Are there nonstop flights from New York (JFK) to San Juan (SJU)?

Yes. Delta Air Lines, JetBlue Airways fly this route. Flight time is about 3h 32m.

What is the fastest connection from New York (JFK) to San Juan (SJU)?

via White Plains ≈ 4h 8m, via Charlotte Amalie ≈ 4h 13m, via Norfolk ≈ 4h 14m (estimated flying time, excluding layovers).

from 23,000 JAL miles, from 30,000 ANA miles (economy, one way, based on the published award charts).

John F. Kennedy International Airport (JFK) to Luis Munoz Marin International Airport (SJU)・2,578 km

Nonstop flights available (2 airlines). Flight time about 3h 32m. Nonstop return flights also operate.

With milesJAL 23,000 miles+ (via CLT)ANA 30,000 miles+ (via PTY)Economy, one way, estimate. Tap a connection for miles by cabin.

32 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.