Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Ontario via Atlanta: arrives on time 45%
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12:13 IAH → 15:23 ATLDL 1682 · Delta · 2h 10m · 76% on time, 1.5% cancelled
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1h 36m layover in Atlanta (ATL) · 45 min minimum on one ticket
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16:59 ATL → 18:30 ONTDL 2891 · Delta · 4h 31m · 50% on time, 0.0% cancelled
Total trip 8h 17m, scheduled departure to arrival (Ontario is 2 h behind Houston). Times are local. Both flew on 54 of the last 56 days.
Makes the connection91%The first flight arrived more than 51 minutes late on 9% of the days it flew: too late for the 45-minute minimum connection on a 1h 36m layover.
Arrives on time45%First flight not cancelled (1.5% are) × connection made (91%) × second flight not cancelled (0.0% are) and within 15 minutes (50%).
Total trip8h 17mIAH 12:13 to ONT 18:30, 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.