Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → San Francisco via Denver: arrives on time 66%
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05:30 HOU → 06:55 DENWN 1970 · Southwest · 2h 25m · 98% on time, 0.0% cancelled
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2h 52m layover in Denver (DEN) · 90 min minimum on separate tickets
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09:47 DEN → 11:43 SFOF9 1229 · Frontier · 2h 56m · 66% on time, 0.0% cancelled
Total trip 8h 13m, scheduled departure to arrival (San Francisco is 2 h behind Houston). Times are local. Both flew on 37 of the last 56 days.
Makes the connection100%The first flight arrived more than 82 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 2h 52m layover.
Arrives on time66%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (66%).
Total trip8h 13mHOU 05:30 to SFO 11:43, 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.