Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Las Vegas → Boston via Dulles: arrives on time 87%
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23:50 LAS → 07:09 IADUA 284 · United · 4h 23m · 94% on time, 1.1% cancelled
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1h 26m layover in Dulles (IAD) · 45 min minimum on one ticket
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08:35 IAD → 10:20 BOS +1 dayUA 641 · United · 1h 45m · 92% on time, 1.5% cancelled
Total trip 7h 30m, scheduled departure to arrival (Boston is 3 h ahead of Las Vegas). Times are local. Both flew on 0 of the last 56 days, too few to list among the best connections.
Makes the connection97%The first flight arrived more than 41 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 1h 26m layover.
Arrives on time87%First flight not cancelled (1.1% are) × connection made (97%) × second flight not cancelled (1.5% are) and within 15 minutes (92%).
Total trip7h 30mLAS 23:50 to BOS 10:20, 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.