USM

€342 Find Cheap Flights to Ko Samui

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ko Samui departing on 14/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ko Samui

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ko Samui, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ko Samui, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
€794
Overall average: €958
Multiple Airlines
Mon 16/3Sun 29/3
DUB - USM • 3 stops
Cheapest one-way flight
€342
Multiple Airlines
Tue 14/4
DUB - USM • 3 stops
When to travel
April
Cheapest • 26% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Ko Samui!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Ko Samui

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Ko Samui that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Ko Samui

Mon, 16 Mar - Sun, 29 Mar
Multiple Airlines Logo
11:40 - 11:00
DUB
-
USM
40h 20m
3 stops
Multiple Airlines Logo
06:00 - 19:15
USM
-
DUB
44h 15m
3 stops
€794Multiple Airlines
Wed, 3 Jun - Sat, 20 Jun
Qatar Airways Logo
08:15 - 10:30
DUB
-
USM
20h 15m
2 stops
Qatar Airways Logo
15:25 - 06:45
USM
-
DUB
21h 20m
2 stops
€796Qatar Airways
Wed, 3 Jun - Sat, 20 Jun
Qatar Airways Logo
08:15 - 10:30
DUB
-
USM
20h 15m
2 stops
Qatar Airways Logo
15:25 - 06:45
USM
-
DUB
21h 20m
2 stops
€797Qatar Airways
Wed, 3 Jun - Sat, 20 Jun
Qatar Airways Logo
15:00 - 13:55
DUB
-
USM
40h 55m
2 stops
Qatar Airways Logo
11:25 - 06:45
USM
-
DUB
25h 20m
2 stops
€808Qatar Airways
Mon, 23 Mar - Mon, 30 Mar
Multiple Airlines Logo
06:20 - 21:20
DUB
-
USM
32h 00m
3 stops
Multiple Airlines Logo
10:05 - 10:45
USM
-
DUB
30h 40m
3 stops
€843Multiple Airlines
Thu, 5 Mar - Wed, 18 Mar
Multiple Airlines Logo
21:20 - 08:25
DUB
-
USM
28h 05m
2 stops
Multiple Airlines Logo
21:10 - 06:00
USM
-
DUB
39h 50m
2 stops
€847Multiple Airlines
Thu, 5 Mar - Wed, 18 Mar
Multiple Airlines Logo
21:20 - 08:25
DUB
-
USM
28h 05m
2 stops
Multiple Airlines Logo
21:10 - 06:00
USM
-
DUB
39h 50m
2 stops
€856Multiple Airlines
Wed, 10 Jun - Sun, 14 Jun
British Airways Logo
16:10 - 18:15
ORK
-
USM
20h 05m
2 stops
British Airways Logo
16:25 - 23:50
USM
-
ORK
37h 25m
2 stops
€1,101British Airways
Wed, 10 Jun - Sun, 14 Jun
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
€1,102British Airways
Wed, 10 Jun - Sun, 14 Jun
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
€1,102British Airways
Booking Insights

KAYAK's insights & trends for flights to Ko Samui

Get data-powered insights and trends into flights to Ko Samui to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Ko Samui?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Ko Samui, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Ko Samui is April, where tickets cost €805 on average for one-way flights. On the other hand, the most expensive months are December and October, where the average cost of tickets from Ireland is €1,933 and €1,273 respectively. For return trips, the best month to travel is April with an average price of €805.

Good to know – Book Cheap Ko Samui Plane Tickets

Low seasonJanuary
Cheapest flight€342
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly (14% more expensive on average)
Flight from Dublin to Ko Samui

When to book flights to Ko Samui

Are your dates flexible? Find out the best times to travel to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Ko Samui based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Ko Samui flights

  • How far is Ko Samui Airport from central Ko Samui?

    The distance between Ko Samui Airport and the city centre of Ko Samui is 3 km.

  • What is the name of Ko Samui’s airport?

    All flights to Ko Samui land at Ko Samui Airport. The airport code is USM,and it can also be referred to as Ko Samui, Koh Samui, or Samui.

  • What is the cheapest day to fly to Ko Samui?

    Based on KAYAK data, the cheapest day to fly to Ko Samui is Thursday where tickets can be as cheap as €496. On the other hand, the most expensive day to fly is Monday, where prices are €634 on average.

  • How does KAYAK find such low prices on flights to Ko Samui?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ko Samui.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ko Samui?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ko Samui is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ko Samui?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ko Samui with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ko Samui?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ko Samui up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ko Samui?

    The cheapest time of day to fly to Ko Samui is generally in the evening, when flights cost €527 on average. The most expensive time of day to fly to Ko Samui is generally in the afternoon, which is peak travel time and where the average cost of a ticket is €594.

Top tips for finding cheap flights to Ko Samui

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ko Samui flight deals.

Reviews of the top airline flying to Ko Samui

 
See real verified KAYAK customer reviews for airlines flying to Ko Samui. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Ko Samui. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ko Samui? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Qatar AirwaysOverall score based on 3730 reviews
7.9Crew
7.3Food
7.4Entertainment
7.5Boarding
7.4Comfort
Airline reviews

Qatar Airways is an excellent service provider. The crew members were attentive and helpful. The aircraft was very clean. This was the longest leg of our journey, so it would have been nice to have more leg room for comfort. We appreciated the crew's service of four hot meals to all of us during this long flight. Also, it was helpful that the crew asked us to keep the window shades down for the entire journey, allowing the environment to get lots of rest during the trip. For families traveling with little children, this was helpful to them to keep them settled.

10.0 ExcellentAnonymous, Jan 2026
DOH - BOS
Read more Qatar Airways reviews

Qatar Airways is an excellent service provider. The crew members were attentive and helpful. The aircraft was very clean. This was the longest leg of our journey, so it would have been nice to have more leg room for comfort. We appreciated the crew's service of four hot meals to all of us during this long flight. Also, it was helpful that the crew asked us to keep the window shades down for the entire journey, allowing the environment to get lots of rest during the trip. For families traveling with little children, this was helpful to them to keep them settled.

This flight was a very good trip for us. The crew were very friendly and helpful. They made arrangements for my husband to have assistance in boarding. We were not expecting a meal, so it was a pleasant surprise on this short flight to have a meal and beverage from a very courteous crew.

Flight departed punctually on time. Unfortunately it seems because the destination airport is a secondary airport the airline sees it fit to operate a plane with lower comfort and offerings. There was no inflight entertainment, wifi or let alone a screen to at least track flight status for remaining flight time.

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar/Indigo may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar/Indigo, wake up and do it right by your customers, or they may not be your customers anymore.

I wish I knew in advance that the connecting flight was by indigo air

Initial booking was confusing and had to get new CC issued.

As good as you can expect an economy flight from Europe to Australia to be. Nothing agains Qatar, just feels like every new generation of plane gets tighter.

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Food was absolutely pathetic. I wasted so much food which I thought was inedible. I also loathe the inflight entertainment system which has very little content

The flight was operated by IndiGo and not Qatar, which is a budget airline from India. Nevertheless, the flight was uneventful.

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
Khanom

Everything you need to know for your flight to Ko Samui

Information on the airport you'll fly into in Ko Samui