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

Boston → Portland via Seattle: arrives on time 45%

  1. 17:56 BOS → 21:26 SEA
    AS 304 · Alaska · 6h 30m · 66% on time, 0.0% cancelled
  2. 1h 03m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 22:29 SEA → 23:30 PDX
    AS 1457 · Alaska · 1h 01m · 67% on time, 0.0% cancelled

Total trip 8h 34m, scheduled departure to arrival (Portland is 3 h behind Boston). Times are local. Both flew on 52 of the last 56 days.

Makes the connection67%The first flight arrived more than 18 minutes late on 33% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time45%First flight not cancelled (0.0% are) × connection made (67%) × second flight not cancelled (0.0% are) and within 15 minutes (67%).
Total trip8h 34mBOS 17:56 to PDX 23:30, 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.