Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Houston via Denver: arrives on time 52%
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14:35 IAD → 16:29 DENUA 1126 · United · 3h 54m · 82% on time, 0.0% cancelled
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49m layover in Denver (DEN) · 45 min minimum on one ticket
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17:18 DEN → 20:55 IAHUA 1585 · United · 2h 37m · 74% on time, 0.0% cancelled
Total trip 7h 20m, scheduled departure to arrival (Houston is 1 h behind Dulles). Times are local. Both flew on 56 of the last 56 days.
Makes the connection70%The first flight arrived more than 4 minutes late on 30% of the days it flew: too late for the 45-minute minimum connection on a 49m layover.
Arrives on time52%First flight not cancelled (0.0% are) × connection made (70%) × second flight not cancelled (0.0% are) and within 15 minutes (74%).
Total trip7h 20mIAD 14:35 to IAH 20:55, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.