Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
New York → Dulles via Atlanta: arrives on time 70%
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11:59 LGA → 14:20 ATLDL 990 · Delta · 2h 21m · 83% on time, 4.5% cancelled
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4h 55m layover in Atlanta (ATL) · 45 min minimum on one ticket
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19:15 ATL → 21:03 IADDL 1309 · Delta · 1h 49m · 76% on time, 2.5% cancelled
Total trip 9h 05m, scheduled departure to arrival. Times are local. Both flew on 45 of the last 56 days.
Makes the connection99%The first flight arrived more than 250 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 4h 55m layover.
Arrives on time70%First flight not cancelled (4.5% are) × connection made (99%) × second flight not cancelled (2.5% are) and within 15 minutes (76%).
Total trip9h 05mLGA 11:59 to IAD 21:03, 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.