WN1189
WN1189 (Southwest Airlines) is a multi-stop service on 35 routes, busiest Baltimore to Boston. Of 661 departures recorded from October 2024 to July 2026, 75.4% left on time, according to the US BTS.
- On-time departures75.4%of 661 flights
- Average delay12.4 min
- July 20264▼ 86.7%vs July 2025
- Cancelled1.1%
- Legs flown under this number35
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 | 30 | 36 | ▲ 20.0% |
| February | 30 | 39 | ▲ 30.0% |
| March | 22 | 45 | ▲ 104.5% |
| April | 47 | 27 | ▼ 42.6% |
| May | 55 | 22 | ▼ 60.0% |
| June | 34 | 7 | ▼ 79.4% |
| July | 30 | 4 | ▼ 86.7% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 26 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 248 | 180 | ▼ 27.4% |
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 | 89.7% | 81.8% | ▼ 8.7% |
| February | 93.3% | 79.5% | ▼ 14.8% |
| March | 68.2% | 75.6% | ▲ 10.8% |
| April | 67.4% | 63.0% | ▼ 6.6% |
| May | 59.3% | 81.8% | ▲ 38.1% |
| June | 70.6% | 28.6% | ▼ 59.5% |
| July | 56.7% | 66.7% | ▲ 17.6% |
| August | 90.3% | – | – |
| September | 93.3% | – | – |
| October | 58.1% | – | in progress |
| November | 65.4% | – | – |
| December | 69.0% | – | – |
| Year-to-date average (Jan–Jul) | 72.2% | 68.1% | ▼ 5.6% |
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 | 1 | 3 | ▲ 200.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 4 | ▲ 33.3% |
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% 654
- Cancelled 1.1% 7
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 25, 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 |
|---|---|---|---|---|
| BWI BOS Baltimore/Washington International Thurgood Marshall Airport – Boston Logan International Airport | 594 | 1.4 min | 93.4% | 92 |
| ELP DEN El Paso International Airport – Denver International Airport | 908 | 3.7 min | 96.6% | 58 |
| DAL MAF Dallas Love Field – Midland International Air and Space Port | 513 | 7.4 min | 77.8% | 47 |
| DEN PHX Denver International Airport – Phoenix Sky Harbor International Airport | 968 | 16.8 min | 62.5% | 40 |
| STL LGA St. Louis Lambert International Airport – LaGuardia Airport | 1,426 | 21.9 min | 67.7% | 34 |
| DEN PDX Denver International Airport – Portland International Airport | 1,592 | 20.0 min | 58.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 22 | 22 | 86.4% | 0 |
| November 2024 | 32 | 32 | 96.9% | 0 |
| December 2024 | 32 | 32 | 87.5% | 0 |
| January 2025 | 30 | 29 | 89.7% | 1 |
| February 2025 | 30 | 30 | 93.3% | 0 |
| March 2025 | 22 | 22 | 68.2% | 0 |
| April 2025 | 47 | 46 | 67.4% | 1 |
| May 2025 | 55 | 54 | 59.3% | 1 |
| June 2025 | 34 | 34 | 70.6% | 0 |
| July 2025 | 30 | 30 | 56.7% | 0 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 58.1% | 0 |
| November 2025 | 26 | 26 | 65.4% | 0 |
| December 2025 | 29 | 29 | 69.0% | 0 |
| January 2026 | 36 | 33 | 81.8% | 3 |
| February 2026 | 39 | 39 | 79.5% | 0 |
| March 2026 | 45 | 45 | 75.6% | 0 |
| April 2026 | 27 | 27 | 63.0% | 0 |
| May 2026 | 22 | 22 | 81.8% | 0 |
| June 2026 | 7 | 7 | 28.6% | 0 |
| July 2026 | 4 | 3 | 66.7% | 1 |