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

Detroit → San Diego via Boston: arrives on time 48%

  1. 14:01 DTW → 16:10 BOS
    DL 1171 · Delta · 2h 09m · 70% on time, 1.1% cancelled
  2. 1h 00m layover in Boston (BOS) · 45 min minimum on one ticket
  3. 17:10 BOS → 20:26 SAN
    DL 571 · Delta · 6h 16m · 70% on time, 1.6% cancelled

Total trip 9h 25m, scheduled departure to arrival (San Diego is 3 h behind Detroit). Times are local. Both flew on 56 of the last 56 days.

Makes the connection70%The first flight arrived more than 15 minutes late on 30% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time48%First flight not cancelled (1.1% are) × connection made (70%) × second flight not cancelled (1.6% are) and within 15 minutes (70%).
Total trip9h 25mDTW 14:01 to SAN 20:26, 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.