Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → San Francisco via Kansas City: arrives on time 17%
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17:15 IAD → 19:03 MCIUA 2057 · United · 2h 48m · 77% on time, 1.4% cancelled
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56m layover in Kansas City (MCI) · 45 min minimum on one ticket
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19:59 MCI → 21:50 SFOUA 1429 · United · 3h 51m · 24% on time, 1.4% cancelled
Total trip 7h 35m, scheduled departure to arrival (San Francisco is 3 h behind Dulles). Times are local. Both flew on 56 of the last 56 days.
Makes the connection72%The first flight arrived more than 11 minutes late on 28% of the days it flew: too late for the 45-minute minimum connection on a 56m layover.
Arrives on time17%First flight not cancelled (1.4% are) × connection made (72%) × second flight not cancelled (1.4% are) and within 15 minutes (24%).
Total trip7h 35mIAD 17:15 to SFO 21:50, 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.