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Route on-time record

DEN to CVG: most on-time flights and the best time to fly

Denver (Denver International Airport) to Cincinnati / Covington (Cincinnati Northern Kentucky International Airport). 1,529 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was United 1978 at 9:40 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

DEN → CVG

Denver to Cincinnati / Covington: 1,529 nonstop flights a year

On time (12 months)

77%

Cancelled

0.9%

avg delay 16 min

Best time to leave

9 AM to noon

90% on time vs 62% 6 to 9 PM

Most reliable airline

United

80% chance on time

Check DEN to CVG fares

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. #1 · United 1978

    9:40 AM → 2:30 PM2h 46m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    92%

    chance on time

    On time (history)
    93%
    Cancelled
    0.6%
    Avg arrival delay
    5 min
    • Arrived on time 93% of the time (340 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 90% on time; 6 to 9 PM: 62%).
    • Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).

    Strong track record · 340 flights

    Find United 1978 fares Opens this date on Aviasales

  2. #2 · Frontier 3286

    9:40 AM → 2:24 PM2h 45m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    80%

    chance on time

    On time (history)
    81%
    Cancelled
    2.6%
    Avg arrival delay
    16 min
    • Arrived on time 81% of the time (186 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 90% on time; 6 to 9 PM: 62%).
    • Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).

    Moderate track record · 186 flights

    Find Frontier 3286 fares Opens this date on Aviasales

  3. #3 · United 1615

    5:41 PM → 10:30 PM2h 49m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    70%

    chance on time

    On time (history)
    70%
    Cancelled
    0.5%
    Avg arrival delay
    19 min
    • Arrived on time 70% of the time (362 flights, Jun 2025 to May 2026).
    • Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
    • 53% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 362 flights

    Find United 1615 fares Opens this date on Aviasales

  4. #4 · Frontier 1752

    6:00 AM → 10:48 AM2h 48m nonstop

    Local times, typical schedule. Last flown 2026-04-12.

    69%

    chance on time

    On time (history)
    65%
    Cancelled
    0.0%
    Avg arrival delay
    25 min
    • Arrived on time 65% of the time (178 flights, Jun 2025 to May 2026).
    • Never cancelled in 178 scheduled flights.
    • Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
    • 65% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 178 flights

    Find Frontier 1752 fares Opens this date on Aviasales

  5. #5 · Southwest 1459

    3:05 PM → 7:40 PM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3267; its record covers all of them.

    63%

    chance on time

    On time (history)
    70%
    Cancelled
    0.0%
    Avg arrival delay
    16 min
    • Arrived on time 70% of the time (82 flights, Jun 2025 to May 2026).
    • Never cancelled in 82 scheduled flights.
    • Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 82 flights

    Find Southwest 1459 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines80%

    728 flights · 81% on time as flown · 0.6% cancel

  • Frontier Airlines74%

    410 flights · 74% on time as flown · 1.1% cancel

  • Southwest Airlines69%

    364 flights · 69% on time as flown · 1.2% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM81%

    85 flights · avg delay 14 min

  • 9 AM to noon90%

    550 flights · avg delay 6 min

  • Noon to 3 PM73%

    141 flights · avg delay 19 min

  • 3 to 6 PM69%

    502 flights · avg delay 20 min

  • 6 to 9 PM62%

    236 flights · avg delay 25 min

Best day: Wednesday (80%). Worst: Sunday (72%).

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.

J
79
F
83
M
78
A
81
M
76
J
64
J
65
A
74
S
77
O
83
N
83
D
76

What delays this route

  • Late-arriving aircraft53%
  • Airline (crew, maintenance, boarding)28%
  • Air traffic control and airport volume15%
  • 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

Finding the most reliable connections from DEN to CVG…

DEN to CVG questions

What time of day is best to fly DEN to CVG?
9 AM to noon: 90% of flights arrived on time, against 62% for departures 6 to 9 PM.
Which airline is most on time from DEN to CVG?
United, with a season-adjusted 80% 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 DEN to CVG?
June (64% on time); the best was November (83%), 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 DEN

Live status: FAA delays and ground stops