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

Chicago, IL (ORD) to Dayton, OH (DAY) flight delay odds

62.0% of 1,744 official scheduled ORD-to-DAY flights arrived on time; 25.5% arrived at least 30 minutes late and 5.0% 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 SIGNALHigher disruption
62.0%arrived on time
25.5%30+ min late
5.0%cancelled
1,744scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late16.7%all scheduled flights
120+ minutes late9.4%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+35.7 mincompleted flights

Which departure time was most reliable for ORD to DAY?

Among qualifying ORD-to-DAY departure window results, Afternoon had the highest on-time rate: 65.3% of 611 flights. Evening was lowest at 56.9% across 508 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning4360.5%20.9%9.3%
Late morning45363.1%25.2%4.6%
Afternoon61165.3%22.4%3.6%
Evening50856.9%30.7%6.3%
Night12962.8%21.7%7.0%

Which weekday was most reliable for ORD to DAY?

Among qualifying ORD-to-DAY weekday results, Saturday had the highest on-time rate: 67.1% of 228 flights. Sunday was lowest at 57.8% across 258 flights.

DayFlightsOn time30+ minCancelled
Monday26459.5%26.5%7.2%
Tuesday25661.7%25.4%3.9%
Wednesday24063.3%27.9%3.3%
Thursday24462.3%24.6%4.1%
Friday25463.0%23.2%3.9%
Saturday22867.1%19.7%7.9%
Sunday25857.8%30.2%5.0%

Which airline was most reliable for ORD to DAY?

Among qualifying ORD-to-DAY airline results, United Airlines had the highest on-time rate: 79.7% of 69 flights. SkyWest Airlines was lowest at 56.9% across 469 flights.

AirlineFlightsOn time30+ minCancelled
PSA Airlines74657.0%31.1%5.4%
SkyWest Airlines46956.9%26.4%6.2%
Envoy Air35774.5%16.0%3.1%
Republic Airways10366.0%19.4%6.8%
United Airlines6979.7%15.9%1.4%

Which month was most reliable for ORD to DAY?

Among qualifying ORD-to-DAY month results, September 2025 had the highest on-time rate: 73.9% of 119 flights. January 2026 was lowest at 51.0% across 143 flights.

MonthFlightsOn time30+ minCancelled
July 202510651.9%31.1%4.7%
August 202512063.3%25.0%5.8%
September 202511973.9%16.0%0.8%
October 202516571.5%21.2%0.0%
November 202523064.8%21.3%8.3%
December 202517654.0%33.0%6.8%
January 202614351.0%33.6%9.1%
February 202611758.1%33.3%0.0%
March 202613155.0%29.0%9.2%
April 202616463.4%22.6%5.5%
May 202614669.9%19.9%2.7%
June 202612763.8%22.8%4.7%

What drove ORD to DAY delay minutes?

Late aircraft was the largest recorded ORD-to-DAY delay category, accounting for 57.6% of 68,549 BTS-attributed delay minutes during July 2025–June 2026.

Airline18.8%
Late aircraft57.6%
National airspace11.0%
Weather12.5%
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.