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

Chicago → Missoula via Seattle: arrives on time 36%

  1. 17:42 ORD → 20:21 SEA
    AS 337 · Alaska · 4h 39m · 49% on time, 6.3% cancelled
  2. 1h 06m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 21:27 SEA → 23:56 MSO
    AS 560 · Alaska · 1h 29m · 72% on time, 0.0% cancelled

Total trip 7h 14m, scheduled departure to arrival (Missoula is 1 h behind Chicago). Times are local. Both flew on 22 of the last 56 days.

Makes the connection54%The first flight arrived more than 21 minutes late on 46% of the days it flew: too late for the 45-minute minimum connection on a 1h 06m layover.
Arrives on time36%First flight not cancelled (6.3% are) × connection made (54%) × second flight not cancelled (0.0% are) and within 15 minutes (72%).
Total trip7h 14mORD 17:42 to MSO 23:56, 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.