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

Boise → Denver via Seattle: arrives on time 51%

  1. 10:00 BOI → 10:34 SEA
    AS 2166 · Alaska, flown by Horizon · 1h 34m · 44% on time, 0.0% cancelled
  2. 1h 10m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 11:44 SEA → 15:38 DEN
    AS 535 · Alaska · 2h 54m · 78% on time, 0.9% cancelled

Total trip 5h 38m, scheduled departure to arrival. Times are local. Both flew on 52 of the last 56 days.

Makes the connection65%The first flight arrived more than 25 minutes late on 35% of the days it flew: too late for the 45-minute minimum connection on a 1h 10m layover.
Arrives on time51%First flight not cancelled (0.0% are) × connection made (65%) × second flight not cancelled (0.9% are) and within 15 minutes (78%).
Total trip5h 38mBOI 10:00 to DEN 15:38, 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.