Flights to Ko Samui

€738 Cheap flights to Ko Samui

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight to Ko Samui departing on 22/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Ireland to Ko Samui

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:30 - 08:00
DUB
-
USM
42h 30m3 stops
Multiple Airlines Logo
19:00 - 20:55
USM
-
DUB
32h 55m3 stops
€738Multiple Airlines
Sun, 22 Feb - Mon, 9 Mar
KLM Logo
13:25 - 14:45
DUB
-
USM
19h 20m2 stops
KLM Logo
08:45 - 22:25
USM
-
DUB
19h 40m2 stops
€758KLM
Wed, 3 Jun - Sat, 20 Jun
KLM Logo
13:25 - 13:45
DUB
-
USM
18h 20m2 stops
KLM Logo
08:45 - 22:25
USM
-
DUB
19h 40m2 stops
€759KLM
Wed, 3 Jun - Sat, 20 Jun
Multiple Airlines Logo
06:25 - 19:45
DUB
-
USM
30h 20m3 stops
Multiple Airlines Logo
18:15 - 17:15
USM
-
DUB
30h 00m3 stops
€782Multiple Airlines
Tue, 10 Feb - Tue, 17 Feb
Multiple Airlines Logo
08:10 - 20:35
DUB
-
USM
29h 25m2 stops
Multiple Airlines Logo
08:50 - 18:15
USM
-
DUB
40h 25m2 stops
€792Multiple Airlines
Mon, 26 Jan - Mon, 9 Feb
Etihad Airways Logo
19:50 - 07:10
DUB
-
USM
28h 20m2 stops
Etihad Airways Logo
19:00 - 06:25
USM
-
DUB
42h 25m2 stops
€804Etihad Airways
Fri, 13 Mar - Tue, 17 Mar
Multiple Airlines Logo
19:50 - 21:20
DUB
-
USM
18h 30m2 stops
Multiple Airlines Logo
08:50 - 18:15
USM
-
DUB
40h 25m2 stops
€807Multiple Airlines
Sun, 22 Feb - Mon, 9 Mar
Air France Logo
16:45 - 13:05
DUB
-
USM
37h 20m2 stops
Air France Logo
11:40 - 08:00
USM
-
DUB
27h 20m2 stops
€811Air France
Sun, 25 Jan - Sun, 1 Feb
Qatar Airways Logo
11:55 - 19:35
ORK
-
USM
24h 40m3 stops
Qatar Airways Logo
21:20 - 15:25
USM
-
ORK
25h 05m3 stops
€1,456Qatar Airways
Mon, 12 Jan - Fri, 16 Jan
Qatar Airways Logo
11:55 - 18:15
ORK
-
USM
23h 20m3 stops
Qatar Airways Logo
17:40 - 11:10
USM
-
ORK
24h 30m3 stops
€1,543Qatar Airways
Sat, 10 Jan - Sat, 17 Jan

momondo Fare Finder

 
Locate flights to Ko Samui that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 13,528 searches and data was last updated on 28 December 2025.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

Route

Depart

Return

Price

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Sun 22/2

06:30-08:00

3 stops42h 30m

Ko Samui

Mon 9/3

19:00-20:55

3 stops32h 55m

€738

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Wed 3/6

13:25-14:45

2 stops19h 20m

Ko Samui

Sat 20/6

08:45-22:25

2 stops19h 40m

€758

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Wed 3/6

13:25-13:45

2 stops18h 20m

Ko Samui

Sat 20/6

08:45-22:25

2 stops19h 40m

€759

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Tue 10/2

06:25-19:45

3 stops30h 20m

Ko Samui

Tue 17/2

18:15-17:15

3 stops30h 00m

€782

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Mon 26/1

08:10-20:35

2 stops29h 25m

Ko Samui

Mon 9/2

08:50-18:15

2 stops40h 25m

€792

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Fri 13/3

19:50-07:10

2 stops28h 20m

Ko Samui

Tue 17/3

19:00-06:25

2 stops42h 25m

€804

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Sun 22/2

19:50-21:20

2 stops18h 30m

Ko Samui

Mon 9/3

08:50-18:15

2 stops40h 25m

€807

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Sun 25/1

16:45-13:05

2 stops37h 20m

Ko Samui

Sun 1/2

11:40-08:00

2 stops27h 20m

€811

CorkKo Samui

ORK - USM

ORKUSM

Cork

Mon 12/1

11:55-19:35

3 stops24h 40m

Ko Samui

Fri 16/1

21:20-15:25

3 stops25h 05m

€1,456

CorkKo Samui

ORK - USM

ORKUSM

Cork

Sat 10/1

11:55-18:15

3 stops23h 20m

Ko Samui

Sat 17/1

17:40-11:10

3 stops24h 30m

€1,543

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Ko Samui from

Ko Samui flights insights and trends

Explore insights for your Ko Samui flight to craft the best travel plan

What is the cheapest month to fly to Ko Samui?

If you aren’t able to travel during the month of April, then book flights to Ko Samui from Ireland during September instead. Flights to Ko Samui in September, while not as cheap as those in April, still average around €842.

What is the cheapest day to depart on your flight to Ko Samui?

The cheapest day to depart from Ireland to Ko Samui is on a Thursday when prices can be found for as low as €570. Flights from Ireland to Ko Samui on a Sunday will generally be more expensive and average around €733. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest Ireland to Ko Samui flights are usually those with departure times in the afternoon. Our users have found flights to Ko Samui in the afternoon for as low as €529. In contrast, the most expensive time of day to depart to Ko Samui is at midday when prices are around €596.

Cheapest flights to Ko Samui

Find the cheapest flights to Ko Samui from your nearest city or airport
CHEAPEST MONTH TO FLY TO KO SAMUI FROM DUBLINApril24% cheaperFlying from Dublin to Ko Samui costs on average just €809 in April
MOST EXPENSIVE MONTH TO FLY TO KO SAMUI FROM DUBLINDecember64% more expensiveIt costs about €1,749 for flights to Ko Samui from Dublin in December
MOST POPULAR MONTH TO FLY TO KO SAMUI FROM DUBLINJuly350% more users visitedMore momondo users searched in flights to Ko Samui from Dublin in July than any other month

Cheap Ko Samui flight deals and tips

Summary info about Ko Samui flight prices, duration and airlines

Best Round-Trip Price

€738

Fastest flight time

42h 30m

Popular in

December
The best round-trip flight price to Ko Samui from Ireland in the last 72 hours is €738 (Dublin to Ko Samui).
The fastest flight to Ko Samui from Ireland takes 42h 30m (Dublin to Ko Samui).
December has the highest demand for flights to Ko Samui, with a 15% price increase on average.

Frequently asked questions about flying to Ko Samui

What is there to do in Ko Samui when it’s raining?

When planning your flight to Ko Samui, it is important to be aware that some months are not as ideal as others. Specifically, the months of January, May, or October could carry a higher chance of rain, as Ko Samui sees up to 5.1 inches (130 mm) or more. There are still things to do in Ko Samui even when it's raining, but be aware that rain is highly probable in the area. Shopping centres like Fishermans Village are very popular destinations for those visiting the Ko Samui area. Fishermans Village is a great place to go if you’re looking to spend some time inside.

When is the best time to plan a beach trip to Ko Samui?

Beaches like Chaweng Beach are most often visited during February, March, or April, as the weather is usually above 70 degrees Fahrenheit (21°C) with a low chance of rain. For those looking to visit another beach nearby, Bophut Beach is a great option in the Ko Samui area.

Is there an alternative airport near Ko Samui?

Surat Thani Airport, Nakhon Si Thammarat Airport or Chumphon Airport can be an alternative airport used for travel to Ko Samui.

When did momondo last update prices for flights to Ko Samui Airport?

Prices for flights to Ko Samui Airport are refreshed on a daily basis.

How many operators does momondo search for flights to Ko Samui Airport?

How old do you have to be to fly to Ko Samui Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel to Ko Samui Airport.

What documentation or ID do you need to fly to Ko Samui Airport?

The necessary travel and health documents for your Ko Samui Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Pha Ngan
Ko Tao

Why use momondo?

Why should I use momondo to find a flight deal to Ko Samui?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights to Ko Samui. Millions of users trust and use momondo every year so you are in good company.

Can I find flights to Ko Samui with flexible booking policies on momondo?

All flight searches to Ko Samui on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights to Ko Samui?

Once all potential Ko Samui flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.

I’m not ready to book a flight to Ko Samui right now. Can momondo alert me if prices change?

Price alerts on flights to Ko Samui are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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1 adult
Tue 27/1
Tue 3/2

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Popular routes according to searches in the past day on momondo