What is the cheapest month to fly from Koh Samui to Chiang Rai?

Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Koh Samui (USM) to Chiang Rai (CEI), with fares starting from $168.

What is the lowest current fare from USM to CEI?

The lowest currently-listed fare from Koh Samui (USM) to Chiang Rai (CEI) is $168 on 2026-10-05.

Is there a direct flight from Koh Samui to Chiang Rai?

There is currently no non-stop service from USM to CEI. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Koh Samui to Chiang Rai

Cheapest current fares: $168 in October 2026 on connecting flights.

Last updated August 11, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Koh Samui (USM) to Chiang Rai (CEI). Refreshed daily.

Koh Samui (USM) → Chiang Rai (CEI)

October 2026 $168
September 2026 $229

Frequently asked questions

What is the cheapest month to fly from Koh Samui to Chiang Rai?

Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Koh Samui (USM) to Chiang Rai (CEI), with fares starting from $168.
What is the lowest current fare from USM to CEI?

The lowest currently-listed fare from Koh Samui (USM) to Chiang Rai (CEI) is $168 on 2026-10-05.
Is there a direct flight from Koh Samui to Chiang Rai?

There is currently no non-stop service from USM to CEI. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.