Route on-time record
CVG to DEN: most on-time flights and the best time to fly
Cincinnati / Covington (Cincinnati Northern Kentucky International Airport) to Denver (Denver International Airport). 1,531 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was Frontier 3725 at 7:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CVG → DEN
Cincinnati / Covington to Denver: 1,531 nonstop flights a year
On time (12 months)
81%
Cancelled
1.0%
avg delay 16 min
Best time to leave
Before 9 AM
91% on time vs 64% 6 to 9 PM
Most reliable airline
United
84% chance on time
Lowest nonstop fare seen in the next two months: $138 (United 1666 on 2026-11-26). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Frontier 3725
7:20 AM → 8:40 AM3h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.4%
- Avg arrival delay
- 15 min
- Arrived on time 88% of the time (272 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 64%).
Strong track record · 272 flights
Find Frontier 3725 fares Opens this date on Aviasales#2 · United 1666
9:00 AM → 10:12 AM3h 12m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.8%
- Avg arrival delay
- 12 min
- Arrived on time 87% of the time (361 flights, Jun 2025 to May 2026).
Strong track record · 361 flights
Find United 1666 fares Opens this date on Aviasales#3 · United 479
3:26 PM → 4:35 PM3h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.5%
- Avg arrival delay
- 14 min
- Arrived on time 83% of the time (354 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 354 flights
Find United 479 fares Opens this date on Aviasales#4 · Southwest 3354
2:35 PM → 3:35 PM3h 00m nonstop
Local times, typical schedule. Last flown 2026-05-30.
74%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3354 fares Opens this date on Aviasales#5 · Frontier 3285
11:58 AM → 1:07 PM3h 12m nonstop
Local times, typical schedule. Last flown 2026-05-20.
73%
chance on time
- On time (history)
- 73%
- Cancelled
- 4.0%
- Avg arrival delay
- 23 min
- Arrived on time 73% of the time (119 flights, Jun 2025 to May 2026).
- Cancelled 4.0% of the time (5 of 124).
Moderate track record · 119 flights
Find Frontier 3285 fares Opens this date on Aviasales#6 · Southwest 3895
12:30 PM → 1:30 PM3h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3230; its record covers all of them.
70%
chance on time
- On time (history)
- 72%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 72% of the time (69 flights, Jun 2025 to May 2026).
- Never cancelled in 69 scheduled flights.
Moderate track record · 69 flights
Find Southwest 3895 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines84%
728 flights · 85% on time as flown · 0.7% cancel
- Frontier Airlines81%
412 flights · 82% on time as flown · 1.3% cancel
- Southwest Airlines72%
364 flights · 72% on time as flown · 1.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
436 flights · avg delay 9 min
- 9 AM to noon83%
239 flights · avg delay 16 min
- Noon to 3 PM80%
163 flights · avg delay 11 min
- 3 to 6 PM82%
445 flights · avg delay 15 min
- 6 to 9 PM64%
237 flights · avg delay 26 min
Best day: Tuesday (84%). Worst: Friday (79%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft36%
- Airline (crew, maintenance, boarding)30%
- Air traffic control and airport volume29%
- Severe weather4%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
CVG to DEN questions
- What time of day is best to fly CVG to DEN?
- Before 9 AM: 91% of flights arrived on time, against 64% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from CVG to DEN?
- United, with a season-adjusted 84% chance of operating and arriving on time over 728 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on CVG to DEN?
- July (72% on time); the best was October (89%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from CVG
- DEN to CVG (return)
- CVG to ORD 70%
- CVG to ATL 86%
- CVG to BOS 79%
- CVG to CLT 79%
- CVG to MCO 79%
- CVG to DFW 74%
- CVG to PHL 78%
- CVG to DCA 62%
- CVG to MIA 79%
- CVG to FLL 76%
- CVG to MSP 85%
- CVG to SLC 83%
Live status: FAA delays and ground stops