Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
New York → Ontario via Atlanta: arrives on time 49%
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10:59 LGA → 13:20 ATLDL 993 · Delta · 2h 21m · 83% on time, 1.4% cancelled
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3h 39m layover in Atlanta (ATL) · 45 min minimum on one ticket
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16:59 ATL → 18:30 ONTDL 2891 · Delta · 4h 31m · 50% on time, 0.0% cancelled
Total trip 10h 31m, scheduled departure to arrival (Ontario is 3 h behind New York). Times are local. Both flew on 54 of the last 56 days.
Makes the connection99%The first flight arrived more than 174 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 39m layover.
Arrives on time49%First flight not cancelled (1.4% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (50%).
Total trip10h 31mLGA 10:59 to ONT 18:30, 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.