Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Baltimore via Houston: arrives on time 78%
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05:00 SFO → 10:55 IAHUA 2168 · United · 3h 55m · 97% on time, 1.3% cancelled
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1h 21m layover in Houston (IAH) · 45 min minimum on one ticket
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12:16 IAH → 16:30 BWIUA 1720 · United · 3h 14m · 81% on time, 0.0% cancelled
Total trip 8h 30m, scheduled departure to arrival (Baltimore is 3 h ahead of San Francisco). Times are local. Both flew on 56 of the last 56 days.
Makes the connection98%The first flight arrived more than 36 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 21m layover.
Arrives on time78%First flight not cancelled (1.3% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (81%).
Total trip8h 30mSFO 05:00 to BWI 16:30, 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.