Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Newark via Boston: arrives on time 41%
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17:25 IAD → 19:14 BOSUA 688 · United · 1h 49m · 63% on time, 3.3% cancelled
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1h 12m layover in Boston (BOS) · 45 min minimum on one ticket
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20:26 BOS → 21:59 EWRUA 2060 · United · 1h 33m · 64% on time, 6.4% cancelled
Total trip 4h 34m, scheduled departure to arrival. Times are local. Both flew on 47 of the last 56 days.
Makes the connection71%The first flight arrived more than 27 minutes late on 29% of the days it flew: too late for the 45-minute minimum connection on a 1h 12m layover.
Arrives on time41%First flight not cancelled (3.3% are) × connection made (71%) × second flight not cancelled (6.4% are) and within 15 minutes (64%).
Total trip4h 34mIAD 17:25 to EWR 21:59, 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.