Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Phoenix via Salt Lake City: arrives on time 63%
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11:15 BOS → 14:24 SLCDL 464 · Delta · 5h 09m · 78% on time, 0.8% cancelled
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56m layover in Salt Lake City (SLC) · 45 min minimum on one ticket
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15:20 SLC → 16:04 PHXDL 1738 · Delta · 1h 46m · 85% on time, 0.0% cancelled
Total trip 7h 51m, scheduled departure to arrival (Phoenix is 3 h behind Boston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection75%The first flight arrived more than 11 minutes late on 25% of the days it flew: too late for the 45-minute minimum connection on a 56m layover.
Arrives on time63%First flight not cancelled (0.8% are) × connection made (75%) × second flight not cancelled (0.0% are) and within 15 minutes (85%).
Total trip7h 51mBOS 11:15 to PHX 16:04, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.