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

Atlanta → Rochester via Dulles: arrives on time 50%

  1. 14:41 ATL → 16:35 IAD
    UA 1831 · United · 1h 54m · 78% on time, 0.8% cancelled
  2. 55m layover in Dulles (IAD) · 45 min minimum on one ticket
  3. 17:30 IAD → 19:05 ROC
    UA 4871 · United, flown by CommuteAir · 1h 35m · 75% on time, 6.1% cancelled

Total trip 4h 24m, scheduled departure to arrival. Times are local. Both flew on 49 of the last 56 days.

Makes the connection71%The first flight arrived more than 10 minutes late on 29% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time50%First flight not cancelled (0.8% are) × connection made (71%) × second flight not cancelled (6.1% are) and within 15 minutes (75%).
Total trip4h 24mATL 14:41 to ROC 19:05, 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.