Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Phoenix → Boston via Denver: arrives on time 59%
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13:50 PHX → 16:45 DENUA 709 · United · 1h 55m · 87% on time, 2.6% cancelled
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55m layover in Denver (DEN) · 45 min minimum on one ticket
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17:40 DEN → 23:44 BOSUA 1356 · United · 4h 04m · 73% on time, 2.2% cancelled
Total trip 6h 54m, scheduled departure to arrival (Boston is 3 h ahead of Phoenix). Times are local. Both flew on 0 of the last 56 days, too few to list among the best connections.
Makes the connection85%The first flight arrived more than 10 minutes late on 15% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time59%First flight not cancelled (2.6% are) × connection made (85%) × second flight not cancelled (2.2% are) and within 15 minutes (73%).
Total trip6h 54mPHX 13:50 to BOS 23:44, 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.