BUF (Buffalo) to ORD (Chicago) flights arrive on time 79% of the time. The most reliable airline on this route is American Airlines at 79%. The average delay is 83 minutes. Delays on this route are most often caused by air traffic and busy airspace.
Source: Bureau of Transportation Statistics. Updated May 2026.BUF → ORD
BUF (Buffalo) to ORD (Chicago)
BUF → ORD on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 79% of flights arrive on schedule.
Delays on this route are most often caused by air traffic and busy airspace.
Accurate?
Airlines are roughly equal on this route — American Airlines leads slightly at 79% vs SkyWest Airlines at 75%.
Airline Comparison
American Airlines leads at 79% on time; SkyWest Airlines trails at 75%.
Accurate?
Good to know
Departing from BUF
79% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. BUF has long runway queues.
TSA is currently ~12 min. Best time: 4 AM (about 5 min).
BUF cancels 2.7% of flights — higher than average. Have a backup plan.
Arriving at ORD
80% on timeWhen flights into ORD are late, the average delay is 76 minutes. Build buffer if you have ground plans.
If connecting at ORD: TSA is ~34 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
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Data last updated May 2026. Source: Bureau of Transportation Statistics.