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

Boston → San Francisco via New York: arrives on time 68%

  1. 06:06 BOS → 07:25 JFK
    DL 2611 · Delta · 1h 19m · 93% on time, 2.9% cancelled
  2. 1h 35m layover in New York (JFK) · 45 min minimum on one ticket
  3. 09:00 JFK → 12:27 SFO
    DL 669 · Delta · 6h 27m · 74% on time, 3.5% cancelled

Total trip 9h 21m, scheduled departure to arrival (San Francisco is 3 h behind Boston). Times are local. Both flew on 56 of the last 56 days.

Makes the connection97%The first flight arrived more than 50 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 1h 35m layover.
Arrives on time68%First flight not cancelled (2.9% are) × connection made (97%) × second flight not cancelled (3.5% are) and within 15 minutes (74%).
Total trip9h 21mBOS 06:06 to SFO 12:27, 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.