Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dallas → Houston via Atlanta: arrives on time 53%
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15:59 DAL → 19:14 ATLDL 512 · Delta · 2h 15m · 72% on time, 1.4% cancelled
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1h 07m layover in Atlanta (ATL) · 45 min minimum on one ticket
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20:21 ATL → 21:34 IAHDL 1284 · Delta · 2h 13m · 73% on time, 2.0% cancelled
Total trip 5h 35m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.
Makes the connection75%The first flight arrived more than 22 minutes late on 25% of the days it flew: too late for the 45-minute minimum connection on a 1h 07m layover.
Arrives on time53%First flight not cancelled (1.4% are) × connection made (75%) × second flight not cancelled (2.0% are) and within 15 minutes (73%).
Total trip5h 35mDAL 15:59 to IAH 21:34, 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.