Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → St Louis via Denver: arrives on time 55%
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12:43 SFO → 16:35 DENUA 540 · United · 2h 52m · 77% on time, 0.0% cancelled
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59m layover in Denver (DEN) · 45 min minimum on one ticket
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17:34 DEN → 20:43 STLUA 1422 · United · 2h 09m · 72% on time, 0.3% cancelled
Total trip 6h 00m, scheduled departure to arrival (St Louis is 2 h ahead of San Francisco). Times are local. Both flew on 55 of the last 56 days.
Makes the connection76%The first flight arrived more than 14 minutes late on 24% of the days it flew: too late for the 45-minute minimum connection on a 59m layover.
Arrives on time55%First flight not cancelled (0.0% are) × connection made (76%) × second flight not cancelled (0.3% are) and within 15 minutes (72%).
Total trip6h 00mSFO 12:43 to STL 20:43, 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.