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

Boston → Kansas City via Denver: arrives on time 46%

  1. 16:57 BOS → 19:45 DEN
    UA 800 · United · 4h 48m · 75% on time, 1.1% cancelled
  2. 55m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 20:40 DEN → 23:25 MCI
    UA 1596 · United · 1h 45m · 67% on time, 0.9% cancelled

Total trip 7h 28m, scheduled departure to arrival (Kansas City is 1 h behind Boston). Times are local. Both flew on 55 of the last 56 days.

Makes the connection70%The first flight arrived more than 10 minutes late on 30% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time46%First flight not cancelled (1.1% are) × connection made (70%) × second flight not cancelled (0.9% are) and within 15 minutes (67%).
Total trip7h 28mBOS 16:57 to MCI 23:25, 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.