No delays reported for OO 4278 (DTW → CIU) as of 6:46 PM ET. It arrived on time 75.6% of the time in June-August 2026. When it was late, the average delay was 1h 50m. 2.2% of flights were cancelled. Right now there are no reported delays at DTW, CIU.
Looks on time
Should be in the air from DTW, scheduled to land at CIU at 7:40 PM local time.
Cancellation risk: Low 2.2% of its flights were cancelled in June-August 2026.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check SkyWest for official times.
Before you fly
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| DTW → CIU Detroit, MI to Sault Ste. Marie, MI | 6:15 PM → 7:40 PM | 76% |
Local times. Schedules change; check your booking.
How reliable is OO 4278?
| Arrived on time (within 15 min) | 75.6% |
| Average delay when late | 110 min |
| Cancelled | 2.2% |
| Diverted | 0% |
| Flights tracked | 92 |
Best and worst days to fly OO 4278
OO 4278 was most reliable on Tuesdays (100% on time) and least reliable on Wednesdays (54%).
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by SkyWest to the Department of Transportation.
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the SkyWest app.
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is OO 4278 delayed today?
Right now there are no reported delays at DTW, CIU. Checked 6:46 PM ET. For this flight's gate and exact status, check the SkyWest app.
Is OO 4278 usually on time?
OO 4278 arrived within 15 minutes of schedule 75.6% of the time in June-August 2026, with an average delay of 110 minutes when late.
How often is OO 4278 cancelled?
2.2% of OO 4278 flights were cancelled in June-August 2026.