Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → St Louis via San Diego: arrives on time 2%
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11:00 SFO → 12:40 SANWN 3496 · Southwest · 1h 40m · 8% on time, 0.0% cancelled
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50m layover in San Diego (SAN) · 45 min minimum on one ticket
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13:30 SAN → 19:05 STLWN 3552 · Southwest · 3h 35m · 39% on time, 0.0% cancelled
Total trip 6h 05m, scheduled departure to arrival (St Louis is 2 h ahead of San Francisco). Times are local. Both flew on 24 of the last 56 days.
Makes the connection4%The first flight arrived more than 5 minutes late on 96% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time2%First flight not cancelled (0.0% are) × connection made (4%) × second flight not cancelled (0.0% are) and within 15 minutes (39%).
Total trip6h 05mSFO 11:00 to STL 19:05, 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.