Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Boise via Seattle: arrives on time 80%
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10:40 MDW → 13:10 SEAWN 1340 · Southwest · 4h 30m · 50% on time, 0.0% cancelled
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2h 35m layover in Seattle (SEA) · 90 min minimum on separate tickets
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15:45 SEA → 18:11 BOIAS 2061 · Alaska, flown by Horizon · 1h 26m · 90% on time, 0.0% cancelled
Total trip 8h 31m, scheduled departure to arrival (Boise is 1 h behind Chicago). Times are local. Both flew on 23 of the last 56 days.
Makes the connection88%The first flight arrived more than 65 minutes late on 12% of the days it flew: too late for the 90-minute minimum connection on a 2h 35m layover.
Arrives on time80%First flight not cancelled (0.0% are) × connection made (88%) × second flight not cancelled (0.0% are) and within 15 minutes (90%).
Total trip8h 31mMDW 10:40 to BOI 18:11, 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.