Day-by-Day Thailand travel plan: 21 Days Bangkok, Chiang Mai, Koh Samui, Koh Pha-Ngan, Koh Tao. Northern Culture, Gulf Islands, Nightlife.
Duration: 21 days.
Difficulty: Easy.
Budget Level: Budget to Mid-Range.
Best For: First-timers, Culture Seekers, Beach Lovers.
Highlights: Temples, Northern Culture, Gulf Islands, Nightlife.
Pace: Relaxed.
Total Cost Estimate: $2,500–4,000.
Perfect For
First-time visitors who want the classic Thailand experience: Bangkok's temples and street food, Chiang Mai's laid-back northern culture, and the Gulf islands (Koh Samui, Koh Pha-Ngan, Koh Tao) for beaches and diving. Ends with a taste of Bangkok's nightlife before flying home.