Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Charleston → Houston via Dulles: arrives on time 42%
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19:46 CHS → 21:30 IADUA 4322 · United, flown by CommuteAir · 1h 44m · 59% on time, 8.6% cancelled
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50m layover in Dulles (IAD) · 45 min minimum on one ticket
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22:20 IAD → 00:45 IAH +1 dayUA 1986 · United · 3h 25m · 81% on time, 0.0% cancelled
Total trip 5h 59m, scheduled departure to arrival (Houston is 1 h behind Charleston). Times are local. Both flew on 35 of the last 56 days.
Makes the connection56%The first flight arrived more than 5 minutes late on 44% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time42%First flight not cancelled (8.6% are) × connection made (56%) × second flight not cancelled (0.0% are) and within 15 minutes (81%).
Total trip5h 59mCHS 19:46 to IAH 00:45, 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.