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

Dulles → Buffalo via Chicago: arrives on time 63%

  1. 13:15 IAD → 14:29 ORD
    UA 2331 · United · 2h 14m · 81% on time, 0.8% cancelled
  2. 3h 48m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 18:17 ORD → 21:03 BUF
    UA 1335 · United · 1h 46m · 66% on time, 1.6% cancelled

Total trip 7h 48m, scheduled departure to arrival. Times are local. Both flew on 25 of the last 56 days.

Makes the connection97%The first flight arrived more than 183 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 3h 48m layover.
Arrives on time63%First flight not cancelled (0.8% are) × connection made (97%) × second flight not cancelled (1.6% are) and within 15 minutes (66%).
Total trip7h 48mIAD 13:15 to BUF 21:03, 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.