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

Boston → Denver via Dulles: arrives on time 87%

  1. 05:45 BOS → 07:23 IAD
    UA 1734 · United · 1h 38m · 97% on time, 2.3% cancelled
  2. 52m layover in Dulles (IAD) · 45 min minimum on one ticket
  3. 08:15 IAD → 10:10 DEN
    UA 792 · United · 3h 55m · 95% on time, 0.0% cancelled

Total trip 6h 25m, scheduled departure to arrival (Denver is 2 h behind Boston). Times are local. Both flew on 37 of the last 56 days.

Makes the connection94%The first flight arrived more than 7 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 52m layover.
Arrives on time87%First flight not cancelled (2.3% are) × connection made (94%) × second flight not cancelled (0.0% are) and within 15 minutes (95%).
Total trip6h 25mBOS 05:45 to DEN 10:10, 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.