OnTimeStats

Historical on-time performance

Cincinnati to Houston

871 miData through Dec 2025Source: US DOT · BTS

Flights on CVG–IAH arrive on time 85% of the time over the last 12 months.

On-time rate85%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights

based on 497 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time85%
    Medianon time
    p9025 min
    Cancel1.2%
    Flights497

Why flights run late

Delay causes

  • Airline44%
  • Weather3%
  • Air traffic (NAS)38%
  • Late aircraft15%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly CVG → IAH

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 69% to 87% on time.

  • Mornings87% on time · p90 15 min · 1,190 flights
  • Middays81% on time · p90 35 min · 143 flights · limited
  • Evenings73% on time · p90 65 min · 253 flights
  • Afternoons69% on time · p90 80 min · 321 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 86% on time.

  • Saturdays86% on time · p90 20 min · 235 flights
  • Tuesdays84% on time · p90 20 min · 261 flights
  • Wednesdays84% on time · p90 25 min · 268 flights
  • Thursdays82% on time · p90 25 min · 276 flights
  • Mondays81% on time · p90 35 min · 294 flights
  • Fridays79% on time · p90 35 min · 296 flights
  • Sundays77% on time · p90 35 min · 277 flights
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Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.