Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
St Louis → San Francisco via Denver: arrives on time 53%
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13:38 STL → 15:00 DENUA 1380 · United · 2h 22m · 86% on time, 0.8% cancelled
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47m layover in Denver (DEN) · 45 min minimum on one ticket
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15:47 DEN → 17:30 SFOUA 2633 · United · 2h 43m · 73% on time, 0.0% cancelled
Total trip 5h 52m, scheduled departure to arrival (San Francisco is 2 h behind St Louis). Times are local. Both flew on 55 of the last 56 days.
Makes the connection73%The first flight arrived more than 2 minutes late on 27% of the days it flew: too late for the 45-minute minimum connection on a 47m layover.
Arrives on time53%First flight not cancelled (0.8% are) × connection made (73%) × second flight not cancelled (0.0% are) and within 15 minutes (73%).
Total trip5h 52mSTL 13:38 to SFO 17:30, 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.