Flights Koh Samui — Chiang Rai is a popular route. The straight-line distance is 1 152 km. Flight time 1h 51m. Time difference +0h.
From Koh Samui (USM) flights depart from 1 airport: USM. To Chiang Rai (CEI) — 1 arrival airport: CEI.
1 airline operate on this route: Bangkok Airways.
The minimum price for the next 3 months — from $180 (11.12.2026). The cheapest dates are highlighted in the calendar above.
The average ticket price — $183, ranging from $180 to $186. Book 1–3 months in advance to get the best deals.
Cheapest day to fly — Sunday.