Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Boston via Newark: arrives on time 39%
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17:42 IAD → 19:10 EWRUA 1831 · United · 1h 28m · 59% on time, 2.7% cancelled
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1h 15m layover in Newark (EWR) · 45 min minimum on one ticket
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20:25 EWR → 21:53 BOSUA 2058 · United · 1h 28m · 61% on time, 4.8% cancelled
Total trip 4h 11m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.
Makes the connection69%The first flight arrived more than 30 minutes late on 31% of the days it flew: too late for the 45-minute minimum connection on a 1h 15m layover.
Arrives on time39%First flight not cancelled (2.7% are) × connection made (69%) × second flight not cancelled (4.8% are) and within 15 minutes (61%).
Total trip4h 11mIAD 17:42 to BOS 21:53, 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.