BUF (Buffalo) to SJU (San Juan) flights arrive on time 77% of the time. The most reliable airline on this route is JetBlue Airways at 77%. The average delay is 42 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated July 2026.BUF → SJU
BUF (Buffalo) to SJU (San Juan)
BUF → SJU on-time performance by month
26
JanFebMarAprMayJunJulAugSepOctNovDec
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This route is on time most of the time. About 77% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Accurate?
Good to know
Departing from BUF
77% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. BUF has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
BUF cancels 2.1% of flights — higher than average. Have a backup plan.
Arriving at SJU
76% on timeWhen flights into SJU are late, the average delay is 75 minutes. Build buffer if you have ground plans.
If connecting at SJU: TSA is ~14 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated July 2026. Source: Bureau of Transportation Statistics.