Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → San Francisco via Los Angeles: arrives on time 80%
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10:55 BOS → 14:07 LAXDL 2004 · Delta · 6h 12m · 89% on time, 1.2% cancelled
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3h 03m layover in Los Angeles (LAX) · 90 min minimum on separate tickets
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17:10 LAX → 18:38 SFOUA 233 · United · 1h 28m · 83% on time, 0.0% cancelled
Total trip 10h 43m, scheduled departure to arrival (San Francisco is 3 h behind Boston). Times are local. Both flew on 49 of the last 56 days.
Makes the connection98%The first flight arrived more than 93 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 03m layover.
Arrives on time80%First flight not cancelled (1.2% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (83%).
Total trip10h 43mBOS 10:55 to SFO 18:38, 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.