SJU (San Juan) to IAD (Washington) flights arrive on time 85% of the time. The most reliable airline on this route is United Airlines at 87%. The average delay is 61 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated August 2026.SJU → IAD
SJU (San Juan) to IAD (Washington)
SJU → IAD on-time performance by month
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This route is usually on time. About 85% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
United Airlines is significantly more reliable on this route at 87% on time vs Frontier Airlines at 72%.
Airline Comparison
United Airlines leads at 87% on time; Frontier Airlines trails at 72%.
Accurate?
Good to know
Departing from SJU
76% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. SJU has long runway queues.
TSA is currently ~28 min. Best time: 4 AM (about 8 min).
Arriving at IAD
82% on timeWhen flights into IAD are late, the average delay is 75 minutes. Build buffer if you have ground plans.
If connecting at IAD: TSA is ~12 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
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Flying out of SJU? We'll brief you.
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Data last updated August 2026. Source: Bureau of Transportation Statistics.