OO3559
OO3559 (SkyWest Airlines) is a multi-stop service on 7 routes, busiest Seattle to San Jose. Of 631 departures recorded from April 2025 to July 2026, 89.4% left on time, according to the US BTS.
- On-time departures89.4%of 631 flights
- Average delay3.6 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.0%
- Legs flown under this number7
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | 17 | 36 | ▲ 111.8% |
| May | 56 | 12 | ▼ 78.6% |
| June | 60 | 48 | ▼ 20.0% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 60 | – | in progress |
| November | 58 | – | – |
| December | 38 | – | – |
according to the US BTS · April 2025 → 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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | 88.2% | 100.0% | ▲ 13.3% |
| May | 91.1% | 83.3% | ▼ 8.5% |
| June | 96.7% | 85.4% | ▼ 11.6% |
| July | 95.2% | 59.7% | ▼ 37.3% |
| August | 100.0% | – | – |
| September | 90.0% | – | – |
| October | 85.0% | – | in progress |
| November | 94.8% | – | – |
| December | 92.1% | – | – |
according to the US BTS · April 2025 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · April 2025 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · April 2025 → 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 100.0% 631
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Apr 14, 2025 → 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 |
|---|---|---|---|---|
| SJC SEA Mineta San Jose International Airport – Seattle–Tacoma International Airport | 1,122 | -0.9 min | 93.3% | 193 |
| SEA SJC Seattle–Tacoma International Airport – Mineta San Jose International Airport | 1,122 | -3.2 min | 93.3% | 193 |
| DTW CLE Detroit Metropolitan Wayne County Airport – Cleveland Hopkins International Airport | 153 | 13.6 min | 78.5% | 79 |
| CLE DTW Cleveland Hopkins International Airport – Detroit Metropolitan Wayne County Airport | 153 | 21.2 min | 78.5% | 79 |
| MKE DTW General Mitchell International Airport – Detroit Metropolitan Wayne County Airport | 381 | -3.2 min | 93.8% | 32 |
| DTW MKE Detroit Metropolitan Wayne County Airport – General Mitchell International Airport | 381 | -3.0 min | 96.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| April 2025 | 17 | 17 | 88.2% | 0 |
| May 2025 | 56 | 56 | 91.1% | 0 |
| June 2025 | 60 | 60 | 96.7% | 0 |
| July 2025 | 62 | 62 | 95.2% | 0 |
| August 2025 | 62 | 62 | 100.0% | 0 |
| September 2025 | 60 | 60 | 90.0% | 0 |
| October 2025 | 60 | 60 | 85.0% | 0 |
| November 2025 | 58 | 58 | 94.8% | 0 |
| December 2025 | 38 | 38 | 92.1% | 0 |
| April 2026 | 36 | 36 | 100.0% | 0 |
| May 2026 | 12 | 12 | 83.3% | 0 |
| June 2026 | 48 | 48 | 85.4% | 0 |
| July 2026 | 62 | 62 | 59.7% | 0 |