Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Diego → Houston via Chicago: arrives on time 56%
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10:35 SAN → 16:52 ORDUA 1710 · United · 4h 17m · 82% on time, 1.0% cancelled
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53m layover in Chicago (ORD) · 45 min minimum on one ticket
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17:45 ORD → 20:50 IAHUA 1954 · United · 3h 05m · 77% on time, 1.4% cancelled
Total trip 8h 15m, scheduled departure to arrival (Houston is 2 h ahead of San Diego). Times are local. Both flew on 56 of the last 56 days.
Makes the connection74%The first flight arrived more than 8 minutes late on 26% of the days it flew: too late for the 45-minute minimum connection on a 53m layover.
Arrives on time56%First flight not cancelled (1.0% are) × connection made (74%) × second flight not cancelled (1.4% are) and within 15 minutes (77%).
Total trip8h 15mSAN 10:35 to IAH 20:50, 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.