Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Dulles via Detroit: arrives on time 92%
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22:55 SFO → 06:30 DTWDL 335 · Delta · 4h 35m · 74% on time, 0.6% cancelled
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3h 43m layover in Detroit (DTW) · 90 min minimum on separate tickets
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10:13 DTW → 11:50 IAD +1 dayUA 3500 · United, flown by Republic · 1h 37m · 93% on time, 0.0% cancelled
Total trip 9h 55m, scheduled departure to arrival (Dulles is 3 h ahead of San Francisco). Times are local. Both flew on 55 of the last 56 days.
Makes the connection99%The first flight arrived more than 133 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 43m layover.
Arrives on time92%First flight not cancelled (0.6% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (93%).
Total trip9h 55mSFO 22:55 to IAD 11:50, 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.