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

Boston → Kansas City via Denver: arrives on time 93%

  1. 06:25 BOS → 08:50 DEN
    WN 4156 · Southwest · 4h 25m · 88% on time, 0.0% cancelled
  2. 1h 10m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 10:00 DEN → 12:45 MCI
    WN 3114 · Southwest · 1h 45m · 98% on time, 0.0% cancelled

Total trip 7h 20m, scheduled departure to arrival (Kansas City is 1 h behind Boston). Times are local. Both flew on 40 of the last 56 days.

Makes the connection95%The first flight arrived more than 25 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 1h 10m layover.
Arrives on time93%First flight not cancelled (0.0% are) × connection made (95%) × second flight not cancelled (0.0% are) and within 15 minutes (98%).
Total trip7h 20mBOS 06:25 to MCI 12:45, 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.