Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Boston → Salt Lake City via Phoenix: arrives on time 87%

  1. 07:00 BOS → 09:33 PHX
    AA 2315 · American · 5h 33m · 90% on time, 0.5% cancelled
  2. 3h 47m layover in Phoenix (PHX) · 90 min minimum on separate tickets
  3. 13:20 PHX → 15:58 SLC
    DL 1431 · Delta · 1h 41m · 89% on time, 0.6% cancelled

Total trip 11h 01m, scheduled departure to arrival (Salt Lake City is 2 h behind Boston). Times are local. Both flew on 55 of the last 56 days.

Makes the connection99%The first flight arrived more than 137 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 47m layover.
Arrives on time87%First flight not cancelled (0.5% are) × connection made (99%) × second flight not cancelled (0.6% are) and within 15 minutes (89%).
Total trip11h 01mBOS 07:00 to SLC 15:58, 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.