Route on-time record
IAH to CVG: most on-time flights and the best time to fly
Houston (George Bush Intercontinental Airport) to Cincinnati / Covington (Cincinnati Northern Kentucky International Airport). 686 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was United 2364 at 12:25 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
IAH → CVG
Houston to Cincinnati / Covington: 686 nonstop flights a year
On time (12 months)
76%
Cancelled
1.0%
avg delay 16 min
Best time to leave
Before 9 AM
95% on time vs 68% 6 to 9 PM
Most reliable airline
United
75% chance on time
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 · United 2364
12:25 PM → 3:57 PM2h 32m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 323; its record covers all of them.
82%
chance on time
- On time (history)
- 82%
- Cancelled
- 1.7%
- Avg arrival delay
- 9 min
- Arrived on time 82% of the time (57 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
Limited track record · 57 flights
Find United 2364 fares Opens this date on Aviasales#2 · United 2069
8:00 PM → 11:30 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 68%
- Cancelled
- 1.2%
- Avg arrival delay
- 22 min
- Arrived on time 68% of the time (319 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 95%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
- 66% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 319 flights
Find United 2069 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines75%
631 flights · 76% on time as flown · 1.0% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
45 flights · avg delay 9 min
- Noon to 3 PM85%
264 flights · avg delay 9 min
- 6 to 9 PM68%
363 flights · avg delay 21 min
Best day: Tuesday (79%). Worst: Sunday (69%).
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 aircraft66%
- Airline (crew, maintenance, boarding)19%
- Air traffic control and airport volume11%
- Severe weather3%
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
IAH to CVG questions
- What time of day is best to fly IAH to CVG?
- Before 9 AM: 95% of flights arrived on time, against 68% 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 IAH to CVG?
- United, with a season-adjusted 75% chance of operating and arriving on time over 631 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 IAH to CVG?
- July (56% on time); the best was January (85%), 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 IAH
- CVG to IAH (return)
- IAH to ORD 75%
- IAH to DFW 75%
- IAH to LAX 83%
- IAH to ATL 77%
- IAH to DEN 81%
- IAH to LGA 72%
- IAH to EWR 74%
- IAH to MIA 78%
- IAH to MCO 81%
- IAH to SFO 79%
- IAH to LAS 82%
- IAH to DCA 75%
Most on-time flights from IAH on every route →
Live status: FAA delays and ground stops