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

Ontario → Atlanta via Seattle: arrives on time 87%

  1. 17:59 ONT → 20:50 SEA
    DL 4031 · Delta, flown by SkyWest · 2h 51m · 90% on time, 0.3% cancelled
  2. 3h 09m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 23:59 SEA → 07:46 ATL +1 day
    DL 652 · Delta · 4h 47m · 89% on time, 0.6% cancelled

Total trip 10h 47m, scheduled departure to arrival (Atlanta is 3 h ahead of Ontario). Times are local. Both flew on 55 of the last 56 days.

Makes the connection98%The first flight arrived more than 144 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 3h 09m layover.
Arrives on time87%First flight not cancelled (0.3% are) × connection made (98%) × second flight not cancelled (0.6% are) and within 15 minutes (89%).
Total trip10h 47mONT 17:59 to ATL 07:46, 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.