Distance From Alton Airport to Luis Munoz Marin International Airport

The distance from Alton Airport () to Luis Munoz Marin International Airport (SJU) is 1991 miles or 3203 kilometers or 1729 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 Alton ( United States ) to San Juan ( Puerto Rico )?

A one-way nonstop (direct) flight between Alton and San Juan takes around 4 hours 34 minutes.

Estimated flight time from Alton Airport, Alton, United States to Luis Munoz Marin International Airport, San Juan, Puerto Rico is 4 hours 34 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		3203 km
Statute Miles		1991 miles
Nautical Miles		1729 nm
Avg. Time of Flight		4 hours 34 minutes

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

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

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

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

Time Difference Between the Airports • - SJU

Time difference between Alton (United States) and San Juan (Puerto Rico) is 0 Hours.

Location	Local Time
Alton (United States)	2026-06-20, 01:03:37 EDT
San Juan (Puerto Rico)	2026-06-20, 01:03:37 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

Alton Airport ( / ) Alton, United States

Destination

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