6 Four-Island Tours in Ko Lanta to Build a Day Around

1.4 Islands and Emerald Cave Tour by Longtail Boat

★★★★★★★★★★4.5 · 507 reviews · 7 hours · from $35Our pick

A 7-hour long-tail boat island day in Koh Lanta with snorkeling, Morakot Emerald Cave, a green lagoon swim-through, and Thai beach lunch.

“An amazing day trip with a good amount of time spent at each stop. Beautiful beaches, great snorkelling spots and the cave was incredible. Hosts were all very friendly and the curry for lunch was delicious. Highly recommended. If you are prone to seasickness I suggest bringing some medication to help as it can get quite choppy”

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2.4 Islands Snorkeling Tour by Longtail Boat

★★★★★★★★★★4.1 · 297 reviews · 6 hours · from $31

Four islands by longtail boat near Ko Lanta, clear snorkels, a Morakot Emerald Cave swim, and a beach buffet lunch at Koh Ngai.

“The emerald cave was stunning however to enter you basically jump into the sea(which was quite rough on our day!) then you follow the guide by basically bobbing/swimming into the dark cave they have flash lights and then you appear in this magical area. There were a few big boats at the same time as us so it was a bit chaotic trying to keep an eye on where your guide was!! If you are not a confident swimmer then I wouldn’t recommend. The snorkelling spots were ok but very cloudy. A lot of long tail boats at the same time. You do all your snorkelling and swimming first then…”

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3.4-Island Tour from Koh Lanta to Koh Kradan with Beach Lunch

★★★★★★★★★★4.6 · 182 reviews · from $43

A full day of island hopping from Koh Lanta to Ko Kradan, Ko Mook, Ko Ngai, and Ko Chuek, with snorkeling and beach lunch.

“We enjoyed this day very much! Beautiful beaches, the cave was nice and the guide very friendly and fun :) We can definitely recommend this tour!”

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4.4-Island Adventure Tour to Emerald Cave

★★★★★★★★★★4.6 · 128 reviews · 7h 30m · from $51

A fast-paced Koh Lanta boat day to Koh Mook’s Emerald Cave, snorkel reefs at Kradan and Chuak, then relax on Koh Ngai.

“This was a fun day with lots of stunning views. The last stop is on a spectacular beach. The guide (Non) was exceptional, as well as the entire boat crew. Highly recommend!”

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5.Emerald Cave & 4 Islands Snorkel Tour by Longtail

★★★★★★★★★★4.3 · 95 reviews · from $28Best value

Longtail tour from Koh Lanta to Emerald Cave and 4 islands, with hotel pickup, snorkel gear, beach lunch, and a lagoon swim.

“A good day out. Unfortunately the Emerald Cave which promised to be the highlight (based on others' reviews) was packed full of school trips and other tourists; which the tour company cannot control so is not their fault. When entering and exiting the cave there was so many people swimming through that you were constantly being kicked and at risk of being pushed under as rude individuals did what they wanted, rather than wait patiently - feeding this back just to help prepare other tourists for what to expect. The first snorkel spot was perfect; very clear water, saw lots of fish and not many people. The second spot; the…”

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6.Emerald Cave and 4 Islands Tour by Longtail Boat

★★★★★★★★★★4.1 · 77 reviews · 8 hours · from $34

Ko Lanta Emerald Cave and 4 Islands by longtail boat. Snorkel coral, swim into Emerald Cave, picnic on Koh Ngai, feed fish.

“Once we booked with GYG, we got a direct number to WhatsApp the local company. They were fantastic! As we had a small baby with us, they suggested changing the date so the sea would be less choppy - at no expense. A great choice, as although still quite a wild ride, it would have been horrendous in bad weather! The guides were lovely, and great value for money.”

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