Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Phoenix via Denver: arrives on time 87%
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06:25 BOS → 08:50 DENWN 4156 · Southwest · 4h 25m · 88% on time, 0.0% cancelled
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2h 35m layover in Denver (DEN) · 90 min minimum on separate tickets
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11:25 DEN → 12:25 PHXUA 1686 · United · 2h 00m · 87% on time, 0.0% cancelled
Total trip 9h 00m, scheduled departure to arrival (Phoenix is 3 h behind Boston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection100%The first flight arrived more than 65 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 2h 35m layover.
Arrives on time87%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (87%).
Total trip9h 00mBOS 06:25 to PHX 12:25, 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.