Distance From Ashford Field to Francisco de Sá Carneiro Airport

The distance from Ashford Field () to Francisco de Sá Carneiro Airport (OPO) is 4551 miles or 7323 kilometers or 3952 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 Old Boston ( United States ) to Porto ( Portugal )?

A one-way nonstop (direct) flight between Old Boston and Porto takes around 10 hours 27 minutes.

Estimated flight time from Ashford Field, Old Boston, United States to Francisco de Sá Carneiro Airport, Porto, Portugal is 10 hours 27 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		7323 km
Statute Miles		4551 miles
Nautical Miles		3952 nm
Avg. Time of Flight		10 hours 27 minutes

Ashford Field to Francisco de Sá Carneiro Airport Flight Route Map - to OPO Flight Path

Location of Ashford Field & Francisco de Sá Carneiro Airport is given below.
Click the map to view Old Boston to Porto nonstop flight path and travel direction.

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

Nonstop flight route between Old Boston, United States and Porto, Portugal.

Time Difference Between the Airports • - OPO

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

Location	Local Time
Old Boston (United States)	2026-05-01, 12:44:19 EDT
Porto (Portugal)	2026-05-01, 17:44:19 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

Ashford Field ( / 7TX9) Old Boston, United States

Destination

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