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

Ontario → Atlanta via Chicago: arrives on time 45%

  1. 07:00 ONT → 13:03 ORD
    UA 2226 · United · 4h 03m · 76% on time, 0.0% cancelled
  2. 52m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 13:55 ORD → 17:10 ATL
    UA 356 · United · 2h 15m · 75% on time, 2.2% cancelled

Total trip 7h 10m, scheduled departure to arrival (Atlanta is 3 h ahead of Ontario). Times are local. Both flew on 0 of the last 56 days, too few to list among the best connections.

Makes the connection61%The first flight arrived more than 7 minutes late on 39% of the days it flew: too late for the 45-minute minimum connection on a 52m layover.
Arrives on time45%First flight not cancelled (0.0% are) × connection made (61%) × second flight not cancelled (2.2% are) and within 15 minutes (75%).
Total trip7h 10mONT 07:00 to ATL 17:10, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.