Skip to content
WanderNerd
Check a flight

Route Reliability

Washington → San Antonio

DCA–SAT · 1,380 miles · Ronald Reagan Washington National Airport to San Antonio International Airport

42
Bring Snacks
WanderNerd Reliability Score
55%
Arrive within 15 minutes
33 min
Average arrival delay
2.0%
Cancelled
351
Flights in the data

Data through May 2026.

American Airlines is the only airline in this data on this route, arriving on time 55% of the time across 351 flights. No comparison to make.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 58% of the time, against 55% between 3–6 PM.

Sunday scaries are real for this one.

DCA–SAT flights arrived on time 67% of the time on Mondays and just 43% on Sundays. That gap is worth planning around.

Recent months have been rougher.

DCA–SAT flights arrived on time 53% of the time over the last three months in the data, compared with 61% in the three months before that.

The breakdown

On-time by weekday
  • Mon67%(48 flights)
  • Tue56%(48 flights)
  • Wed54%(50 flights)
  • Thu51%(49 flights)
  • Fri49%(49 flights)
  • Sat66%(50 flights)
  • Sun43%(49 flights)
On-time by departure window
  • 12–3 PM58%(12 flights)
  • 3–6 PM55%(123 flights)
  • 6–9 PM55%(208 flights)
On-time trend by month
45%
May

Jun 43% → May 45% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202543%30
July 202539%28
August 202530%30
September 202559%29
October 202577%31
November 202573%30
December 202573%22
January 202661%23
February 202650%28
March 202665%31
April 202650%30
May 202645%31

Same trip, other airports

Keep nerding

Based on 351 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.