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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
12
13
14
15
16
17
18
19
20
DEN
93
82
77
74
48
81
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

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

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 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.
G4 394 DEN 07:46 CVG 12:31 2h 45m 21 67% 0.0% 75 min
UA 1978 DEN 09:40 CVG 14:27 2h 47m 343 93% 0.6% 73 min
WN 1247 DEN 11:15 CVG 15:50 2h 35m 16 94% 0.0% 24 min
F9 3286 DEN 14:47 CVG 19:31 2h 44m 226 82% 1.8% 73 min
WN 1251 DEN 15:10 CVG 19:45 2h 35m 34 35% 0.0% 49 min
UA 1615 DEN 17:40 CVG 22:28 2h 48m 363 76% 0.6% 57 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 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