Historical on-time performance
Columbus to Washington
299 miData through Dec 2025Source: US DOT · BTS
Flights on CMH–IAD arrive on time 82% of the time over the last 12 months.
On-time rate82%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 1,011 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time81%Medianon timep9025 minCancel1.5%Flights880
- United AirlinesOn-time85%Medianon timep9020 minCancel0.0%Flights131
Why flights run late
Delay causes
- Airline32%
- Weather7%
- Air traffic (NAS)21%
- Late aircraft40%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly CMH → IAD
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 75% to 93% on time.
- Middays93% on time · p90 5 min · 528 flights
- Mornings92% on time · p90 10 min · 960 flights
- Evenings83% on time · p90 30 min · 509 flights
- Afternoons75% on time · p90 30 min · 500 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 89% on time.
- Saturdays89% on time · p90 15 min · 296 flights
- Tuesdays87% on time · p90 15 min · 358 flights
- Wednesdays87% on time · p90 25 min · 374 flights
- Sundays87% on time · p90 15 min · 357 flights
- Thursdays87% on time · p90 15 min · 378 flights
- Mondays86% on time · p90 20 min · 382 flights
- Fridays85% on time · p90 20 min · 368 flights
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