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

Dulles → Knoxville via Atlanta: arrives on time 75%

  1. 17:17 IAD → 19:16 ATL
    UA 2081 · United · 1h 59m · 70% on time, 0.6% cancelled
  2. 3h 37m layover in Atlanta (ATL) · 90 min minimum on separate tickets
  3. 22:53 ATL → 23:54 TYS
    DL 3072 · Delta · 1h 01m · 81% on time, 1.6% cancelled

Total trip 6h 37m, scheduled departure to arrival. Times are local. Both flew on 32 of the last 56 days.

Makes the connection95%The first flight arrived more than 127 minutes late on 5% of the days it flew: too late for the 90-minute minimum connection on a 3h 37m layover.
Arrives on time75%First flight not cancelled (0.6% are) × connection made (95%) × second flight not cancelled (1.6% are) and within 15 minutes (81%).
Total trip6h 37mIAD 17:17 to TYS 23:54, 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.