Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Washington → Ontario via Houston: arrives on time 55%
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16:59 DCA → 19:27 IAHUA 1785 · United · 3h 28m · 66% on time, 0.7% cancelled
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1h 04m layover in Houston (IAH) · 45 min minimum on one ticket
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20:31 IAH → 21:55 ONTUA 1563 · United · 3h 24m · 79% on time, 0.0% cancelled
Total trip 7h 56m, scheduled departure to arrival (Ontario is 3 h behind Washington). Times are local. Both flew on 48 of the last 56 days.
Makes the connection70%The first flight arrived more than 19 minutes late on 30% of the days it flew: too late for the 45-minute minimum connection on a 1h 04m layover.
Arrives on time55%First flight not cancelled (0.7% are) × connection made (70%) × second flight not cancelled (0.0% are) and within 15 minutes (79%).
Total trip7h 56mDCA 16:59 to ONT 21:55, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.