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Route Reliability

San Juan → Washington

SJU–DCA · 1,554 miles · Luis Muñoz Marín International Airport to Ronald Reagan Washington National Airport

68
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
18 min
Average arrival delay
1.4%
Cancelled
365
Flights in the data

Data through May 2026.

JetBlue Airways is the only airline in this data on this route, arriving on time 71% 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 75% of the time, against 70% between 6–9 PM.

Sunday scaries are real for this one.

SJU–DCA flights arrived on time 82% of the time on Fridays and just 54% on Sundays. That gap is worth planning around.

Trending in the right direction.

SJU–DCA flights arrived on time 82% of the time over the last three months in the data, compared with 64% in the three months before that.

The breakdown

On-time by weekday
  • Mon65%(51 flights)
  • Tue77%(51 flights)
  • Wed71%(52 flights)
  • Thu71%(52 flights)
  • Fri82%(51 flights)
  • Sat76%(50 flights)
  • Sun54%(52 flights)
On-time by departure window
  • 3–6 PM75%(65 flights)
  • 6–9 PM70%(294 flights)
On-time trend by month
81%
May

Jun 80% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202552%31
August 202568%31
September 202579%29
October 202558%31
November 202570%30
December 202581%31
January 202644%27
February 202668%28
March 202680%30
April 202687%30
May 202681%31

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.