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Route Reliability

Washington → San Diego

DCA–SAN · 2,276 miles · Ronald Reagan Washington National Airport to San Diego International Airport

66
Usually Fine
WanderNerd Reliability Score
69%
Arrive within 15 minutes
12 min
Average arrival delay
1.6%
Cancelled
364
Flights in the data

Data through May 2026.

Alaska Airlines is the only airline in this data on this route, arriving on time 69% of the time across 364 flights. No comparison to make.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 69% of the time, against 66% between 9 AM–12 PM.

Skip Saturday if you can.

DCA–SAN flights arrived on time 75% of the time on Mondays. On Saturdays: 63%.

Trending in the right direction.

DCA–SAN flights arrived on time 79% of the time over the last three months in the data, compared with 62% in the three months before that.

The breakdown

On-time by weekday
  • Mon75%(51 flights)
  • Tue69%(52 flights)
  • Wed69%(51 flights)
  • Thu69%(51 flights)
  • Fri66%(47 flights)
  • Sat63%(51 flights)
  • Sun69%(52 flights)
On-time by departure window
  • 6–9 AM69%(300 flights)
  • 9 AM–12 PM66%(55 flights)
On-time trend by month
81%
May

Jun 67% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202571%31
August 202567%30
September 202559%29
October 202558%31
November 202577%26
December 202568%31
January 202671%28
February 202646%28
March 202677%31
April 202679%29
May 202681%31

Same trip, other airports

Keep nerding

Based on 364 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.