Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → San Francisco via San Diego: arrives on time 74%
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08:18 STL → 09:58 SANWN 4283 · Southwest · 3h 40m · 80% on time, 0.0% cancelled
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3h 41m layover in San Diego (SAN) · 90 min minimum on separate tickets
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13:39 SAN → 15:19 SFOUA 1763 · United · 1h 40m · 74% on time, 0.0% cancelled
Total trip 9h 01m, scheduled departure to arrival (San Francisco is 2 h behind St Louis). Times are local. Both flew on 48 of the last 56 days.
Makes the connection100%The first flight arrived more than 131 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 41m layover.
Arrives on time74%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (74%).
Total trip9h 01mSTL 08:18 to SFO 15:19, 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.