Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Tucson via Houston: arrives on time 78%
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12:15 SFO → 18:27 IAHUA 1387 · United · 4h 12m · 78% on time, 0.4% cancelled
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1h 33m layover in Houston (IAH) · 45 min minimum on one ticket
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20:00 IAH → 20:42 TUSUA 4040 · United, flown by Mesa · 2h 42m · 83% on time, 0.0% cancelled
Total trip 8h 27m, scheduled departure to arrival. Times are local. Both flew on 36 of the last 56 days.
Makes the connection94%The first flight arrived more than 48 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 33m layover.
Arrives on time78%First flight not cancelled (0.4% are) × connection made (94%) × second flight not cancelled (0.0% are) and within 15 minutes (83%).
Total trip8h 27mSFO 12:15 to TUS 20:42, 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.