Historical on-time performance
Washington to Cincinnati
388 miData through May 2026Source: US DOT · BTS
Flights on IAD–CVG arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 468 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time81%Medianon timep9040 minCancel1.1%Flights468
Why flights run late
Delay causes
- Airline53%
- Weather0%
- Air traffic (NAS)16%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather20%
- Air traffic (NAS)80%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 5 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAD → CVG
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 91% on time.
- Mornings91% on time · p90 10 min · 649 flights
- Evenings78% on time · p90 40 min · 203 flights
- Overnights78% on time · p90 50 min · 170 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 90% on time.
- Wednesdays90% on time · p90 10 min · 150 flights · limited
- Thursdays88% on time · p90 25 min · 159 flights · limited
- Saturdays87% on time · p90 20 min · 141 flights · limited
- Mondays86% on time · p90 20 min · 165 flights · limited
- Tuesdays86% on time · p90 20 min · 149 flights · limited
- Fridays83% on time · p90 40 min · 172 flights · limited
- Sundays79% on time · p90 40 min · 169 flights · limited
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