Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Chicago via Atlanta: arrives on time 35%
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14:40 IAH → 17:54 ATLUA 1211 · United · 2h 14m · 49% on time, 0.0% cancelled
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1h 10m layover in Atlanta (ATL) · 45 min minimum on one ticket
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19:04 ATL → 20:30 ORDUA 1046 · United · 2h 26m · 63% on time, 2.6% cancelled
Total trip 5h 50m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.
Makes the connection58%The first flight arrived more than 25 minutes late on 42% of the days it flew: too late for the 45-minute minimum connection on a 1h 10m layover.
Arrives on time35%First flight not cancelled (0.0% are) × connection made (58%) × second flight not cancelled (2.6% are) and within 15 minutes (63%).
Total trip5h 50mIAH 14:40 to ORD 20:30, 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.