Distance From Grand Lake Regional Airport to Francisco de Sá Carneiro Airport, NRI - OPO Distance

The distance from Grand Lake Regional Airport (NRI) to Francisco de Sá Carneiro Airport (OPO) is 4445 miles or 7154 kilometers or 3860 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 Afton ( United States ) to Porto ( Portugal )?

A one-way nonstop (direct) flight between Afton and Porto takes around 10 hours 13 minutes.

Estimated flight time from Grand Lake Regional Airport, Afton, United States to Francisco de Sá Carneiro Airport, Porto, Portugal is 10 hours 13 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 • NRI - OPO

Kilometers		7154 km
Statute Miles		4445 miles
Nautical Miles		3860 nm
Avg. Time of Flight		10 hours 13 minutes

Grand Lake Regional Airport to Francisco de Sá Carneiro Airport Flight Route Map - NRI to OPO Flight Path

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

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

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

Time Difference Between the Airports • NRI - OPO

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

Location	Local Time
Afton (United States)	2026-11-01, 09:08:42 EST
Porto (Portugal)	2026-11-01, 14:08:42 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

Grand Lake Regional Airport (NRI / 3O9) Afton, United States

Destination

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