Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Denver → San Juan via Miami: arrives on time 87%
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23:40 DEN → 05:51 MIAF9 1280 · Frontier · 4h 11m · 77% on time, 0.4% cancelled
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2h 29m layover in Miami (MIA) · 90 min minimum on separate tickets
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08:20 MIA → 11:04 SJU +1 dayAA 2582 · American · 2h 44m · 94% on time, 0.0% cancelled
Total trip 9h 24m, scheduled departure to arrival (San Juan is 2 h ahead of Denver). Times are local. Both flew on 55 of the last 56 days.
Makes the connection93%The first flight arrived more than 59 minutes late on 7% of the days it flew: too late for the 90-minute minimum connection on a 2h 29m layover.
Arrives on time87%First flight not cancelled (0.4% are) × connection made (93%) × second flight not cancelled (0.0% are) and within 15 minutes (94%).
Total trip9h 24mDEN 23:40 to SJU 11:04, layover included
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.