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

Houston → Ontario via Atlanta: arrives on time 48%

  1. 10:16 HOU → 13:20 ATL
    DL 1509 · Delta · 2h 04m · 88% on time, 3.0% cancelled
  2. 3h 39m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 16:59 ATL → 18:30 ONT
    DL 2891 · Delta · 4h 31m · 50% on time, 0.0% cancelled

Total trip 10h 14m, scheduled departure to arrival (Ontario is 2 h behind Houston). Times are local. Both flew on 54 of the last 56 days.

Makes the connection99%The first flight arrived more than 174 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 39m layover.
Arrives on time48%First flight not cancelled (3.0% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (50%).
Total trip10h 14mHOU 10:16 to ONT 18:30, 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.