Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → San Diego via Denver: arrives on time 2%
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14:35 SFO → 18:10 DENWN 3641 · Southwest · 2h 35m · 10% on time, 0.0% cancelled
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1h 05m layover in Denver (DEN) · 45 min minimum on one ticket
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19:15 DEN → 20:40 SANWN 1703 · Southwest · 2h 25m · 19% on time, 0.0% cancelled
Total trip 6h 05m, scheduled departure to arrival. Times are local. Both flew on 39 of the last 56 days.
Makes the connection10%The first flight arrived more than 20 minutes late on 90% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time2%First flight not cancelled (0.0% are) × connection made (10%) × second flight not cancelled (0.0% are) and within 15 minutes (19%).
Total trip6h 05mSFO 14:35 to SAN 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.