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

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

66.9% of 2,055 official scheduled CMH-to-DCA flights arrived on time; 19.6% arrived at least 30 minutes late and 3.3% 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 SIGNALVariable
66.9%arrived on time
19.6%30+ min late
3.3%cancelled
2,055scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.0%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+15.3 mincompleted flights

Which departure time was most reliable for CMH to DCA?

Among qualifying CMH-to-DCA departure window results, Early morning had the highest on-time rate: 87.2% of 359 flights. Evening was lowest at 55.7% across 470 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning35987.2%5.0%1.1%
Late morning35381.0%9.6%2.0%
Afternoon87358.8%26.6%3.2%
Evening47055.7%25.3%6.2%

Which weekday was most reliable for CMH to DCA?

Among qualifying CMH-to-DCA weekday results, Saturday had the highest on-time rate: 75.6% of 225 flights. Friday was lowest at 61.9% across 302 flights.

DayFlightsOn time30+ minCancelled
Monday30564.6%17.0%5.2%
Tuesday31472.3%15.6%3.2%
Wednesday30363.4%21.5%2.3%
Thursday30065.0%23.7%2.7%
Friday30261.9%22.5%3.3%
Saturday22575.6%17.3%1.3%
Sunday30667.3%19.3%4.6%

Which airline was most reliable for CMH to DCA?

Among qualifying CMH-to-DCA airline results, Envoy Air had the highest on-time rate: 88.6% of 315 flights. Southwest Airlines was lowest at 59.0% across 351 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways97165.3%20.6%3.6%
PSA Airlines41860.8%22.2%6.5%
Southwest Airlines35159.0%27.1%1.1%
Envoy Air31588.6%4.8%0.6%

Which month was most reliable for CMH to DCA?

Among qualifying CMH-to-DCA month results, October 2025 had the highest on-time rate: 83.2% of 173 flights. December 2025 was lowest at 51.7% across 149 flights.

MonthFlightsOn time30+ minCancelled
July 202518054.4%23.3%10.6%
August 202518077.8%12.2%1.1%
September 202517181.9%12.9%0.0%
October 202517383.2%9.2%0.0%
November 202516655.4%25.9%3.6%
December 202514951.7%24.8%3.4%
January 202616856.5%23.8%8.9%
February 202616355.2%28.8%4.3%
March 202618263.2%24.7%3.3%
April 202616974.6%17.8%0.0%
May 202617871.9%16.9%1.1%
June 202617673.3%16.5%3.4%

What drove CMH to DCA delay minutes?

National airspace was the largest recorded CMH-to-DCA delay category, accounting for 44.1% of 42,080 BTS-attributed delay minutes during July 2025–June 2026.

Airline13.8%
Late aircraft35.9%
National airspace44.1%
Weather6.3%
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.