Distance From Union Island International Airport to Guanacaste Airport, UNI - LIR Distance

The distance from Union Island International Airport (UNI) to Guanacaste Airport (LIR) is 1639 miles or 2638 kilometers or 1423 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 Union Island ( Saint Vincent and the Grenadines ) to Liberia ( Costa Rica )?

A one-way nonstop (direct) flight between Union Island and Liberia takes around 3 hours 46 minutes.

Estimated flight time from Union Island International Airport, Union Island, Saint Vincent and the Grenadines to Guanacaste Airport, Liberia, Costa Rica is 3 hours 46 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 • UNI - LIR

Kilometers		2638 km
Statute Miles		1639 miles
Nautical Miles		1423 nm
Avg. Time of Flight		3 hours 46 minutes

Union Island International Airport to Guanacaste Airport Flight Route Map - UNI to LIR Flight Path

Location of Union Island International Airport & Guanacaste Airport is given below.
Click the map to view Union Island to Liberia nonstop flight path and travel direction.

Click to see flight route on Google Map between Union Island, Saint Vincent and the Grenadines and Liberia, Costa Rica. .

Nonstop flight route between Union Island, Saint Vincent and the Grenadines and Liberia, Costa Rica.

Time Difference Between the Airports • UNI - LIR

Time difference between Union Island (Saint Vincent and the Grenadines) and Liberia (Costa Rica) is 2 Hours.
Liberia time is 2 Hours behind Union Island.

Location	Local Time
Union Island (Saint Vincent and the Grenadines)	2026-03-15, 04:54:37 AST
Liberia (Costa Rica)	2026-03-15, 02:54:37 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

Union Island International Airport (UNI / TVSU) Union Island, Saint Vincent and the Grenadines

Destination

Guanacaste Airport (LIR / MRLB) Liberia, Costa Rica