Historical on-time performance
Washington to Cincinnati
388 miData through Dec 2025Source: US DOT · BTS
Flights on IAD–CVG arrive on time 82% of the time over the last 12 months.
On-time rate82%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 485 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time82%Medianon timep9035 minCancel0.8%Flights485
Why flights run late
Delay causes
- Airline53%
- Weather0%
- Air traffic (NAS)15%
- Late aircraft32%
- 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 IAD → CVG
All airlines · rolling 36 months (2023-01 .. 2025-12).
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 · 634 flights
- Middays78% on time · p90 40 min · 78 flights · limited
- Evenings76% on time · p90 40 min · 161 flights · limited
- Overnights75% on time · p90 70 min · 87 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 77% to 92% on time.
- Wednesdays92% on time · p90 10 min · 128 flights · limited
- Thursdays88% on time · p90 20 min · 136 flights · limited
- Mondays88% on time · p90 15 min · 145 flights · limited
- Saturdays87% on time · p90 20 min · 118 flights · limited
- Tuesdays85% on time · p90 20 min · 137 flights · limited
- Fridays84% on time · p90 50 min · 150 flights · limited
- Sundays77% on time · p90 40 min · 149 flights · limited
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