Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boston → Portland via Dulles: arrives on time 63%
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14:15 BOS → 15:57 IADUA 721 · United · 1h 42m · 78% on time, 2.9% cancelled
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1h 43m layover in Dulles (IAD) · 45 min minimum on one ticket
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17:40 IAD → 20:19 PDXUA 780 · United · 5h 39m · 72% on time, 1.2% cancelled
Total trip 9h 04m, scheduled departure to arrival (Portland is 3 h behind Boston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection91%The first flight arrived more than 58 minutes late on 9% of the days it flew: too late for the 45-minute minimum connection on a 1h 43m layover.
Arrives on time63%First flight not cancelled (2.9% are) × connection made (91%) × second flight not cancelled (1.2% are) and within 15 minutes (72%).
Total trip9h 04mBOS 14:15 to PDX 20:19, 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.