BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
IAD→CMH

Washington, DC (IAD) to Columbus, OH (CMH) flight delay odds

80.9% of 1,061 official scheduled IAD-to-CMH flights arrived on time; 11.1% arrived at least 30 minutes late and 1.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
80.9%arrived on time
11.1%30+ min late
1.4%cancelled
1,061scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.7%all scheduled flights
120+ minutes late3.5%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+5.3 mincompleted flights

Which departure time was most reliable for IAD to CMH?

Among qualifying IAD-to-CMH departure window results, Early morning had the highest on-time rate: 88.4% of 199 flights. Evening was lowest at 74.7% across 277 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning19988.4%5.5%1.0%
Afternoon23883.6%9.2%0.0%
Evening27774.7%16.6%1.1%
Night34779.5%11.2%2.9%

Which weekday was most reliable for IAD to CMH?

Among qualifying IAD-to-CMH weekday results, Saturday had the highest on-time rate: 85.8% of 106 flights. Sunday was lowest at 75.0% across 152 flights.

DayFlightsOn time30+ minCancelled
Monday16175.8%14.3%3.1%
Tuesday16185.1%8.7%0.6%
Wednesday16081.9%11.9%0.6%
Thursday16183.9%8.7%0.6%
Friday16080.0%14.4%0.6%
Saturday10685.8%6.6%0.9%
Sunday15275.0%11.8%3.3%

Which airline was most reliable for IAD to CMH?

Among qualifying IAD-to-CMH airline results, United Airlines had the highest on-time rate: 84.6% of 389 flights. Republic Airways was lowest at 78.7% across 672 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways67278.7%12.6%2.1%
United Airlines38984.6%8.5%0.3%

Which month was most reliable for IAD to CMH?

Among qualifying IAD-to-CMH month results, April 2026 had the highest on-time rate: 96.5% of 85 flights. July 2025 was lowest at 61.2% across 85 flights.

MonthFlightsOn time30+ minCancelled
July 20258561.2%21.2%7.1%
August 202510986.2%6.4%0.0%
September 202513682.4%8.1%0.0%
October 20259785.6%11.3%0.0%
November 20256090.0%3.3%3.3%
December 20257584.0%13.3%0.0%
January 20268080.0%5.0%6.2%
February 202610476.0%13.5%1.0%
March 202611771.8%17.9%0.9%
April 20268596.5%3.5%0.0%
May 20266882.4%11.8%0.0%
June 20264577.8%20.0%0.0%

What drove IAD to CMH delay minutes?

Late aircraft was the largest recorded IAD-to-CMH delay category, accounting for 49.2% of 14,575 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.8%
Late aircraft49.2%
National airspace14.7%
Weather3.2%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.