Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Denver → Tucson via Houston: arrives on time 79%
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05:00 DEN → 08:32 IAHUA 320 · United · 2h 32m · 97% on time, 0.5% cancelled
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1h 00m layover in Houston (IAH) · 45 min minimum on one ticket
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09:32 IAH → 10:07 TUSUA 6219 · United, flown by Mesa · 2h 35m · 82% on time, 0.0% cancelled
Total trip 6h 07m, scheduled departure to arrival (Tucson is 1 h behind Denver). Times are local. Both flew on 56 of the last 56 days.
Makes the connection97%The first flight arrived more than 15 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time79%First flight not cancelled (0.5% are) × connection made (97%) × second flight not cancelled (0.0% are) and within 15 minutes (82%).
Total trip6h 07mDEN 05:00 to TUS 10:07, 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.