Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Denver via Dallas: arrives on time 11%
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15:10 SFO → 20:45 DALWN 1859 · Southwest · 3h 35m · 17% on time, 0.0% cancelled
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1h 00m layover in Dallas (DAL) · 45 min minimum on one ticket
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21:45 DAL → 22:55 DENWN 1305 · Southwest · 2h 15m · 62% on time, 0.0% cancelled
Total trip 6h 50m, scheduled departure to arrival (Denver is 1 h ahead of San Francisco). Times are local. Both flew on 32 of the last 56 days.
Makes the connection17%The first flight arrived more than 15 minutes late on 83% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time11%First flight not cancelled (0.0% are) × connection made (17%) × second flight not cancelled (0.0% are) and within 15 minutes (62%).
Total trip6h 50mSFO 15:10 to DEN 22:55, 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.