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Route Reliability

Washington → Cincinnati

IAD–CVG · 388 miles · Washington Dulles International Airport to Cincinnati/Northern Kentucky International Airport

80
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
11 min
Average arrival delay
1.4%
Cancelled
1,234
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 79% of the time across 1,234 flights. No comparison to make.

What the data says

Morning-you made the right choice.

IAD–CVG flights departing between 6–9 AM arrived on time 88% of the time, versus 74% between 3–6 PM.

Skip Saturday if you can.

IAD–CVG flights arrived on time 83% of the time on Wednesdays. On Saturdays: 76%.

Trending in the right direction.

IAD–CVG flights arrived on time 84% of the time over the last three months in the data, compared with 71% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon79%(182 flights)
  • Tue77%(149 flights)
  • Wed83%(156 flights)
  • Thu82%(179 flights)
  • Fri76%(191 flights)
  • Sat76%(175 flights)
  • Sun77%(183 flights)
On-time by departure window
  • 6–9 AM88%(248 flights)
  • 9 AM–12 PM—(8 flights)
  • 12–3 PM78%(351 flights)
  • 3–6 PM74%(374 flights)
  • 9 PM–12 AM77%(234 flights)
On-time trend by month
86%
May

Jun 73% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%128
July 202568%103
August 202578%101
September 202591%86
October 202585%110
November 202583%104
December 202572%113
January 202667%69
February 202674%65
March 202680%110
April 202685%116
May 202686%110

Same trip, other airports

Keep nerding

Based on 1,234 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.