Trip Ideas

18 days in Thailand: itinerary

A realistic 18-day route through Thailand with sensible stop lengths, travel days and costs.

6 min read · Updated 2026-08-01

City, mountains, then west-coast islands.

The route

It keeps transfers short and ends near a major airport. Domestic flights link Bangkok with the north and the southern islands quickly

At mid-range pace, an estimated $1,656 per person on the ground, excluding flights.

Best months: November, December, January, February.

Cities, northern mountains and two very different coasts

Bangkok

Markets, temples, rooftops and the country's transport hub.

Chiang Mai

Old-city temples, northern mountains and a slower pace.

Phuket

Andaman coast: the largest island, with resorts, nightlife and direct flights.

Krabi

Andaman limestone cliffs, longtail boats and climbing.

Compare every destination against your own budget, dates and travel style.