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Route Reliability

Charlotte → San Juan

CLT–SJU · 1,475 miles · Charlotte Douglas International Airport to Luis Muñoz Marín International Airport

77
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
9 min
Average arrival delay
1.7%
Cancelled
1,075
Flights in the data

Data through May 2026.

Airlines on this route

  • American Airlines79% on time · 992 flights
  • Frontier Airlines47% on time · 83 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

CLT–SJU flights departing between 6–9 AM arrived on time 85% of the time, versus 51% between 6–9 PM.

Sunday scaries are real for this one.

CLT–SJU flights arrived on time 86% of the time on Wednesdays and just 62% on Sundays. That gap is worth planning around.

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
  • Mon78%(152 flights)
  • Tue80%(146 flights)
  • Wed86%(135 flights)
  • Thu76%(158 flights)
  • Fri81%(151 flights)
  • Sat74%(148 flights)
  • Sun62%(166 flights)
On-time by departure window
  • 6–9 AM85%(193 flights)
  • 9 AM–12 PM81%(384 flights)
  • 12–3 PM80%(102 flights)
  • 3–6 PM77%(221 flights)
  • 6–9 PM51%(141 flights)
  • 9 PM–12 AM53%(15 flights)
On-time trend by month
78%
May

Jun 61% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%72
July 202559%75
August 202567%66
September 202590%31
October 202571%56
November 202578%83
December 202584%121
January 202669%110
February 202687%106
March 202685%134
April 202677%108
May 202678%94

Keep nerding

Based on 1,075 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.