Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Missoula via Seattle: arrives on time 36%
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17:42 ORD → 20:21 SEAAS 337 · Alaska · 4h 39m · 49% on time, 6.3% cancelled
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1h 06m layover in Seattle (SEA) · 45 min minimum on one ticket
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21:27 SEA → 23:56 MSOAS 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.