 | 20.9 min | 56.7% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 9 | 9 | 88.9% | 0 |
| November 2024 | 15 | 14 | 71.4% | 1 |
| December 2024 | 11 | 11 | 90.9% | 0 |
| January 2025 | 8 | 8 | 100.0% | 0 |
| February 2025 | 8 | 8 | 50.0% | 0 |
| March 2025 | 27 | 27 | 81.5% | 0 |
| April 2025 | 7 | 7 | 71.4% | 0 |
| June 2025 | 26 | 26 | 92.3% | 0 |
| July 2025 | 31 | 31 | 100.0% | 0 |
| August 2025 | 11 | 11 | 45.5% | 0 |
| September 2025 | 8 | 8 | 87.5% | 0 |
| October 2025 | 43 | 41 | 53.7% | 2 |
| November 2025 | 8 | 8 | 87.5% | 0 |
| December 2025 | 13 | 13 | 0.0% | 0 |
| January 2026 | 8 | 8 | 50.0% | 0 |
| February 2026 | 18 | 18 | 66.7% | 0 |
| March 2026 | 29 | 29 | 89.7% | 0 |
| April 2026 | 35 | 35 | 100.0% | 0 |
| May 2026 | 34 | 34 | 85.3% | 0 |
| June 2026 | 28 | 28 | 60.7% | 0 |
| July 2026 | 28 | 28 | 71.4% | 0 |