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

Atlanta → Ontario via Seattle: arrives on time 63%

  1. 07:00 ATL → 09:26 SEA
    AS 377 · Alaska · 5h 26m · 86% on time, 0.3% cancelled
  2. 59m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 10:25 SEA → 13:09 ONT
    AS 565 · Alaska · 2h 44m · 76% on time, 2.2% cancelled

Total trip 9h 09m, scheduled departure to arrival (Ontario is 3 h behind Atlanta). Times are local. Both flew on 38 of the last 56 days.

Makes the connection85%The first flight arrived more than 14 minutes late on 15% of the days it flew: too late for the 45-minute minimum connection on a 59m layover.
Arrives on time63%First flight not cancelled (0.3% are) × connection made (85%) × second flight not cancelled (2.2% are) and within 15 minutes (76%).
Total trip9h 09mATL 07:00 to ONT 13:09, 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.