Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Diego → Boston via Seattle: arrives on time 61%
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07:00 SAN → 10:05 SEADL 2530 · Delta · 3h 05m · 91% on time, 0.5% cancelled
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1h 10m layover in Seattle (SEA) · 45 min minimum on one ticket
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11:15 SEA → 19:43 BOSDL 438 · Delta · 5h 26m · 65% on time, 0.0% cancelled
Total trip 9h 41m, scheduled departure to arrival (Boston is 3 h ahead of San Diego). Times are local. Both flew on 49 of the last 56 days.
Makes the connection93%The first flight arrived more than 25 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 10m layover.
Arrives on time61%First flight not cancelled (0.5% are) × connection made (93%) × second flight not cancelled (0.0% are) and within 15 minutes (65%).
Total trip9h 41mSAN 07:00 to BOS 19:43, 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.