Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Houston via San Diego: arrives on time 74%
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08:26 IAD → 10:49 SANUA 1930 · United · 5h 23m · 94% on time, 0.9% cancelled
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1h 09m layover in San Diego (SAN) · 45 min minimum on one ticket
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11:58 SAN → 17:25 IAHUA 2237 · United · 3h 27m · 79% on time, 0.3% cancelled
Total trip 9h 59m, scheduled departure to arrival (Houston is 1 h behind Dulles). Times are local. Both flew on 55 of the last 56 days.
Makes the connection95%The first flight arrived more than 24 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 1h 09m layover.
Arrives on time74%First flight not cancelled (0.9% are) × connection made (95%) × second flight not cancelled (0.3% are) and within 15 minutes (79%).
Total trip9h 59mIAD 08:26 to IAH 17:25, 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.