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

Washington, DC (IAD) to West Palm Beach/Palm Beach, FL (PBI) flight delay odds

Historically, 79.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 334 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
79.9%arrived on time
11.1%30+ min late
1.2%cancelled
334scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.5%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+5.4 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 morning5683.9%8.9%3.6%
Late morning9374.2%10.8%1.1%
Evening15481.8%12.3%0.6%

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
Monday4870.8%8.3%4.2%
Tuesday4785.1%8.5%2.1%
Wednesday4787.2%10.6%0.0%
Thursday4877.1%14.6%0.0%
Friday4877.1%16.7%0.0%
Saturday4883.3%6.2%0.0%
Sunday4879.2%12.5%2.1%

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
United Airlines30379.9%11.2%1.3%
Republic Airways3180.6%9.7%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
September 20256100.0%0.0%0.0%
October 20253177.4%12.9%0.0%
November 20253076.7%6.7%3.3%
December 20254571.1%15.6%0.0%
January 20263686.1%11.1%2.8%
February 20264573.3%11.1%0.0%
March 20266280.6%14.5%3.2%
April 20265984.7%10.2%0.0%
May 20262090.0%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.

Airline23.2%
Late aircraft40.2%
National airspace32.1%
Weather4.5%
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.