Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Houston via Denver: arrives on time 30%
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18:17 ORD → 20:22 DENUA 1974 · United · 3h 05m · 58% on time, 3.3% cancelled
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48m layover in Denver (DEN) · 45 min minimum on one ticket
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21:10 DEN → 00:41 IAH +1 dayUA 1253 · United · 2h 31m · 67% on time, 1.8% cancelled
Total trip 6h 24m, scheduled departure to arrival. Times are local. Both flew on 41 of the last 56 days.
Makes the connection47%The first flight arrived more than 3 minutes late on 53% of the days it flew: too late for the 45-minute minimum connection on a 48m layover.
Arrives on time30%First flight not cancelled (3.3% are) × connection made (47%) × second flight not cancelled (1.8% are) and within 15 minutes (67%).
Total trip6h 24mORD 18:17 to IAH 00:41, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.