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

Columbus, OH (CMH) to Baltimore, MD (BWI) flight delay odds

85.5% of 1,051 official scheduled CMH-to-BWI flights arrived on time; 7.7% arrived at least 30 minutes late and 1.9% 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 SIGNALGenerally reliable
85.5%arrived on time
7.7%30+ min late
1.9%cancelled
1,051scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.8%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival-1.3 mincompleted flights

Which departure time was most reliable for CMH to BWI?

Among qualifying CMH-to-BWI departure window results, Early morning had the highest on-time rate: 95.4% of 389 flights. Evening was lowest at 65.0% across 177 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning38995.4%2.1%1.5%
Late morning18893.1%4.8%1.1%
Afternoon29780.1%9.8%2.4%
Evening17765.0%19.8%2.8%

Which weekday was most reliable for CMH to BWI?

Among qualifying CMH-to-BWI weekday results, Tuesday had the highest on-time rate: 91.4% of 151 flights. Sunday was lowest at 76.6% across 158 flights.

DayFlightsOn time30+ minCancelled
Monday15486.4%6.5%1.9%
Tuesday15191.4%4.0%0.7%
Wednesday14887.8%6.8%1.4%
Thursday15385.6%6.5%1.3%
Friday15285.5%7.2%1.3%
Saturday13585.9%10.4%0.7%
Sunday15876.6%12.7%5.7%

Which airline was most reliable for CMH to BWI?

Only Southwest Airlines met the CMH-to-BWI airline threshold: 85.5% of 1,051 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,05185.5%7.7%1.9%

Which month was most reliable for CMH to BWI?

Among qualifying CMH-to-BWI month results, October 2025 had the highest on-time rate: 94.9% of 98 flights. July 2025 was lowest at 77.2% across 92 flights.

MonthFlightsOn time30+ minCancelled
July 20259277.2%12.0%7.6%
August 20259288.0%6.5%2.2%
September 20259088.9%6.7%0.0%
October 20259894.9%2.0%0.0%
November 20259086.7%7.8%0.0%
December 20259479.8%10.6%1.1%
January 20267184.5%7.0%7.0%
February 20267181.7%7.0%5.6%
March 20269184.6%8.8%0.0%
April 20268790.8%4.6%0.0%
May 20268985.4%9.0%1.1%
June 20268682.6%10.5%0.0%

What drove CMH to BWI delay minutes?

Late aircraft was the largest recorded CMH-to-BWI delay category, accounting for 51.0% of 8,736 BTS-attributed delay minutes during July 2025–June 2026.

Airline28.5%
Late aircraft51.0%
National airspace18.3%
Weather2.1%
Security0.1%
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.