Lesser Sunda Islands

The Lesser Sunda Islands are an island chain in southern Indonesia stretching east from Bali toward Timor and forming part of the greater Sunda Archipelago. The group includes well-known islands such as Lombok, Sumbawa, Flores, Sumba and Timor, plus numerous smaller islets.

The islands are predominantly volcanic and range from high, rugged volcanic peaks to low coral islands; many have active or dormant volcanoes and a mix of dry monsoon and wet tropical climates. Marine biodiversity is high around the islands and the region contains several important national parks and protected marine areas.

Human settlement, agriculture and inter-island trade have shaped distinct local cultures on each major island; tourism has grown especially on Lombok and parts of Flores. Transport between islands is by ferry and air services linking the main population centres.

Geographically the chain lies east of Bali across the Lombok Strait and extends roughly to Timor, forming part of eastern Indonesia and separating the Java Sea and Indian Ocean to the south from the Flores Sea to the north.

• Biogeography: The island chain lies within the biogeographical zone Wallacea where Asian and Australasian flora and fauna mix, producing high biodiversity and many endemic species.

What to See#

• Lombok: Lombok - volcanic island east of Bali known for Mount Rinjani, beaches and cultural differences from Bali.
• Flores: Flores - island containing Komodo National Park (western Flores and neighbouring islands) and known for rugged landscapes and Kelimutu volcanic lakes.
• Sumbawa and Sumba: Sumbawa and Sumba - larger islands east of Lombok and Flores with distinct ecosystems and cultural groups, including beaches and inland plains.
• Timor: Timor (West Timor within Indonesia) - the largest island in the group, shared with the sovereign state of Timor-Leste to the east.

The Lesser Sunda Islands are reached from Bali (Ngurah Rai/Denpasar Airport) as a regional hub. From Bali you can continue east by frequent domestic flights to Lombok (Praya), Sumbawa, Flores (Labuan Bajo) and Timor, or travel by ferry: regular ferry routes run from eastern Bali (Padangbai/Lembar) to Lombok and onward inter-island ferries connect Lombok-Sumbawa-Flores.

Internal travel between islands is by domestic flights, ferries or local boats; schedules and crossing times vary by route and island.

• For the best weather and sea conditions across the Lesser Sunda Islands (Nusa Tenggara), travel in the dry season (roughly April-October) when inter-island boat and flight services are most reliable.
• Inter-island connections rely on a mix of small planes and ferries with limited schedules - book flights and ferries in advance, and allow extra travel time for weather-related delays when island-hopping beyond Bali and Lombok.
• If you want fewer crowds, skip the most-visited hubs (southern Bali, central Lombok) and head to lesser-touristed islands such as Sumbawa, Sumba or Flores-accommodation and services are more limited, so pre-booking is recommended.