Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Tucson via San Francisco: arrives on time 44%
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09:35 IAH → 11:35 SFOUA 2358 · United · 4h 00m · 74% on time, 1.4% cancelled
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48m layover in San Francisco (SFO) · 45 min minimum on one ticket
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12:23 SFO → 14:47 TUSUA 6023 · United, flown by SkyWest · 2h 24m · 74% on time, 0.0% cancelled
Total trip 7h 12m, scheduled departure to arrival (Tucson is 2 h behind Houston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection61%The first flight arrived more than 3 minutes late on 39% of the days it flew: too late for the 45-minute minimum connection on a 48m layover.
Arrives on time44%First flight not cancelled (1.4% are) × connection made (61%) × second flight not cancelled (0.0% are) and within 15 minutes (74%).
Total trip7h 12mIAH 09:35 to TUS 14:47, 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.