How often are ORD to TYS flights on time?

Flights from Chicago (ORD) to Knoxville (TYS) arrive on time 80% of the time across 12,991 flights of official data.

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

United Airlines has the best on-time record on this route at 81% across 7,696 flights.

Route reliability

Flights from Chicago to Knoxville arrive on time 80% of the time across 12,991 flights. Here’s how each airline really performs.

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On-time rate

12,991 flights

Airline	On-time	Flights
United Airlines	81%	7,696
American Airlines	79%	5,295

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

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