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

Chicago → Ontario via Dallas-Fort Worth: arrives on time 23%

  1. 19:26 ORD → 22:08 DFW
    AA 3544 · American, flown by Envoy · 2h 42m · 73% on time, 5.7% cancelled
  2. 47m layover in Dallas-Fort Worth (DFW) · 45 min minimum on one ticket
  3. 22:55 DFW → 23:59 ONT +1 day
    AA 1534 · American · 3h 07m · 39% on time, 2.7% cancelled

Total trip 6h 36m, scheduled departure to arrival (Ontario is 2 h behind Chicago). Times are local. Both flew on 53 of the last 56 days.

Makes the connection64%The first flight arrived more than 2 minutes late on 36% of the days it flew: too late for the 45-minute minimum connection on a 47m layover.
Arrives on time23%First flight not cancelled (5.7% are) × connection made (64%) × second flight not cancelled (2.7% are) and within 15 minutes (39%).
Total trip6h 36mORD 19:26 to ONT 23:59, 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.