4 Islands Tour Koh Lanta: Stops, Boat Type, Cost & Tips

Featured image: Marcin Konsek, CC BY-SA 4.0, via Wikimedia Commons.

Quick Answer: What the 4 Islands Trip Is

Operators run the tour daily from Lanta Old Town Pier. Hotel pickup falls between roughly 07:45 and 09:00, depending on the operator and your beach. One longtail itinerary lists a 7-hour tour with a return to the pier around 15:30. Speedboat versions follow a similar shape with faster crossings. Prices and hours checked November 2026.

• Duration: about 7 hours on the water, longer with hotel transfers
• Typical stops: Koh Chuek, Koh Mook (Emerald Cave), Koh Ngai, plus Koh Kradan or Koh Maa
• Boat types: longtail or speedboat
• Park fee: ฿200 per adult and ฿100 per child, paid in cash on the day
• Busiest season: November to April

Which Islands Are on the 4 Islands Koh Lanta Tour

There is no single fixed route. Two common versions share Chuek, Mook and Ngai but differ on the fourth stop and the lunch spot. A longtail itinerary adds Koh Maa and serves lunch on Koh Ngai. A speedboat itinerary adds Koh Kradan and serves a buffet lunch there. Spelling also varies on booking sites: Chuek or Chueak, Maa or Mah, Mook or Muk. Koh Rok and Koh Ha are different day trips, so do not mix them up with this one.

• Koh Chuek: a small limestone islet with sea caves, used for open-water snorkeling
• Koh Mook: the largest island on the route, home to the Emerald Cave
• Koh Ngai: a long beach and lunch stop on the longtail version; see the Koh Ngai beaches guide
• Koh Kradan: lunch and beach time on the speedboat version; read about Koh Kradan's beach
• Koh Maa: a second snorkeling stop on the longtail version

Longtail vs Speedboat

Boat type shapes your day more than the stop list does. Longtails are slower and louder, and one reviewer on a small wooden boat preferred the speedboat. Speedboats cover the distance faster, which suits travelers prone to boredom on long crossings. Compare your options with the wider Koh Lanta snorkeling options before you book.

A Typical Day, Hour by Hour

One longtail operator publishes this schedule. It runs from 07:45 pickup to a 16:00 hotel drop-off. Cruising to the first stop takes about 45 minutes. Speedboat tours allow about 40 minutes of snorkeling at each of Chuek and Ngai. Expect weather and sea conditions to shift the program.

• 07:45–08:30: hotel pickup on Koh Lanta
• 08:30–09:00: meet the crew at Lanta Old Town Pier
• 09:00–09:45: cruise to the islands
• 09:45–11:00: snorkeling at Koh Chuek
• 11:00–12:00: Emerald Cave swim on Koh Mook
• 12:00–13:00: lunch on Koh Ngai
• 13:30–14:30: snorkeling at Koh Maa
• 14:30–15:30: return to the pier, then transfer to your hotel

The Emerald Cave: Tides, Swimming and What to Bring

Koh Mook's Emerald Cave (Tham Morakot) is the highlight of the day. The entrance sits on the west side of the island and is reachable only at low tide. Inside, you swim roughly 80 m through darkness to a hidden lagoon and a small white beach. Our Emerald Cave swim guide covers the cave in more detail. Wear your life jacket and use the guide's light or bring a small torch. Water shoes help on rocks and shells. Keep phones and cash in a waterproof bag. Ask your operator which time of day gives the best tide and the thinnest crowds.

Cost: What You Pay and What Is Extra

Operator pages list a speedboat tour at ฿1,349 per adult and ฿699 per child. A longtail operator lists ฿1,000 per adult. Both add the Hat Chao Mai National Park fee of ฿200 per adult and ฿100 per child, paid separately in cash. For fee rules, see the national parks department. Two adults on the speedboat rates pay ฿2,698 plus ฿400 in fees, or ฿3,098 in total. Snorkel mask, life jacket, guide, insurance, soft drinks and fruit are normally included. Fins are not always provided, so ask before you go.

• Tour ticket per person
• Park fee in cash at check-in
• Fins if the operator does not supply them
• Towel, if not included
• Tips and extra drinks

Best Time to Go and Weather Risks

High season runs from November to April. Seats sell out fast in that window and on national holidays, so book early. In the low season, May to October, monsoon seas can change the program, and one operator suspends the Koh Chuek stop. Trips can be postponed or cancelled for rough weather, usually with a refund. Ask what the operator offers if the sea is too rough.

Pickup, Pier and Logistics from Your Lanta Beach

Pickups cover the main-road beaches: Kantiang Bay, Klong Nin, Klong Khong, Long Beach, Pra Ae, Klong Dao and Kow Kwang. The operator confirms your exact time by email after booking. Meet at Lanta Old Town Pier at least 30 minutes before departure. Wait at reception during the pickup window instead of heading to breakfast. One traveler reported a minivan leaving after 15 minutes. Some reviewers mention pickups running about 20 minutes late. If no one shows, call the operator's support line right away.

Is It Right for You? Who Should Skip It

Some travelers should pick another trip. One longtail operator advises against it for pregnant women, infants under 2 years, and people with back or neck problems. Nervous swimmers can manage with a life jacket, but the Emerald Cave swim in the dark is not for everyone. Anyone who dislikes crowded boats should consider a smaller private option.

4 Islands vs Koh Rok, DIY and Other Lanta Snorkel Trips

Pick the 4 Islands trip for variety: a cave swim, beaches and snorkeling in one day. The Koh Rok day trip is a separate trip that focuses on snorkeling at different islands. For a single-island visit, browse snorkeling tour options from Lanta. Hoping for something quieter nearby? Look at Koh Libong Travel Guide: Dugongs, Getting There, Worth It?.

How to Book and What to Ask the Operator

Book directly or via an agent, but check the actual stop list first. One agent offers free cancellation up to 24 hours before departure and a deposit option. A longtail operator closes bookings about 11 hours before departure. Last-minute seats may need a message to the operator.

• Exact islands and lunch stop
• Boat type and group size
• Park fee: amount and payment method
• Fins and towel included or not
• Vegetarian or halal lunch options
• Cancellation policy and weather refund
• Latest booking cutoff

Responsible-Visit Tips

Do not touch or stand on corals. Use reef-safe sunscreen and take your trash back to the boat. Some operators feed fish with bread, but park guidance may discourage this, so follow your guide and the park's own rules. The ฿200 adult park fee helps rangers keep the area clean, according to one operator.