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

Detroit, MI (DTW) to Washington, DC (DCA) flight delay odds

Historically, 65.7% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,978 flights.

HISTORICAL ROUTE SIGNALVariable
65.7%arrived on time
20.0%30+ min late
3.9%cancelled
2,978scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.0%all scheduled flights
120+ minutes late4.8%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+18.0 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 morning68175.0%13.5%4.4%
Late morning71880.9%10.0%3.8%
Afternoon61351.9%29.7%2.0%
Evening60350.4%30.0%6.0%
Night36366.7%19.0%2.8%

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
Monday44962.4%20.5%5.1%
Tuesday45471.8%15.4%4.0%
Wednesday44464.2%23.4%2.7%
Thursday43862.3%25.1%1.6%
Friday44362.1%22.8%4.3%
Saturday34479.7%12.8%3.2%
Sunday40659.9%18.5%6.2%

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
Delta Air Lines1,74567.0%18.8%2.3%
PSA Airlines95664.7%21.2%6.5%
Republic Airways27160.9%23.2%4.8%
American Airlines425.0%50.0%0.0%
Envoy Air2100.0%0.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202523955.2%27.2%8.8%
August 202523377.3%14.6%1.7%
September 202524782.2%11.7%0.0%
October 202525881.4%12.4%0.0%
November 202525356.5%28.1%2.8%
December 202523859.2%26.5%4.2%
January 202624953.0%21.3%10.0%
February 202623954.8%26.8%4.6%
March 202627158.7%24.0%6.6%
April 202626270.6%15.3%1.1%
May 202625773.5%14.4%1.6%
June 202623265.1%18.5%5.2%

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.

Airline31.6%
Late aircraft27.5%
National airspace35.9%
Weather4.9%
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.