How often are IAD to DTW flights on time?

Flights from Washington (IAD) to Detroit (DTW) arrive on time 86% of the time across 13,792 flights of official data.

Which airline is most reliable on the IAD to DTW route?

Delta Air Lines has the best on-time record on this route at 87% across 7,834 flights.

Route reliability

Flights from Washington to Detroit arrive on time 86% of the time across 13,792 flights. Here’s how each airline really performs.

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On-time rate

13,792 flights

Airline	On-time	Flights
Delta Air Lines	87%	7,834
United Airlines	86%	5,958

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg DTW → IAD.

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Score real IAD–DTW flights on reliability, weather, and connection safety — not just price.

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