Are there nonstop flights from Buffalo (BUF) to San Juan (SJU)?

Yes. JetBlue Airways fly this route. Flight time is about 4h.

What is the fastest connection from Buffalo (BUF) to San Juan (SJU)?

via Baltimore ≈ 4h 30m, via Washington ≈ 4h 31m, via Washington ≈ 4h 31m (estimated flying time, excluding layovers).

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

Buffalo Niagara International Airport (BUF) to Luis Munoz Marin International Airport (SJU)・2,976 km

Nonstop flights available (1 airline). Flight time about 4h. Nonstop return flights also operate.

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

21 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.