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

Dulles → St Louis via Atlanta: arrives on time 87%

  1. 08:15 IAD → 10:14 ATL
    UA 2739 · United · 1h 59m · 89% on time, 0.4% cancelled
  2. 3h 55m layover in Atlanta (ATL) · 90 min minimum on separate tickets
  3. 14:09 ATL → 14:48 STL
    DL 2700 · Delta · 1h 41m · 90% on time, 1.3% cancelled

Total trip 7h 35m, scheduled departure to arrival (St Louis is 1 h behind Dulles). Times are local. Both flew on 31 of the last 56 days.

Makes the connection98%The first flight arrived more than 145 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 55m layover.
Arrives on time87%First flight not cancelled (0.4% are) × connection made (98%) × second flight not cancelled (1.3% are) and within 15 minutes (90%).
Total trip7h 35mIAD 08:15 to STL 14:48, 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.