WN3611
WN3611 (Southwest Airlines) is a multi-stop service on 20 routes, busiest Buffalo to Baltimore. Of 520 departures recorded from October 2024 to July 2026, 74.4% left on time, according to the US BTS.
- On-time departures74.4%of 520 flights
- Average delay11.5 min
- July 202616▼ 46.7%vs July 2025
- Cancelled1.0%
- Legs flown under this number20
according to the US BTS · Oct 12, 2024 → Jul 29, 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 | 32 | 15 | ▼ 53.1% |
| February | 28 | 19 | ▼ 32.1% |
| March | 5 | 29 | ▲ 480.0% |
| April | 11 | 30 | ▲ 172.7% |
| May | 11 | 31 | ▲ 181.8% |
| June | 29 | 18 | ▼ 37.9% |
| July | 30 | 16 | ▼ 46.7% |
| August | 8 | – | – |
| September | 4 | – | – |
| October | 29 | – | in progress |
| November | 43 | – | – |
| December | 37 | – | – |
| Year to date (Jan–Jul) | 146 | 158 | ▲ 8.2% |
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 | 87.1% | 86.7% | ▼ 0.5% |
| February | 89.3% | 84.2% | ▼ 5.7% |
| March | 100.0% | 82.1% | ▼ 17.9% |
| April | 63.6% | 60.0% | ▼ 5.7% |
| May | 80.0% | 19.4% | ▼ 75.8% |
| June | 55.2% | 61.1% | ▲ 10.8% |
| July | 79.3% | 31.3% | ▼ 60.6% |
| August | 37.5% | – | – |
| September | 75.0% | – | – |
| October | 100.0% | – | in progress |
| November | 93.0% | – | – |
| December | 78.4% | – | – |
| Year-to-date average (Jan–Jul) | 79.2% | 60.7% | ▼ 23.4% |
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 | 1 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 1 | ▼ 66.7% |
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 99.0% 515
- Cancelled 1.0% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BUF BWI Buffalo Niagara International Airport – Baltimore/Washington International Thurgood Marshall Airport | 453 | 1.5 min | 89.2% | 75 |
| MAF DAL Midland International Air and Space Port – Dallas Love Field | 513 | 16.3 min | 66.1% | 60 |
| MDW PHL Chicago Midway International Airport – Philadelphia International Airport | 1,073 | 26.2 min | 36.2% | 58 |
| BWI FLL Baltimore/Washington International Thurgood Marshall Airport – Fort Lauderdale Hollywood International Airport | 1,493 | 12.4 min | 76.1% | 47 |
| SRQ MCO Sarasota Bradenton International Airport – Orlando International Airport | 168 | 5.6 min | 93.3% | 45 |
| MCI DEN Kansas City International Airport – Denver International Airport | 855 | 6.0 min | 89.2% | 37 |
| MDW SRQ Chicago Midway International Airport – Sarasota Bradenton International Airport | 1,669 | 10.6 min | 77.8% | 36 |
| SLC SMF Salt Lake City International Airport – Sacramento International Airport | 854 | 7.5 min | 83.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 84.2% | 0 |
| November 2024 | 42 | 42 | 83.3% | 0 |
| December 2024 | 34 | 33 | 75.8% | 1 |
| January 2025 | 32 | 31 | 87.1% | 1 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 5 | 5 | 100.0% | 0 |
| April 2025 | 11 | 11 | 63.6% | 0 |
| May 2025 | 11 | 10 | 80.0% | 1 |
| June 2025 | 29 | 29 | 55.2% | 0 |
| July 2025 | 30 | 29 | 79.3% | 1 |
| August 2025 | 8 | 8 | 37.5% | 0 |
| September 2025 | 4 | 4 | 75.0% | 0 |
| October 2025 | 29 | 29 | 100.0% | 0 |
| November 2025 | 43 | 43 | 93.0% | 0 |
| December 2025 | 37 | 37 | 78.4% | 0 |
| January 2026 | 15 | 15 | 86.7% | 0 |
| February 2026 | 19 | 19 | 84.2% | 0 |
| March 2026 | 29 | 28 | 82.1% | 1 |
| April 2026 | 30 | 30 | 60.0% | 0 |
| May 2026 | 31 | 31 | 19.4% | 0 |
| June 2026 | 18 | 18 | 61.1% | 0 |
| July 2026 | 16 | 16 | 31.3% | 0 |