Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → San Francisco via San Diego: arrives on time 76%
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10:08 MDW → 12:15 SANWN 4648 · Southwest · 4h 08m · 58% on time, 0.0% cancelled
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3h 54m layover in San Diego (SAN) · 90 min minimum on separate tickets
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16:09 SAN → 17:49 SFOUA 2117 · United · 1h 40m · 76% on time, 0.6% cancelled
Total trip 9h 41m, scheduled departure to arrival (San Francisco is 2 h behind Chicago). Times are local. Both flew on 47 of the last 56 days.
Makes the connection100%The first flight arrived more than 144 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 54m layover.
Arrives on time76%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.6% are) and within 15 minutes (76%).
Total trip9h 41mMDW 10:08 to SFO 17:49, 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.