Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Tucson via San Francisco: arrives on time 71%
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16:25 IAH → 18:30 SFOUA 382 · United · 4h 05m · 73% on time, 0.6% cancelled
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2h 27m layover in San Francisco (SFO) · 45 min minimum on one ticket
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20:57 SFO → 23:26 TUSUA 5688 · United, flown by SkyWest · 2h 29m · 77% on time, 0.3% cancelled
Total trip 9h 01m, scheduled departure to arrival (Tucson is 2 h behind Houston). Times are local. Both flew on 52 of the last 56 days.
Makes the connection93%The first flight arrived more than 102 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 2h 27m layover.
Arrives on time71%First flight not cancelled (0.6% are) × connection made (93%) × second flight not cancelled (0.3% are) and within 15 minutes (77%).
Total trip9h 01mIAH 16:25 to TUS 23:26, 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.