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

Chicago → Ontario via Atlanta: arrives on time 67%

  1. 13:46 ORD → 16:54 ATL
    DL 2894 · Delta · 2h 08m · 72% on time, 0.0% cancelled
  2. 3h 31m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 20:25 ATL → 21:50 ONT
    DL 779 · Delta · 4h 25m · 71% on time, 1.6% cancelled

Total trip 10h 04m, scheduled departure to arrival (Ontario is 2 h behind Chicago). Times are local. Both flew on 42 of the last 56 days.

Makes the connection97%The first flight arrived more than 166 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 3h 31m layover.
Arrives on time67%First flight not cancelled (0.0% are) × connection made (97%) × second flight not cancelled (1.6% are) and within 15 minutes (71%).
Total trip10h 04mORD 13:46 to ONT 21:50, 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.