EWR (Newark) to SJU (San Juan) flights arrive on time 70% of the time. The most reliable airline on this route is JetBlue Airways at 76%. The average delay is 81 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated March 2026.EWR → SJU
EWR (Newark) to SJU (San Juan)
EWR → SJU on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is delayed fairly often. About 70% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
JetBlue Airways is significantly more reliable on this route at 76% on time vs Frontier Airlines at 61%.
Airline Comparison
JetBlue Airways leads at 76% on time; Frontier Airlines trails at 61%.
Accurate?
Good to know
Departing from EWR
77% on timeExpect ~21 min sitting on the taxiway after your gate pushes back. EWR has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
EWR cancels 3.1% of flights — higher than average. Have a backup plan.
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.
Flight cancelled or delayed?
Check what JetBlue Airways owes you — refund rights, action plan, complaint email. Free.
Free flight briefing
Know before you go
Flying EWR → SJU? We'll brief you before takeoff.
Delay riskDOT stats + live data
TSA waitCurrent checkpoint lines
WeatherBoth airports
Gate & terminalLive updates
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated March 2026. Source: Bureau of Transportation Statistics.