Complete guide to bus travel from Bangkok to Chumphon — schedules, prices, operators and booking tips.
Chumphon is the main jumping-off point for Koh Tao — the world's most popular destination for beginner scuba diving certifications — and the starting point for the journey to the Gulf of Thailand islands.
Chumphon is a coastal city at the top of Thailand's southern peninsula and the primary gateway to Koh Tao. While the city itself is primarily a transit point, it has pleasant beaches and a relaxed local atmosphere.
The journey from Bangkok's Sai Tai Mai terminal takes 7 to 8 hours. Multiple departures run throughout the day, including overnight services. From Chumphon, high-speed ferries and overnight boats connect to Koh Tao (2–3 hours by speedboat, 6 hours by overnight ferry).
Koh Tao is famous worldwide as the most affordable place to obtain a PADI Open Water diving certification — the combination of clear water, abundant marine life and competitive prices draws thousands of divers annually.
The following operators run regular services on the Bangkok–Chumphon route:
Compare prices across all operators before booking — fares can vary significantly by class and season.
Departures: Multiple daily including overnight
From: Sai Tai Mai (Southern Bus Terminal), Bangkok
To: Chumphon Bus Terminal
Schedules may vary by operator and season. Confirm departure times when booking, particularly during Thai public holidays.
✅ Chumphon is the gateway to Koh Tao — the world's most popular dive certification destination.
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Book 1–2 days ahead on weekdays. During Songkran (April), New Year and long weekends, book at least one week in advance — buses sell out fast on popular routes.