SJU (San Juan) to IAD (Washington) flights arrive on time 84% of the time. The most reliable airline on this route is United Airlines at 85%. The average delay is 67 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.SJU → IAD
SJU (San Juan) to IAD (Washington)
SJU → IAD on-time performance by month
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This route is on time most of the time. About 84% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
United Airlines edges out Frontier Airlines on this route — 85% vs 77% on time.
Airline Comparison
United Airlines leads at 85% on time; Frontier Airlines trails at 77%.
Accurate?
Good to know
Departing from SJU
75% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. SJU has long runway queues.
TSA is currently ~15 min. Best time: 4 AM (about 7 min).
Arriving at IAD
83% on timeWhen flights into IAD are late, the average delay is 74 minutes. Build buffer if you have ground plans.
If connecting at IAD: TSA is ~5 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.