Flights to Ko Samui

€425 Cheap flights to Ko Samui

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Ko Samui departing on 22/8. 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
1 adult, Economy, 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.
SWISS Logo
18:35 - 21:05
DUB
-
USM
19h 30m
2 stops
SWISS Logo
16:25 - 12:35
USM
-
DUB
27h 10m
2 stops
€770SWISS
Fri, 20 Nov - Mon, 30 Nov
Multiple Airlines Logo
09:00 - 17:20
DUB
-
USM
26h 20m
2 stops
Multiple Airlines Logo
07:50 - 07:15
USM
-
DUB
29h 25m
2 stops
€772Multiple Airlines
Mon, 24 Aug - Tue, 8 Sep
Multiple Airlines Logo
09:00 - 15:45
DUB
-
USM
24h 45m
2 stops
Multiple Airlines Logo
18:15 - 18:15
USM
-
DUB
31h 00m
2 stops
€785Multiple Airlines
Thu, 15 Oct - Sun, 25 Oct
Etihad Airways Logo
20:35 - 08:25
DUB
-
USM
29h 50m
2 stops
Etihad Airways Logo
09:15 - 07:15
USM
-
DUB
28h 00m
2 stops
€791Etihad Airways
Thu, 20 Aug - Thu, 3 Sep
Multiple Airlines Logo
08:15 - 14:40
DUB
-
USM
24h 25m
2 stops
Multiple Airlines Logo
07:50 - 07:15
USM
-
DUB
29h 25m
2 stops
€815Multiple Airlines
Mon, 24 Aug - Tue, 8 Sep
Etihad Airways Logo
20:35 - 07:10
DUB
-
USM
28h 35m
2 stops
Etihad Airways Logo
06:00 - 19:05
USM
-
DUB
19h 05m
2 stops
€847Etihad Airways
Wed, 23 Sep - Fri, 2 Oct
British Airways Logo
17:35 - 21:05
ORK
-
USM
20h 30m
2 stops
British Airways Logo
13:25 - 15:25
USM
-
ORK
33h 00m
2 stops
€1,094British Airways
Thu, 5 Nov - Mon, 9 Nov
British Airways Logo
16:05 - 21:05
ORK
-
USM
22h 00m
2 stops
British Airways Logo
16:25 - 11:10
USM
-
ORK
25h 45m
2 stops
€1,095British Airways
Fri, 6 Nov - Fri, 20 Nov
Qatar Airways Logo
11:55 - 18:25
ORK
-
USM
23h 30m
3 stops
Qatar Airways Logo
21:10 - 15:25
USM
-
ORK
25h 15m
3 stops
€1,226Qatar Airways
Fri, 6 Nov - Fri, 20 Nov
Qatar Airways Logo
11:55 - 18:25
ORK
-
USM
23h 30m
3 stops
Qatar Airways Logo
21:10 - 15:25
USM
-
ORK
25h 15m
3 stops
€1,228Qatar Airways
Fri, 6 Nov - Fri, 20 Nov

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 30 June 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
Fastest return journey

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Fri 20/11

18:35-21:05

2 stops19h 30m

Ko Samui

Mon 30/11

16:25-12:35

2 stops27h 10m

€770

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Mon 24/8

09:00-17:20

2 stops26h 20m

Ko Samui

Tue 8/9

07:50-07:15

2 stops29h 25m

€772

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Thu 15/10

09:00-15:45

2 stops24h 45m

Ko Samui

Sun 25/10

18:15-18:15

2 stops31h 00m

€785

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Thu 20/8

20:35-08:25

2 stops29h 50m

Ko Samui

Thu 3/9

09:15-07:15

2 stops28h 00m

€791

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Mon 24/8

08:15-14:40

2 stops24h 25m

Ko Samui

Tue 8/9

07:50-07:15

2 stops29h 25m

€815

DublinKo Samui

DUB - USM

DUBUSM

Dublin

Wed 23/9

20:35-07:10

2 stops28h 35m

Ko Samui

Fri 2/10

06:00-19:05

2 stops19h 05m

€847

CorkKo Samui

ORK - USM

ORKUSM

Cork

Thu 5/11

17:35-21:05

2 stops20h 30m

Ko Samui

Mon 9/11

13:25-15:25

2 stops33h 00m

€1,094

CorkKo Samui

ORK - USM

ORKUSM

Cork

Fri 6/11

16:05-21:05

2 stops22h 00m

Ko Samui

Fri 20/11

16:25-11:10

2 stops25h 45m

€1,095

CorkKo Samui

ORK - USM

ORKUSM

Cork

Fri 6/11

11:55-18:25

3 stops23h 30m

Ko Samui

Fri 20/11

21:10-15:25

3 stops25h 15m

€1,226

CorkKo Samui

ORK - USM

ORKUSM

Cork

Fri 6/11

11:55-18:25

3 stops23h 30m

Ko Samui

Fri 20/11

21:10-15:25

3 stops25h 15m

€1,228

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 September, then book flights to Ko Samui from Ireland during April instead. Flights to Ko Samui in April, while not as cheap as those in September, still average around €834.

Cheap Ko Samui flight deals and tips

Summary info about Ko Samui flight prices, duration and airlines

Best One-Way Price

€425

Best Round-Trip Price

€770

Fastest flight time

32h 00m

Popular in

December
The best one-way flight price to Ko Samui from Ireland in the last 5 days is €425 (Dublin to Ko Samui).
The best round-trip flight price to Ko Samui from Ireland in the last 5 days is €770 (Dublin to Ko Samui).
The fastest flight to Ko Samui from Ireland takes 32h 00m (Dublin to Ko Samui).
December has the highest demand for flights to Ko Samui, with a 22% 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, Lamai 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 €78 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
Thu 30/7
Thu 6/8

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Popular routes according to searches in the past day on momondo