Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Salt Lake City via Denver: arrives on time 83%
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07:45 BOS → 10:19 DENUA 647 · United · 4h 34m · 91% on time, 1.6% cancelled
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3h 21m layover in Denver (DEN) · 45 min minimum on one ticket
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13:40 DEN → 15:13 SLCUA 1840 · United · 1h 33m · 84% on time, 0.0% cancelled
Total trip 9h 28m, scheduled departure to arrival (Salt Lake City is 2 h behind Boston). Times are local. Both flew on 55 of the last 56 days.
Makes the connection100%The first flight arrived more than 156 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 3h 21m layover.
Arrives on time83%First flight not cancelled (1.6% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (84%).
Total trip9h 28mBOS 07:45 to SLC 15:13, 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.