DFW (Dallas) to SJU (San Juan) flights arrive on time 70% of the time. The most reliable airline on this route is Spirit Airlines at 76%. The average delay is 68 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.DFW → SJU
DFW (Dallas) to SJU (San Juan)
DFW → SJU on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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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?
Spirit Airlines is significantly more reliable on this route at 76% on time vs Frontier Airlines at 49%.
Airline Comparison
Spirit Airlines leads at 76% on time; Frontier Airlines trails at 49%.
Accurate?
Good to know
Departing from DFW
77% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. DFW has long runway queues.
TSA is currently ~23 min. Best time: 4 AM (about 5 min).
DFW cancels 2.5% 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 ~19 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
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Data last updated May 2026. Source: Bureau of Transportation Statistics.