What is the cheapest month to fly from Dublin to Koh Samui?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Dublin (DUB) to Koh Samui (USM), with fares starting from $566.

What is the lowest current fare from DUB to USM?

The lowest currently-listed fare from Dublin (DUB) to Koh Samui (USM) is $566 on 2026-08-10.

Is there a direct flight from Dublin to Koh Samui?

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

Cheap flights from Dublin to Koh Samui

Cheapest current fares: $566 in August 2026 on connecting flights.

Last updated August 9, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Dublin (DUB) to Koh Samui (USM). Refreshed daily.

Dublin (DUB) → Koh Samui (USM)

August 2026 $566

Frequently asked questions

What is the cheapest month to fly from Dublin to Koh Samui?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Dublin (DUB) to Koh Samui (USM), with fares starting from $566.
What is the lowest current fare from DUB to USM?

The lowest currently-listed fare from Dublin (DUB) to Koh Samui (USM) is $566 on 2026-08-10.
Is there a direct flight from Dublin to Koh Samui?

There is currently no non-stop service from DUB to USM. 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.