WN4486
WN4486 (Southwest Airlines) is a multi-stop service on 13 routes, busiest Baltimore to Portland. Of 285 departures recorded from October 2024 to July 2026, 66.1% left on time, according to the US BTS.
- On-time departures66.1%of 285 flights
- Average delay16.5 min
- July 202623▲ 15.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 27 | – |
| February | 8 | 28 | ▲ 250.0% |
| March | 1 | 30 | ▲ 2,900.0% |
| April | 23 | 9 | ▼ 60.9% |
| May | 31 | 4 | ▼ 87.1% |
| June | 24 | 19 | ▼ 20.8% |
| July | 20 | 23 | ▲ 15.0% |
| August | 8 | – | – |
| September | 4 | – | – |
| October | 14 | – | in progress |
| November | 4 | – | – |
| December | 2 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 76.9% | – |
| February | 85.7% | 82.1% | ▼ 4.2% |
| March | 100.0% | 76.7% | ▼ 23.3% |
| April | 60.9% | 55.6% | ▼ 8.7% |
| May | 51.6% | 50.0% | ▼ 3.1% |
| June | 83.3% | 36.8% | ▼ 55.8% |
| July | 90.0% | 39.1% | ▼ 56.5% |
| August | 62.5% | – | – |
| September | 75.0% | – | – |
| October | 35.7% | – | in progress |
| November | 100.0% | – | – |
| December | 0.0% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
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 99.3% 283
- Cancelled 0.7% 2
Share of all recorded flights in the period, all legs. · Oct 15, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MCO BWI Orlando International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,269 | 14.4 min | 77.2% | 58 |
| BWI PWM Baltimore/Washington International Thurgood Marshall Airport – Portland International Jetport | 727 | 19.5 min | 58.6% | 58 |
| SJC BUR Mineta San Jose International Airport – Hollywood Burbank/Bob Hope Airport | 477 | 2.6 min | 86.4% | 44 |
| HOU SAN William P. Hobby Airport – San Diego International Airport | 2,109 | 37.8 min | 38.1% | 42 |
| SMF MCO Sacramento International Airport – Orlando International Airport | 3,869 | 7.7 min | 78.1% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 100.0% | 0 |
| February 2025 | 8 | 7 | 85.7% | 1 |
| March 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 23 | 23 | 60.9% | 0 |
| May 2025 | 31 | 31 | 51.6% | 0 |
| June 2025 | 24 | 24 | 83.3% | 0 |
| July 2025 | 20 | 20 | 90.0% | 0 |
| August 2025 | 8 | 8 | 62.5% | 0 |
| September 2025 | 4 | 4 | 75.0% | 0 |
| October 2025 | 14 | 14 | 35.7% | 0 |
| November 2025 | 4 | 4 | 100.0% | 0 |
| December 2025 | 2 | 2 | 0.0% | 0 |
| January 2026 | 27 | 26 | 76.9% | 1 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 30 | 30 | 76.7% | 0 |
| April 2026 | 9 | 9 | 55.6% | 0 |
| May 2026 | 4 | 4 | 50.0% | 0 |
| June 2026 | 19 | 19 | 36.8% | 0 |
| July 2026 | 23 | 23 | 39.1% | 0 |