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

Ontario → Atlanta via Seattle: arrives on time 71%

  1. 17:59 ONT → 20:50 SEA
    DL 4031 · Delta, flown by SkyWest · 2h 51m · 90% on time, 0.3% cancelled
  2. 55m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 21:45 SEA → 05:36 ATL +1 day
    DL 567 · Delta · 4h 51m · 84% on time, 1.1% cancelled

Total trip 8h 37m, scheduled departure to arrival (Atlanta is 3 h ahead of Ontario). Times are local. Both flew on 46 of the last 56 days.

Makes the connection86%The first flight arrived more than 10 minutes late on 14% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time71%First flight not cancelled (0.3% are) × connection made (86%) × second flight not cancelled (1.1% are) and within 15 minutes (84%).
Total trip8h 37mONT 17:59 to ATL 05:36, 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.