Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Denver via Chicago: arrives on time 21%
-
14:36 SFO → 21:26 ORDAA 2550 · American · 4h 51m · 37% on time, 2.8% cancelled
-
1h 08m layover in Chicago (ORD) · 45 min minimum on one ticket
-
22:34 ORD → 00:17 DEN +1 dayAA 1387 · American · 2h 42m · 57% on time, 3.4% cancelled
Total trip 8h 40m, scheduled departure to arrival (Denver is 1 h ahead of San Francisco). Times are local. Both flew on 56 of the last 56 days.
Makes the connection40%The first flight arrived more than 23 minutes late on 60% of the days it flew: too late for the 45-minute minimum connection on a 1h 08m layover.
Arrives on time21%First flight not cancelled (2.8% are) × connection made (40%) × second flight not cancelled (3.4% are) and within 15 minutes (57%).
Total trip8h 40mSFO 14:36 to DEN 00:17, 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.