Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Chicago via Philadelphia: arrives on time 86%
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23:20 SFO → 07:50 PHLUA 2854 · United · 5h 30m · 83% on time, 0.0% cancelled
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3h 32m layover in Philadelphia (PHL) · 90 min minimum on separate tickets
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11:22 PHL → 12:32 MDW +1 dayWN 3224 · Southwest · 2h 10m · 88% on time, 2.0% cancelled
Total trip 11h 12m, scheduled departure to arrival (Chicago is 2 h ahead of San Francisco). Times are local. Both flew on 48 of the last 56 days.
Makes the connection100%The first flight arrived more than 122 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 32m layover.
Arrives on time86%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (2.0% are) and within 15 minutes (88%).
Total trip11h 12mSFO 23:20 to MDW 12:32, 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.