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

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

Historically, 62.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,744 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 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%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.