How often are ORD to SEA flights on time?

Flights from Chicago (ORD) to Seattle (SEA) arrive on time 85% of the time across 29,902 flights of official data.

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

United Airlines has the best on-time record on this route at 87% across 8,483 flights.

Route reliability

Flights from Chicago to Seattle arrive on time 85% of the time across 29,902 flights. Here’s how each airline really performs.

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On-time rate

29,902 flights

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

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Are Some Airlines Really More Reliable Than Others?

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