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

Ontario → Houston via Atlanta: arrives on time 63%

  1. 11:50 ONT → 19:11 ATL
    DL 665 · Delta · 4h 21m · 85% on time, 1.6% cancelled
  2. 1h 10m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 20:21 ATL → 21:34 IAH
    DL 1284 · Delta · 2h 13m · 73% on time, 2.0% cancelled

Total trip 7h 44m, scheduled departure to arrival (Houston is 2 h ahead of Ontario). Times are local. Both flew on 56 of the last 56 days.

Makes the connection89%The first flight arrived more than 25 minutes late on 11% of the days it flew: too late for the 45-minute minimum connection on a 1h 10m layover.
Arrives on time63%First flight not cancelled (1.6% are) × connection made (89%) × second flight not cancelled (2.0% are) and within 15 minutes (73%).
Total trip7h 44mONT 11:50 to IAH 21:34, 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.