Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Des Moines → Washington via Houston: arrives on time 73%
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06:20 DSM → 08:49 IAHUA 1982 · United · 2h 29m · 91% on time, 1.5% cancelled
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3h 06m layover in Houston (IAH) · 45 min minimum on one ticket
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11:55 IAH → 16:03 DCAUA 654 · United · 3h 08m · 75% on time, 0.7% cancelled
Total trip 8h 43m, scheduled departure to arrival (Washington is 1 h ahead of Des Moines). Times are local. Both flew on 54 of the last 56 days.
Makes the connection99%The first flight arrived more than 141 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 06m layover.
Arrives on time73%First flight not cancelled (1.5% are) × connection made (99%) × second flight not cancelled (0.7% are) and within 15 minutes (75%).
Total trip8h 43mDSM 06:20 to DCA 16:03, 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.