tailodds FORECAST
Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Dulles → Buffalo via Atlanta: arrives on time 80%

  1. 08:15 IAD → 10:14 ATL
    UA 2739 · United · 1h 59m · 89% on time, 0.4% cancelled
  2. 3h 46m layover in Atlanta (ATL) · 90 min minimum on separate tickets
  3. 14:00 ATL → 16:06 BUF
    DL 2266 · Delta · 2h 06m · 82% on time, 0.0% cancelled

Total trip 7h 51m, scheduled departure to arrival. Times are local. Both flew on 31 of the last 56 days.

Makes the connection98%The first flight arrived more than 136 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 46m layover.
Arrives on time80%First flight not cancelled (0.4% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (82%).
Total trip7h 51mIAD 08:15 to BUF 16:06, 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.