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

Boston → San Diego via Denver: arrives on time 78%

  1. 06:25 BOS → 08:50 DEN
    WN 4156 · Southwest · 4h 25m · 88% on time, 0.0% cancelled
  2. 1h 42m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 10:32 DEN → 12:00 SAN
    WN 1700 · Southwest · 2h 25m · 81% on time, 1.5% cancelled

Total trip 8h 32m, scheduled departure to arrival (San Diego is 3 h behind Boston). Times are local. Both flew on 48 of the last 56 days.

Makes the connection98%The first flight arrived more than 57 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 42m layover.
Arrives on time78%First flight not cancelled (0.0% are) × connection made (98%) × second flight not cancelled (1.5% are) and within 15 minutes (81%).
Total trip8h 32mBOS 06:25 to SAN 12:00, 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.