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

Dallas, TX (DAL) to Washington, DC (DCA) flight delay odds

66.5% of 1,735 official scheduled DAL-to-DCA flights arrived on time; 20.7% arrived at least 30 minutes late and 1.7% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
66.5%arrived on time
20.7%30+ min late
1.7%cancelled
1,735scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.1%all scheduled flights
120+ minutes late4.5%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+15.3 mincompleted flights

Which departure time was most reliable for DAL to DCA?

Among qualifying DAL-to-DCA departure window results, Early morning had the highest on-time rate: 89.7% of 369 flights. Evening was lowest at 44.7% across 445 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36989.7%4.9%1.6%
Late morning36079.7%10.0%1.1%
Afternoon56159.9%24.4%2.5%
Evening44544.7%38.0%1.3%

Which weekday was most reliable for DAL to DCA?

Among qualifying DAL-to-DCA weekday results, Saturday had the highest on-time rate: 78.9% of 175 flights. Friday was lowest at 58.5% across 258 flights.

DayFlightsOn time30+ minCancelled
Monday26070.4%19.2%0.8%
Tuesday26574.7%15.1%1.1%
Wednesday26065.8%19.2%1.2%
Thursday25761.5%25.7%1.6%
Friday25858.5%25.2%2.7%
Saturday17578.9%16.0%0.6%
Sunday26059.2%23.5%3.8%

Which airline was most reliable for DAL to DCA?

Only Southwest Airlines met the DAL-to-DCA airline threshold: 66.5% of 1,735 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,73566.5%20.7%1.7%

Which month was most reliable for DAL to DCA?

Among qualifying DAL-to-DCA month results, December 2025 had the highest on-time rate: 78.5% of 149 flights. March 2026 was lowest at 52.3% across 151 flights.

MonthFlightsOn time30+ minCancelled
July 202515060.7%22.0%2.0%
August 202514675.3%10.3%1.4%
September 202514277.5%15.5%0.0%
October 202514664.4%18.5%0.0%
November 202513971.9%22.3%2.9%
December 202514978.5%10.7%0.0%
January 202614671.2%16.4%6.8%
February 202613262.9%17.4%2.3%
March 202615152.3%31.8%2.0%
April 202614364.3%25.2%0.0%
May 202614562.1%29.0%1.4%
June 202614656.8%29.5%2.1%

What drove DAL to DCA delay minutes?

Late aircraft was the largest recorded DAL-to-DCA delay category, accounting for 39.0% of 33,192 BTS-attributed delay minutes during July 2025–June 2026.

Airline28.3%
Late aircraft39.0%
National airspace27.4%
Weather4.4%
Security0.8%
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.