Getting Between Stops
This route is all road, with one boat across the lake. Phuket airport to Khao Lak takes about 1 hour 15 minutes. Khao Lak to the Khao Sok park village is roughly an hour and a half. The lake pier is about another hour from the village. Khao Sok to Koh Lanta takes about four hours, including the car ferry.
Book a private car for each leg. Your Khao Sok lodge can arrange both transfers and will time the lake boat for you. There is no public transport inside the park.
On Koh Lanta, a car with a driver for the day is cheap and safer than a scooter. Tuk-tuk style motorbike taxis wait at every beach for short trips. In the dry season, ferries and speedboats also link Lanta with Koh Phi Phi, Ao Nang and Phuket, which gives you a way to add another island.
Where to Stay
In Khao Lak, the JW Marriott Khao Lak Resort and Spa is famous for its very long pool. The Sarojin is smaller and design-focused, with a strong reputation for service. Le Meridien Khao Lak is another large resort on the northern beaches. The beaches around Khuk Khak and Pakarang are quieter than Bang La On in the south.
In Khao Sok, choose a jungle lodge near the park village for the first night and a floating stay on the lake for the second. Elephant Hills is the comfortable choice on the water, with private bathrooms in each tent.
On Koh Lanta, Pimalai Resort and Spa sits on a hillside above Kantiang Bay with pool villas. The north end around Long Beach suits couples who like to walk to dinner. The south is quieter, with a few resorts and simple bungalows.
When to Go
January to March is the best window. The Andaman Sea is calm, the sky is reliable and Khao Sok is at its driest, with firmer trails and fewer leeches. February is often the least rainy month in the rainforest. December is a close second, though Christmas and New Year bring peak prices on the coast.
The Similan Islands National Park opens only in the dry season, roughly from fall until mid-May, so check its exact dates if snorkeling there is a priority.
From May to October, the southwest monsoon brings heavy rain and big waves. Many smaller places on Lanta close, ferries stop and Khao Lak's sea is often too rough to swim. Khao Sok gets very wet from August to November. If you can only travel in summer, Thailand's Gulf islands are the better choice.
Budget and Booking
Plan on roughly $250–800 a night for two at good resorts in Khao Lak and on Koh Lanta, more for Pimalai villas and over the holidays. Khao Sok lake stays are usually sold as packages priced per person, with meals, boat transfers and guided activities included. All figures are approximate.
Book Khao Sok first if you want Elephant Hills or a specific raft, since the comfortable options are limited. Then book Koh Lanta and Khao Lak.
Other costs include the Similans day trip, the Koh Rok or Koh Mook boat trip, national park entrance fees, private cars between stops and a driver for a day on Lanta. Seafood dinners on the beach are inexpensive by US standards, so save your splurge for one special night.
Make It Shorter or Longer
For nine days, cut Khao Lak to two nights, keep one night on the lake and spend four nights on Koh Lanta. You lose the Similans but keep the shape.
With two weeks, add three nights in Bangkok at the start. It is a short flight to Phuket and gives you temples, river views and street food before the beaches.
Or add Koh Yao Noi between Khao Lak and Lanta. It sits in Phang Nga Bay about 30 minutes by boat from Phuket's east coast, with rice paddies, fishing villages and limestone views. Couples who want a night of energy could add Koh Phi Phi, which is linked to Lanta by ferry in the dry season, though it is busier than anywhere else on this route.
Honeymoon Tips
Respect red flags on the beaches of Khao Lak and Koh Lanta. Currents can be strong, especially outside the calm months. Swim where others are swimming.
Pack light for the lake. Many camps ask you to leave big bags with your driver or at the pier. Bring a dry bag, a headlamp, repellent and quick-dry clothes.
Scooters are widely rented on Lanta, but accidents are common and travel insurance may not cover you without the right license. Hire a car with a driver instead.
Dengue is present in Thailand, so use repellent at dawn and dusk. If you're pregnant or hoping to be soon, check CDC travel health notices before booking. Bring reef-safe sunscreen and a rash guard for snorkel days, when the sun on the water is fierce.
