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

Burlington, VT (BTV) to Washington, DC (IAD) flight delay odds

Historically, 82.7% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 364 flights.

HISTORICAL ROUTE SIGNALVariable
82.7%arrived on time
10.4%30+ min late
3.6%cancelled
364scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.3%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+5.5 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 morning13283.3%11.4%3.8%
Late morning14493.1%2.8%0.7%
Evening5964.4%20.3%8.5%

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
Monday6086.7%6.7%3.3%
Tuesday5576.4%10.9%10.9%
Wednesday4383.7%14.0%2.3%
Thursday6081.7%13.3%3.3%
Friday6280.6%12.9%0.0%
Saturday4185.4%9.8%2.4%
Sunday4386.0%4.7%2.3%

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
Republic Airways29382.3%10.2%4.1%
United Airlines7184.5%11.3%1.4%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 20259669.8%17.7%11.5%
August 20257187.3%9.9%0.0%
September 20253393.9%3.0%0.0%
October 20254080.0%7.5%0.0%
November 202510.0%100.0%0.0%
February 20263281.2%12.5%3.1%
March 20263381.8%12.1%3.0%
April 2026366.7%0.0%0.0%
May 20262996.6%3.4%0.0%
June 202626100.0%0.0%0.0%

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.

Airline34.4%
Late aircraft46.2%
National airspace16.2%
Weather3.2%
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.