Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → San Francisco via Philadelphia: arrives on time 73%
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06:00 BOS → 07:37 PHLAA 1146 · American · 1h 43m · 95% on time, 2.9% cancelled
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50m layover in Philadelphia (PHL) · 45 min minimum on one ticket
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08:27 PHL → 11:29 SFOAA 1524 · American · 6h 01m · 82% on time, 0.0% cancelled
Total trip 8h 28m, scheduled departure to arrival (San Francisco is 3 h behind Boston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection92%The first flight arrived more than 5 minutes late on 8% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time73%First flight not cancelled (2.9% are) × connection made (92%) × second flight not cancelled (0.0% are) and within 15 minutes (82%).
Total trip8h 28mBOS 06:00 to SFO 11:29, 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.