Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Ontario via Denver: arrives on time 91%
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05:30 HOU → 06:55 DENWN 1970 · Southwest · 2h 25m · 98% on time, 0.0% cancelled
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1h 49m layover in Denver (DEN) · 90 min minimum on separate tickets
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08:44 DEN → 10:05 ONTF9 2907 · Frontier · 2h 21m · 91% on time, 0.0% cancelled
Total trip 6h 35m, scheduled departure to arrival (Ontario is 2 h behind Houston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection100%The first flight arrived more than 19 minutes late on <1% of the days it flew: too late for the 90-minute minimum connection on a 1h 49m layover.
Arrives on time91%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (91%).
Total trip6h 35mHOU 05:30 to ONT 10:05, 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.