DEN (Denver) to SJU (San Juan) flights arrive on time 75% of the time. The most reliable airline on this route is United Airlines at 74%. The average delay is 45 minutes. Delays on this route are most often caused by air traffic and busy airspace.
Source: Bureau of Transportation Statistics. Updated March 2026.DEN → SJU
DEN (Denver) to SJU (San Juan)
DEN → SJU on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
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This route is delayed fairly often. About 75% of flights arrive on schedule.
Delays on this route are most often caused by air traffic and busy airspace.
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Good to know
Departing from DEN
78% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. DEN has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at SJU
75% 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 ~7 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.