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

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

70.9% of 9,082 official scheduled BOS-to-DCA flights arrived on time; 17.2% 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
70.9%arrived on time
17.2%30+ min late
3.9%cancelled
9,082scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.0%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+10.7 mincompleted flights

Which departure time was most reliable for BOS to DCA?

Among qualifying BOS-to-DCA departure window results, Early morning had the highest on-time rate: 86.3% of 2,244 flights. Evening was lowest at 52.4% across 1,949 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning2,24486.3%6.4%3.1%
Late morning2,13080.7%10.7%2.5%
Afternoon2,40563.6%21.4%3.7%
Evening1,94952.4%31.2%5.8%
Night35466.4%20.1%7.9%

Which weekday was most reliable for BOS to DCA?

Among qualifying BOS-to-DCA weekday results, Saturday had the highest on-time rate: 81.2% of 752 flights. Sunday was lowest at 63.6% across 1,298 flights.

DayFlightsOn time30+ minCancelled
Monday1,41770.9%15.0%6.8%
Tuesday1,43576.1%13.4%3.4%
Wednesday1,40073.6%15.1%3.5%
Thursday1,38967.7%20.9%3.3%
Friday1,39167.5%21.0%2.2%
Saturday75281.2%11.6%2.1%
Sunday1,29863.6%21.6%5.0%

Which airline was most reliable for BOS to DCA?

Among qualifying BOS-to-DCA airline results, Envoy Air had the highest on-time rate: 77.3% of 198 flights. JetBlue Airways was lowest at 65.9% across 2,634 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways3,98572.3%15.5%4.2%
JetBlue Airways2,63465.9%21.1%3.8%
American Airlines2,26273.9%16.2%3.2%
Envoy Air19877.3%12.1%5.6%
Delta Air Lines333.3%33.3%0.0%

Which month was most reliable for BOS to DCA?

Among qualifying BOS-to-DCA month results, August 2025 had the highest on-time rate: 80.8% of 741 flights. February 2026 was lowest at 62.4% across 731 flights.

MonthFlightsOn time30+ minCancelled
July 202575064.9%17.9%10.7%
August 202574180.8%11.6%1.6%
September 202576267.6%20.1%1.8%
October 202577370.2%18.1%2.3%
November 202573670.8%17.9%3.0%
December 202568969.1%21.2%1.2%
January 202675468.0%16.8%9.5%
February 202673162.4%19.6%9.0%
March 202680969.1%18.8%2.7%
April 202678377.9%14.3%0.3%
May 202679778.0%13.0%1.3%
June 202675771.6%18.1%3.4%

What drove BOS to DCA delay minutes?

Late aircraft was the largest recorded BOS-to-DCA delay category, accounting for 41.2% of 163,250 BTS-attributed delay minutes during July 2025–June 2026.

Airline22.5%
Late aircraft41.2%
National airspace33.2%
Weather3.0%
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.