Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Denver via Philadelphia: arrives on time 55%
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14:47 SJU → 18:58 PHLF9 1165 · Frontier · 4h 06m · 61% on time, 1.8% cancelled
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1h 39m layover in Philadelphia (PHL) · 45 min minimum on one ticket
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20:37 PHL → 23:04 DENF9 3339 · Frontier · 4h 27m · 67% on time, 3.0% cancelled
Total trip 10h 17m, scheduled departure to arrival (Denver is 2 h behind San Juan). Times are local. Both flew on 33 of the last 56 days.
Makes the connection87%The first flight arrived more than 54 minutes late on 13% of the days it flew: too late for the 45-minute minimum connection on a 1h 39m layover.
Arrives on time55%First flight not cancelled (1.8% are) × connection made (87%) × second flight not cancelled (3.0% are) and within 15 minutes (67%).
Total trip10h 17mSJU 14:47 to DEN 23:04, 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.