CVG to IAH flight delays & on-time performance
Nonstop flights from Cincinnati Northern Kentucky International Airport to George Bush Intercontinental Airport · 871 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at CVG or IAH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Cincinnati (CVG) to Houston (IAH) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.7% were cancelled, and 6% arrived an hour or more late.
- Departures scheduled around 7am did best (92% on time); around 5pm did worst (73%).
- Thursday was the most reliable day to fly (88% on time) and Friday the least (77%).
- The largest source of delay minutes was air traffic control & airport congestion (42%).
Which airline is most on time from CVG to IAH?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 84% | 0.8% | 12 min | 6.2% | 649 |
| Frontier Airlines | 71% | 0.0% | 17 min | 5.9% | 34 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 50% | 0.0% | 28 min | 25.0% | 8 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am91%238 flights
- 7am92%122 flights
- 12pm76%17 flights
- 4pm76%70 flights
- 5pm73%224 flights
- 6pm45%11 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday84%1.0% cancelled
- Tuesday87%1.1% cancelled
- Wednesday83%0.0% cancelled
- Thursday88%0.0% cancelled
- Friday77%0.0% cancelled
- Saturday79%0.0% cancelled
- Sunday80%2.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion42%
- Airline (crew, maintenance, cleaning, fueling)31%
- Late-arriving aircraft25%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather80%
- Airline (crew, maintenance, cleaning, fueling)20%
- Air traffic control & airport congestion0%
- Security0%
CVG to IAH: common questions
- How often are CVG to IAH flights on time?
- 83% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Cincinnati to Houston cancelled?
- 0.7% of scheduled flights were cancelled (5 of 691).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 67 min behind schedule on average, and 6.4% of flights were an hour or more late.
- How long is taxi time at CVG?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAH to CVG — 75% on time
More flights from Cincinnati
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: CVG → IAH, nonstop flights by US airlines that report to the DOT. How we calculate this.