Chicago, IL → Buffalo, NY flight delays
ORD → BUF · all airlines · 217 flights · May 2026 · source: US BTS
This route is delayed
28%of the time, by +76 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
72%
Delayed 3h+
1.4%
Cancelled
1.4%
Avg when late
+76m
Best & worst day to fly
Most on-time
Saturday
delayed 17%
Worst
Sunday
delayed 37%
Which airline is most punctual on ORD → BUF?
Republicdelayed 20%
Uniteddelayed 25%
Americandelayed 33%
Frequently asked
How often is the Chicago, IL to Buffalo, NY flight delayed?
About 28% of ORD → BUF flights arrive late (15+ minutes), by an average of 76 minutes when they do, based on 217 flights in May 2026.
Which airline is most punctual on ORD → BUF?
Republic, delayed 20% of the time — the best of the 3 airlines flying this route.
What is the best day to fly ORD → BUF?
Saturday is the most on-time (delayed 17%), while Sunday is the worst (delayed 37%).
Airport overviews