To go to Koh Phangan, Thailand, you can fly into either Koh Samui Airport or Chumphon Airport and then take a ferry to Koh Phangan. The ferry ride from Koh Samui takes about 30 minutes, while the ferry ride from Chumphon takes about 2-3 hours.

Here are 20 things to do on Koh Phangan:
- Attend the Full Moon Party at Haad Rin Beach
- Visit the Wat Khao Tham temple and the Wat Khao Tam cave temple
- Go snorkeling or diving at Shark Island or Sail Rock
- Relax on the beautiful beaches, such as Haad Salad, Haad Yuan, and Haad Chao Phao
- Visit the Bottle Beach and the Secret Beach
- Go trekking to the Than Sadet Waterfall
- Take a cooking class and learn how to make traditional Thai food
- Go elephant trekking
- Visit the Phaeng Waterfall and the Phaeng Noi Waterfall
- Go kayaking or stand-up paddleboarding
- Visit the Thongsala Pier and the Thongsala Walking Street market
- Take a boat tour to the nearby islands, such as Koh Tao and Koh Samui
- Visit the Mae Haad Pier and the Mae Haad Walking Street market
- Go rock climbing at the Bottle Beach cliffs
- Visit the Chinese Temple and the Koh Phangan Museum
- Go horseback riding through the jungle
- Visit the Than Prawet Temple and the Wat Phu Khao Noi temple
- Take a yoga class or go to a yoga retreat
- Visit the Koh Phangan Cultural Center
- Go on a boat trip to see the bioluminescent plankton at Haad Rin Nai Beach at night.