WN4523
WN4523 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Cleveland to Nashville. Of 486 departures recorded from October 2024 to July 2026, 78.8% left on time, according to the US BTS.
- On-time departures78.8%of 486 flights
- Average delay10.6 min
- July 202639▼ 17.0%vs July 2025
- Cancelled0.8%
- Legs flown under this number26
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 | 61 | 8 | ▼ 86.9% |
| February | 46 | 18 | ▼ 60.9% |
| March | 9 | 2 | ▼ 77.8% |
| April | 3 | 27 | ▲ 800.0% |
| May | 4 | 36 | ▲ 800.0% |
| June | 43 | 25 | ▼ 41.9% |
| July | 47 | 39 | ▼ 17.0% |
| August | 22 | – | – |
| September | 17 | – | – |
| October | 30 | – | in progress |
| November | 5 | – | – |
| December | 7 | – | – |
| Year to date (Jan–Jul) | 213 | 155 | ▼ 27.2% |
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 | 86.7% | 71.4% | ▼ 17.6% |
| February | 91.3% | 68.8% | ▼ 24.7% |
| March | 66.7% | 100.0% | ▲ 50.0% |
| April | 100.0% | 81.5% | ▼ 18.5% |
| May | 75.0% | 75.0% | 0.0% |
| June | 76.7% | 68.0% | ▼ 11.4% |
| July | 61.7% | 74.4% | ▲ 20.5% |
| August | 90.9% | – | – |
| September | 82.4% | – | – |
| October | 86.7% | – | in progress |
| November | 40.0% | – | – |
| December | 71.4% | – | – |
| Year-to-date average (Jan–Jul) | 79.7% | 77.0% | ▼ 3.4% |
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 | 1 | 1 | 0.0% |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 3 | ▲ 200.0% |
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 99.2% 482
- Cancelled 0.8% 4
Share of all recorded flights in the period, all legs. · Oct 15, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| CLE BNA Cleveland Hopkins International Airport – Nashville International Airport | 721 | 5.5 min | 84.4% | 91 |
| SNA PHX John Wayne Orange County International Airport – Phoenix Sky Harbor International Airport | 544 | 19.1 min | 71.7% | 60 |
| STS BUR Charles M. Schulz Sonoma County Airport – Hollywood Burbank/Bob Hope Airport | 623 | 25.0 min | 65.0% | 40 |
| SNA OAK John Wayne Orange County International Airport – Oakland San Francisco Bay Airport | 597 | 8.0 min | 84.4% | 32 |
| SMF MDW Sacramento International Airport – Chicago Midway International Airport | 2,874 | 4.4 min | 87.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 83.3% | 0 |
| November 2024 | 17 | 17 | 88.2% | 0 |
| December 2024 | 14 | 14 | 85.7% | 0 |
| January 2025 | 61 | 60 | 86.7% | 1 |
| February 2025 | 46 | 46 | 91.3% | 0 |
| March 2025 | 9 | 9 | 66.7% | 0 |
| April 2025 | 3 | 3 | 100.0% | 0 |
| May 2025 | 4 | 4 | 75.0% | 0 |
| June 2025 | 43 | 43 | 76.7% | 0 |
| July 2025 | 47 | 47 | 61.7% | 0 |
| August 2025 | 22 | 22 | 90.9% | 0 |
| September 2025 | 17 | 17 | 82.4% | 0 |
| October 2025 | 30 | 30 | 86.7% | 0 |
| November 2025 | 5 | 5 | 40.0% | 0 |
| December 2025 | 7 | 7 | 71.4% | 0 |
| January 2026 | 8 | 7 | 71.4% | 1 |
| February 2026 | 18 | 16 | 68.8% | 2 |
| March 2026 | 2 | 2 | 100.0% | 0 |
| April 2026 | 27 | 27 | 81.5% | 0 |
| May 2026 | 36 | 36 | 75.0% | 0 |
| June 2026 | 25 | 25 | 68.0% | 0 |
| July 2026 | 39 | 39 | 74.4% | 0 |