How often are SEA to ORD flights on time?

Flights from Seattle (SEA) to Chicago (ORD) arrive on time 87% of the time across 31,080 flights of official data.

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

United Airlines has the best on-time record on this route at 90% across 8,782 flights.

Route reliability

Flights from Seattle to Chicago arrive on time 87% of the time across 31,080 flights. Here’s how each airline really performs.

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On-time rate

31,080 flights

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

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

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