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

Dulles → Boston via Atlanta: arrives on time 76%

  1. 06:00 IAD → 07:46 ATL
    DL 2127 · Delta · 1h 46m · 90% on time, 2.6% cancelled
  2. 49m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 08:35 ATL → 11:14 BOS
    DL 2432 · Delta · 2h 39m · 93% on time, 0.9% cancelled

Total trip 5h 14m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.

Makes the connection85%The first flight arrived more than 4 minutes late on 15% of the days it flew: too late for the 45-minute minimum connection on a 49m layover.
Arrives on time76%First flight not cancelled (2.6% are) × connection made (85%) × second flight not cancelled (0.9% are) and within 15 minutes (93%).
Total trip5h 14mIAD 06:00 to BOS 11:14, 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.