Best islands in Vietnam — Phú Quốc, Côn Đảo, Cát Bà and the rest

Five Vietnamese islands worth visiting and which trip type each suits — Phú Quốc resort holiday, Côn Đảo luxury escape, Cát Bà adventure base, Lý Sơn off-grid, Cù Lao Chàm day-trip.

Published 2026-05-21· 6 min read· Vietnam Knowledge

Last reviewed: 6 July 2026Report outdated info

Tropical beach at Phu Quoc Resort and Spa with clear turquoise waters, white sand, and resort facilities along the shoreline. — Image: Elmschrat · CC0

Vietnam's islands sit on a spectrum from "developed resort destination" to "remote and barely-connected". Each suits a different trip; trying to use Côn Đảo for a budget backpacker week or Phú Quốc for a remote-escape is a category error.

Methodology: ranked on accessibility, beach quality, infrastructure, distinctiveness, and price.

The 5 ranked

1. Phú Quốc (south, Gulf of Thailand)

The largest Vietnamese island; the standard "beach week" answer. Direct international flights from regional hubs (Bangkok, Singapore, Seoul); domestic flights from every major Vietnamese city. 30-day visa-free for direct arrivals from any nationality — a genuine differentiator.

Best for: resort weeks, families, beginner-island travellers
Cost: medium ($80–250/night accommodation)
How to reach: fly direct PQC, or domestic from SGN / HAN / DAD
When: November–April (dry season)

2. Côn Đảo (south, far offshore)

The Galápagos of Vietnam — pristine beaches, sea turtles, French colonial prison history, and the country's only Six Senses. Limited infrastructure (small airport, expensive flights) keeps it quiet. The premium island experience.

Best for: luxury beach weeks, history-and-beach combos, divers
Cost: high (Six Senses from $1,000+/night; budget options scarce)
How to reach: fly Vietnam Airlines / Bamboo from SGN — limited daily flights
When: March–September

3. Cát Bà (north, Hạ Long Bay)

The largest of the Hạ Long Bay islands. National park, kayaking, climbing, beaches on the southern coast. Cát Bà town is workmanlike (not pretty); the rewards are in the surrounding water. Hạ Long / Lan Hạ Bay cruises depart from here.

Best for: adventure travellers, climbers, kayakers
Cost: low–medium ($25–100/night)
How to reach: ferry from Hải Phòng, or combined-ticket from Hanoi
When: March–October

4. Lý Sơn (central, off Quảng Ngãi)

The "garlic island" — a working farming community on a volcanic outcrop. Black sand, basalt formations, no resorts, two small homestays. Best for travellers who want to walk an island in a day and eat at family homes.

Best for: off-grid escape, photographers, slow-travel weekenders
Cost: low ($20–50/night)
How to reach: ferry from Sa Kỳ (Quảng Ngãi) — weather-dependent
When: April–August (calm seas)

5. Cù Lao Chàm (central, off Hội An)

A protected marine reserve; 20-minute speedboat from Cửa Đại beach near Hội An. Best as a day-trip or single overnight. Diving, snorkelling, an empty beach by Vietnamese-tourism standards.

Best for: Hội An visitors, day-trip snorkellers
Cost: medium for tour, low for stay
How to reach: speedboat from Cửa Đại / Cửa Đại beach
When: March–September (closed off-season for safety)

Honourable mentions

Phú Quý (Bình Thuận coast) — emerging escape, basic infrastructure
Bình Hưng (Khánh Hòa) — small fishing-village island
Nam Du archipelago (south) — backpacker-secret cluster of small islands
Bái Tử Long islands (north) — the quieter neighbour of Hạ Long Bay

Which island for which trip?

Trip	Pick
Resort beach week	Phú Quốc
Luxury escape	Côn Đảo
Family beach + kid food	Phú Quốc
Diving	Côn Đảo, Cù Lao Chàm, Phú Quốc in that order
Adventure / climbing / kayak	Cát Bà
Off-grid / homestay / quiet	Lý Sơn, Nam Du
Day-trip from Hội An	Cù Lao Chàm
Day-trip from Hanoi	Cát Bà (more a 2-night base than day-trip)

What the rankings don't cover

Diving certification: Phú Quốc is the best place to get certified (cheap, English-speaking instructors). Côn Đảo is best to dive after certification.
Visa-day-trip strategy: Phú Quốc's 30-day visa-free is genuinely useful for travellers who don't qualify for the standard visa-free programme.
Hidden costs: Côn Đảo's flight cost makes it premium-only; Phú Quốc's domestic flights are routinely under $50 one-way.

Frequently asked questions

Which Vietnamese island is best for a first-time resort holiday?

Phú Quốc is typically the best pick for a first island trip — it has direct international flights, resorts from roughly $80–250 a night, and a 30-day visa-free policy for direct arrivals. It suits families and beginner-island travellers best, ideally during the November–April dry season.

Which island offers the most luxurious escape?

Côn Đảo is generally considered Vietnam's premium island experience, home to the country's only Six Senses resort and less-developed, pristine beaches. Limited flights and high accommodation costs (from around $1,000+/night at the top end) keep it quieter than Phú Quốc, with March–September usually the best window to visit.

Which island is best for adventure activities like kayaking or climbing?

Cát Bà, the largest island in Hạ Long Bay, is usually the top choice for kayaking, climbing, and national-park hikes, and it also serves as the departure point for many Hạ Long and Lan Hạ Bay cruises. It's typically visited between March and October.