Flights to Koh Samui from Dublin

View ฿24,645 flight on Thu, 4 Sep 2025Opens in a new window

Popular airlines from Dublin to Koh Samui

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Dublin (DUB) to Koh Samui (USM)

Prices were available within the past 7 days and start at ฿24,645 for one-way flights and ฿34,890 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Fri, 30 Jan - Fri, 13 Feb
DUB
Dublin
USM
Koh Samui
฿34,890 Return, found 2 days ago
฿34,890
Return
found 2 days ago
Select Lufthansa flight, departing Fri, 30 Jan from Dublin to Koh Samui, returning Fri, 13 Feb, priced at ฿34,890 found 2 days ago
Lufthansa
Fri, 30 Jan - Fri, 13 Feb
DUB
Dublin
USM
Koh Samui
฿37,115 Return, found 2 days ago
฿37,115
Return
found 2 days ago
Select Lufthansa flight, departing Fri, 30 Jan from Dublin to Koh Samui, returning Fri, 13 Feb, priced at ฿37,115 found 2 days ago
Aer Lingus
Thu, 1 Jan - Sat, 24 Jan
DUB
Dublin
USM
Koh Samui
฿38,955 Return, found 4 days ago
฿38,955
Return
found 4 days ago
Select Aer Lingus flight, departing Thu, 1 Jan from Dublin to Koh Samui, returning Sat, 24 Jan, priced at ฿38,955 found 4 days ago
Swiss International Air Lines
Fri, 30 Jan - Fri, 13 Feb
DUB
Dublin
USM
Koh Samui
฿40,465 Return, found 2 days ago
฿40,465
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Fri, 30 Jan from Dublin to Koh Samui, returning Fri, 13 Feb, priced at ฿40,465 found 2 days ago
British Airways
Fri, 30 Jan - Fri, 13 Feb
DUB
Dublin
USM
Koh Samui
฿41,365 Return, found 2 days ago
฿41,365
Return
found 2 days ago
Select British Airways flight, departing Fri, 30 Jan from Dublin to Koh Samui, returning Fri, 13 Feb, priced at ฿41,365 found 2 days ago
KLM
Fri, 30 Jan - Fri, 13 Feb
DUB
Dublin
USM
Koh Samui
฿41,540 Return, found 2 days ago
฿41,540
Return
found 2 days ago
Select KLM flight, departing Fri, 30 Jan from Dublin to Koh Samui, returning Fri, 13 Feb, priced at ฿41,540 found 2 days ago
*Available to Expedia members.