Flights to Ko Samui

€803 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 3/6. 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.
Qatar Airways Logo
15:00 - 11:55
DUB
-
USM
38h 55m
2 stops
Qatar Airways Logo
15:25 - 13:30
USM
-
DUB
28h 05m
2 stops
€803Qatar Airways
Wed, 3 Jun - Sat, 20 Jun
KLM Logo
13:25 - 16:35
DUB
-
USM
21h 10m
2 stops
KLM Logo
07:50 - 22:25
USM
-
DUB
20h 35m
2 stops
€805KLM
Wed, 3 Jun - Sat, 20 Jun
KLM Logo
13:25 - 16:50
DUB
-
USM
21h 25m
2 stops
KLM Logo
09:15 - 22:25
USM
-
DUB
19h 10m
2 stops
€808KLM
Wed, 3 Jun - Sat, 20 Jun
Multiple Airlines Logo
17:50 - 08:00
DUB
-
USM
31h 10m
2 stops
Multiple Airlines Logo
08:15 - 09:50
USM
-
DUB
32h 35m
3 stops
€845Multiple Airlines
Fri, 13 Mar - Sat, 21 Mar
Multiple Airlines Logo
21:20 - 08:25
DUB
-
USM
28h 05m
2 stops
Multiple Airlines Logo
20:20 - 06:00
USM
-
DUB
40h 40m
2 stops
€852Multiple Airlines
Thu, 5 Mar - Wed, 18 Mar
Multiple Airlines Logo
09:00 - 11:05
DUB
-
USM
20h 05m
2 stops
Multiple Airlines Logo
06:00 - 07:15
USM
-
DUB
31h 15m
2 stops
€855Multiple Airlines
Thu, 9 Apr - Sun, 3 May
Multiple Airlines Logo
17:50 - 08:00
DUB
-
USM
31h 10m
2 stops
Multiple Airlines Logo
08:15 - 06:25
USM
-
DUB
29h 10m
2 stops
€857Multiple Airlines
Fri, 13 Mar - Sat, 21 Mar
British Airways Logo
20:30 - 21:10
ORK
-
USM
42h 40m
2 stops
British Airways Logo
13:30 - 23:50
USM
-
ORK
40h 20m
2 stops
€1,095British Airways
Wed, 10 Jun - Sun, 14 Jun
British Airways Logo
20:30 - 18:15
ORK
-
USM
39h 45m
2 stops
British Airways Logo
13:30 - 23:50
USM
-
ORK
40h 20m
2 stops
€1,101British Airways
Wed, 10 Jun - Sun, 14 Jun
Qatar Airways Logo
07:40 - 16:40
ORK
-
USM
26h 00m
3 stops
Qatar Airways Logo
17:40 - 11:10
USM
-
ORK
24h 30m
3 stops
€1,549Qatar Airways
Fri, 27 Feb - Tue, 3 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 12 February 2026.
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

Wed 3/6

15:00-11:55

2 stops38h 55m

Ko Samui

Sat 20/6

15:25-13:30

2 stops28h 05m

€803

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Wed 3/6

13:25-16:35

2 stops21h 10m

Ko Samui

Sat 20/6

07:50-22:25

2 stops20h 35m

€805

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Wed 3/6

13:25-16:50

2 stops21h 25m

Ko Samui

Sat 20/6

09:15-22:25

2 stops19h 10m

€808

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Fri 13/3

17:50-08:00

2 stops31h 10m

Ko Samui

Sat 21/3

08:15-09:50

3 stops32h 35m

€845

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Thu 5/3

21:20-08:25

2 stops28h 05m

Ko Samui

Wed 18/3

20:20-06:00

2 stops40h 40m

€852

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Thu 9/4

09:00-11:05

2 stops20h 05m

Ko Samui

Sun 3/5

06:00-07:15

2 stops31h 15m

€855

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Fri 13/3

17:50-08:00

2 stops31h 10m

Ko Samui

Sat 21/3

08:15-06:25

2 stops29h 10m

€857

CorkKo Samui

ORK - USM

ORKUSM

Cork

Wed 10/6

20:30-21:10

2 stops42h 40m

Ko Samui

Sun 14/6

13:30-23:50

2 stops40h 20m

€1,095

CorkKo Samui

ORK - USM

ORKUSM

Cork

Wed 10/6

20:30-18:15

2 stops39h 45m

Ko Samui

Sun 14/6

13:30-23:50

2 stops40h 20m

€1,101

CorkKo Samui

ORK - USM

ORKUSM

Cork

Fri 27/2

07:40-16:40

3 stops26h 00m

Ko Samui

Tue 3/3

17:40-11:10

3 stops24h 30m

€1,549

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 €833.

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 €564. Flights from Ireland to Ko Samui on a Sunday will generally be more expensive and average around €726. 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 €524. In contrast, the most expensive time of day to depart to Ko Samui is at midday when prices are around €590.

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 €800 in April
MOST EXPENSIVE MONTH TO FLY TO KO SAMUI FROM DUBLINDecember77% more expensiveIt costs about €1,921 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

€803

Fastest flight time

38h 55m

Popular in

December
The best round-trip flight price to Ko Samui from Ireland in the last 72 hours is €803 (Dublin to Ko Samui).
The fastest flight to Ko Samui from Ireland takes 38h 55m (Dublin to Ko Samui).
December has the highest demand for flights to Ko Samui, with a 17% 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 €38 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 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
Sat 14/3
Sat 21/3

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Popular Flights to Ko Samui

Popular routes according to searches in the past day on momondo