Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Raleigh/Durham via Houston: arrives on time 87%
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23:59 SFO → 06:04 IAHUA 505 · United · 4h 05m · 82% on time, 0.3% cancelled
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2h 11m layover in Houston (IAH) · 45 min minimum on one ticket
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08:15 IAH → 12:02 RDU +1 dayUA 6148 · United, flown by Mesa · 2h 47m · 91% on time, 1.1% cancelled
Total trip 9h 03m, scheduled departure to arrival (Raleigh/Durham is 3 h ahead of San Francisco). Times are local. Both flew on 48 of the last 56 days.
Makes the connection97%The first flight arrived more than 86 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 2h 11m layover.
Arrives on time87%First flight not cancelled (0.3% are) × connection made (97%) × second flight not cancelled (1.1% are) and within 15 minutes (91%).
Total trip9h 03mSFO 23:59 to RDU 12:02, 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.