Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → San Francisco via San Diego: arrives on time 43%
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16:20 IAH → 17:41 SANUA 2751 · United · 3h 21m · 75% on time, 0.0% cancelled
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46m layover in San Diego (SAN) · 45 min minimum on one ticket
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18:27 SAN → 20:07 SFOUA 1302 · United · 1h 40m · 62% on time, 0.0% cancelled
Total trip 5h 47m, scheduled departure to arrival (San Francisco is 2 h behind Houston). Times are local. Both flew on 36 of the last 56 days.
Makes the connection69%The first flight arrived more than 1 minutes late on 31% of the days it flew: too late for the 45-minute minimum connection on a 46m layover.
Arrives on time43%First flight not cancelled (0.0% are) × connection made (69%) × second flight not cancelled (0.0% are) and within 15 minutes (62%).
Total trip5h 47mIAH 16:20 to SFO 20:07, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.