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1,234 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 77%.

Best time to leave 5–6 am 88% arrive on time from GRR
Best single flight UA 2648 GRR 08:00 → DEN 08:54 · 77% 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).

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GRR
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% 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
Denver flights leaving GRR 8–9 pm: 1Close ×
F9 1247 GRR 20:29 DEN 21:29 3h 00m 125 84% 0.0% 74 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.

United (incl. SkyWest) 728 79% 0.4% 87 min
Southwest 359 76% 0.3% 62 min
Frontier 147 – 0.0% 94 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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 2648 GRR 08:00 DEN 08:54 77%
All 5 flights on this route →

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.

Frontier GRR DEN 3h 00m 80% 0.0% 147 Flying now
United GRR DEN 3h 01m 79% 0.4% 728 Flying now
Southwest GRR DEN 2h 55m 76% 0.3% 359 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