Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Charleston via Atlanta: arrives on time 77%
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08:05 IAH → 11:09 ATLDL 644 · Delta · 2h 04m · 89% on time, 2.2% cancelled
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1h 20m layover in Atlanta (ATL) · 45 min minimum on one ticket
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12:29 ATL → 13:41 CHSDL 2179 · Delta · 1h 12m · 87% on time, 2.5% cancelled
Total trip 4h 36m, scheduled departure to arrival (Charleston is 1 h ahead of Houston). Times are local. Both flew on 46 of the last 56 days.
Makes the connection93%The first flight arrived more than 35 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 20m layover.
Arrives on time77%First flight not cancelled (2.2% are) × connection made (93%) × second flight not cancelled (2.5% are) and within 15 minutes (87%).
Total trip4h 36mIAH 08:05 to CHS 13:41, 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.