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Route Reliability

San Juan → Christiansted

SJU–STX · 94 miles · Luis Muñoz Marín International Airport to Henry E. Rohlsen Airport

79
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
9 min
Average arrival delay
0.9%
Cancelled
326
Flights in the data

Data through May 2026.

Airlines on this route

  • JetBlue Airways77% on time · 312 flights
  • Frontier Airlines29% on time · 14 flights

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

What the data says

The 12–3 PM departure wins.

SJU–STX flights departing between 12–3 PM arrived on time 77% of the time, versus 57% between 3–6 PM.

Sunday scaries are real for this one.

SJU–STX flights arrived on time 82% of the time on Tuesdays and just 62% on Sundays. That gap is worth planning around.

Trending in the right direction.

SJU–STX flights arrived on time 82% of the time over the last three months in the data, compared with 70% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon76%(45 flights)
  • Tue82%(44 flights)
  • Wed82%(44 flights)
  • Thu71%(51 flights)
  • Fri77%(44 flights)
  • Sat76%(42 flights)
  • Sun62%(53 flights)
On-time by departure window
  • 12–3 PM77%(281 flights)
  • 3–6 PM57%(42 flights)
On-time trend by month
87%
May

Jun 87% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202568%40
August 202569%35
November 202577%30
December 202568%31
January 202667%30
February 202674%27
March 202677%31
April 202680%30
May 202687%31

Keep nerding

Based on 326 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.