Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Miami → Seattle via San Francisco: arrives on time 65%
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08:00 MIA → 11:03 SFOUA 1257 · United · 6h 03m · 90% on time, 0.7% cancelled
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1h 07m layover in San Francisco (SFO) · 45 min minimum on one ticket
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12:10 SFO → 14:30 SEAUA 2744 · United · 2h 20m · 72% on time, 1.3% cancelled
Total trip 9h 30m, scheduled departure to arrival (Seattle is 3 h behind Miami). Times are local. Both flew on 43 of the last 56 days.
Makes the connection93%The first flight arrived more than 22 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 07m layover.
Arrives on time65%First flight not cancelled (0.7% are) × connection made (93%) × second flight not cancelled (1.3% are) and within 15 minutes (72%).
Total trip9h 30mMIA 08:00 to SEA 14:30, 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.