WN4376
WN4376 (Southwest Airlines) is a multi-stop service on 12 routes, busiest Colorado Springs to Denver. Of 324 departures recorded from October 2024 to July 2026, 81.2% left on time, according to the US BTS.
- On-time departures81.2%of 324 flights
- Average delay7.5 min
- July 202631
- Cancelled0.0%
- Legs flown under this number12
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 32 | – |
| February | – | 28 | – |
| March | 8 | 31 | ▲ 287.5% |
| April | 19 | 9 | ▼ 52.6% |
| May | 22 | 5 | ▼ 77.3% |
| June | 3 | 27 | ▲ 800.0% |
| July | – | 31 | – |
| August | 26 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 19 | – | – |
| December | 24 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 100.0% | – |
| February | – | 85.7% | – |
| March | 62.5% | 64.5% | ▲ 3.2% |
| April | 57.9% | 66.7% | ▲ 15.2% |
| May | 68.2% | 40.0% | ▼ 41.3% |
| June | 100.0% | 96.3% | ▼ 3.7% |
| July | – | 100.0% | – |
| August | 92.3% | – | – |
| September | 86.7% | – | – |
| October | 100.0% | – | in progress |
| November | 57.9% | – | – |
| December | 79.2% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| 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 100.0% 324
- Cancelled 0.0% 0
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 |
|---|---|---|---|---|
| COS DEN City of Colorado Springs Municipal Airport – Denver International Airport | 117 | 4.0 min | 93.1% | 58 |
| CMH BWI John Glenn Columbus International Airport – Baltimore/Washington International Thurgood Marshall Airport | 541 | -2.2 min | 98.3% | 58 |
| SRQ BNA Sarasota Bradenton International Airport – Nashville International Airport | 1,046 | 2.2 min | 89.5% | 57 |
| SAN OAK San Diego International Airport – Oakland San Francisco Bay Airport | 718 | 17.3 min | 64.3% | 42 |
| SMF PDX Sacramento International Airport – Portland International Airport | 771 | 12.3 min | 75.0% | 36 |
| SAN SAT San Diego International Airport – San Antonio International Airport | 1,814 | 16.3 min | 63.6% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 9 | 9 | 77.8% | 0 |
| March 2025 | 8 | 8 | 62.5% | 0 |
| April 2025 | 19 | 19 | 57.9% | 0 |
| May 2025 | 22 | 22 | 68.2% | 0 |
| June 2025 | 3 | 3 | 100.0% | 0 |
| August 2025 | 26 | 26 | 92.3% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 19 | 19 | 57.9% | 0 |
| December 2025 | 24 | 24 | 79.2% | 0 |
| January 2026 | 32 | 32 | 100.0% | 0 |
| February 2026 | 28 | 28 | 85.7% | 0 |
| March 2026 | 31 | 31 | 64.5% | 0 |
| April 2026 | 9 | 9 | 66.7% | 0 |
| May 2026 | 5 | 5 | 40.0% | 0 |
| June 2026 | 27 | 27 | 96.3% | 0 |
| July 2026 | 31 | 31 | 100.0% | 0 |