Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Seattle → Dulles via San Francisco: arrives on time 85%
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10:29 SEA → 12:47 SFOUA 1482 · United · 2h 18m · 71% on time, 0.4% cancelled
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3h 47m layover in San Francisco (SFO) · 45 min minimum on one ticket
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16:34 SFO → 00:55 IAD +1 dayUA 1453 · United · 5h 21m · 87% on time, 0.4% cancelled
Total trip 11h 26m, scheduled departure to arrival (Dulles is 3 h ahead of Seattle). Times are local. Both flew on 36 of the last 56 days.
Makes the connection98%The first flight arrived more than 182 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 3h 47m layover.
Arrives on time85%First flight not cancelled (0.4% are) × connection made (98%) × second flight not cancelled (0.4% are) and within 15 minutes (87%).
Total trip11h 26mSEA 10:29 to IAD 00:55, 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.