Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Baltimore → San Francisco via Houston: arrives on time 65%
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12:55 BWI → 15:11 IAHUA 743 · United · 3h 16m · 86% on time, 1.9% cancelled
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1h 14m layover in Houston (IAH) · 45 min minimum on one ticket
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16:25 IAH → 18:30 SFOUA 382 · United · 4h 05m · 73% on time, 0.6% cancelled
Total trip 8h 35m, scheduled departure to arrival (San Francisco is 3 h behind Baltimore). Times are local. Both flew on 40 of the last 56 days.
Makes the connection92%The first flight arrived more than 29 minutes late on 8% of the days it flew: too late for the 45-minute minimum connection on a 1h 14m layover.
Arrives on time65%First flight not cancelled (1.9% are) × connection made (92%) × second flight not cancelled (0.6% are) and within 15 minutes (73%).
Total trip8h 35mBWI 12:55 to SFO 18:30, 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.