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

Boise → Ontario via Seattle: arrives on time 86%

  1. 10:36 BOI → 11:41 SEA
    DL 3750 · Delta, flown by SkyWest · 2h 05m · 92% on time, 0.5% cancelled
  2. 2h 54m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 14:35 SEA → 17:19 ONT
    DL 4031 · Delta, flown by SkyWest · 2h 44m · 88% on time, 0.3% cancelled

Total trip 7h 43m, scheduled departure to arrival (Ontario is 1 h behind Boise). Times are local. Both flew on 55 of the last 56 days.

Makes the connection98%The first flight arrived more than 129 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 2h 54m layover.
Arrives on time86%First flight not cancelled (0.5% are) × connection made (98%) × second flight not cancelled (0.3% are) and within 15 minutes (88%).
Total trip7h 43mBOI 10:36 to ONT 17:19, 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.