Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Houston via Atlanta: arrives on time 74%
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10:21 IAD → 12:05 ATLDL 1324 · Delta · 1h 48m · 85% on time, 4.3% cancelled
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3h 06m layover in Atlanta (ATL) · 45 min minimum on one ticket
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15:11 ATL → 16:23 HOUDL 2381 · Delta · 2h 14m · 81% on time, 2.4% cancelled
Total trip 7h 04m, scheduled departure to arrival (Houston is 1 h behind Dulles). Times are local. Both flew on 55 of the last 56 days.
Makes the connection97%The first flight arrived more than 141 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 3h 06m layover.
Arrives on time74%First flight not cancelled (4.3% are) × connection made (97%) × second flight not cancelled (2.4% are) and within 15 minutes (81%).
Total trip7h 04mIAD 10:21 to HOU 16:23, 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.