WN3873
WN3873 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Oakland to Portland. Of 473 departures recorded from October 2024 to July 2026, 74.9% left on time, according to the US BTS.
- On-time departures74.9%of 473 flights
- Average delay11.9 min
- July 202627▼ 12.9%vs July 2025
- Cancelled1.5%
- Legs flown under this number17
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 | 21 | 6 | ▼ 71.4% |
| February | 21 | 18 | ▼ 14.3% |
| March | 20 | 13 | ▼ 35.0% |
| April | 35 | 26 | ▼ 25.7% |
| May | 39 | 31 | ▼ 20.5% |
| June | 32 | 26 | ▼ 18.8% |
| July | 31 | 27 | ▼ 12.9% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 13 | – | – |
| December | 4 | – | – |
| Year to date (Jan–Jul) | 199 | 147 | ▼ 26.1% |
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 | 71.4% | 80.0% | ▲ 12.0% |
| February | 76.2% | 76.5% | ▲ 0.4% |
| March | 95.0% | 53.9% | ▼ 43.3% |
| April | 91.4% | 69.2% | ▼ 24.3% |
| May | 64.1% | 43.3% | ▼ 32.4% |
| June | 59.4% | 64.0% | ▲ 7.8% |
| July | 71.0% | 83.3% | ▲ 17.4% |
| August | 93.6% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 76.9% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 75.5% | 67.2% | ▼ 11.0% |
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 | 1 | – |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 1 | – |
| July | 0 | 3 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 7 |
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 98.5% 466
- Cancelled 1.5% 7
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| OAK PDX Oakland San Francisco Bay Airport – Portland International Airport | 876 | 11.9 min | 71.8% | 71 |
| SRQ MCO Sarasota Bradenton International Airport – Orlando International Airport | 168 | -6.1 min | 100.0% | 58 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 20.9 min | 70.7% | 58 |
| DEN ATL Denver International Airport – Hartsfield Jackson Atlanta International Airport | 1,927 | 21.5 min | 69.2% | 52 |
| SNA SMF John Wayne Orange County International Airport – Sacramento International Airport | 650 | 2.7 min | 76.1% | 50 |
| DEN PHX Denver International Airport – Phoenix Sky Harbor International Airport | 968 | 21.8 min | 46.3% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 21 | 21 | 90.5% | 0 |
| November 2024 | 18 | 18 | 61.1% | 0 |
| December 2024 | 9 | 9 | 77.8% | 0 |
| January 2025 | 21 | 21 | 71.4% | 0 |
| February 2025 | 21 | 21 | 76.2% | 0 |
| March 2025 | 20 | 20 | 95.0% | 0 |
| April 2025 | 35 | 35 | 91.4% | 0 |
| May 2025 | 39 | 39 | 64.1% | 0 |
| June 2025 | 32 | 32 | 59.4% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 31 | 31 | 93.6% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 13 | 13 | 76.9% | 0 |
| December 2025 | 4 | 4 | 75.0% | 0 |
| January 2026 | 6 | 5 | 80.0% | 1 |
| February 2026 | 18 | 17 | 76.5% | 1 |
| March 2026 | 13 | 13 | 53.9% | 0 |
| April 2026 | 26 | 26 | 69.2% | 0 |
| May 2026 | 31 | 30 | 43.3% | 1 |
| June 2026 | 26 | 25 | 64.0% | 1 |
| July 2026 | 27 | 24 | 83.3% | 3 |