Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Tucson → Denver via San Francisco: arrives on time 70%
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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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1h 06m layover in San Francisco (SFO) · 45 min minimum on one ticket
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18:56 SFO → 22:44 DENUA 2436 · United · 2h 48m · 88% on time, 0.0% cancelled
Total trip 6h 16m, 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 connection80%The first flight arrived more than 21 minutes late on 20% of the days it flew: too late for the 45-minute minimum connection on a 1h 06m layover.
Arrives on time70%First flight not cancelled (0.3% are) × connection made (80%) × second flight not cancelled (0.0% are) and within 15 minutes (88%).
Total trip6h 16mTUS 15:28 to DEN 22:44, 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.