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

Washington, DC (DCA) to Chicago, IL (ORD) flight delay odds

Historically, 71.5% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 6,992 flights.

HISTORICAL ROUTE SIGNALVariable
71.5%arrived on time
17.0%30+ min late
3.4%cancelled
6,992scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.3%all scheduled flights
120+ minutes late5.3%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+14.5 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 morning1,61783.9%7.1%3.3%
Late morning1,18180.9%11.4%2.5%
Afternoon2,08273.1%16.5%2.7%
Evening1,91554.2%28.9%4.3%
Night19766.0%19.8%9.1%

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
Monday1,04772.3%16.2%4.7%
Tuesday1,06575.5%14.5%3.1%
Wednesday1,03268.0%20.0%2.4%
Thursday1,03172.4%16.6%3.0%
Friday1,03669.0%18.2%3.1%
Saturday73277.7%12.2%2.7%
Sunday1,04967.4%19.8%4.6%

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
United Airlines3,39271.7%17.5%2.2%
American Airlines2,30171.4%17.0%4.0%
Republic Airways1,05970.8%15.6%5.6%
Envoy Air17176.6%11.7%4.7%
SkyWest Airlines6962.3%24.6%5.8%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202559060.8%24.9%6.3%
August 202558474.3%16.1%2.9%
September 202557776.1%14.9%0.3%
October 202559775.2%13.2%0.7%
November 202556369.1%18.3%5.2%
December 202555573.0%17.5%1.4%
January 202658869.6%13.6%7.7%
February 202653076.2%13.2%1.3%
March 202659367.1%18.9%5.9%
April 202656773.2%15.5%3.9%
May 202661074.3%17.0%1.6%
June 202663869.9%19.9%3.4%

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.

Airline15.6%
Late aircraft40.8%
National airspace35.1%
Weather8.5%
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.