Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Ontario → Dulles via Denver: arrives on time 70%
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13:18 ONT → 16:38 DENUA 1263 · United · 2h 20m · 84% on time, 0.5% cancelled
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2h 35m layover in Denver (DEN) · 45 min minimum on one ticket
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19:13 DEN → 00:45 IAD +1 dayUA 1412 · United · 3h 32m · 73% on time, 0.0% cancelled
Total trip 8h 27m, scheduled departure to arrival (Dulles is 3 h ahead of Ontario). Times are local. Both flew on 22 of the last 56 days.
Makes the connection97%The first flight arrived more than 110 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 2h 35m layover.
Arrives on time70%First flight not cancelled (0.5% are) × connection made (97%) × second flight not cancelled (0.0% are) and within 15 minutes (73%).
Total trip8h 27mONT 13:18 to IAD 00:45, 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.