Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Tucson → Denver via San Francisco: arrives on time 81%
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15:28 TUS → 17:50 SFOUA 5583 · United, flown by SkyWest · 2h 22m · 76% on time, 0.3% cancelled
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2h 06m layover in San Francisco (SFO) · 45 min minimum on one ticket
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19:56 SFO → 23:43 DENUA 2019 · United · 2h 47m · 88% on time, 0.0% cancelled
Total trip 7h 15m, scheduled departure to arrival (Denver is 1 h ahead of Tucson). Times are local. Both flew on 56 of the last 56 days.
Makes the connection93%The first flight arrived more than 81 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 2h 06m layover.
Arrives on time81%First flight not cancelled (0.3% are) × connection made (93%) × second flight not cancelled (0.0% are) and within 15 minutes (88%).
Total trip7h 15mTUS 15:28 to DEN 23:43, 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.