Distance From Knox County Regional Airport to Francisco de Sá Carneiro Airport, RKD - OPO Distance

The distance from Knox County Regional Airport (RKD) to Francisco de Sá Carneiro Airport (OPO) is 3007 miles or 4839 kilometers or 2611 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 Rockland ( United States ) to Porto ( Portugal )?

A one-way nonstop (direct) flight between Rockland and Porto takes around 6 hours 54 minutes.

Estimated flight time from Knox County Regional Airport, Rockland, United States to Francisco de Sá Carneiro Airport, Porto, Portugal is 6 hours 54 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 • RKD - OPO

Kilometers		4839 km
Statute Miles		3007 miles
Nautical Miles		2611 nm
Avg. Time of Flight		6 hours 54 minutes

Knox County Regional Airport to Francisco de Sá Carneiro Airport Flight Route Map - RKD to OPO Flight Path

Location of Knox County Regional Airport & Francisco de Sá Carneiro Airport is given below.
Click the map to view Rockland to Porto nonstop flight path and travel direction.

Click to see flight route on Google Map between Rockland, United States and Porto, Portugal. .

Nonstop flight route between Rockland, United States and Porto, Portugal.

Time Difference Between the Airports • RKD - OPO

Time difference between Rockland (United States) and Porto (Portugal) is 5 Hours.
Porto time is 5 Hours ahead of Rockland.

Location	Local Time
Rockland (United States)	2025-12-16, 10:41:47 EST
Porto (Portugal)	2025-12-16, 15:41:47 WET

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

Knox County Regional Airport (RKD / KRKD) Rockland, United States

Destination

Francisco de Sá Carneiro Airport (OPO / LPPR) Porto, Portugal