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Route Reliability

San Juan → New York

SJU–JFK · 1,598 miles · Luis Muñoz Marín International Airport to John F. Kennedy International Airport

77
Usually Fine
WanderNerd Reliability Score
80%
Arrive within 15 minutes
6 min
Average arrival delay
2.6%
Cancelled
3,718
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines89%1,104 flights
  2. 2.Frontier Airlines77%376 flights
  3. 3.JetBlue Airways76%2,238 flights

What the data says

Morning flights do better here.

SJU–JFK flights departing between 6–9 AM arrived on time 87% of the time, versus 65% between 9 PM–12 AM.

Friday comes out ahead.

A small edge: 83% on time on Fridays against 76% on Sundays.

Delta Air Lines runs this route best.

Delta Air Lines arrived on time 89% of the time on this route; JetBlue Airways managed 76%.

Trending in the right direction.

SJU–JFK flights arrived on time 85% of the time over the last three months in the data, compared with 75% in the three months before that.

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%(517 flights)
  • Tue80%(510 flights)
  • Wed83%(509 flights)
  • Thu80%(527 flights)
  • Fri83%(523 flights)
  • Sat79%(500 flights)
  • Sun76%(526 flights)
On-time by departure window
  • 12–3 AM67%(27 flights)
  • 3–6 AM84%(249 flights)
  • 6–9 AM87%(965 flights)
  • 9 AM–12 PM77%(341 flights)
  • 12–3 PM81%(835 flights)
  • 3–6 PM74%(265 flights)
  • 6–9 PM77%(684 flights)
  • 9 PM–12 AM65%(246 flights)
On-time trend by month
89%
May

Jun 84% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%346
July 202573%356
August 202573%357
September 202585%248
October 202584%265
November 202581%294
December 202579%334
January 202675%281
February 202672%268
March 202683%302
April 202684%309
May 202689%252

Same trip, other airports

Keep nerding

Based on 3,718 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.