Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Denver → Raleigh/Durham via San Francisco: arrives on time 48%
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21:10 DEN → 22:56 SFOUA 2123 · United · 2h 46m · 60% on time, 0.0% cancelled
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1h 03m layover in San Francisco (SFO) · 45 min minimum on one ticket
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23:59 SFO → 08:21 RDU +1 dayUA 1965 · United · 5h 22m · 77% on time, 3.1% cancelled
Total trip 9h 11m, scheduled departure to arrival (Raleigh/Durham is 2 h ahead of Denver). Times are local. Both flew on 32 of the last 56 days.
Makes the connection64%The first flight arrived more than 18 minutes late on 36% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time48%First flight not cancelled (0.0% are) × connection made (64%) × second flight not cancelled (3.1% are) and within 15 minutes (77%).
Total trip9h 11mDEN 21:10 to RDU 08:21, 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.