WN1139
WN1139 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Dallas to Baltimore. Of 711 departures recorded from October 2024 to July 2026, 75.5% left on time, according to the US BTS.
- On-time departures75.5%of 711 flights
- Average delay12.7 min
- July 202655▲ 34.1%vs July 2025
- Cancelled1.1%
- Legs flown under this number30
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 17 | 7 | ▼ 58.8% |
| February | 21 | 23 | ▲ 9.5% |
| March | 29 | 35 | ▲ 20.7% |
| April | 30 | 31 | ▲ 3.3% |
| May | 31 | 31 | 0.0% |
| June | 36 | 49 | ▲ 36.1% |
| July | 41 | 55 | ▲ 34.1% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 29 | – | in progress |
| November | 49 | – | – |
| December | 57 | – | – |
| Year to date (Jan–Jul) | 205 | 231 | ▲ 12.7% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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% | 71.4% | ▼ 28.6% |
| February | 90.5% | 56.5% | ▼ 37.5% |
| March | 89.7% | 88.6% | ▼ 1.2% |
| April | 82.8% | 87.1% | ▲ 5.2% |
| May | 54.8% | 54.8% | 0.0% |
| June | 55.6% | 59.2% | ▲ 6.5% |
| July | 66.7% | 49.1% | ▼ 26.4% |
| August | 100.0% | – | – |
| September | 96.7% | – | – |
| October | 89.3% | – | in progress |
| November | 85.7% | – | – |
| December | 73.7% | – | – |
| Year-to-date average (Jan–Jul) | 77.1% | 66.7% | ▼ 13.6% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 5 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 7 | 0 | ▼ 100.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.9% 703
- 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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DAL BWI Dallas Love Field – Baltimore/Washington International Thurgood Marshall Airport | 1,942 | 5.3 min | 90.5% | 85 |
| BZN DEN Bozeman Yellowstone International Airport – Denver International Airport | 844 | 16.0 min | 72.8% | 82 |
| BNA LGA Nashville International Airport – LaGuardia Airport | 1,228 | 28.5 min | 58.9% | 61 |
| MCO DEN Orlando International Airport – Denver International Airport | 2,486 | 15.7 min | 70.7% | 58 |
| LIT STL Bill & Hillary Clinton National Airport/Adams Field – St. Louis Lambert International Airport | 477 | -2.7 min | 98.3% | 58 |
| MDW BZN Chicago Midway International Airport – Bozeman Yellowstone International Airport | 1,923 | 22.2 min | 52.4% | 42 |
| DEN OKC Denver International Airport – OKC Will Rogers World Airport | 796 | 11.1 min | 69.1% | 42 |
| BZN SAN Bozeman Yellowstone International Airport – San Diego International Airport | 1,540 | 32.9 min | 48.8% | 41 |
| STL DEN St. Louis Lambert International Airport – Denver International Airport | 1,236 | 2.9 min | 93.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 29 | 29 | 82.8% | 0 |
| December 2024 | 30 | 30 | 86.7% | 0 |
| January 2025 | 17 | 16 | 100.0% | 1 |
| February 2025 | 21 | 21 | 90.5% | 0 |
| March 2025 | 29 | 29 | 89.7% | 0 |
| April 2025 | 30 | 29 | 82.8% | 1 |
| May 2025 | 31 | 31 | 54.8% | 0 |
| June 2025 | 36 | 36 | 55.6% | 0 |
| July 2025 | 41 | 36 | 66.7% | 5 |
| August 2025 | 31 | 31 | 100.0% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 29 | 28 | 89.3% | 1 |
| November 2025 | 49 | 49 | 85.7% | 0 |
| December 2025 | 57 | 57 | 73.7% | 0 |
| January 2026 | 7 | 7 | 71.4% | 0 |
| February 2026 | 23 | 23 | 56.5% | 0 |
| March 2026 | 35 | 35 | 88.6% | 0 |
| April 2026 | 31 | 31 | 87.1% | 0 |
| May 2026 | 31 | 31 | 54.8% | 0 |
| June 2026 | 49 | 49 | 59.2% | 0 |
| July 2026 | 55 | 55 | 49.1% | 0 |