BWI (Baltimore) to SJU (San Juan) flights arrive on time 71% of the time. The most reliable airline on this route is Spirit Airlines at 75%. The average delay is 65 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.BWI → SJU
BWI (Baltimore) to SJU (San Juan)
BWI → SJU on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is delayed fairly often. About 71% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Spirit Airlines is significantly more reliable on this route at 75% on time vs Frontier Airlines at 51%.
Airline Comparison
Spirit Airlines leads at 75% on time; Frontier Airlines trails at 51%.
Accurate?
Good to know
Departing from BWI
78% on timeTSA is currently ~5 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 ~7 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.