Distance From Casper-Natrona County International Airport to Luis Munoz Marin International Airport, CPR - SJU Distance

The distance from Casper-Natrona County International Airport (CPR) to Luis Munoz Marin International Airport (SJU) is 2897 miles or 4662 kilometers or 2516 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 Casper ( United States ) to San Juan ( Puerto Rico )?

A one-way nonstop (direct) flight between Casper and San Juan takes around 6 hours 39 minutes.

Estimated flight time from Casper-Natrona County International Airport, Casper, United States to Luis Munoz Marin International Airport, San Juan, Puerto Rico is 6 hours 39 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 • CPR - SJU

Kilometers		4662 km
Statute Miles		2897 miles
Nautical Miles		2516 nm
Avg. Time of Flight		6 hours 39 minutes

Casper-Natrona County International Airport to Luis Munoz Marin International Airport Flight Route Map - CPR to SJU Flight Path

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

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

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

Time Difference Between the Airports • CPR - SJU

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

Location	Local Time
Casper (United States)	2026-03-21, 13:26:16 MDT
San Juan (Puerto Rico)	2026-03-21, 15:26:16 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

Casper-Natrona County International Airport (CPR / KCPR) Casper, United States

Destination

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