Distance From Rushmore Heliport to Francisco de Sá Carneiro Airport

The distance from Rushmore Heliport () to Francisco de Sá Carneiro Airport (OPO) is 4537 miles or 7301 kilometers or 3940 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 Keystone ( United States ) to Porto ( Portugal )?

A one-way nonstop (direct) flight between Keystone and Porto takes around 10 hours 25 minutes.

Estimated flight time from Rushmore Heliport, Keystone, United States to Francisco de Sá Carneiro Airport, Porto, Portugal is 10 hours 25 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 • - OPO

Kilometers		7301 km
Statute Miles		4537 miles
Nautical Miles		3940 nm
Avg. Time of Flight		10 hours 25 minutes

Rushmore Heliport to Francisco de Sá Carneiro Airport Flight Route Map - to OPO Flight Path

Location of Rushmore Heliport & Francisco de Sá Carneiro Airport is given below.
Click the map to view Keystone to Porto nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • - OPO

Time difference between Keystone (United States) and Porto (Portugal) is 6 Hours.
Porto time is 6 Hours ahead of Keystone.

Location	Local Time
Keystone (United States)	2026-05-07, 08:19:54 CDT
Porto (Portugal)	2026-05-07, 14:19:54 WEST

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

Rushmore Heliport ( / ) Keystone, United States

Destination

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