How often are ORD to BUF flights on time?

Flights from Chicago (ORD) to Buffalo (BUF) arrive on time 83% of the time across 13,292 flights of official data.

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

United Airlines has the best on-time record on this route at 84% across 7,024 flights.

Route reliability

Flights from Chicago to Buffalo arrive on time 83% of the time across 13,292 flights. Here’s how each airline really performs.

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On-time rate

13,292 flights

Airline	On-time	Flights
United Airlines	84%	7,024
American Airlines	82%	6,268

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

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

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