Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Washington via Houston: arrives on time 87%
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00:45 SFO → 06:34 IAHUA 604 · United · 3h 49m · 83% on time, 0.0% cancelled
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3h 13m layover in Houston (IAH) · 45 min minimum on one ticket
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09:47 IAH → 13:57 DCAUA 2670 · United · 3h 10m · 88% on time, 0.0% cancelled
Total trip 10h 12m, scheduled departure to arrival (Washington is 3 h ahead of San Francisco). Times are local. Both flew on 32 of the last 56 days.
Makes the connection99%The first flight arrived more than 148 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 13m layover.
Arrives on time87%First flight not cancelled (0.0% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (88%).
Total trip10h 12mSFO 00:45 to DCA 13:57, 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.