Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Jose → Denver via San Diego: arrives on time 18%
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14:58 SJC → 16:22 SANWN 3701 · Southwest · 1h 25m · 46% on time, 0.0% cancelled
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58m layover in San Diego (SAN) · 45 min minimum on one ticket
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17:20 SAN → 20:40 DENWN 4151 · Southwest · 2h 20m · 45% on time, 0.0% cancelled
Total trip 4h 42m, scheduled departure to arrival (Denver is 1 h ahead of San Jose). Times are local. Both flew on 48 of the last 56 days.
Makes the connection41%The first flight arrived more than 13 minutes late on 59% of the days it flew: too late for the 45-minute minimum connection on a 58m layover.
Arrives on time18%First flight not cancelled (0.0% are) × connection made (41%) × second flight not cancelled (0.0% are) and within 15 minutes (45%).
Total trip4h 42mSJC 14:58 to DEN 20:40, 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.