OO3431
OO3431 (SkyWest Airlines) is a multi-stop service on 11 routes, busiest Portland to Seattle. Of 441 departures recorded from October 2024 to July 2026, 82.6% left on time, according to the US BTS.
- On-time departures82.6%of 441 flights
- Average delay11.0 min
- July 202631▲ 0.0%vs July 2025
- Cancelled2.0%
- Legs flown under this number11
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 20 | – | – |
| February | 17 | 7 | ▼ 58.8% |
| March | 13 | 7 | ▼ 46.2% |
| April | – | 8 | – |
| May | 17 | 10 | ▼ 41.2% |
| June | 30 | 21 | ▼ 30.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 63.2% | – | – |
| February | 75.0% | 28.6% | ▼ 61.9% |
| March | 76.9% | 85.7% | ▲ 11.4% |
| April | – | 71.4% | – |
| May | 100.0% | 100.0% | 0.0% |
| June | 90.0% | 90.5% | ▲ 0.5% |
| July | 87.1% | 87.1% | 0.0% |
| August | 90.3% | – | – |
| September | 96.7% | – | – |
| October | 83.9% | – | in progress |
| November | 89.7% | – | – |
| December | 93.3% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | – | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | – | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
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 98.0% 432
- Cancelled 2.0% 9
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PDX SEA Portland International Airport – Seattle–Tacoma International Airport | 208 | 6.3 min | 90.5% | 242 |
| SFO SAN San Francisco International Airport – San Diego International Airport | 719 | 18.3 min | 65.4% | 57 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 66.7% | 0 |
| November 2024 | 35 | 34 | 58.8% | 1 |
| December 2024 | 23 | 20 | 70.0% | 3 |
| January 2025 | 20 | 19 | 63.2% | 1 |
| February 2025 | 17 | 16 | 75.0% | 1 |
| March 2025 | 13 | 13 | 76.9% | 0 |
| May 2025 | 17 | 17 | 100.0% | 0 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 31 | 31 | 87.1% | 0 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 30 | 29 | 89.7% | 1 |
| December 2025 | 31 | 30 | 93.3% | 1 |
| February 2026 | 7 | 7 | 28.6% | 0 |
| March 2026 | 7 | 7 | 85.7% | 0 |
| April 2026 | 8 | 7 | 71.4% | 1 |
| May 2026 | 10 | 10 | 100.0% | 0 |
| June 2026 | 21 | 21 | 90.5% | 0 |
| July 2026 | 31 | 31 | 87.1% | 0 |