EUR/IE
Find cheap flights to Ko Samui in 2026/2027 from €648 This is the cheapest return flight found to Ko Samui from Ireland on FlightsFinder on April 28th 2026 at 16:27. This offer may no longer be available. Click the offer to check live prices & dates of travel.
Our Flight Finder compares the cheapest flights to Ko Samui from the most established flight comparison sites.
Fly to Ko Samui and visit sites like Chaweng Beach, Lamai Beach, Maenam Beach & Bo Phut Beach.
1. Enter your search requirements for Ko Samui
2. Compare the best Ko Samui deals from top comparison engines
3. Book your Ko Samui flight at the cheapest price
These economy flights were found on FlightsFinder from Ireland to Ko Samui in the last few days. Prices subject to availability.
These economy flights were found on FlightsFinder from Ireland to Ko Samui in the last few days. Prices subject to availability.
According to our data, May is on average the cheapest time to book flights to Ko Samui.
You can get flights from €648 return.
According to our data, July is on average the most expensive time to book flights to Ko Samui.
A return flight could set you back more than €858.
Ko Samui, an idyllic island paradise nestled in the Gulf of Thailand, captures the hearts of visitors with its pristine white sandy beaches, crystal-clear turquoise waters, and lush tropical landscapes. This enchanting destination offers a perfect blend of serenity and vibrant energy, making it a haven for relaxation and adventure seekers alike. Explore picturesque fishing villages, indulge in sumptuous local cuisine, or snorkel in the vibrant coral reefs teeming with marine life. Whether you seek tranquillity under swaying palm trees or excitement in bustling markets, Ko Samui promises an unforgettable journey of discovery and relaxation.
A good price for a flight to Koh Samui is €583 - €713.
The popular airports near Ko Samui include Samui International Airport (USM), Surat Thani Airport (URT), and Nakhon Si Thammarat Airport (NST).
The flight to Ko Samui (USM) is roughly 14 hours 36 minutes and 6,345 miles (10,212 kilometres) from Dublin, Ireland - Dublin International Airport (DUB).
The best way is to compare flights to Ko Samui from leading comparison sites using our search engine dashboard.
We have currently found no direct flights to Ko Samui.
Here is the average weather forecast in Ko Samui by month:
• Jan: 29°C
• Feb: 29°C
• Mar: 31°C
• Apr: 32°C
• May: 33°C
• Jun: 33°C
• Jul: 32°C
• Aug: 32°C
• Sep: 32°C
• Oct: 31°C
• Nov: 30°C
• Dec: 29°C
The Ko Samui Airport is located approximately 2 km from the city centre.
Typically, flights are cheapest to Ko Samui 2 months before departure.
Studies show flights to Ko Samui are typically cheaper on Tuesdays and Wednesdays.
28.7 °C
Tue, 28 Apr 2026
Average Temperature
29°C
Jan
29°C
Feb
31°C
Mar
32°C
Apr
33°C
May
33°C
Jun
32°C
Jul
32°C
Aug
32°C
Sep
31°C
Oct
30°C
Nov
29°C
Dec
Dublin, Ireland - Dublin International Airport (DUB) to Ko Samui (USM)
Distance:
6,345 miles (10,212 kilometres)
Average flight time (direct 14 hours 36 minutes)
Shannon, Ireland - Shannon International Airport (SNN) to Ko Samui (USM)
Distance:
6,466 miles (10,406 kilometres)
Average flight time (direct 14 hours 52 minutes)
Knock, Ireland - Ireland West Airport (NOC) to Ko Samui (USM)
Distance:
6,432 miles (10,351 kilometres)
Average flight time (direct 14 hours 47 minutes)
Cork, Ireland - Cork International Airport (ORK) to Ko Samui (USM)
Distance:
6,470 miles (10,412 kilometres)
Average flight time (direct 14 hours 52 minutes)
Kerry, Ireland - Kerry Airport (KIR) to Ko Samui (USM)
Distance:
6,502 miles (10,465 kilometres)
Average flight time (direct 14 hours 56 minutes)
Donegal, Ireland - Donegal Airport (CFN) to Ko Samui (USM)
Distance:
6,386 miles (10,278 kilometres)
Average flight time (direct 14 hours 41 minutes)
Waterford, Ireland - Waterford Airport (WAT) to Ko Samui (USM)
Distance:
6,405 miles (10,309 kilometres)
Average flight time (direct 14 hours 44 minutes)
From Dublin (DUB), Ireland to Koh Samui, Thailand (USM): €648
Depart: 12 May 2026 · Return: 15 May 2026 Price found 28 Apr 2026, 16:27
From Cork (ORK), Ireland to Koh Samui, Thailand (USM): €850
Depart: 17 Sep 2026 · Return: 29 Oct 2026 Price found 20 Apr 2026, 13:25
From Shannon (SNN), Ireland to Koh Samui, Thailand (USM): €1,073
Depart: 05 Sep 2026 · Return: 19 Sep 2026 Price found 25 Apr 2026, 12:34
From Knock (NOC), Ireland to Koh Samui, Thailand (USM): €1,080
Depart: 23 Oct 2026 · Return: 07 Nov 2026 Price found 26 Apr 2026, 10:29
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