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

Houston → Ontario via Atlanta: arrives on time 66%

  1. 14:43 IAH → 17:54 ATL
    DL 1572 · Delta · 2h 13m · 80% on time, 1.3% cancelled
  2. 2h 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 9h 07m, scheduled departure to arrival (Ontario is 2 h behind Houston). Times are local. Both flew on 42 of the last 56 days.

Makes the connection95%The first flight arrived more than 106 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 2h 31m layover.
Arrives on time66%First flight not cancelled (1.3% are) × connection made (95%) × second flight not cancelled (1.6% are) and within 15 minutes (71%).
Total trip9h 07mIAH 14:43 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.