OO4157
OO4157 (SkyWest Airlines) is a multi-stop service on 6 routes, busiest Detroit to Grand Rapids. Of 146 departures recorded from December 2024 to July 2026, 74.8% left on time, according to the US BTS.
- On-time departures74.8%of 146 flights
- Average delay25.0 min
- July 20266
- Cancelled2.1%
- Legs flown under this number6
Recorded departures by month
Short series — OO4157 has only 8 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods7 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 5 | 27 | ▲ 440.0% |
| February | – | 45 | – |
| March | – | 14 | – |
| April | – | – | – |
| May | – | 25 | – |
| June | – | 12 | – |
| July | – | 6 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · December 2024 → July 2026
On-time departures by month
Short series — OO4157 has only 8 months so far. Enough to show the level now, not enough to read a trend.
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 periods7 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 59.3% | ▼ 40.7% |
| February | – | 79.1% | – |
| March | – | 42.9% | – |
| April | – | – | – |
| May | – | 84.0% | – |
| June | – | 91.7% | – |
| July | – | 100.0% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · December 2024 → July 2026
Average departure delay by month
Short series — OO4157 has only 8 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · December 2024 → July 2026
Cancelled departures by month
Short series — OO4157 has only 8 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods7 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 2 | – |
| March | – | 0 | – |
| April | – | – | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · December 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 97.9% 143
- Cancelled 2.1% 3
Share of all recorded flights in the period, all legs. · Dec 20, 2024 → Jul 25, 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 |
|---|---|---|---|---|
| DTW GRR Detroit Metropolitan Wayne County Airport – Gerald R. Ford International Airport | 193 | 42.6 min | 63.9% | 62 |
| BOI SEA Boise Air Terminal/Gowen Field – Seattle–Tacoma International Airport | 641 | -0.6 min | 87.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| December 2024 | 12 | 11 | 72.7% | 1 |
| January 2025 | 5 | 5 | 100.0% | 0 |
| January 2026 | 27 | 27 | 59.3% | 0 |
| February 2026 | 45 | 43 | 79.1% | 2 |
| March 2026 | 14 | 14 | 42.9% | 0 |
| May 2026 | 25 | 25 | 84.0% | 0 |
| June 2026 | 12 | 12 | 91.7% | 0 |
| July 2026 | 6 | 6 | 100.0% | 0 |