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

Dulles → Houston via Atlanta: arrives on time 85%

  1. 06:00 IAD → 07:46 ATL
    DL 2127 · Delta · 1h 46m · 90% on time, 2.6% cancelled
  2. 3h 51m layover in Atlanta (ATL) · 90 min minimum on separate tickets
  3. 11:37 ATL → 12:47 IAH
    UA 425 · United · 2h 10m · 89% on time, 0.0% cancelled

Total trip 7h 47m, scheduled departure to arrival (Houston is 1 h behind Dulles). Times are local. Both flew on 50 of the last 56 days.

Makes the connection98%The first flight arrived more than 141 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 51m layover.
Arrives on time85%First flight not cancelled (2.6% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (89%).
Total trip7h 47mIAD 06:00 to IAH 12:47, 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.