Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Boise via San Diego: arrives on time 53%
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05:52 MDW → 08:00 SANWN 3103 · Southwest · 4h 08m · 94% on time, 0.0% cancelled
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48m layover in San Diego (SAN) · 45 min minimum on one ticket
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08:48 SAN → 11:58 BOIWN 4873 · Southwest · 2h 10m · 76% on time, 0.0% cancelled
Total trip 7h 06m, scheduled departure to arrival (Boise is 1 h behind Chicago). Times are local. Both flew on 32 of the last 56 days.
Makes the connection70%The first flight arrived more than 3 minutes late on 30% of the days it flew: too late for the 45-minute minimum connection on a 48m layover.
Arrives on time53%First flight not cancelled (0.0% are) × connection made (70%) × second flight not cancelled (0.0% are) and within 15 minutes (76%).
Total trip7h 06mMDW 05:52 to BOI 11:58, 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.