WN4108
WN4108 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Raleigh to Chicago. Of 423 departures recorded from October 2024 to July 2026, 72.5% left on time, according to the US BTS.
- On-time departures72.5%of 423 flights
- Average delay14.5 min
- July 202645▲ 350.0%vs July 2025
- Cancelled0.5%
- Legs flown under this number18
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 | 3 | 5 | ▲ 66.7% |
| February | 2 | 3 | ▲ 50.0% |
| March | 19 | 27 | ▲ 42.1% |
| April | 28 | 22 | ▼ 21.4% |
| May | 31 | 23 | ▼ 25.8% |
| June | 10 | 40 | ▲ 300.0% |
| July | 10 | 45 | ▲ 350.0% |
| August | 22 | – | – |
| September | 26 | – | – |
| October | 1 | – | in progress |
| November | 27 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 103 | 165 | ▲ 60.2% |
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 | 100.0% | 80.0% | ▼ 20.0% |
| February | 50.0% | 100.0% | ▲ 100.0% |
| March | 89.5% | 77.8% | ▼ 13.1% |
| April | 75.0% | 63.6% | ▼ 15.1% |
| May | 66.7% | 56.5% | ▼ 15.2% |
| June | 100.0% | 62.5% | ▼ 37.5% |
| July | 70.0% | 68.9% | ▼ 1.6% |
| August | 72.7% | – | – |
| September | 61.5% | – | – |
| October | 100.0% | – | in progress |
| November | 84.6% | – | – |
| December | 71.0% | – | – |
| Year-to-date average (Jan–Jul) | 78.7% | 72.8% | ▼ 7.6% |
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 | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
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 |
|---|---|---|---|---|
| RDU MDW Raleigh-Durham International Airport – Chicago Midway International Airport | 1,016 | 10.6 min | 77.4% | 63 |
| STL LAS St. Louis Lambert International Airport – Harry Reid International Airport | 2,202 | 8.3 min | 75.0% | 57 |
| HOU VPS William P. Hobby Airport – Destin-Fort Walton Beach Airport | 848 | 17.6 min | 60.0% | 50 |
| SJC PDX Mineta San Jose International Airport – Portland International Airport | 916 | 20.3 min | 67.4% | 49 |
| PHX LAS Phoenix Sky Harbor International Airport – Harry Reid International Airport | 411 | 22.6 min | 52.6% | 38 |
| OGG HNL Kahului International Airport – Daniel K. Inouye International Airport | 162 | 10.6 min | 81.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 79.0% | 0 |
| November 2024 | 16 | 16 | 93.8% | 0 |
| December 2024 | 13 | 13 | 61.5% | 0 |
| January 2025 | 3 | 3 | 100.0% | 0 |
| February 2025 | 2 | 2 | 50.0% | 0 |
| March 2025 | 19 | 19 | 89.5% | 0 |
| April 2025 | 28 | 28 | 75.0% | 0 |
| May 2025 | 31 | 30 | 66.7% | 1 |
| June 2025 | 10 | 10 | 100.0% | 0 |
| July 2025 | 10 | 10 | 70.0% | 0 |
| August 2025 | 22 | 22 | 72.7% | 0 |
| September 2025 | 26 | 26 | 61.5% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 27 | 26 | 84.6% | 1 |
| December 2025 | 31 | 31 | 71.0% | 0 |
| January 2026 | 5 | 5 | 80.0% | 0 |
| February 2026 | 3 | 3 | 100.0% | 0 |
| March 2026 | 27 | 27 | 77.8% | 0 |
| April 2026 | 22 | 22 | 63.6% | 0 |
| May 2026 | 23 | 23 | 56.5% | 0 |
| June 2026 | 40 | 40 | 62.5% | 0 |
| July 2026 | 45 | 45 | 68.9% | 0 |