PHL (Philadelphia) to SJU (San Juan) flights arrive on time 64% of the time. The most reliable airline on this route is Spirit Airlines at 71%. The average delay is 74 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.PHL → SJU
PHL (Philadelphia) to SJU (San Juan)
PHL → SJU on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is frequently delayed. About 64% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Spirit Airlines edges out Frontier Airlines on this route — 71% vs 60% on time.
Airline Comparison
Spirit Airlines leads at 71% on time; Frontier Airlines trails at 60%.
Accurate?
Good to know
Departing from PHL
79% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. PHL has long runway queues.
TSA is currently ~31 min. Best time: 4 AM (about 5 min).
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 ~19 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated May 2026. Source: Bureau of Transportation Statistics.