Route Reliability
Detroit → CIU
DTW–CIU · 285 miles · Detroit Metropolitan Wayne County Airport to CIU Airport
- 74%
- Arrive within 15 minutes
- 19 min
- Average arrival delay
- 6.3%
- Cancelled
- 363
- Flights in the data
Data through May 2026.
Delta Air Lines is the only airline in this data on this route, arriving on time 74% of the time across 363 flights. No comparison to make.
What the data says
The 3–6 PM departure wins.
DTW–CIU flights departing between 3–6 PM arrived on time 79% of the time, versus 65% between 6–9 PM.
Sunday scaries are real for this one.
DTW–CIU flights arrived on time 83% of the time on Wednesdays and just 63% on Sundays. That gap is worth planning around.
Keep a backup plan handy.
This route was cancelled 6.3% of the time. Typical for U.S. flights is around 1–2%.
Trending in the right direction.
DTW–CIU flights arrived on time 71% of the time over the last three months in the data, compared with 58% in the three months before that.
The breakdown
- Mon71%(49 flights)
- Tue78%(50 flights)
- Wed83%(48 flights)
- Thu83%(48 flights)
- Fri64%(47 flights)
- Sat75%(47 flights)
- Sun63%(48 flights)
- 12–3 PM—(1 flights)
- 3–6 PM79%(203 flights)
- 6–9 PM65%(133 flights)
Jun 90% → May 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 30 |
| July 2025 | 77% | 30 |
| August 2025 | 81% | 31 |
| September 2025 | 80% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 75% | 28 |
| December 2025 | 75% | 28 |
| January 2026 | 54% | 26 |
| February 2026 | 46% | 24 |
| March 2026 | 65% | 23 |
| April 2026 | 73% | 26 |
| May 2026 | 73% | 30 |
Keep nerding
Based on 363 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.