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

Chicago → Chattanooga via Atlanta: arrives on time 47%

  1. 15:22 ORD → 18:36 ATL
    DL 1477 · Delta · 2h 13m · 76% on time, 1.7% cancelled
  2. 1h 09m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 19:45 ATL → 20:46 CHA
    DL 4722 · Delta, flown by Endeavor · 1h 02m · 63% on time, 5.5% cancelled

Total trip 4h 25m, scheduled departure to arrival (Chattanooga is 1 h ahead of Chicago). Times are local. Both flew on 54 of the last 56 days.

Makes the connection79%The first flight arrived more than 24 minutes late on 21% of the days it flew: too late for the 45-minute minimum connection on a 1h 09m layover.
Arrives on time47%First flight not cancelled (1.7% are) × connection made (79%) × second flight not cancelled (5.5% are) and within 15 minutes (63%).
Total trip4h 25mORD 15:22 to CHA 20:46, 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.