Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Juan → Denver via Dulles: arrives on time 78%
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16:55 SJU → 20:56 IADUA 2024 · United · 4h 01m · 86% on time, 0.6% cancelled
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1h 27m layover in Dulles (IAD) · 45 min minimum on one ticket
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22:23 IAD → 00:30 DEN +1 dayUA 495 · United · 4h 07m · 84% on time, 0.3% cancelled
Total trip 9h 35m, scheduled departure to arrival (Denver is 2 h behind San Juan). Times are local. Both flew on 56 of the last 56 days.
Makes the connection94%The first flight arrived more than 42 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 27m layover.
Arrives on time78%First flight not cancelled (0.6% are) × connection made (94%) × second flight not cancelled (0.3% are) and within 15 minutes (84%).
Total trip9h 35mSJU 16:55 to DEN 00:30, 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.