Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Boston via Charlotte: arrives on time 43%
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23:49 SFO → 08:05 CLTAA 1580 · American · 5h 16m · 59% on time, 0.0% cancelled
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50m layover in Charlotte (CLT) · 45 min minimum on one ticket
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08:55 CLT → 11:08 BOS +1 dayAA 1533 · American · 2h 13m · 96% on time, 0.0% cancelled
Total trip 8h 19m, scheduled departure to arrival (Boston is 3 h ahead of San Francisco). Times are local. Both flew on 55 of the last 56 days.
Makes the connection45%The first flight arrived more than 5 minutes late on 55% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time43%First flight not cancelled (0.0% are) × connection made (45%) × second flight not cancelled (0.0% are) and within 15 minutes (96%).
Total trip8h 19mSFO 23:49 to BOS 11:08, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.