WN4277
WN4277 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Nashville to Norfolk. Of 434 departures recorded from October 2024 to July 2026, 71.8% left on time, according to the US BTS.
- On-time departures71.8%of 434 flights
- Average delay15.9 min
- July 202613▼ 58.1%vs July 2025
- Cancelled1.2%
- 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 | 33 | 2 | ▼ 93.9% |
| February | 30 | 7 | ▼ 76.7% |
| March | 5 | 21 | ▲ 320.0% |
| April | 15 | 15 | 0.0% |
| May | 22 | 13 | ▼ 40.9% |
| June | 28 | 25 | ▼ 10.7% |
| July | 31 | 13 | ▼ 58.1% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 15 | – | in progress |
| November | 24 | – | – |
| December | 20 | – | – |
| Year to date (Jan–Jul) | 164 | 96 | ▼ 41.5% |
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 | 84.9% | 100.0% | ▲ 17.9% |
| February | 76.7% | 57.1% | ▼ 25.5% |
| March | 80.0% | 76.2% | ▼ 4.8% |
| April | 53.3% | 84.6% | ▲ 58.7% |
| May | 31.8% | 84.6% | ▲ 165.9% |
| June | 60.7% | 36.0% | ▼ 40.7% |
| July | 73.3% | 15.4% | ▼ 79.0% |
| August | 70.4% | – | – |
| September | 80.8% | – | – |
| October | 66.7% | – | in progress |
| November | 100.0% | – | – |
| December | 95.0% | – | – |
| Year-to-date average (Jan–Jul) | 65.8% | 64.9% | ▼ 1.5% |
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 | 2 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 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 98.8% 429
- Cancelled 1.2% 5
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 26, 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 |
|---|---|---|---|---|
| BNA ORF Nashville International Airport – Norfolk International Airport | 940 | 6.1 min | 86.5% | 74 |
| SJC DEN Mineta San Jose International Airport – Denver International Airport | 1,522 | 19.9 min | 65.0% | 61 |
| SJC BUR Mineta San Jose International Airport – Hollywood Burbank/Bob Hope Airport | 477 | 4.3 min | 80.0% | 50 |
| CLE MDW Cleveland Hopkins International Airport – Chicago Midway International Airport | 493 | -3.9 min | 97.7% | 46 |
| SMF ONT Sacramento International Airport – Ontario International Airport | 627 | 35.7 min | 38.5% | 39 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 9 | 9 | 100.0% | 0 |
| November 2024 | 25 | 25 | 88.0% | 0 |
| December 2024 | 28 | 28 | 78.6% | 0 |
| January 2025 | 33 | 33 | 84.9% | 0 |
| February 2025 | 30 | 30 | 76.7% | 0 |
| March 2025 | 5 | 5 | 80.0% | 0 |
| April 2025 | 15 | 15 | 53.3% | 0 |
| May 2025 | 22 | 22 | 31.8% | 0 |
| June 2025 | 28 | 28 | 60.7% | 0 |
| July 2025 | 31 | 30 | 73.3% | 1 |
| August 2025 | 27 | 27 | 70.4% | 0 |
| September 2025 | 26 | 26 | 80.8% | 0 |
| October 2025 | 15 | 15 | 66.7% | 0 |
| November 2025 | 24 | 22 | 100.0% | 2 |
| December 2025 | 20 | 20 | 95.0% | 0 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| February 2026 | 7 | 7 | 57.1% | 0 |
| March 2026 | 21 | 21 | 76.2% | 0 |
| April 2026 | 15 | 13 | 84.6% | 2 |
| May 2026 | 13 | 13 | 84.6% | 0 |
| June 2026 | 25 | 25 | 36.0% | 0 |
| July 2026 | 13 | 13 | 15.4% | 0 |