WN429
WN429 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Portland to Baltimore. Of 661 departures recorded from October 2024 to July 2026, 85.2% left on time, according to the US BTS.
- On-time departures85.2%of 661 flights
- Average delay6.9 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number32
Recorded departures by month
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 | 33 | 15 | ▼ 54.5% |
| February | 28 | 18 | ▼ 35.7% |
| March | 19 | 29 | ▲ 52.6% |
| April | 24 | 30 | ▲ 25.0% |
| May | 26 | 31 | ▲ 19.2% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 47 | – | – |
| December | 48 | – | – |
| Year to date (Jan–Jul) | 191 | 184 | ▼ 3.7% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 96.9% | 93.3% | ▼ 3.7% |
| February | 96.3% | 94.4% | ▼ 1.9% |
| March | 89.5% | 89.7% | ▲ 0.2% |
| April | 95.8% | 93.3% | ▼ 2.6% |
| May | 96.0% | 90.3% | ▼ 5.9% |
| June | 90.0% | 80.0% | ▼ 11.1% |
| July | 74.2% | 71.0% | ▼ 4.3% |
| August | 77.4% | – | – |
| September | 93.3% | – | – |
| October | 80.7% | – | in progress |
| November | 82.2% | – | – |
| December | 61.7% | – | – |
| Year-to-date average (Jan–Jul) | 91.2% | 87.4% | ▼ 4.2% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 0 | ▼ 100.0% |
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 99.1% 655
- Cancelled 0.9% 6
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
8Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 25 | 25 | 88.0% | 0 |
| November 2024 | 34 | 34 | 88.2% | 0 |
| December 2024 | 40 | 40 | 82.5% | 0 |
| January 2025 | 33 | 32 | 96.9% | 1 |
| February 2025 | 28 | 27 | 96.3% | 1 |
| March 2025 | 19 | 19 | 89.5% | 0 |
| April 2025 | 24 | 24 | 95.8% | 0 |
| May 2025 | 26 | 25 | 96.0% | 1 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 31 | 31 | 74.2% | 0 |
| August 2025 | 31 | 31 | 77.4% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 80.7% | 0 |
| November 2025 | 47 | 45 | 82.2% | 2 |
| December 2025 | 48 | 47 | 61.7% | 1 |
| January 2026 | 15 | 15 | 93.3% | 0 |
| February 2026 | 18 | 18 | 94.4% | 0 |
| March 2026 | 29 | 29 | 89.7% | 0 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 31 | 31 | 71.0% | 0 |