Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → San Francisco via Chicago: arrives on time 43%
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08:15 IAD → 09:36 ORDUA 1775 · United · 2h 21m · 84% on time, 0.6% cancelled
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49m layover in Chicago (ORD) · 45 min minimum on one ticket
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10:25 ORD → 13:14 SFOUA 543 · United · 4h 49m · 63% on time, 2.0% cancelled
Total trip 7h 59m, 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 connection69%The first flight arrived more than 4 minutes late on 31% of the days it flew: too late for the 45-minute minimum connection on a 49m layover.
Arrives on time43%First flight not cancelled (0.6% are) × connection made (69%) × second flight not cancelled (2.0% are) and within 15 minutes (63%).
Total trip7h 59mIAD 08:15 to SFO 13:14, 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.