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

Los Angeles, CA (LAX) to Washington, DC (IAD) flight delay odds

Historically, 85.7% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,454 flights.

HISTORICAL ROUTE SIGNALLower disruption
85.7%arrived on time
8.1%30+ min late
0.7%cancelled
2,454scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.1%all scheduled flights
120+ minutes late1.5%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival-4.1 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 morning49380.7%11.2%1.4%
Late morning38487.8%6.5%0.3%
Afternoon65987.4%7.3%0.5%
Evening5170.6%25.5%0.0%
Night86787.2%6.7%0.7%

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
Monday36785.8%7.1%0.3%
Tuesday34289.2%5.8%0.3%
Wednesday33583.6%10.4%0.3%
Thursday36688.0%6.3%0.5%
Friday35583.9%9.0%1.4%
Saturday32383.9%10.2%0.3%
Sunday36685.2%8.2%1.6%

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 Airlines2,31986.2%7.8%0.7%
American Airlines8577.6%12.9%0.0%
Alaska Airlines5076.0%14.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202522168.8%20.8%1.4%
August 202519885.9%8.1%0.5%
September 202517490.8%4.0%0.6%
October 202520295.0%2.0%1.0%
November 202519883.8%8.6%0.0%
December 202521585.6%5.6%0.5%
January 202617478.7%12.1%4.0%
February 202615888.0%7.0%0.0%
March 202618475.0%16.8%0.0%
April 202622594.2%3.1%0.0%
May 202625290.5%4.4%0.0%
June 202625389.7%6.3%0.8%

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.

Airline39.4%
Late aircraft40.3%
National airspace20.2%
Weather0.0%
Security0.2%
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.