Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Houston via Denver: arrives on time 77%
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05:00 SFO → 08:35 DENUA 1479 · United · 2h 35m · 96% on time, 0.0% cancelled
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1h 40m layover in Denver (DEN) · 90 min minimum on separate tickets
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10:15 DEN → 13:55 HOUWN 1543 · Southwest · 2h 40m · 81% on time, 0.0% cancelled
Total trip 6h 55m, scheduled departure to arrival (Houston is 2 h ahead of San Francisco). Times are local. Both flew on 55 of the last 56 days.
Makes the connection95%The first flight arrived more than 10 minutes late on 5% of the days it flew: too late for the 90-minute minimum connection on a 1h 40m layover.
Arrives on time77%First flight not cancelled (0.0% are) × connection made (95%) × second flight not cancelled (0.0% are) and within 15 minutes (81%).
Total trip6h 55mSFO 05:00 to HOU 13:55, 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.