Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Philadelphia via Chicago: arrives on time 53%
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23:08 SFO → 05:29 ORDAA 2554 · American · 4h 15m · 73% on time, 1.4% cancelled
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1h 07m layover in Chicago (ORD) · 45 min minimum on one ticket
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06:36 ORD → 09:46 PHL +1 dayAA 2115 · American · 2h 11m · 76% on time, 5.6% cancelled
Total trip 7h 39m, scheduled departure to arrival (Philadelphia is 3 h ahead of San Francisco). Times are local. Both flew on 55 of the last 56 days.
Makes the connection74%The first flight arrived more than 22 minutes late on 26% of the days it flew: too late for the 45-minute minimum connection on a 1h 07m layover.
Arrives on time53%First flight not cancelled (1.4% are) × connection made (74%) × second flight not cancelled (5.6% are) and within 15 minutes (76%).
Total trip7h 39mSFO 23:08 to PHL 09:46, 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.