Question : How often is the Washington Dulles International Airport (IAD) to Willow Run Airport (YIP) route delayed?
Answer : The Dulles to Detroit route has a 50% on-time rate, ranking in the bottom half of the world in getting their passengers to their destinations on schedule. If a flight is late, expect an average of 25 minutes added to your flight time.
Question : In terms of overall promptness, how does IAD to YIP rank compared to the rest of the world?
Answer : IAD to YIP currently scores 2 out of a possible 5 stars in promptness. This score combines both the number of delayed flights and total delay minutes. With 2 stars, you should feel rather worried about getting to Detroit on time.