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

Dulles → Las Vegas via Houston: arrives on time 83%

  1. 08:40 IAD → 10:59 IAH
    UA 1524 · United · 3h 19m · 89% on time, 0.6% cancelled
  2. 3h 21m layover in Houston (IAH) · 45 min minimum on one ticket
  3. 14:20 IAH → 15:37 LAS
    UA 1971 · United · 3h 17m · 85% on time, 0.0% cancelled

Total trip 9h 57m, scheduled departure to arrival (Las Vegas is 3 h behind Dulles). Times are local. Both flew on 55 of the last 56 days.

Makes the connection99%The first flight arrived more than 156 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 21m layover.
Arrives on time83%First flight not cancelled (0.6% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (85%).
Total trip9h 57mIAD 08:40 to LAS 15:37, 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.