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

Raleigh/Durham, NC (RDU) to Washington, DC (DCA) flight delay odds

Historically, 60.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,989 flights.

HISTORICAL ROUTE SIGNALHigher disruption
60.0%arrived on time
23.8%30+ min late
5.1%cancelled
1,989scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late13.2%all scheduled flights
120+ minutes late5.4%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+22.4 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 morning34579.7%10.1%4.1%
Late morning55276.6%11.8%4.2%
Afternoon48552.4%30.5%3.1%
Evening56140.5%36.0%7.7%
Night4630.4%52.2%13.0%

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
Monday30460.9%22.7%6.6%
Tuesday31061.6%21.9%3.9%
Wednesday30358.7%22.8%4.0%
Thursday29654.1%31.8%1.7%
Friday30254.3%28.5%5.3%
Saturday19275.5%13.0%6.2%
Sunday28260.3%22.3%8.5%

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 Airlines83857.0%26.1%5.6%
Republic Airways49755.9%24.1%5.4%
Envoy Air44864.1%21.2%4.7%
American Airlines20573.2%19.0%2.9%
Frontier Airlines10.0%100.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202514555.2%26.9%11.7%
August 202516361.3%23.3%3.1%
September 202517266.3%23.8%1.2%
October 202517848.3%38.2%0.6%
November 202516360.1%19.0%3.7%
December 202515862.0%25.9%2.5%
January 202617660.2%19.9%11.9%
February 202616154.7%23.0%7.5%
March 202617761.6%23.2%6.2%
April 202616666.9%20.5%1.2%
May 202616663.3%18.7%3.6%
June 202616459.8%23.2%8.5%

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.

Airline18.7%
Late aircraft46.0%
National airspace31.4%
Weather3.9%
Security0.0%
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.