Distance From Grieve Airport to Luis Munoz Marin International Airport

The distance from Grieve Airport () to Luis Munoz Marin International Airport (SJU) is 2659 miles or 4278 kilometers or 2309 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Buffalo ( United States ) to San Juan ( Puerto Rico )?

A one-way nonstop (direct) flight between Buffalo and San Juan takes around 6 hours 6 minutes.

Estimated flight time from Grieve Airport, Buffalo, United States to Luis Munoz Marin International Airport, San Juan, Puerto Rico is 6 hours 6 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - SJU

Kilometers		4278 km
Statute Miles		2659 miles
Nautical Miles		2309 nm
Avg. Time of Flight		6 hours 6 minutes

Grieve Airport to Luis Munoz Marin International Airport Flight Route Map - to SJU Flight Path

Location of Grieve Airport & Luis Munoz Marin International Airport is given below.
Click the map to view Buffalo to San Juan nonstop flight path and travel direction.

Click to see flight route on Google Map between Buffalo, United States and San Juan, Puerto Rico. .

Nonstop flight route between Buffalo, United States and San Juan, Puerto Rico.

Time Difference Between the Airports • - SJU

Time difference between Buffalo (United States) and San Juan (Puerto Rico) is 2 Hours.
San Juan time is 2 Hours ahead of Buffalo.

Location	Local Time
Buffalo (United States)	2025-12-14, 18:05:48 CST
San Juan (Puerto Rico)	2025-12-14, 20:05:48 AST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Grieve Airport ( / ND59) Buffalo, United States

Destination

Luis Munoz Marin International Airport (SJU / TJSJ) San Juan, Puerto Rico