Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Boston → Phoenix via Detroit: arrives on time 74%

  1. 05:30 BOS → 07:39 DTW
    DL 1019 · Delta · 2h 09m · 95% on time, 2.5% cancelled
  2. 1h 06m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 08:45 DTW → 09:56 PHX
    DL 1070 · Delta · 4h 11m · 80% on time, 0.5% cancelled

Total trip 7h 26m, scheduled departure to arrival (Phoenix is 3 h behind Boston). Times are local. Both flew on 56 of the last 56 days.

Makes the connection95%The first flight arrived more than 21 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 1h 06m layover.
Arrives on time74%First flight not cancelled (2.5% are) × connection made (95%) × second flight not cancelled (0.5% are) and within 15 minutes (80%).
Total trip7h 26mBOS 05:30 to PHX 09:56, 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.