Chippewa County International (CIU) Delays and On-Time Departures
Sault Ste. Marie, MI · ranked 194th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Sault Ste. Marie (CIU) had 822 scheduled departures and 79.8% of them left on time (US average 77.4%).
That ranks 194th of 333 US airports tracked on this site, with 6.0% of departures cancelled.
Over 24 months, Wednesday was the most reliable day (84% on time) and December the worst month (64%).
Best time of day to fly out of Sault Ste. Marie (CIU)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 85.3% | 3.4% | 148 |
| 7am–8am | 79.0% | 3.1% | 571 |
| 11am–12pm | Limited data | 10 | |
| 12pm–1pm | 84.2% | 0.9% | 115 |
| 1pm–2pm | 83.7% | 0.0% | 153 |
| 3pm–4pm | 75.3% | 4.2% | 453 |
| 4pm–5pm | 79.1% | 7.4% | 176 |
Airlines at CIU ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| SkyWest Airlines | 79.8% | 78.6% | 6.0% | 822 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of CIU
On-time departures by day, 24 months.
Best month to fly out of CIU
On-time departures by month, 24 months.
Holiday travel at Sault Ste. Marie (CIU)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 25 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 63.6% | -17.1 pts | 22.8% | 57 |
| Summer peak (Jun 15 - Aug 15) | 78.3% | -2.4 pts | 2.4% | 340 |
| All other days | 80.7% | — | 3.0% | 1,204 |
Monthly on-time departure trend at CIU
On-time departure % each month, with the 12-month US average for reference.
Routes from Sault Ste. Marie (CIU)
Every route from CIU with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| CIU → Detroit (DTW) | 83.8% | 6.3% | 363 |
| CIU → Minneapolis (MSP) | 79.2% | 6.0% | 348 |