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Route Reliability

Washington → SCE

IAD–SCE · 132 miles · Washington Dulles International Airport to SCE Airport

81
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
11 min
Average arrival delay
2.0%
Cancelled
1,145
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 82% of the time across 1,145 flights. No comparison to make.

What the data says

Morning flights do better here.

IAD–SCE flights departing between 6–9 AM arrived on time 88% of the time, versus 64% between 6–9 PM.

Sunday scaries are real for this one.

IAD–SCE flights arrived on time 87% of the time on Wednesdays. On Sundays: 78%.

Ticking up lately.

IAD–SCE flights arrived on time 88% of the time over the last three months in the data, compared with 82% in the three months before that.

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
  • Mon79%(169 flights)
  • Tue81%(164 flights)
  • Wed87%(156 flights)
  • Thu83%(166 flights)
  • Fri83%(166 flights)
  • Sat87%(136 flights)
  • Sun78%(162 flights)
On-time by departure window
  • 6–9 AM88%(238 flights)
  • 12–3 PM83%(362 flights)
  • 3–6 PM84%(182 flights)
  • 6–9 PM64%(135 flights)
  • 9 PM–12 AM84%(202 flights)
On-time trend by month
89%
May

Jun 66% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%80
July 202562%85
August 202579%90
September 202590%90
October 202589%97
November 202585%105
December 202580%91
January 202676%87
February 202689%78
March 202683%94
April 202693%115
May 202689%107

Keep nerding

Based on 1,145 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.