Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Diego → Boston via Chicago: arrives on time 91%
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22:45 SAN → 05:11 ORDAA 1543 · American · 4h 15m · 90% on time, 1.4% cancelled
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2h 22m layover in Chicago (ORD) · 90 min minimum on separate tickets
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07:33 ORD → 11:05 BOS +1 dayUA 1076 · United · 2h 32m · 94% on time, 0.0% cancelled
Total trip 9h 20m, scheduled departure to arrival (Boston is 3 h ahead of San Diego). Times are local. Both flew on 55 of the last 56 days.
Makes the connection97%The first flight arrived more than 52 minutes late on 3% of the days it flew: too late for the 90-minute minimum connection on a 2h 22m layover.
Arrives on time91%First flight not cancelled (1.4% are) × connection made (97%) × second flight not cancelled (0.0% are) and within 15 minutes (94%).
Total trip9h 20mSAN 22:45 to BOS 11:05, 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.