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Showing United only (incl. its regional partners)All airlines ×
2,735 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 86% depart on time. After 4 pm it’s 73%.

Best time to leave 6–7 am 86% arrive on time from GRR
Best single flight UA 4583 GRR 11:38 → ORD 11:58 · 73% on time Avoid UA 2099 GRR 07:15 → ORD 07:28 · 71% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

6
7
8
9
10
11
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13
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GRR
87
85
82
74
83
83
76
72
72
79
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
UA 4583flown by GoJet GRR 11:38 ORD 11:58 73%
UA 2099 GRR 07:15 ORD 07:28 71%

All 16 United flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
UA 5615flown by SkyWest GRR 05:15 ORD 05:33 1h 18m 31 87% 3.2% 141 min
UA 4458flown by GoJet GRR 06:00 ORD 06:17 1h 17m 25 92% 0.0% 34 min
UA 3651flown by Republic GRR 06:00 ORD 06:18 1h 18m 63 86% 0.0% 112 min
UA 2137 GRR 07:15 ORD 07:28 1h 13m 30 71% 6.7% 60 min
UA 2099 GRR 07:15 ORD 07:28 1h 13m 327 71% 0.3% 66 min
UA 5690flown by SkyWest GRR 08:49 ORD 09:08 1h 19m 21 90% 0.0% 151 min
UA 4561flown by GoJet GRR 11:38 ORD 11:58 1h 20m 35 89% 0.0% 142 min
UA 4583flown by GoJet GRR 11:38 ORD 11:58 1h 20m 180 73% 2.2% 88 min
UA 5517flown by SkyWest GRR 12:57 ORD 13:15 1h 18m 32 84% 0.0% 410 min
UA 2138 GRR 13:56 ORD 14:05 1h 09m 103 70% 0.0% 117 min
UA 4597flown by GoJet GRR 15:37 ORD 15:56 1h 19m 27 64% 7.4% 51 min
UA 4417flown by GoJet GRR 15:37 ORD 15:56 1h 19m 24 86% 12.5% 113 min
UA 533 GRR 16:56 ORD 17:05 1h 09m 10 20% 0.0% 24 min
UA 5516flown by SkyWest GRR 18:25 ORD 18:48 1h 23m 56 51% 5.4% 76 min
UA 1866 GRR 18:45 ORD 19:00 1h 15m 24 43% 4.2% 92 min
UA 4415flown by GoJet GRR 20:00 ORD 20:28 1h 28m 24 71% 12.5% 78 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
United GRR ORD 1h 17m 69% 2.5% 2,735 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON