IAH (Houston) to DSM (Des Moines) flights arrive on time 68% of the time. The most reliable airline on this route is SkyWest Airlines at 81%. The average delay is 59 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.IAH → DSM
IAH (Houston) to DSM (Des Moines)
IAH → DSM on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is delayed fairly often. About 68% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
SkyWest Airlines is significantly more reliable on this route at 81% on time vs United Airlines at 66%.
Airline Comparison
SkyWest Airlines leads at 81% on time; United Airlines trails at 66%.
Accurate?
Good to know
Departing from IAH
80% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. IAH has long runway queues.
TSA is currently ~11 min. Best time: 4 AM (about 5 min).
Arriving at DSM
81% on timeWhen flights into DSM are late, the average delay is 76 minutes. Build buffer if you have ground plans.
If connecting at DSM: TSA is ~28 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.