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

Ontario → Seattle via San Francisco: arrives on time 7%

  1. 18:39 ONT → 20:07 SFO
    UA 5624 · United, flown by SkyWest · 1h 28m · 16% on time, 1.6% cancelled
  2. 47m layover in San Francisco (SFO) · 45 min minimum on one ticket
  3. 20:54 SFO → 23:19 SEA
    UA 1007 · United · 2h 25m · 66% on time, 0.5% cancelled

Total trip 4h 40m, scheduled departure to arrival. Times are local. Both flew on 46 of the last 56 days.

Makes the connection10%The first flight arrived more than 2 minutes late on 90% of the days it flew: too late for the 45-minute minimum connection on a 47m layover.
Arrives on time7%First flight not cancelled (1.6% are) × connection made (10%) × second flight not cancelled (0.5% are) and within 15 minutes (66%).
Total trip4h 40mONT 18:39 to SEA 23:19, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.