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

San Francisco → Boston via Los Angeles: arrives on time 44%

  1. 18:43 SFO → 20:10 LAX
    DL 1629 · Delta · 1h 27m · 64% on time, 0.0% cancelled
  2. 50m layover in Los Angeles (LAX) · 45 min minimum on one ticket
  3. 21:00 LAX → 05:28 BOS +1 day
    DL 507 · Delta · 5h 28m · 85% on time, 2.8% cancelled

Total trip 7h 45m, scheduled departure to arrival (Boston is 3 h ahead of San Francisco). Times are local. Both flew on 49 of the last 56 days.

Makes the connection53%The first flight arrived more than 5 minutes late on 47% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time44%First flight not cancelled (0.0% are) × connection made (53%) × second flight not cancelled (2.8% are) and within 15 minutes (85%).
Total trip7h 45mSFO 18:43 to BOS 05:28, 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.