American Airlines ORD to BUF on-time performance
American Airlines nonstop flights from Chicago to Buffalo · Aug 2025 – Jul 2026
On-time arrivals
60%
arrived < 15 min late
Cancelled
2.3%
11 flights
Avg arrival delay
35 min
84 min when late
Rank on route
#5 of 5
route average 71% on time
Key facts
- American Airlines flights on ORD to BUF arrived on time 60% of the time in Aug 2025 – Jul 2026.
- 2.3% were cancelled, and 18% arrived an hour or more late.
- That ranks #5 of 5 airlines on this route, which averaged 71% on time overall.
- The largest source of delay minutes was late-arriving aircraft (63%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft63%
- Airline (crew, maintenance, cleaning, fueling)20%
- Air traffic control & airport congestion9%
- Extreme weather8%
- Security0%
Other airlines on ORD to BUF
- United Airlines75% on time · 21 min avg delay
- SkyWest Airlines65% on time · 28 min avg delay
- Republic Airways76% on time · 19 min avg delay
- Envoy Air80% on time · 13 min avg delay
Full ORD to BUF comparison →
American Airlines on-time record across all routes →
476 American Airlines flights tracked on this route; 11 cancelled, 1 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.