Distance From Thorne Bay Seaplane Base to Guanacaste Airport, KTB - LIR Distance

The distance from Thorne Bay Seaplane Base (KTB) to Guanacaste Airport (LIR) is 4008 miles or 6450 kilometers or 3481 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.

---

How long does it take to travel from Thorne Bay ( United States ) to Liberia ( Costa Rica )?

A one-way nonstop (direct) flight between Thorne Bay and Liberia takes around 9 hours 12 minutes.

Estimated flight time from Thorne Bay Seaplane Base, Thorne Bay, United States to Guanacaste Airport, Liberia, Costa Rica is 9 hours 12 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 • KTB - LIR

Kilometers		6450 km
Statute Miles		4008 miles
Nautical Miles		3481 nm
Avg. Time of Flight		9 hours 12 minutes

Thorne Bay Seaplane Base to Guanacaste Airport Flight Route Map - KTB to LIR Flight Path

Location of Thorne Bay Seaplane Base & Guanacaste Airport is given below.
Click the map to view Thorne Bay to Liberia nonstop flight path and travel direction.

Click to see flight route on Google Map between Thorne Bay, United States and Liberia, Costa Rica. .

Nonstop flight route between Thorne Bay, United States and Liberia, Costa Rica.

Time Difference Between the Airports • KTB - LIR

Time difference between Thorne Bay (United States) and Liberia (Costa Rica) is 3 Hours.
Liberia time is 3 Hours ahead of Thorne Bay.

Location	Local Time
Thorne Bay (United States)	2026-11-08, 14:43:03 AKST
Liberia (Costa Rica)	2026-11-08, 17:43:03 CST

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

Thorne Bay Seaplane Base (KTB / KTB) Thorne Bay, United States

Destination

Guanacaste Airport (LIR / MRLB) Liberia, Costa Rica