Washington, DC → Los Angeles, CA flight delays
IAD → LAX · all airlines · 252 flights · May 2026 · source: US BTS
This route is delayed
12%of the time, by +45 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
88%
Delayed 3h+
0%
Cancelled
0.4%
Avg when late
+45m
Best & worst day to fly
Most on-time
Monday
delayed 3%
Worst
Wednesday
delayed 25%
Which airline is most punctual on IAD → LAX?
Uniteddelayed 10%
Americandelayed 26%
Frequently asked
How often is the Washington, DC to Los Angeles, CA flight delayed?
About 12% of IAD → LAX flights arrive late (15+ minutes), by an average of 45 minutes when they do, based on 252 flights in May 2026.
Which airline is most punctual on IAD → LAX?
United, delayed 10% of the time — the best of the 2 airlines flying this route.
What is the best day to fly IAD → LAX?
Monday is the most on-time (delayed 3%), while Wednesday is the worst (delayed 25%).
Airport overviews