Distance From Þórshöfn Airport to Seattle–Tacoma International Airport, THO - SEA Distance

The distance from Þórshöfn Airport (THO) to Seattle–Tacoma International Airport (SEA) is 3698 miles or 5952 kilometers or 3212 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 Þórshöfn ( Iceland ) to Seattle ( United States )?

A one-way nonstop (direct) flight between Þórshöfn and Seattle takes around 8 hours 30 minutes.

Estimated flight time from Þórshöfn Airport, Þórshöfn, Iceland to Seattle–Tacoma International Airport, Seattle, United States is 8 hours 30 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 • THO - SEA

Kilometers		5952 km
Statute Miles		3698 miles
Nautical Miles		3212 nm
Avg. Time of Flight		8 hours 30 minutes

Þórshöfn Airport to Seattle–Tacoma International Airport Flight Route Map - THO to SEA Flight Path

Location of Þórshöfn Airport & Seattle–Tacoma International Airport is given below.
Click the map to view Þórshöfn to Seattle nonstop flight path and travel direction.

Click to see flight route on Google Map between Þórshöfn, Iceland and Seattle, United States. .

Nonstop flight route between Þórshöfn, Iceland and Seattle, United States.

Time Difference Between the Airports • THO - SEA

Time difference between Þórshöfn (Iceland) and Seattle (United States) is 6 Hours.
Seattle time is 6 Hours behind Þórshöfn.

Location	Local Time
Þórshöfn (Iceland)	2026-08-04, 02:25:09 GMT
Seattle (United States)	2026-08-03, 20:25:09 MDT

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

Þórshöfn Airport (THO / BITN) Þórshöfn, Iceland

Destination

Seattle–Tacoma International Airport (SEA / KSEA) Seattle, United States