SJU (San Juan) to JFK (New York) flights arrive on time 81% of the time. The most reliable airline on this route is Delta Air Lines at 89%. The average delay is 80 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.SJU → JFK
SJU (San Juan) to JFK (New York)
SJU → JFK on-time performance by month
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This route is on time most of the time. About 81% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Delta Air Lines edges out Frontier Airlines on this route — 89% vs 76% on time.
Airline Comparison
Delta Air Lines leads at 89% on time; Frontier Airlines trails at 76%.
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 JFK
78% on timeWhen flights into JFK are late, the average delay is 78 minutes. Build buffer if you have ground plans.
If connecting at JFK: TSA is ~31 min right now. Allow at least 60 minutes for a domestic connection.
JFK has a 2.4% cancellation rate — keep the airline app handy for rebooking.
Flight cancelled or delayed?
Check what Delta Air Lines owes you — refund rights, action plan, complaint email. Free.
Flying out of SJU? 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 August 2026. Source: Bureau of Transportation Statistics.