Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Raleigh/Durham → San Francisco via Houston: arrives on time 78%
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10:14 RDU → 12:12 IAHF9 1741 · Frontier · 2h 59m · 80% on time, 0.7% cancelled
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3h 18m layover in Houston (IAH) · 90 min minimum on separate tickets
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15:30 IAH → 17:35 SFOUA 589 · United · 4h 05m · 80% on time, 0.0% cancelled
Total trip 10h 21m, scheduled departure to arrival (San Francisco is 3 h behind Raleigh/Durham). Times are local. Both flew on 55 of the last 56 days.
Makes the connection98%The first flight arrived more than 108 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 18m layover.
Arrives on time78%First flight not cancelled (0.7% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (80%).
Total trip10h 21mRDU 10:14 to SFO 17:35, 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.