WN1227
WN1227 (Southwest Airlines) is a multi-stop service on 42 routes, busiest Baltimore to Nashville. Of 752 departures recorded from October 2024 to July 2026, 70.3% left on time, according to the US BTS.
- On-time departures70.3%of 752 flights
- Average delay17.5 min
- July 202654▲ 54.3%vs July 2025
- Cancelled1.1%
- Legs flown under this number42
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 | 50 | 15 | ▼ 70.0% |
| February | 41 | 19 | ▼ 53.7% |
| March | 51 | 41 | ▼ 19.6% |
| April | 26 | 33 | ▲ 26.9% |
| May | 17 | 31 | ▲ 82.4% |
| June | 33 | 49 | ▲ 48.5% |
| July | 35 | 54 | ▲ 54.3% |
| August | 34 | – | – |
| September | 34 | – | – |
| October | 27 | – | in progress |
| November | 30 | – | – |
| December | 38 | – | – |
| Year to date (Jan–Jul) | 253 | 242 | ▼ 4.3% |
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 | 87.2% | 100.0% | ▲ 14.6% |
| February | 80.5% | 100.0% | ▲ 24.2% |
| March | 91.8% | 36.6% | ▼ 60.2% |
| April | 84.0% | 72.7% | ▼ 13.4% |
| May | 58.8% | 54.8% | ▼ 6.8% |
| June | 51.5% | 37.5% | ▼ 27.2% |
| July | 85.7% | 46.3% | ▼ 46.0% |
| August | 82.4% | – | – |
| September | 94.1% | – | – |
| October | 23.1% | – | in progress |
| November | 73.3% | – | – |
| December | 84.2% | – | – |
| Year-to-date average (Jan–Jul) | 77.1% | 64.0% | ▼ 17.0% |
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 | 3 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 2 | 0 | ▼ 100.0% |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 6 | 1 | ▼ 83.3% |
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 98.9% 744
- Cancelled 1.1% 8
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BWI BNA Baltimore/Washington International Thurgood Marshall Airport – Nashville International Airport | 944 | 5.5 min | 87.0% | 80 |
| MKE BNA General Mitchell International Airport – Nashville International Airport | 766 | 2.6 min | 87.7% | 57 |
| COS LAS City of Colorado Springs Municipal Airport – Harry Reid International Airport | 970 | 46.0 min | 36.7% | 49 |
| PHX AUS Phoenix Sky Harbor International Airport – Austin Bergstrom International Airport | 1,401 | 4.6 min | 86.1% | 43 |
| LAS DEN Harry Reid International Airport – Denver International Airport | 1,009 | 33.6 min | 33.3% | 33 |
| HOU BHM William P. Hobby Airport – Birmingham-Shuttlesworth International Airport | 917 | 0.2 min | 93.6% | 31 |
| LGB SLC Long Beach International Airport – Salt Lake City International Airport | 948 | -4.7 min | 100.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 64.3% | 0 |
| November 2024 | 33 | 33 | 81.8% | 0 |
| December 2024 | 47 | 47 | 78.7% | 0 |
| January 2025 | 50 | 47 | 87.2% | 3 |
| February 2025 | 41 | 41 | 80.5% | 0 |
| March 2025 | 51 | 49 | 91.8% | 2 |
| April 2025 | 26 | 25 | 84.0% | 1 |
| May 2025 | 17 | 17 | 58.8% | 0 |
| June 2025 | 33 | 33 | 51.5% | 0 |
| July 2025 | 35 | 35 | 85.7% | 0 |
| August 2025 | 34 | 34 | 82.4% | 0 |
| September 2025 | 34 | 34 | 94.1% | 0 |
| October 2025 | 27 | 26 | 23.1% | 1 |
| November 2025 | 30 | 30 | 73.3% | 0 |
| December 2025 | 38 | 38 | 84.2% | 0 |
| January 2026 | 15 | 15 | 100.0% | 0 |
| February 2026 | 19 | 19 | 100.0% | 0 |
| March 2026 | 41 | 41 | 36.6% | 0 |
| April 2026 | 33 | 33 | 72.7% | 0 |
| May 2026 | 31 | 31 | 54.8% | 0 |
| June 2026 | 49 | 48 | 37.5% | 1 |
| July 2026 | 54 | 54 | 46.3% | 0 |