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Route Reliability

Los Angeles → Washington

LAX–IAD · 2,288 miles · Los Angeles International Airport to Washington Dulles International Airport

89
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
3 min early
Average arrival delay
0.6%
Cancelled
2,429
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines87% on time · 2,294 flights
  • Alaska Airlines86% on time · 80 flights
  • American Airlines73% on time · 55 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

3–6 PM has a slight edge.

Departures between 3–6 PM arrived on time 88% of the time, against 84% between 6–9 AM.

Tuesday comes out ahead.

A small edge: 89% on time on Tuesdays against 84% on Saturdays.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon86%(359 flights)
  • Tue89%(331 flights)
  • Wed84%(331 flights)
  • Thu89%(358 flights)
  • Fri86%(345 flights)
  • Sat84%(313 flights)
  • Sun86%(363 flights)
On-time by departure window
  • 6–9 AM84%(521 flights)
  • 9 AM–12 PM87%(379 flights)
  • 12–3 PM87%(430 flights)
  • 3–6 PM88%(257 flights)
  • 6–9 PM—(9 flights)
  • 9 PM–12 AM87%(804 flights)
On-time trend by month
91%
May

Jun 83% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%224
July 202572%214
August 202587%196
September 202592%172
October 202596%200
November 202585%198
December 202587%213
January 202682%167
February 202688%158
March 202676%182
April 202695%225
May 202691%251

Same trip, other airports

Keep nerding

Based on 2,429 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.