Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dallas → Ontario via Denver: arrives on time 28%
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17:55 DAL → 19:25 DENWN 1303 · Southwest · 2h 30m · 52% on time, 3.5% cancelled
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1h 50m layover in Denver (DEN) · 45 min minimum on one ticket
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21:15 DEN → 22:35 ONTWN 1663 · Southwest · 2h 20m · 35% on time, 0.0% cancelled
Total trip 6h 40m, scheduled departure to arrival (Ontario is 2 h behind Dallas). Times are local. Both flew on 55 of the last 56 days.
Makes the connection83%The first flight arrived more than 65 minutes late on 17% of the days it flew: too late for the 45-minute minimum connection on a 1h 50m layover.
Arrives on time28%First flight not cancelled (3.5% are) × connection made (83%) × second flight not cancelled (0.0% are) and within 15 minutes (35%).
Total trip6h 40mDAL 17:55 to ONT 22:35, 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.