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Route Reliability

Washington → Sacramento

IAD–SMF · 2,357 miles · Washington Dulles International Airport to Sacramento International Airport

82
Pretty Reliable
WanderNerd Reliability Score
76%
Arrive within 15 minutes
8 min
Average arrival delay
0.5%
Cancelled
365
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 76% of the time across 365 flights. No comparison to make.

What the data says

3–6 PM has a slight edge.

Departures between 3–6 PM arrived on time 78% of the time, against 75% between 6–9 PM.

Friday is doing you no favors.

IAD–SMF flights arrived on time 90% of the time on Tuesdays and just 69% on Fridays. That gap is worth planning around.

Trending in the right direction.

IAD–SMF flights arrived on time 85% of the time over the last three months in the data, compared with 77% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon71%(52 flights)
  • Tue90%(52 flights)
  • Wed78%(51 flights)
  • Thu77%(52 flights)
  • Fri69%(52 flights)
  • Sat77%(52 flights)
  • Sun71%(52 flights)
On-time by departure window
  • 3–6 PM78%(168 flights)
  • 6–9 PM75%(195 flights)
On-time trend by month
83%
May

Jun 47% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202547%30
July 202536%31
August 202587%31
September 202587%30
October 202584%31
November 202593%30
December 202565%31
January 202680%30
February 202686%28
March 202684%31
April 202687%30
May 202683%30

Same trip, other airports

Keep nerding

Based on 365 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.