Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Ontario via Chicago: arrives on time 53%
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14:30 IAH → 17:22 ORDUA 699 · United · 2h 52m · 68% on time, 0.0% cancelled
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2h 56m layover in Chicago (ORD) · 45 min minimum on one ticket
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20:18 ORD → 22:51 ONTUA 658 · United · 4h 33m · 60% on time, 2.5% cancelled
Total trip 10h 21m, scheduled departure to arrival (Ontario is 2 h behind Houston). Times are local. Both flew on 37 of the last 56 days.
Makes the connection92%The first flight arrived more than 131 minutes late on 8% of the days it flew: too late for the 45-minute minimum connection on a 2h 56m layover.
Arrives on time53%First flight not cancelled (0.0% are) × connection made (92%) × second flight not cancelled (2.5% are) and within 15 minutes (60%).
Total trip10h 21mIAH 14:30 to ONT 22:51, 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.