BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
AIRLINE × ROUTE REPORT
ORD→BUF

United Airlines Chicago, IL (ORD) to Buffalo, NY (BUF) reliability

Among 612 scheduled United Airlines flights from ORD to BUF, 72.9% arrived on time, 17.0% arrived at least 30 minutes late, and 1.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: United Airlines (UA) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
72.9%arrived on time
17.0%30+ min late
1.1%cancelled
612scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late17.0%
60+ minutes late10.8%
Cancelled1.1%
Average arrival+15.6 mincompleted flights

What did United Airlines ORD to BUF record?

United Airlines completed 98.7% of its scheduled reportable ORD to BUF flights in the observation window. 72.9% of all scheduled flights arrived less than 15 minutes late, while 10.8% arrived at least an hour late.

What were United Airlines ORD to BUF disruption rates?

For United Airlines ORD-to-BUF flights, 17.0% arrived at least 30 minutes late, 1.1% were cancelled, and 0.2% were diverted.

Compare all airlines on this route

What was the United Airlines ORD to BUF scheduled cohort?

The United Airlines ORD-to-BUF cohort contained 612 scheduled flights; 604 completed, 7 were cancelled, and 1 were diverted.

Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.