Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
New York → Ontario via Atlanta: arrives on time 68%
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13:59 LGA → 16:30 ATLDL 988 · Delta · 2h 30m · 76% on time, 1.2% cancelled
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3h 55m layover in Atlanta (ATL) · 45 min minimum on one ticket
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20:25 ATL → 21:50 ONTDL 779 · Delta · 4h 25m · 71% on time, 1.6% cancelled
Total trip 10h 51m, scheduled departure to arrival (Ontario is 3 h behind New York). Times are local. Both flew on 41 of the last 56 days.
Makes the connection99%The first flight arrived more than 190 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 55m layover.
Arrives on time68%First flight not cancelled (1.2% are) × connection made (99%) × second flight not cancelled (1.6% are) and within 15 minutes (71%).
Total trip10h 51mLGA 13:59 to ONT 21:50, 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.