Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Baltimore → San Francisco via Boston: arrives on time 80%
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06:38 BWI → 08:08 BOSWN 883 · Southwest · 1h 30m · 92% on time, 0.0% cancelled
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3h 27m layover in Boston (BOS) · 90 min minimum on separate tickets
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11:35 BOS → 15:02 SFOUA 1074 · United · 6h 27m · 80% on time, 0.4% cancelled
Total trip 11h 24m, scheduled departure to arrival (San Francisco is 3 h behind Baltimore). Times are local. Both flew on 38 of the last 56 days.
Makes the connection100%The first flight arrived more than 117 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 27m layover.
Arrives on time80%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.4% are) and within 15 minutes (80%).
Total trip11h 24mBWI 06:38 to SFO 15:02, 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.