Distance From Thompson Falls Airport to Keflavik International Airport, THM - KEF Distance

The distance from Thompson Falls Airport (THM) to Keflavik International Airport (KEF) is 3420 miles or 5504 kilometers or 2970 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 Thompson Falls ( United States ) to Reykjavík ( Iceland )?

A one-way nonstop (direct) flight between Thompson Falls and Reykjavík takes around 7 hours 51 minutes.

Estimated flight time from Thompson Falls Airport, Thompson Falls, United States to Keflavik International Airport, Reykjavík, Iceland is 7 hours 51 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 • THM - KEF

Kilometers		5504 km
Statute Miles		3420 miles
Nautical Miles		2970 nm
Avg. Time of Flight		7 hours 51 minutes

Thompson Falls Airport to Keflavik International Airport Flight Route Map - THM to KEF Flight Path

Location of Thompson Falls Airport & Keflavik International Airport is given below.
Click the map to view Thompson Falls to Reykjavík nonstop flight path and travel direction.

Click to see flight route on Google Map between Thompson Falls, United States and Reykjavík, Iceland. .

Nonstop flight route between Thompson Falls, United States and Reykjavík, Iceland.

Time Difference Between the Airports • THM - KEF

Time difference between Thompson Falls (United States) and Reykjavík (Iceland) is 7 Hours.
Reykjavík time is 7 Hours ahead of Thompson Falls.

Location	Local Time
Thompson Falls (United States)	2025-12-15, 00:23:14 MST
Reykjavík (Iceland)	2025-12-15, 07:23:14 GMT

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

Thompson Falls Airport (THM / KTHM) Thompson Falls, United States

Destination

Keflavik International Airport (KEF / BIKF) Reykjavík, Iceland