Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Diego → St Louis via Las Vegas: arrives on time 11%
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16:25 SAN → 17:50 LASWN 4111 · Southwest · 1h 25m · 16% on time, 0.0% cancelled
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1h 10m layover in Las Vegas (LAS) · 45 min minimum on one ticket
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19:00 LAS → 00:12 STL +1 dayWN 4539 · Southwest · 3h 12m · 38% on time, 0.0% cancelled
Total trip 5h 47m, scheduled departure to arrival (St Louis is 2 h ahead of San Diego). Times are local. Both flew on 24 of the last 56 days.
Makes the connection28%The first flight arrived more than 25 minutes late on 72% of the days it flew: too late for the 45-minute minimum connection on a 1h 10m layover.
Arrives on time11%First flight not cancelled (0.0% are) × connection made (28%) × second flight not cancelled (0.0% are) and within 15 minutes (38%).
Total trip5h 47mSAN 16:25 to STL 00:12, 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.