IAH (Houston) to TUS (Tucson) flights arrive on time 76% of the time. The most reliable airline on this route is United Airlines at 80%. The average delay is 63 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.IAH → TUS
IAH (Houston) to TUS (Tucson)
IAH → TUS on-time performance by month
24
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JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 76% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
United Airlines edges out SkyWest Airlines on this route — 80% vs 74% on time.
Airline Comparison
United Airlines leads at 80% on time; SkyWest Airlines trails at 74%.
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 ~27 min. Best time: 4 AM (about 5 min).
Arriving at TUS
83% on timeWhen flights into TUS are late, the average delay is 69 minutes. Build buffer if you have ground plans.
If connecting at TUS: TSA is ~10 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated May 2026. Source: Bureau of Transportation Statistics.