Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Denver via Chicago: arrives on time 19%
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14:29 SFO → 21:03 ORDUA 1777 · United · 4h 34m · 46% on time, 0.0% cancelled
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47m layover in Chicago (ORD) · 45 min minimum on one ticket
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21:50 ORD → 23:48 DENUA 377 · United · 2h 58m · 72% on time, 3.3% cancelled
Total trip 8h 19m, scheduled departure to arrival (Denver is 1 h ahead of San Francisco). Times are local. Both flew on 30 of the last 56 days.
Makes the connection28%The first flight arrived more than 2 minutes late on 72% of the days it flew: too late for the 45-minute minimum connection on a 47m layover.
Arrives on time19%First flight not cancelled (0.0% are) × connection made (28%) × second flight not cancelled (3.3% are) and within 15 minutes (72%).
Total trip8h 19mSFO 14:29 to DEN 23:48, 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.