WN4038
WN4038 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Portland to Oakland. Of 472 departures recorded from October 2024 to July 2026, 70.9% left on time, according to the US BTS.
- On-time departures70.9%of 472 flights
- Average delay14.1 min
- July 202626▼ 3.7%vs July 2025
- Cancelled0.2%
- Legs flown under this number28
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 | 6 | 3 | ▼ 50.0% |
| February | 10 | 21 | ▲ 110.0% |
| March | 49 | 56 | ▲ 14.3% |
| April | 19 | 24 | ▲ 26.3% |
| May | 9 | 14 | ▲ 55.6% |
| June | 23 | 24 | ▲ 4.3% |
| July | 27 | 26 | ▼ 3.7% |
| August | 18 | – | – |
| September | 17 | – | – |
| October | 18 | – | in progress |
| November | 26 | – | – |
| December | 23 | – | – |
| Year to date (Jan–Jul) | 143 | 168 | ▲ 17.5% |
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 | 50.0% | 100.0% | ▲ 100.0% |
| February | 90.0% | 90.5% | ▲ 0.5% |
| March | 46.9% | 67.9% | ▲ 44.6% |
| April | 68.4% | 75.0% | ▲ 9.6% |
| May | 88.9% | 28.6% | ▼ 67.9% |
| June | 100.0% | 62.5% | ▼ 37.5% |
| July | 85.2% | 50.0% | ▼ 41.3% |
| August | 50.0% | – | – |
| September | 58.8% | – | – |
| October | 72.2% | – | in progress |
| November | 92.0% | – | – |
| December | 82.6% | – | – |
| Year-to-date average (Jan–Jul) | 75.6% | 67.8% | ▼ 10.4% |
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 | 0 | 0 | – |
| February | 0 | 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 | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 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 99.8% 471
- Cancelled 0.2% 1
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PDX OAK Portland International Airport – Oakland San Francisco Bay Airport | 876 | 2.8 min | 92.3% | 52 |
| TPA MSY Tampa International Airport – Louis Armstrong New Orleans International Airport | 785 | 18.6 min | 55.1% | 49 |
| PHL MDW Philadelphia International Airport – Chicago Midway International Airport | 1,073 | 1.3 min | 90.9% | 45 |
| BNA MCO Nashville International Airport – Orlando International Airport | 993 | 9.1 min | 74.4% | 39 |
| PHX DEN Phoenix Sky Harbor International Airport – Denver International Airport | 968 | 37.8 min | 50.0% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 84.6% | 0 |
| November 2024 | 19 | 19 | 84.2% | 0 |
| December 2024 | 14 | 14 | 71.4% | 0 |
| January 2025 | 6 | 6 | 50.0% | 0 |
| February 2025 | 10 | 10 | 90.0% | 0 |
| March 2025 | 49 | 49 | 46.9% | 0 |
| April 2025 | 19 | 19 | 68.4% | 0 |
| May 2025 | 9 | 9 | 88.9% | 0 |
| June 2025 | 23 | 23 | 100.0% | 0 |
| July 2025 | 27 | 27 | 85.2% | 0 |
| August 2025 | 18 | 18 | 50.0% | 0 |
| September 2025 | 17 | 17 | 58.8% | 0 |
| October 2025 | 18 | 18 | 72.2% | 0 |
| November 2025 | 26 | 25 | 92.0% | 1 |
| December 2025 | 23 | 23 | 82.6% | 0 |
| January 2026 | 3 | 3 | 100.0% | 0 |
| February 2026 | 21 | 21 | 90.5% | 0 |
| March 2026 | 56 | 56 | 67.9% | 0 |
| April 2026 | 24 | 24 | 75.0% | 0 |
| May 2026 | 14 | 14 | 28.6% | 0 |
| June 2026 | 24 | 24 | 62.5% | 0 |
| July 2026 | 26 | 26 | 50.0% | 0 |