OO4166
OO4166 (SkyWest Airlines) is a multi-stop service on 3 routes, busiest Detroit to Appleton. Of 1,057 departures recorded from October 2024 to July 2026, 71.7% left on time, according to the US BTS.
- On-time departures71.7%of 1,057 flights
- Average delay21.0 min
- July 202662▲ 10.7%vs July 2025
- Cancelled1.0%
- Legs flown under this number3
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 | 54 | 32 | ▼ 40.7% |
| February | 44 | 20 | ▼ 54.5% |
| March | 52 | 48 | ▼ 7.7% |
| April | 52 | 60 | ▲ 15.4% |
| May | 60 | 62 | ▲ 3.3% |
| June | 58 | 60 | ▲ 3.4% |
| July | 56 | 62 | ▲ 10.7% |
| August | 60 | – | – |
| September | 60 | – | – |
| October | 12 | – | in progress |
| November | 22 | – | – |
| December | 37 | – | – |
| Year to date (Jan–Jul) | 376 | 344 | ▼ 8.5% |
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 | 74.1% | 53.1% | ▼ 28.3% |
| February | 68.2% | 20.0% | ▼ 70.7% |
| March | 73.5% | 50.0% | ▼ 31.9% |
| April | 88.5% | 81.7% | ▼ 7.7% |
| May | 80.0% | 77.4% | ▼ 3.2% |
| June | 58.6% | 82.8% | ▲ 41.2% |
| July | 42.9% | 66.1% | ▲ 54.3% |
| August | 93.3% | – | – |
| September | 95.0% | – | – |
| October | 91.7% | – | in progress |
| November | 77.3% | – | – |
| December | 56.8% | – | – |
| Year-to-date average (Jan–Jul) | 69.4% | 61.6% | ▼ 11.2% |
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 | 3 | 2 | ▼ 33.3% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 4 | ▲ 33.3% |
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 99.0% 1,046
- Cancelled 1.0% 11
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DTW ATW Detroit Metropolitan Wayne County Airport – Appleton International Airport | 476 | 21.3 min | 70.6% | 518 |
| ATW DTW Appleton International Airport – Detroit Metropolitan Wayne County Airport | 476 | 20.8 min | 72.8% | 498 |
| DEN AUS Denver International Airport – Austin Bergstrom International Airport | 1,249 | 18.7 min | 73.2% | 41 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 36 | 36 | 75.0% | 0 |
| November 2024 | 52 | 52 | 73.1% | 0 |
| December 2024 | 58 | 54 | 64.8% | 4 |
| January 2025 | 54 | 54 | 74.1% | 0 |
| February 2025 | 44 | 44 | 68.2% | 0 |
| March 2025 | 52 | 49 | 73.5% | 3 |
| April 2025 | 52 | 52 | 88.5% | 0 |
| May 2025 | 60 | 60 | 80.0% | 0 |
| June 2025 | 58 | 58 | 58.6% | 0 |
| July 2025 | 56 | 56 | 42.9% | 0 |
| August 2025 | 60 | 60 | 93.3% | 0 |
| September 2025 | 60 | 60 | 95.0% | 0 |
| October 2025 | 12 | 12 | 91.7% | 0 |
| November 2025 | 22 | 22 | 77.3% | 0 |
| December 2025 | 37 | 37 | 56.8% | 0 |
| January 2026 | 32 | 32 | 53.1% | 0 |
| February 2026 | 20 | 20 | 20.0% | 0 |
| March 2026 | 48 | 46 | 50.0% | 2 |
| April 2026 | 60 | 60 | 81.7% | 0 |
| May 2026 | 62 | 62 | 77.4% | 0 |
| June 2026 | 60 | 58 | 82.8% | 2 |
| July 2026 | 62 | 62 | 66.1% | 0 |