Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Raleigh/Durham via Chicago: arrives on time 35%
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14:30 IAH → 17:22 ORDUA 699 · United · 2h 52m · 68% on time, 0.0% cancelled
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1h 03m layover in Chicago (ORD) · 45 min minimum on one ticket
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18:25 ORD → 21:37 RDUUA 1989 · United · 2h 12m · 53% on time, 1.6% cancelled
Total trip 6h 07m, scheduled departure to arrival (Raleigh/Durham is 1 h ahead of Houston). Times are local. Both flew on 37 of the last 56 days.
Makes the connection68%The first flight arrived more than 18 minutes late on 32% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time35%First flight not cancelled (0.0% are) × connection made (68%) × second flight not cancelled (1.6% are) and within 15 minutes (53%).
Total trip6h 07mIAH 14:30 to RDU 21:37, 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.