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

Washington, DC (DCA) to Atlanta, GA (ATL) flight delay odds

Historically, 75.8% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 6,813 flights.

HISTORICAL ROUTE SIGNALVariable
75.8%arrived on time
13.9%30+ min late
3.5%cancelled
6,813scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.1%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+7.2 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 morning2,16185.4%7.7%3.3%
Late morning1,08283.0%7.8%2.5%
Afternoon1,77273.1%15.9%2.3%
Evening1,67863.7%22.3%5.0%
Night12046.7%31.7%15.0%

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
Monday1,03573.2%14.8%5.4%
Tuesday1,04578.7%12.9%2.5%
Wednesday98478.7%13.9%2.2%
Thursday1,01975.6%13.7%1.9%
Friday1,01672.9%15.1%4.2%
Saturday74683.0%10.5%2.5%
Sunday96870.1%15.5%5.8%

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 Lines3,83878.4%12.8%2.8%
Southwest Airlines1,13977.3%12.8%2.1%
PSA Airlines1,05562.9%20.9%8.2%
Republic Airways46178.1%8.9%3.7%
Envoy Air25981.1%12.0%1.5%
American Airlines6165.6%26.2%1.6%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202558260.7%23.4%8.2%
August 202558378.7%13.0%1.9%
September 202559484.8%8.9%0.2%
October 202558283.5%7.4%0.2%
November 202554375.7%16.0%3.3%
December 202554470.2%15.8%3.7%
January 202657273.8%11.7%9.3%
February 202652877.7%10.8%4.0%
March 202658673.2%14.5%4.8%
April 202656382.8%10.8%0.4%
May 202657474.0%17.9%1.9%
June 202656274.0%16.4%4.8%

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.

Airline32.3%
Late aircraft45.8%
National airspace16.3%
Weather5.4%
Security0.2%
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.