OO4027
OO4027 (SkyWest Airlines) is a multi-stop service on 6 routes, busiest Seattle to Ontario. Of 673 departures recorded from October 2024 to July 2026, 88.7% left on time, according to the US BTS.
- On-time departures88.7%of 673 flights
- Average delay3.4 min
- July 202646▲ 48.4%vs July 2025
- Cancelled0.2%
- Legs flown under this number6
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 | 31 | 30 | ▼ 3.2% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 28 | ▼ 6.7% |
| May | 31 | 30 | ▼ 3.2% |
| June | 30 | 40 | ▲ 33.3% |
| July | 31 | 46 | ▲ 48.4% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 28 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 212 | 233 | ▲ 9.9% |
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 | 90.3% | 96.7% | ▲ 7.0% |
| February | 85.7% | 85.7% | 0.0% |
| March | 96.8% | 86.7% | ▼ 10.4% |
| April | 86.7% | 89.3% | ▲ 3.0% |
| May | 93.6% | 93.3% | ▼ 0.2% |
| June | 80.0% | 82.5% | ▲ 3.1% |
| July | 83.9% | 82.6% | ▼ 1.5% |
| August | 93.6% | – | – |
| September | 80.0% | – | – |
| October | 87.1% | – | in progress |
| November | 96.4% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 88.1% | 88.1% | 0.0% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 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 99.9% 672
- Cancelled 0.1% 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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SEA ONT Seattle–Tacoma International Airport – Ontario International Airport | 1,540 | 2.1 min | 89.4% | 540 |
| IND AUS Indianapolis International Airport – Austin Bergstrom International Airport | 1,479 | 12.5 min | 81.4% | 43 |
| AUS IND Austin Bergstrom International Airport – Indianapolis International Airport | 1,479 | 7.7 min | 81.1% | 37 |
| FSD MSP Sioux Falls Regional Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 315 | 11.6 min | 93.6% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 29 | 29 | 86.2% | 0 |
| December 2024 | 31 | 31 | 87.1% | 0 |
| January 2025 | 31 | 31 | 90.3% | 0 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 31 | 93.6% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 31 | 31 | 83.9% | 0 |
| August 2025 | 31 | 31 | 93.6% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 31 | 31 | 87.1% | 0 |
| November 2025 | 28 | 28 | 96.4% | 0 |
| December 2025 | 28 | 28 | 100.0% | 0 |
| January 2026 | 30 | 30 | 96.7% | 0 |
| February 2026 | 28 | 28 | 85.7% | 0 |
| March 2026 | 31 | 30 | 86.7% | 1 |
| April 2026 | 28 | 28 | 89.3% | 0 |
| May 2026 | 30 | 30 | 93.3% | 0 |
| June 2026 | 40 | 40 | 82.5% | 0 |
| July 2026 | 46 | 46 | 82.6% | 0 |