Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Seattle → Washington via Houston: arrives on time 91%
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23:49 SEA → 06:10 IAHUA 2379 · United · 4h 21m · 84% on time, 0.4% cancelled
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1h 36m layover in Houston (IAH) · 45 min minimum on one ticket
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07:46 IAH → 11:56 DCA +1 dayUA 2047 · United · 3h 10m · 97% on time, 0.0% cancelled
Total trip 9h 07m, scheduled departure to arrival (Washington is 3 h ahead of Seattle). Times are local. Both flew on 24 of the last 56 days.
Makes the connection94%The first flight arrived more than 51 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 36m layover.
Arrives on time91%First flight not cancelled (0.4% are) × connection made (94%) × second flight not cancelled (0.0% are) and within 15 minutes (97%).
Total trip9h 07mSEA 23:49 to DCA 11:56, 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.