WN820
WN820 (Southwest Airlines) is a multi-stop service on 40 routes, busiest Portland to Baltimore. Of 667 departures recorded from October 2024 to July 2026, 76.6% left on time, according to the US BTS.
- On-time departures76.6%of 667 flights
- Average delay11.5 min
- July 202627▲ 42.1%vs July 2025
- Cancelled0.6%
- Legs flown under this number40
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 | 30 | 32 | ▲ 6.7% |
| February | 28 | 35 | ▲ 25.0% |
| March | 31 | 40 | ▲ 29.0% |
| April | 42 | 35 | ▼ 16.7% |
| May | 50 | 35 | ▼ 30.0% |
| June | 19 | 26 | ▲ 36.8% |
| July | 19 | 27 | ▲ 42.1% |
| August | 29 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 31 | – | – |
| December | 34 | – | – |
| Year to date (Jan–Jul) | 219 | 230 | ▲ 5.0% |
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 | 80.0% | 80.7% | ▲ 0.8% |
| February | 85.7% | 79.4% | ▼ 7.4% |
| March | 86.7% | 66.7% | ▼ 23.1% |
| April | 83.3% | 65.7% | ▼ 21.1% |
| May | 82.0% | 51.4% | ▼ 37.3% |
| June | 94.7% | 65.4% | ▼ 31.0% |
| July | 94.7% | 74.1% | ▼ 21.8% |
| August | 72.4% | – | – |
| September | 73.3% | – | – |
| October | 58.1% | – | in progress |
| November | 80.7% | – | – |
| December | 64.7% | – | – |
| Year-to-date average (Jan–Jul) | 86.7% | 69.0% | ▼ 20.4% |
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 | 0 | 1 | – |
| February | 0 | 1 | – |
| March | 1 | 1 | 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 | – | – |
| Year to date (Jan–Jul) | 1 | 3 | ▲ 200.0% |
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 99.4% 663
- Cancelled 0.6% 4
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| TPA PIT Tampa International Airport – Pittsburgh International Airport | 1,408 | 20.2 min | 72.4% | 58 |
| PWM BWI Portland International Jetport – Baltimore/Washington International Thurgood Marshall Airport | 727 | 3.1 min | 87.5% | 58 |
| AUS TPA Austin Bergstrom International Airport – Tampa International Airport | 1,490 | 4.1 min | 80.4% | 46 |
| BWI JAN Baltimore/Washington International Thurgood Marshall Airport – Jackson-Medgar Wiley Evers International Airport | 1,428 | 6.3 min | 88.1% | 42 |
| BUR PHX Hollywood Burbank/Bob Hope Airport – Phoenix Sky Harbor International Airport | 593 | 12.2 min | 76.2% | 42 |
| SLC PHX Salt Lake City International Airport – Phoenix Sky Harbor International Airport | 818 | 9.1 min | 75.8% | 33 |
| ATL BWI Hartsfield Jackson Atlanta International Airport – Baltimore/Washington International Thurgood Marshall Airport | 928 | 13.0 min | 71.9% | 33 |
| JAN HOU Jackson-Medgar Wiley Evers International Airport – William P. Hobby Airport | 578 | 11.1 min | 78.1% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 94.7% | 0 |
| November 2024 | 16 | 16 | 87.5% | 0 |
| December 2024 | 28 | 28 | 92.9% | 0 |
| January 2025 | 30 | 30 | 80.0% | 0 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 31 | 30 | 86.7% | 1 |
| April 2025 | 42 | 42 | 83.3% | 0 |
| May 2025 | 50 | 50 | 82.0% | 0 |
| June 2025 | 19 | 19 | 94.7% | 0 |
| July 2025 | 19 | 19 | 94.7% | 0 |
| August 2025 | 29 | 29 | 72.4% | 0 |
| September 2025 | 30 | 30 | 73.3% | 0 |
| October 2025 | 31 | 31 | 58.1% | 0 |
| November 2025 | 31 | 31 | 80.7% | 0 |
| December 2025 | 34 | 34 | 64.7% | 0 |
| January 2026 | 32 | 31 | 80.7% | 1 |
| February 2026 | 35 | 34 | 79.4% | 1 |
| March 2026 | 40 | 39 | 66.7% | 1 |
| April 2026 | 35 | 35 | 65.7% | 0 |
| May 2026 | 35 | 35 | 51.4% | 0 |
| June 2026 | 26 | 26 | 65.4% | 0 |
| July 2026 | 27 | 27 | 74.1% | 0 |