The journey from Koh Lanta to Koh Samui — or in reverse, from Koh Samui to Koh Lanta — is one of the great island-hopping routes in Thailand. It connects two of the country's most beautiful and distinct island experiences across opposite coasts of the Thai peninsula.
The koh lanta koh samui crossing spans Koh Samui in the Gulf of Thailand (east coast) to Koh Lanta in the Andaman Sea (west coast), with the southern Thai peninsula and the city of Surat Thani in between. Options range from 5-hour budget combos to 1-hour flights. This is the most complete guide to the route in 2026 — every option, every price, every travel time.
According to the Tourism Authority of Thailand, the Koh Samui to Koh Lanta corridor is one of the most travelled inter-island routes in Thailand — with an estimated 80,000+ travellers making the crossing annually, the vast majority during the November–April dry season when both destinations are at their best simultaneously.
⛴️ Book Koh Lanta to Koh Samui via 12Go Asia →
Koh Lanta Koh Samui — Quick Comparison of All Routes
| Route Option | Total Time | Price | Comfort | Best For |
|---|---|---|---|---|
| 🏆 Ferry + Bus + Ferry (combo) | 5–7h | 600–900 THB | ⭐⭐⭐⭐ | Most travellers · Best value |
| ✈️ Flight (Krabi or Phuket → Samui) | 1h flight + transfers | 2,500–6,000 THB | ⭐⭐⭐⭐⭐ | Speed · Comfort · Budget flexible |
| 🚌 Bus + Ferry (budget) | 7–9h | 400–650 THB | ⭐⭐⭐ | Backpackers · Tightest budget |
| 🚗 Private transfer + Ferry | 4–5h | 3,000–6,000 THB | ⭐⭐⭐⭐⭐ | Groups · Families · Comfort |
Koh Lanta Koh Samui — Understanding the Geography
Before choosing your route, understanding the geography makes everything clearer. The Koh Lanta Koh Samui journey is not a simple ferry crossing — it requires crossing the Thai peninsula from the Andaman Sea coast to the Gulf of Thailand coast, or vice versa.
Koh Lanta is located off the coast of Krabi Province on Thailand's Andaman Sea (west coast). Koh Samui is located in the Gulf of Thailand off Surat Thani Province (east coast). The straight-line distance between the two islands is approximately 350 km — but the actual travel route follows roads and ferry crossings that make the effective distance closer to 450–500 km depending on the route chosen.
Koh Lanta: Krabi Province · Andaman Sea · West coast Thailand
Koh Samui: Surat Thani Province · Gulf of Thailand · East coast Thailand
Distance: ~350 km straight line · ~450 km by road/ferry
Key hub: Surat Thani (mainland city connecting both sides)
Nearest airport to Koh Lanta: Krabi Airport (KBV) · 1h by ferry/bus
Option 1 — Ferry + Bus + Ferry Combo (Recommended)
The ferry + bus + ferry combination is the most popular and best-value way to travel the Koh Lanta Koh Samui route — and the one that 12Go Asia has packaged into a seamless single booking. The journey works like this:
Koh Lanta to Koh Samui direction:
- Ferry from Koh Lanta (Saladan Pier) to Krabi Town or Ao Nang — approximately 1.5–2h
- Bus or minivan from Krabi across the peninsula to Surat Thani — approximately 3–3.5h
- Ferry from Surat Thani (Donsak Pier) to Koh Samui (Nathon Pier) — approximately 1–1.5h
Total journey time: 5.5–7 hours door-to-pier, depending on connections and time of day.
Booking the Koh Lanta Koh Samui combo ticket via 12Go Asia combines all three legs (ferry + bus + ferry) into a single booking with one price, one QR code and guaranteed connections between each leg. Without a combo ticket, missed connections between the bus and the Surat Thani ferry are a real risk — particularly in high season when the last ferry to Koh Samui fills up. 12Go Asia guarantees the connection or rebooks you.
| Leg | From | To | Operator | Duration | Price |
|---|---|---|---|---|---|
| 1. Ferry | Koh Lanta (Saladan) | Krabi / Ao Nang | Various | 1.5–2h | 150–250 THB |
| 2. Bus/Minivan | Krabi | Surat Thani | Various | 3–3.5h | 200–300 THB |
| 3. Ferry | Donsak Pier | Nathon Pier (Samui) | Raja · Seatran · Lomprayah | 1–1.5h | 100–200 THB |
| Total (combo ticket) | 5.5–7h | 600–900 THB | |||
⛴️ Book Koh Lanta → Koh Samui Combo — 12Go Asia →
Option 2 — Fly from Krabi or Phuket to Koh Samui
For travellers who prioritise speed or comfort over cost, flying is the most efficient way to complete the Koh Lanta Koh Samui route. Koh Lanta is approximately 1 hour from Krabi Airport (KBV) by minivan and ferry, and both Krabi and Phuket airports have direct flights to Koh Samui Airport (USM) operated by Bangkok Airways.
| Route | Transfer to Airport | Flight | Total Time | Total Price |
|---|---|---|---|---|
| Koh Lanta → Krabi Airport (KBV) → Koh Samui (USM) | 1h | ~1h (via Bangkok) | 3–4h | 2,500–5,000 THB |
| Koh Lanta → Phuket Airport (HKT) → Koh Samui (USM) | 2–2.5h | ~1h direct | 3.5–4.5h | 3,000–6,000 THB |
Most flights from Krabi to Koh Samui connect through Bangkok (Suvarnabhumi) operated by Bangkok Airways — making the journey 3–4 hours total despite the short flight time. Direct Phuket to Koh Samui flights are available but less frequent. Always check actual routing before booking — a Bangkok connection adds 2+ hours to what looks like a short hop on the map.
Koh Samui to Koh Lanta — Reverse Route Guide
The Koh Samui to Koh Lanta route follows the same logic in reverse — and uses the same transport combination. The key departure point from Koh Samui is Nathon Pier on the west coast for the mainland ferry, connecting to a cross-peninsula bus and then the Koh Lanta ferry from Krabi or Ao Nang.
Koh Samui to Koh Lanta step by step:
- Ferry from Nathon Pier (Koh Samui) to Donsak Pier (Surat Thani mainland) — 1–1.5h · 100–200 THB
- Bus or minivan from Surat Thani to Krabi Town — 3–3.5h · 200–300 THB
- Ferry from Krabi or Ao Nang to Koh Lanta (Saladan Pier) — 1.5–2h · 150–250 THB
The first ferry from Nathon Pier departs at approximately 5:30am (Raja Ferry). To catch the last Koh Lanta ferry from Krabi, you need to be on the bus from Surat Thani by 10am at the latest. This means departing Koh Samui on the 5:30am or 7am ferry. Book everything via 12Go Asia to guarantee your connections — the timing is tight on this route.
⛴️ Book Koh Samui → Koh Lanta — 12Go Asia →
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Both directions · All operators · Combo tickets · Instant confirmation
Koh Lanta Koh Samui — How the Two Islands Compare
Many travellers on the koh lanta koh samui route are doing exactly what this guide is designed for — island hopping between Thailand's best Gulf and Andaman destinations. Understanding how the two islands differ helps set the right expectations for each leg of the journey:
| Koh Samui | Koh Lanta | |
|---|---|---|
| Sea | Gulf of Thailand | Andaman Sea |
| Best season | November–April | November–April |
| Size | 228 km² (large) | 151 km² (medium) |
| Development level | High | Low–Medium |
| Beach quality | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Nightlife | ⭐⭐⭐⭐⭐ | ⭐⭐ |
| Local atmosphere | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Snorkeling / Diving | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Budget travel | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Families | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Digital nomads | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Airport | ✅ Direct flights | ❌ Nearest: Krabi (1h) |
The ideal Thailand island-hopping itinerary combines both islands — spending 5–7 days on Koh Samui for the facilities, nightlife and island-hopping to Koh Phangan and Koh Tao, then making the Koh Lanta Koh Samui crossing to spend 5–7 days on Koh Lanta for the more laid-back Andaman atmosphere, better diving and the extraordinary Hat Khlong Nin and Hat Khlong Dao beaches. November through April gives perfect conditions at both destinations simultaneously.
Koh Lanta Koh Samui — What Awaits on Koh Lanta
If you are completing the koh lanta koh samui journey toward Koh Lanta for the first time, here is what awaits you on the other side:
Koh Lanta's beaches are consistently rated among Thailand's finest — Hat Khlong Dao on the north is the most developed, wide and family-friendly. Hat Khlong Nin in the centre is the most beautiful and photogenic. Hat Khlong Hin and Hat Khlong Jak in the south are the most secluded and undeveloped. All of them face the Andaman Sea directly west, delivering extraordinary sunsets that the Gulf-coast islands can never match.
The pace of life on Koh Lanta is dramatically slower than Koh Samui. There is no busy nightlife strip, no beach road of bars and clubs and no airport bringing mass tourism. The island's population is predominantly Muslim fishing families whose ancestors settled here centuries ago — their culture permeates the old town of Saladan and the fishing villages along the east coast road.
Koh Lanta's diving is some of the best in Thailand — Koh Ha, Hin Daeng and Hin Muang dive sites are accessible from the island and rank among Southeast Asia's top dive destinations. Manta rays, whale sharks (seasonal) and exceptional reef diversity make it a bucket-list destination for serious divers.
Koh Lanta Koh Samui — What Awaits on Koh Samui
For travellers completing the koh lanta koh samui crossing and arriving in Koh Samui, the contrast is immediate and striking. Koh Samui is dramatically more developed, more international and more infrastructure-rich than Koh Lanta. Here is what to know before arriving:
The ferry arrives at Nathon Pier on the west coast of Koh Samui. From Nathon, taxis to Chaweng cost 300–500 THB and take 30–35 minutes. Bophut on the north coast is 15–20 minutes and 200–300 THB. Download Grab before arriving — your Thailand eSIM activates immediately at the pier and Grab is 15–20% cheaper than negotiated taxis.
The best areas to stay after the Koh Lanta Koh Samui crossing depend on what you want from Koh Samui. Chaweng for maximum facilities and nightlife. Bophut for atmosphere and the Friday Night Market. Maenam for calm beach and budget accommodation. Lamai for the best value-to-quality ratio on the island.
Koh Lanta Koh Samui — Full Departure Schedules 2026
| Direction | Departure Time | Arrival | Notes |
|---|---|---|---|
| Koh Lanta → Koh Samui | 7:00am (Saladan Pier) | ~2pm (Nathon Pier) | Morning departure recommended |
| Koh Lanta → Koh Samui | 10:30am (Saladan Pier) | ~5:30pm (Nathon Pier) | Afternoon arrival — tight connection |
| Koh Samui → Koh Lanta | 5:30am (Nathon Pier) | ~12:30pm (Saladan) | Earliest option · Best connections |
| Koh Samui → Koh Lanta | 8:00am (Nathon Pier) | ~3:30pm (Saladan) | Most popular · Book ahead |
The koh lanta koh samui route is seasonal — Koh Lanta ferries operate from approximately November to May only. From June through October, the Andaman Sea monsoon makes the Koh Lanta ferry crossing unsafe and services are suspended. If planning this journey outside November–May, you must fly via Krabi or Phuket. Always check current schedules on 12Go Asia before booking.
Koh Lanta Koh Samui — Practical Tips
- Book the combo ticket via 12Go Asia — it is the single most important practical step for this journey. A combo ticket guarantees all connections and eliminates the risk of being stranded at Surat Thani bus station when the last Koh Samui ferry is sold out.
- Travel in the morning — both directions are best started early. The 7am departure from Koh Lanta reaches Koh Samui by early afternoon with time to reach your hotel before dark. The 5:30am departure from Nathon Pier gives you the most comfortable connection window to Koh Lanta.
- Bring snacks and water — the bus section across the peninsula (3–3.5h) has toilet stops but limited food options at quality local prices. Pack enough food and water for the full journey.
- Keep your luggage manageable — the Koh Lanta Koh Samui route involves multiple vehicle changes (ferry → bus → ferry). Large, heavy luggage makes each transfer significantly more stressful. If possible, travel with a backpack or soft bag rather than hard-shell suitcases.
- Charge your devices the night before — the bus section has limited charging options. A fully charged phone is essential for navigation and booking on arrival.
- Have your 12Go booking QR code downloaded offline — mobile signal can be weak on the bus section through inland Surat Thani Province. Download the QR code before departing so it is accessible without signal.
- Activate your eSIM before the journey — your Thailand eSIM keeps you connected for navigation, Grab booking on arrival and real-time schedule updates throughout the Koh Lanta Koh Samui crossing.
Koh Lanta Koh Samui — Itinerary Ideas
Most travellers making the koh lanta koh samui crossing are building a broader Thailand itinerary. Here are three proven routes that include both islands optimally:
The Classic Gulf + Andaman Circuit (14 days)
| Days | Destination | Transport |
|---|---|---|
| Day 1–2 | Bangkok (arrival) | International flight |
| Day 3–7 | Koh Samui | Flight Bangkok → USM |
| Day 8 | Koh Phangan (day trip) | Lomprayah ferry (30 min) |
| Day 9 | Transit day (Koh Samui → Koh Lanta) | Combo ticket via 12Go |
| Day 10–13 | Koh Lanta | — |
| Day 14 | Fly home | Krabi → Bangkok → International |
The Island Hopper (21 days)
| Days | Destination | Transport |
|---|---|---|
| Day 1–5 | Koh Samui | Fly in |
| Day 6–8 | Koh Phangan | Lomprayah (30 min) |
| Day 9–11 | Koh Tao | Lomprayah (1.5h) |
| Day 12 | Transit Koh Samui → Koh Lanta | 12Go combo (6h) |
| Day 13–17 | Koh Lanta | — |
| Day 18–20 | Krabi / Railay Beach | Ferry (1.5h) |
| Day 21 | Fly home from Krabi | KBV → International |
Always place the koh lanta koh samui crossing on a dedicated transit day — don't try to squeeze activities in before or after the 6-hour journey. Leave Koh Lanta rested, arrive at Koh Samui with time to settle, or vice versa. The crossing itself is scenic and interesting but not comfortable enough to be treated as part of a sightseeing day.
Koh Lanta Koh Samui — Accommodation on Both Islands
If you are planning the koh lanta koh samui route as part of a longer trip, here is how to think about accommodation on both ends:
On Koh Samui: Bophut and Maenam on the north coast are the most convenient bases for travellers making the Koh Lanta crossing — closest to Bangrak and Maenam Piers for island-hopping ferries, and closest to the Nathon Pier departure for the Koh Lanta route. The airport is also 10–15 minutes from these areas.
On Koh Lanta: Hat Khlong Dao (Long Beach) is the best base for first-time visitors — the widest beach, most facilities and the most complete range of accommodation from budget bungalows to mid-range resorts. Hat Khlong Nin is better for longer stays — more local, more beautiful and significantly quieter.
| Budget | Koh Samui | Koh Lanta |
|---|---|---|
| 💰 Budget ($20–40) | Harry's Bungalows (Maenam) | Lanta Castaway Beach Resort |
| ✅ Mid-range ($50–120) | Bophut Resort & Spa | Lanta Pavilion Resort |
| 🏆 Luxury ($150+) | Anantara Bophut | Pimalai Resort & Spa |
🏨 Find Hotels in Koh Samui — Agoda →
Koh Lanta Koh Samui — What to Do at Each Stop
If your koh lanta koh samui itinerary gives you 5–7 days on each island, here are the essential experiences not to miss:
Must-Do on Koh Samui (before or after Koh Lanta)
- Ang Thong Marine Park — the 42-island day trip that is Koh Samui's standout experience. Book via Klook or GetYourGuide 24h ahead.
- Bophut Friday Night Market — the best night market on the island. Every Friday 5–10pm in Fisherman's Village.
- Big Buddha Temple — free, 20 minutes from most hotels, extraordinary dawn light.
- Koh Phangan day trip — 30 minutes by Lomprayah, full day on a beautiful island.
- Na Muang Waterfall — free, south coast, best after rain.
Must-Do on Koh Lanta (after the koh lanta koh samui crossing)
- Hat Khlong Nin sunset — the finest beach sunset in Thailand. Every evening, west-facing, extraordinary.
- Koh Ha snorkeling — the five underwater caves accessible only from Koh Lanta, world-class snorkeling.
- Old Town Saladan — the original Sino-Portuguese shophouse settlement, fishing culture, excellent seafood.
- Koh Lanta National Park — mangrove forest, lighthouse, wildlife. South end of the island.
- Sunset yoga — Koh Lanta has one of Thailand's most developed wellness scenes. Several beachfront studios operate sunset sessions.
Koh Lanta Koh Samui — Budget Breakdown
| Item | Budget Option | Mid-Range | Premium |
|---|---|---|---|
| Transport (full crossing) | 600–700 THB (combo) | 900 THB (combo + comfort) | 3,000–6,000 THB (flight) |
| Accommodation/night Koh Samui | $20–40 | $60–120 | $200–500 |
| Accommodation/night Koh Lanta | $15–35 | $50–100 | $150–400 |
| Food/day (both islands) | $8–12 (local) | $15–25 (mix) | $30–60 (restaurants) |
| Activities/day (average) | $5–10 | $15–30 | $50–100 |
Koh Lanta Koh Samui — Frequently Asked Questions
How long does it take to travel from Koh Lanta to Koh Samui?
The Koh Lanta to Koh Samui journey takes approximately 5.5–7 hours by the recommended ferry + bus + ferry combination. The flying option (Koh Lanta to Krabi Airport, then fly to Koh Samui) takes 3–4 hours total but costs significantly more. Book the combo ferry/bus ticket via 12Go Asia for the most reliable timing and guaranteed connections on the ferry + bus route.
Is there a direct ferry on the koh lanta koh samui route?
No — there is no direct ferry between Koh Lanta and Koh Samui. The two islands are on opposite coasts of the Thai peninsula (Andaman Sea and Gulf of Thailand respectively). All routes require crossing the peninsula by bus or minivan, connecting to a ferry at either end. The most efficient combination is the ferry + bus + ferry combo ticket available on 12Go Asia.
How much does it cost to travel from Koh Lanta to Koh Samui?
The Koh Lanta to Koh Samui journey costs approximately 600–900 THB ($17–26) by the ferry + bus + ferry combination — one of the best-value inter-island journeys in Southeast Asia given the distance covered. Flying costs 2,500–6,000 THB ($70–170) depending on departure airport and advance booking. A private transfer costs 3,000–6,000 THB for the full journey.
Can I travel from Koh Samui to Koh Lanta in one day?
Yes — the Koh Samui to Koh Lanta journey is achievable in one day if you take the early morning ferry from Nathon Pier (5:30am or 8am). The 5:30am departure arrives at Koh Lanta by approximately 12:30pm, giving you the entire afternoon on the island. The 8am departure arrives by approximately 3:30pm. Both options allow a same-day arrival — book via 12Go Asia to guarantee the connections.
What is the best time of year to travel from Koh Lanta to Koh Samui?
The best time for the Koh Lanta Koh Samui journey is November through April — when both islands are simultaneously in their dry seasons. This window gives you perfect conditions at both ends of the journey. November to December is particularly special: Koh Samui's dry season is just beginning while Koh Lanta is in peak condition. The route is not recommended May through October due to Koh Lanta ferry suspension during monsoon season.
Do I need to book the Koh Lanta Koh Samui route in advance?
Yes — particularly for December through February travel when both islands are at peak season and all transport options fill up quickly. Book at least 48–72 hours ahead via 12Go Asia in high season. The Koh Samui ferry section (Donsak to Nathon) is the most likely to sell out — the Raja Ferry and Seatran Ferry both fill completely on peak days. Last-minute booking is possible in shoulder season (March–May) but never recommended.
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Some links are affiliate links. InsideSamui.com earns a commission via 12Go Asia at no extra cost to you. Transport schedules are indicative for 2026 — always verify current timetables on 12Go Asia before booking. Updated 2026.