Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Grand Rapids via Atlanta: arrives on time 74%
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13:55 ORD → 17:10 ATLUA 356 · United · 2h 15m · 75% on time, 2.2% cancelled
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2h 44m layover in Atlanta (ATL) · 90 min minimum on separate tickets
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19:54 ATL → 21:51 GRRDL 2210 · Delta · 1h 57m · 80% on time, 0.4% cancelled
Total trip 6h 56m, scheduled departure to arrival (Grand Rapids is 1 h ahead of Chicago). Times are local. Both flew on 42 of the last 56 days.
Makes the connection94%The first flight arrived more than 74 minutes late on 6% of the days it flew: too late for the 90-minute minimum connection on a 2h 44m layover.
Arrives on time74%First flight not cancelled (2.2% are) × connection made (94%) × second flight not cancelled (0.4% are) and within 15 minutes (80%).
Total trip6h 56mORD 13:55 to GRR 21:51, 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.