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

Washington, DC (DCA) to Boston, MA (BOS) flight delay odds

68.6% of 9,081 official scheduled DCA-to-BOS flights arrived on time; 20.9% arrived at least 30 minutes late and 3.9% 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
68.6%arrived on time
20.9%30+ min late
3.9%cancelled
9,081scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late12.6%all scheduled flights
120+ minutes late4.9%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+14.8 mincompleted flights

Which departure time was most reliable for DCA to BOS?

Among qualifying DCA-to-BOS departure window results, Early morning had the highest on-time rate: 85.8% of 1,988 flights. Evening was lowest at 54.4% across 2,087 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,98885.8%6.9%3.0%
Late morning1,48380.2%11.9%2.2%
Afternoon2,78362.9%26.3%3.6%
Evening2,08754.4%32.6%5.2%
Night74061.2%23.4%7.2%

Which weekday was most reliable for DCA to BOS?

Among qualifying DCA-to-BOS weekday results, Saturday had the highest on-time rate: 82.3% of 745 flights. Sunday was lowest at 62.8% across 1,305 flights.

DayFlightsOn time30+ minCancelled
Monday1,41866.6%20.5%7.1%
Tuesday1,43672.7%16.8%3.6%
Wednesday1,39871.5%19.2%3.1%
Thursday1,38865.0%24.7%3.6%
Friday1,39165.6%24.9%2.0%
Saturday74582.3%11.1%2.1%
Sunday1,30562.8%25.1%4.8%

Which airline was most reliable for DCA to BOS?

Among qualifying DCA-to-BOS airline results, Republic Airways had the highest on-time rate: 74.6% of 3,983 flights. JetBlue Airways was lowest at 63.2% across 2,633 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways3,98374.6%15.7%4.2%
JetBlue Airways2,63363.2%25.8%3.9%
American Airlines2,26464.1%24.8%3.0%
Envoy Air19872.2%16.7%6.1%
Delta Air Lines366.7%33.3%0.0%

Which month was most reliable for DCA to BOS?

Among qualifying DCA-to-BOS month results, August 2025 had the highest on-time rate: 80.9% of 740 flights. September 2025 was lowest at 59.5% across 761 flights.

MonthFlightsOn time30+ minCancelled
July 202575062.1%22.5%9.9%
August 202574080.9%12.7%2.2%
September 202576159.5%30.6%2.0%
October 202577463.4%27.3%2.2%
November 202573569.8%21.5%3.3%
December 202569168.9%21.6%1.3%
January 202675468.7%16.6%9.2%
February 202673065.2%19.9%8.5%
March 202680965.4%23.4%2.8%
April 202678372.7%19.7%0.4%
May 202679773.7%17.6%1.3%
June 202675773.6%17.7%4.0%

What drove DCA to BOS delay minutes?

Late aircraft was the largest recorded DCA-to-BOS delay category, accounting for 47.0% of 199,738 BTS-attributed delay minutes during July 2025–June 2026.

Airline18.9%
Late aircraft47.0%
National airspace31.3%
Weather2.8%
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.