Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Denver via Austin: arrives on time 15%
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12:50 SFO → 18:20 AUSWN 3633 · Southwest · 3h 30m · 12% on time, 0.0% cancelled
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1h 10m layover in Austin (AUS) · 45 min minimum on one ticket
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19:30 AUS → 21:05 DENWN 294 · Southwest · 2h 30m · 71% on time, 2.9% cancelled
Total trip 7h 10m, scheduled departure to arrival (Denver is 1 h ahead of San Francisco). Times are local. Both flew on 40 of the last 56 days.
Makes the connection21%The first flight arrived more than 25 minutes late on 79% of the days it flew: too late for the 45-minute minimum connection on a 1h 10m layover.
Arrives on time15%First flight not cancelled (0.0% are) × connection made (21%) × second flight not cancelled (2.9% are) and within 15 minutes (71%).
Total trip7h 10mSFO 12:50 to DEN 21:05, 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.