Distance From Seal Bay Seaplane Base to Francisco de Sá Carneiro Airport, SYB - OPO Distance

The distance from Seal Bay Seaplane Base (SYB) to Francisco de Sá Carneiro Airport (OPO) is 5241 miles or 8435 kilometers or 4552 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 Seal Bay ( United States ) to Porto ( Portugal )?

A one-way nonstop (direct) flight between Seal Bay and Porto takes around 12 hours 3 minutes.

Estimated flight time from Seal Bay Seaplane Base, Seal Bay, United States to Francisco de Sá Carneiro Airport, Porto, Portugal is 12 hours 3 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 • SYB - OPO

Kilometers		8435 km
Statute Miles		5241 miles
Nautical Miles		4552 nm
Avg. Time of Flight		12 hours 3 minutes

Seal Bay Seaplane Base to Francisco de Sá Carneiro Airport Flight Route Map - SYB to OPO Flight Path

Location of Seal Bay Seaplane Base & Francisco de Sá Carneiro Airport is given below.
Click the map to view Seal Bay to Porto nonstop flight path and travel direction.

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

Nonstop flight route between Seal Bay, United States and Porto, Portugal.

Time Difference Between the Airports • SYB - OPO

Time difference between Seal Bay (United States) and Porto (Portugal) is 9 Hours.
Porto time is 9 Hours ahead of Seal Bay.

Location	Local Time
Seal Bay (United States)	2026-05-07, 06:18:27 AKDT
Porto (Portugal)	2026-05-07, 15:18:27 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

Seal Bay Seaplane Base (SYB / ) Seal Bay, United States

Destination

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