Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Salt Lake City via Denver: arrives on time 75%
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07:45 BOS → 10:19 DENUA 647 · United · 4h 34m · 91% on time, 1.6% cancelled
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1h 21m layover in Denver (DEN) · 45 min minimum on one ticket
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11:40 DEN → 13:13 SLCUA 1963 · United · 1h 33m · 80% on time, 0.3% cancelled
Total trip 7h 28m, scheduled departure to arrival (Salt Lake City is 2 h behind Boston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection96%The first flight arrived more than 36 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 1h 21m layover.
Arrives on time75%First flight not cancelled (1.6% are) × connection made (96%) × second flight not cancelled (0.3% are) and within 15 minutes (80%).
Total trip7h 28mBOS 07:45 to SLC 13:13, 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.