Koh Samui Koh Tao Day Trip: Tour vs Ferry, Costs, Nang Yuan

Overview

A Koh Samui to Koh Tao day trip is doable in a single long day, either as an organised speedboat snorkel tour (roughly 1,800-3,500 THB / ~51-100 USD per person) or as an independent round trip on the scheduled Lomprayah or Seatran Discovery ferry (from about 600 THB / ~17 USD each way). Koh Tao, whose name means Turtle Island in Thai, is about 70 km north of Samui. Either way, the crossing runs about 1.5-2 hours each way, which means 3-4 hours on the water before you even reach Koh Nang Yuan, the three-islet sandbar that most people are really coming for. This guide covers both routes, what a typical day looks like hour by hour, and an honest read on whether the long boat legs are worth it.

This is one of the most popular add-on trips from Koh Samui, alongside Ang Thong Marine Park and Koh Phangan hops: see our day trips overview for how it compares to the island’s other full-day excursions. If you’d rather stay overnight on Koh Tao instead of rushing the crossing twice in one day, the dedicated Koh Samui to Koh Tao ferry guide covers every operator, pier and schedule in detail.

Key takeaways

• Organised snorkel tours run ~1,800-3,500 THB (~51-100 USD) per person, including hotel pickup, gear and lunch, but not Koh Nang Yuan’s entrance fee.
• DIY on Lomprayah or Seatran costs from about 600 THB (~17 USD) one way, but you arrange snorkeling and the Nang Yuan longtail yourself.
• Koh Nang Yuan charges a separate cash entrance fee, about 250 THB (~7 USD) per adult (sources give 200-300 THB), as of Sep 2026.
• Expect a 10-12 hour door-to-door day: 3-4 hours of that is spent on boats, not islands.
• The viewpoint hike gets crowded from around 11:00 once the big day-tour boats land: arrive early if photos matter.

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Is Koh Tao the Turtle Island Near Koh Samui?

Yes: Koh Tao means Turtle Island in Thai, so searches for Turtle Island from Koh Samui usually mean this trip. Koh Tao lies about 70 km north of Samui and is known for snorkeling and diving. Koh Nang Yuan, the three-islet sandbar most day-trippers come for, sits just off Koh Tao’s north-west coast. Tour listings may call the day out “Koh Tao and Koh Nang Yuan” or “Turtle Island”, and both are the same trip. For the ferry options in full, see the Samui to Koh Tao ferry guide.

Getting to Koh Tao and Koh Nang Yuan in a Day

The fastest same-day option is Lomprayah’s high-speed catamaran, departing Maenam pier around 08:00 and reaching Mae Haad Pier on Koh Tao in about 1.5-2 hours for 650-740 THB (~19-21 USD) one way. Return sailings leave Mae Haad in the afternoon (listings show about 14:45-16:30, and sources disagree), which can leave as little as 4-6 hours on Koh Tao and Koh Nang Yuan combined: check the last boat before you commit. Cross-check current departure times against 12Go Asia before booking, since schedules shift seasonally. Seatran Discovery runs a steadier, slightly slower service from Bang Rak pier, taking about 2-2.5 hours each way for about 600 THB (~17 USD), with one or two sailings a day. Full departure tables, pier locations and which one suits which Samui beach are in the Koh Samui to Koh Tao guide and the ferry piers guide.

Neither scheduled ferry stops at Koh Nang Yuan: both land at Mae Haad on Koh Tao’s west coast, so an independent visitor needs a separate longtail taxi boat to reach Koh Nang Yuan, roughly 100-250 THB (~3-7 USD) per person each way depending on where you board and how well you negotiate, taking 15-40 minutes from Mae Haad or Sairee Beach. Organised tours skip this step entirely by running their own speedboat direct to Koh Nang Yuan’s beach, then on to one or two Koh Tao snorkel stops such as Mango Bay or Ao Muang (Shark Bay).

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Organised Snorkel Tour vs Independent Ferry

An organised snorkel tour is the simpler choice for most visitors: hotel pickup, a single speedboat direct to Koh Nang Yuan and one or two Koh Tao snorkel stops, plus lunch and gear, all for a fixed 1,800-3,500 THB (~51-100 USD) per person. Prices vary a lot between operators and booking platforms: a walk-in agent quote and a pre-booked Viator or Klook tour for the same boat can differ by hundreds of baht, so compare a couple of listings before paying. The trade-off is a fixed, often rushed schedule and a boat shared with 15-30 other tourists.

Going independently on Lomprayah or Seatran costs less for the ferry itself (from about 600 THB one way) but adds logistics: buying the longtail boat to Koh Nang Yuan separately, arranging your own snorkel gear or renting it on Koh Tao, and working around the fixed ferry departure times rather than a door-to-door pickup. It suits travelers who already plan to explore Koh Tao’s dive shops or Sairee Beach independently and don’t want a group-tour pace.

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Koh Nang Yuan Entrance Fee and Rules

Koh Nang Yuan charges a cash entrance fee on arrival, about 250 THB (~7 USD) per adult (sources give 200-300 THB) and less for children, though a few older sources quote lower figures: confirm the current rate with your tour or at the pier, since it is set by the resort managing the island rather than a fixed government tariff. Overnight guests of Nang Yuan Island Dive Resort are typically exempt since the fee is bundled into their room rate. Most organised day tours do not include this fee in the advertised price, so budget for it separately in cash: card payment is not reliably available on the island.

Single-use plastic bottles are banned on Koh Nang Yuan; bring a reusable bottle or buy a drink on arrival, since bottles are checked before you’re allowed to disembark. The famous three-islet viewpoint sits atop a short, steep trail (about 15-25 minutes each way with some rock scrambling near the top) so proper shoes, not flip-flops, make the climb easier and safer.

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A Koh Tao and Koh Nang Yuan Day Trip, Hour by Hour

A typical organised tour runs a full 10-hour door-to-door day. Independent travelers on the first Lomprayah sailing follow a similar shape, just with a longtail boat swapped in for the tour’s direct speedboat leg.

Arriving at Koh Nang Yuan before 11:00 matters more than any other timing decision on this trip: the viewpoint’s single narrow platform gets a genuine queue once the bigger Koh Samui and Koh Phangan tour boats land mid-morning, and the sandbar itself gets noticeably busier and less photogenic by early afternoon.

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Is the Koh Tao Day Trip from Koh Samui Worth It?

Honestly, it depends on how you feel about long boat legs. A round trip puts you on a boat for 3-4 hours out of a roughly 10-hour day, which is a bigger share of the day than most Koh Samui excursions: Ang Thong Marine Park, by comparison, involves less open-water transit once you’re inside the park’s sheltered islands. If you get seasick easily or dislike spending half a vacation day traveling, this trip asks more of you than most.

Against that, Koh Nang Yuan’s sandbar and viewpoint are genuinely among the most photographed spots in Thailand, and the snorkeling around both Koh Nang Yuan and Koh Tao is noticeably clearer than anything reachable directly from Samui’s own shores: see our snorkeling guide for how Samui’s shore spots and boat trips compare. If you have one spare day, want the postcard view without booking a hotel, and don’t mind a long day of travel for a shorter window on land, it is worth doing. If you can spare an extra night instead, staying over lets you see Koh Nang Yuan at sunrise before the day-tripper boats arrive, and gives time for comparing Koh Samui and Koh Tao properly rather than rushing both crossings in one day. Travelers planning a longer loop through the Gulf islands should also look at the Koh Samui, Koh Phangan and Koh Tao route, which spreads this same crossing across a multi-day itinerary instead of a single exhausting day.

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Practical Tips

• Book 1-2 days ahead for organised tours in high season (Dec-Feb); scheduled ferries run only 2-3 sailings a day each, so DIY travelers should reserve seats rather than walk up.
• Take motion sickness tablets 30-60 minutes before departure if prone to seasickness: this crossing is longer and more exposed than the short Koh Samui-Koh Phangan hop.
• Bring cash for the Koh Nang Yuan entrance fee, lunch add-ons, and any independent longtail boat: card payment is unreliable on both islands.
• Check the forecast during the Nov-Dec monsoon; rough seas cancel or delay sailings on this route first, before the shorter inter-island hops.
• Pack a reusable water bottle: Koh Nang Yuan bans single-use plastic bottles on arrival.

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FAQ

How much does a Koh Tao day trip from Koh Samui cost?

An organised snorkel tour to Koh Tao and Koh Nang Yuan typically costs 1,800-3,500 THB (~51-100 USD) per person, including hotel pickup, speedboat transfers, gear and lunch, but usually excluding Koh Nang Yuan’s entrance fee. Going independently on the Lomprayah or Seatran ferry costs about 1,200-1,500 THB (~34-43 USD) round trip, plus a separate longtail boat to Koh Nang Yuan and any gear rental.

How much is the Koh Nang Yuan entrance fee?

Koh Nang Yuan charges a cash entrance fee on arrival, about 250 THB (~7 USD) per adult as of Sep 2026 (sources give 200-300 THB). Most day tour prices do not include this fee, so budget for it separately and pay in cash.

Can you do a Koh Tao day trip from Koh Samui without a tour?

Yes: take the Lomprayah ferry from Maenam pier or Seatran Discovery from Bang Rak pier, both roughly 1.5-2 hours each way, then hire a longtail taxi boat from Mae Haad or Sairee Beach to reach Koh Nang Yuan (15-40 minutes, ~100-250 THB each way). This costs less than an organised tour but requires arranging your own snorkel gear and timing your day around the fixed ferry schedule.

Is Koh Tao nicer than Koh Samui?

Neither is nicer overall: Koh Tao is small, known for snorkeling and diving, and cheaper to sleep on, while Samui is bigger with more resorts, restaurants and beaches. For a day, Koh Tao’s strength is clear water and Koh Nang Yuan. See Koh Samui vs Koh Tao.

How long is the boat ride from Koh Samui to Koh Tao?

The crossing takes about 1.5-2 hours each way on the scheduled Lomprayah or Seatran Discovery ferry, or a similar 1.5-2 hours on an organised tour’s speedboat. Round trip, that is 3-4 hours of the day spent on the water, out of a typical 10-12 hour door-to-door day trip.

Is the Koh Tao and Koh Nang Yuan day trip from Koh Samui worth it?

It is worth it if you want Koh Nang Yuan’s sandbar and viewpoint without booking an overnight stay, and don’t mind that roughly a third of the day is spent traveling rather than on the islands. Arrive at Koh Nang Yuan before 11:00 to beat the crowds. Divers or anyone wanting a relaxed pace should consider staying overnight on Koh Tao instead.

What should I pack for a Koh Tao day trip from Koh Samui?

Bring cash for the Koh Nang Yuan entrance fee and any add-ons, a reusable water bottle (single-use plastic is banned on Koh Nang Yuan), reef-safe sunscreen, proper shoes for the steep viewpoint trail, and motion sickness tablets if you’re prone to seasickness on longer crossings.