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1,502 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: airlines and hours on this route all land within a few points of 4 in 5 on time.

Best time to leave 9–10 am 92% arrive on time from DEN
Best single flight UA 1978 DEN 09:40 → CVG 14:27 · 93% on time Avoid UA 1615 DEN 17:40 → CVG 22:28 · 76% 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).

9
10
11
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14
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DEN
82
63
65
% 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
Hebron flights leaving DEN 9–10 am: 1Close ×
UA 1978 DEN 09:40 CVG 14:27 2h 47m 343 93% 0.6% 73 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 727 84% 0.6% 60 min
Frontier 384 80% 1.0% 64 min
Southwest 364 70% 1.4% 48 min
Allegiant 27 – 0.0% 68 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 1978 DEN 09:40 CVG 14:27 93%
F9 3286 DEN 14:47 CVG 19:31 82%
UA 1615 DEN 17:40 CVG 22:28 76%
All 6 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.

United DEN CVG 2h 47m 84% 0.6% 727 Flying now
Frontier DEN CVG 2h 44m 80% 1.0% 384 Flying now
Southwest DEN CVG 2h 35m 70% 1.4% 364 Flying now
Allegiant DEN CVG 2h 45m 70%few flights 0.0% 27 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