Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boise → Seattle via San Francisco: arrives on time 15%
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19:05 BOI → 19:58 SFOUA 649 · United · 1h 53m · 24% on time, 0.0% cancelled
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56m layover in San Francisco (SFO) · 45 min minimum on one ticket
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20:54 SFO → 23:19 SEAUA 1007 · United · 2h 25m · 66% on time, 0.5% cancelled
Total trip 5h 14m, scheduled departure to arrival (Seattle is 1 h behind Boise). Times are local. Both flew on 56 of the last 56 days.
Makes the connection24%The first flight arrived more than 11 minutes late on 76% of the days it flew: too late for the 45-minute minimum connection on a 56m layover.
Arrives on time15%First flight not cancelled (0.0% are) × connection made (24%) × second flight not cancelled (0.5% are) and within 15 minutes (66%).
Total trip5h 14mBOI 19:05 to SEA 23:19, 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.