Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Diego → Boston via Denver: arrives on time 66%
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08:45 SAN → 12:17 DENUA 2476 · United · 2h 32m · 89% on time, 0.5% cancelled
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1h 49m layover in Denver (DEN) · 45 min minimum on one ticket
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14:06 DEN → 20:10 BOSUA 597 · United · 4h 04m · 71% on time, 1.3% cancelled
Total trip 8h 25m, scheduled departure to arrival (Boston is 3 h ahead of San Diego). Times are local. Both flew on 56 of the last 56 days.
Makes the connection95%The first flight arrived more than 64 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 1h 49m layover.
Arrives on time66%First flight not cancelled (0.5% are) × connection made (95%) × second flight not cancelled (1.3% are) and within 15 minutes (71%).
Total trip8h 25mSAN 08:45 to BOS 20:10, 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.