WN331
WN331 (Southwest Airlines) is a multi-stop service on 37 routes, busiest Rochester to Baltimore. Of 749 departures recorded from October 2024 to July 2026, 78.5% left on time, according to the US BTS.
- On-time departures78.5%of 749 flights
- Average delay8.4 min
- July 202631▼ 53.0%vs July 2025
- Cancelled1.1%
- Legs flown under this number37
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 | 31 | 48 | ▲ 54.8% |
| February | 28 | 37 | ▲ 32.1% |
| March | 15 | 33 | ▲ 120.0% |
| April | 34 | 29 | ▼ 14.7% |
| May | 39 | 31 | ▼ 20.5% |
| June | 62 | 30 | ▼ 51.6% |
| July | 66 | 31 | ▼ 53.0% |
| August | 29 | – | – |
| September | 22 | – | – |
| October | 37 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 275 | 239 | ▼ 13.1% |
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 | 96.7% | 80.4% | ▼ 16.8% |
| February | 89.3% | 83.8% | ▼ 6.2% |
| March | 85.7% | 53.1% | ▼ 38.0% |
| April | 82.4% | 89.7% | ▲ 8.9% |
| May | 76.9% | 80.0% | ▲ 4.0% |
| June | 72.6% | 80.0% | ▲ 10.2% |
| July | 75.4% | 80.7% | ▲ 7.0% |
| August | 55.2% | – | – |
| September | 50.0% | – | – |
| October | 59.5% | – | in progress |
| November | 96.7% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 82.7% | 78.2% | ▼ 5.4% |
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 | 2 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 1 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| 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 | 4 | ▲ 33.3% |
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% 741
- 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 |
|---|---|---|---|---|
| ROC BWI Frederick Douglass Greater Rochester International Airport – Baltimore/Washington International Thurgood Marshall Airport | 447 | 1.0 min | 93.4% | 123 |
| SJC HNL Mineta San Jose International Airport – Daniel K. Inouye International Airport | 3,886 | 6.0 min | 87.5% | 64 |
| MCI TPA Kansas City International Airport – Tampa International Airport | 1,687 | 5.8 min | 82.8% | 58 |
| RDU BWI Raleigh-Durham International Airport – Baltimore/Washington International Thurgood Marshall Airport | 411 | 6.7 min | 81.1% | 55 |
| FLL DAL Fort Lauderdale Hollywood International Airport – Dallas Love Field | 1,780 | 8.5 min | 83.3% | 49 |
| BWI DEN Baltimore/Washington International Thurgood Marshall Airport – Denver International Airport | 2,394 | 22.6 min | 45.2% | 42 |
| ATL MDW Hartsfield Jackson Atlanta International Airport – Chicago Midway International Airport | 952 | 26.9 min | 53.1% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 23 | 22 | 81.8% | 1 |
| November 2024 | 31 | 31 | 93.6% | 0 |
| December 2024 | 32 | 32 | 93.8% | 0 |
| January 2025 | 31 | 30 | 96.7% | 1 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 15 | 14 | 85.7% | 1 |
| April 2025 | 34 | 34 | 82.4% | 0 |
| May 2025 | 39 | 39 | 76.9% | 0 |
| June 2025 | 62 | 62 | 72.6% | 0 |
| July 2025 | 66 | 65 | 75.4% | 1 |
| August 2025 | 29 | 29 | 55.2% | 0 |
| September 2025 | 22 | 22 | 50.0% | 0 |
| October 2025 | 37 | 37 | 59.5% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 31 | 80.7% | 0 |
| January 2026 | 48 | 46 | 80.4% | 2 |
| February 2026 | 37 | 37 | 83.8% | 0 |
| March 2026 | 33 | 32 | 53.1% | 1 |
| April 2026 | 29 | 29 | 89.7% | 0 |
| May 2026 | 31 | 30 | 80.0% | 1 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 31 | 31 | 80.7% | 0 |