Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Buffalo via Atlanta: arrives on time 66%
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17:51 IAD → 19:54 ATLDL 1695 · Delta · 2h 08m · 74% on time, 2.0% cancelled
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1h 55m layover in Atlanta (ATL) · 45 min minimum on one ticket
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21:49 ATL → 23:59 BUFDL 2334 · Delta · 2h 10m · 77% on time, 1.9% cancelled
Total trip 6h 08m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.
Makes the connection90%The first flight arrived more than 70 minutes late on 10% of the days it flew: too late for the 45-minute minimum connection on a 1h 55m layover.
Arrives on time66%First flight not cancelled (2.0% are) × connection made (90%) × second flight not cancelled (1.9% are) and within 15 minutes (77%).
Total trip6h 08mIAD 17:51 to BUF 23:59, 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.