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

Miami, FL (MIA) to Washington, DC (DCA) flight delay odds

Historically, 72.8% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 3,962 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
72.8%arrived on time
16.9%30+ min late
2.1%cancelled
3,962scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.1%all scheduled flights
120+ minutes late3.7%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+10.2 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 morning70888.8%6.4%0.8%
Late morning95278.0%14.2%0.9%
Afternoon86766.6%22.6%1.8%
Evening1,05762.8%22.0%3.6%
Night37871.7%15.6%4.2%

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
Monday57671.0%16.5%4.0%
Tuesday58777.7%11.9%2.2%
Wednesday57174.6%15.8%1.4%
Thursday56374.2%16.9%0.5%
Friday57270.5%19.9%0.5%
Saturday51574.0%17.3%1.7%
Sunday57867.6%19.9%4.5%

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
American Airlines3,54972.7%16.6%2.3%
Delta Air Lines36474.2%18.1%1.1%
Republic Airways4866.7%29.2%0.0%
Envoy Air1100.0%0.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202533453.0%27.8%7.8%
August 202533672.9%19.6%0.6%
September 202532679.1%14.7%0.6%
October 202533778.6%12.8%0.3%
November 202531073.2%14.2%1.6%
December 202534476.2%15.1%0.3%
January 202634167.4%16.4%8.5%
February 202630374.3%15.8%2.0%
March 202633766.8%20.8%1.8%
April 202632980.5%14.0%0.0%
May 202633979.6%13.0%0.6%
June 202632672.1%17.8%1.5%

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.

Airline32.5%
Late aircraft42.9%
National airspace19.1%
Weather5.0%
Security0.5%
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.