ORD (Chicago) to SJU (San Juan) flights arrive on time 79% of the time. The most reliable airline on this route is United Airlines at 82%. The average delay is 65 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated October 2026.ORD → SJU
ORD (Chicago) to SJU (San Juan)
ORD → SJU on-time performance by month
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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 the airline (crew, maintenance, or boarding).
Accurate?
United Airlines edges out Frontier Airlines on this route — 82% vs 68% on time.
Airline Comparison
United Airlines leads at 82% on time; Frontier Airlines trails at 68%.
Accurate?
Good to know
Departing from ORD
77% on timeExpect ~22 min sitting on the taxiway after your gate pushes back. ORD has long runway queues.
TSA is currently ~10 min. Best time: 4 AM (about 5 min).
Arriving at SJU
75% on timeWhen flights into SJU are late, the average delay is 76 minutes. Build buffer if you have ground plans.
If connecting at SJU: TSA is ~15 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what United Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of ORD? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated October 2026. Source: Bureau of Transportation Statistics.