Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → St Louis via Houston: arrives on time 81%
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00:45 SFO → 06:34 IAHUA 604 · United · 3h 49m · 83% on time, 0.0% cancelled
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1h 26m layover in Houston (IAH) · 45 min minimum on one ticket
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08:00 IAH → 10:07 STLUA 6214 · United, flown by Mesa · 2h 07m · 88% on time, 0.7% cancelled
Total trip 7h 22m, scheduled departure to arrival (St Louis is 2 h ahead of San Francisco). Times are local. Both flew on 55 of the last 56 days.
Makes the connection93%The first flight arrived more than 41 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 26m layover.
Arrives on time81%First flight not cancelled (0.0% are) × connection made (93%) × second flight not cancelled (0.7% are) and within 15 minutes (88%).
Total trip7h 22mSFO 00:45 to STL 10:07, 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.