Flights to Ko Samui

€674 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 21/4. 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
10:50 - 07:45
DUB
-
USM
38h 55m
3 stops
Multiple Airlines Logo
07:50 - 20:45
USM
-
DUB
42h 55m
3 stops
€674Multiple Airlines
Tue, 21 Apr - Tue, 12 May
Multiple Airlines Logo
14:20 - 07:45
DUB
-
USM
35h 25m
3 stops
Multiple Airlines Logo
06:00 - 23:25
USM
-
DUB
47h 25m
3 stops
€693Multiple Airlines
Thu, 23 Apr - Wed, 6 May
Multiple Airlines Logo
20:35 - 21:35
DUB
-
USM
19h 00m
2 stops
Multiple Airlines Logo
07:50 - 19:50
USM
-
DUB
42h 00m
3 stops
€703Multiple Airlines
Mon, 27 Apr - Mon, 11 May
Multiple Airlines Logo
10:50 - 07:45
DUB
-
USM
38h 55m
3 stops
Multiple Airlines Logo
06:00 - 19:05
USM
-
DUB
19h 05m
2 stops
€734Multiple Airlines
Tue, 21 Apr - Tue, 12 May
Etihad Airways Logo
09:00 - 10:45
DUB
-
USM
19h 45m
2 stops
Etihad Airways Logo
06:00 - 19:05
USM
-
DUB
19h 05m
2 stops
€739Etihad Airways
Mon, 27 Apr - Mon, 11 May
Multiple Airlines Logo
09:00 - 10:45
DUB
-
USM
19h 45m
2 stops
Multiple Airlines Logo
07:50 - 07:15
USM
-
DUB
29h 25m
2 stops
€748Multiple Airlines
Tue, 21 Apr - Tue, 12 May
Etihad Airways Logo
09:00 - 11:05
DUB
-
USM
20h 05m
2 stops
Etihad Airways Logo
11:25 - 07:15
USM
-
DUB
25h 50m
2 stops
€763Etihad Airways
Thu, 23 Apr - Wed, 6 May
British Airways Logo
11:25 - 21:10
ORK
-
USM
27h 45m
2 stops
British Airways Logo
13:30 - 23:50
USM
-
ORK
40h 20m
2 stops
€1,127British Airways
Wed, 10 Jun - Sun, 14 Jun
British Airways Logo
16:10 - 21:10
ORK
-
USM
23h 00m
2 stops
British Airways Logo
16:25 - 23:50
USM
-
ORK
37h 25m
2 stops
€1,129British Airways
Wed, 10 Jun - Sun, 14 Jun
Air France Logo
15:40 - 10:35
ORK
-
USM
35h 55m
2 stops
Air France Logo
11:40 - 14:45
USM
-
ORK
34h 05m
2 stops
€2,134Air France
Sun, 22 Mar - Thu, 26 Mar

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 6 March 2026.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Tue 21/4

10:50-07:45

3 stops38h 55m

Ko Samui

Tue 12/5

07:50-20:45

3 stops42h 55m

€674

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Thu 23/4

14:20-07:45

3 stops35h 25m

Ko Samui

Wed 6/5

06:00-23:25

3 stops47h 25m

€693

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Mon 27/4

20:35-21:35

2 stops19h 00m

Ko Samui

Mon 11/5

07:50-19:50

3 stops42h 00m

€703

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Tue 21/4

10:50-07:45

3 stops38h 55m

Ko Samui

Tue 12/5

06:00-19:05

2 stops19h 05m

€734
Fastest return journey

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Mon 27/4

09:00-10:45

2 stops19h 45m

Ko Samui

Mon 11/5

06:00-19:05

2 stops19h 05m

€739

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Tue 21/4

09:00-10:45

2 stops19h 45m

Ko Samui

Tue 12/5

07:50-07:15

2 stops29h 25m

€748

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Thu 23/4

09:00-11:05

2 stops20h 05m

Ko Samui

Wed 6/5

11:25-07:15

2 stops25h 50m

€763

CorkKo Samui

ORK - USM

ORKUSM

Cork

Wed 10/6

11:25-21:10

2 stops27h 45m

Ko Samui

Sun 14/6

13:30-23:50

2 stops40h 20m

€1,127

CorkKo Samui

ORK - USM

ORKUSM

Cork

Wed 10/6

16:10-21:10

2 stops23h 00m

Ko Samui

Sun 14/6

16:25-23:50

2 stops37h 25m

€1,129

CorkKo Samui

ORK - USM

ORKUSM

Cork

Sun 22/3

15:40-10:35

2 stops35h 55m

Ko Samui

Thu 26/3

11:40-14:45

2 stops34h 05m

€2,134

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 €854.

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 €578. Flights from Ireland to Ko Samui on a Sunday will generally be more expensive and average around €744. 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 €537. In contrast, the most expensive time of day to depart to Ko Samui is at midday when prices are around €605.

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 DUBLINApril26% cheaperFlying from Dublin to Ko Samui costs on average just €821 in April
MOST EXPENSIVE MONTH TO FLY TO KO SAMUI FROM DUBLINDecember70% more expensiveIt costs about €1,872 for flights to Ko Samui from Dublin in December
MOST POPULAR MONTH TO FLY TO KO SAMUI FROM DUBLINFebruary100% more users visitedMore momondo users searched in flights to Ko Samui from Dublin in February 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

€674

Fastest flight time

27h 45m

Popular in

December
The best round-trip flight price to Ko Samui from Ireland in the last 72 hours is €674 (Dublin to Ko Samui).
The fastest flight to Ko Samui from Ireland takes 27h 45m (Cork to Ko Samui).
December has the highest demand for flights to Ko Samui, with a 16% 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.

Is there a cheaper alternative to flying into Ko Samui?

You can find deals at Surat Thani Airport for €86 on average, but that price can change based on your departure airport. To save money, try momondo’s Airport-to-Airport Pricing Tool.

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 Tao
Ko Pha Ngan

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
Sun 5/4
Sun 12/4

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