How often are SEA to DTW flights on time?

Flights from Seattle (SEA) to Detroit (DTW) arrive on time 90% of the time across 12,332 flights of official data.

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

Delta Air Lines has the best on-time record on this route at 91% across 9,468 flights.

Route reliability

Flights from Seattle to Detroit arrive on time 90% of the time across 12,332 flights. Here’s how each airline really performs.

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On-time rate

12,332 flights

Airline	On-time	Flights
Delta Air Lines	91%	9,468
Alaska Airlines	87%	2,864

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

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