USM

€375 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 23/9. 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

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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Flights 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

Tue, 23 Sep - Tue, 7 Oct
SWISS Logo
13:00 - 13:45DUB-USM
18h 45m2 stops
SWISS Logo
08:45 - 12:10USM-DUB
33h 25m2 stops
€686SWISS
Find Deal
Tue, 23 Sep - Mon, 6 Oct
SWISS Logo
13:00 - 12:45DUB-USM
17h 45m2 stops
SWISS Logo
08:45 - 12:10USM-DUB
33h 25m2 stops
€689SWISS
Find Deal
Tue, 23 Sep - Sun, 5 Oct
SWISS Logo
13:00 - 13:45DUB-USM
18h 45m2 stops
SWISS Logo
09:15 - 12:10USM-DUB
32h 55m2 stops
€706SWISS
Find Deal
Thu, 25 Sep - Tue, 7 Oct
 Logo
09:00 - 21:10DUB-USM
30h 10m2 stops
 Logo
08:45 - 12:10USM-DUB
33h 25m2 stops
€727
Find Deal
Thu, 25 Sep - Wed, 8 Oct
 Logo
05:55 - 21:10DUB-USM
33h 15m2 stops
 Logo
17:40 - 16:55USM-DUB
29h 15m2 stops
€769
Find Deal
Sat, 27 Sep - Wed, 8 Oct
Lufthansa Logo
05:55 - 21:10DUB-USM
33h 15m2 stops
Lufthansa Logo
13:30 - 16:55USM-DUB
33h 25m2 stops
€787Lufthansa
Find Deal
Thu, 25 Sep - Fri, 10 Oct
Lufthansa Logo
05:55 - 21:10DUB-USM
33h 15m2 stops
Lufthansa Logo
13:30 - 16:55USM-DUB
33h 25m2 stops
€807Lufthansa
Find Deal
Mon, 22 Sep - Sat, 11 Oct
Qatar Airways Logo
08:15 - 16:55DUB-USM
26h 40m2 stops
Qatar Airways Logo
08:00 - 06:45USM-DUB
28h 45m2 stops
€852Qatar Airways
Find Deal
Fri, 26 Sep - Sat, 11 Oct
Qatar Airways Logo
15:00 - 21:35DUB-USM
24h 35m2 stops
Qatar Airways Logo
08:00 - 06:45USM-DUB
28h 45m2 stops
€911Qatar Airways
Find Deal
Sun, 17 Aug - Mon, 1 Sep
Etihad Airways Logo
09:05 - 18:15DUB-USM
27h 10m2 stops
Etihad Airways Logo
13:30 - 07:10USM-DUB
23h 40m2 stops
€946Etihad Airways
Find Deal
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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 November, where tickets cost €791 on average for return flights. On the other hand, the most expensive months are August and April, where the average cost of tickets from Ireland is €1,425 and €1,346 respectively. For one-way flights, the best month to travel is November with an average price of €791.

Good to know – Book Cheap Ko Samui Plane Tickets

Low seasonApril
High seasonMarch
Cheapest flight€375
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly and prices are also 22% lower 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 round-trip tickets can be as cheap as €507. On the other hand, the most expensive day to fly is Monday, where round-trip prices are €649 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 round-trip flights cost €623 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 €702.

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.

Prefer to fly direct to Ko Samui?

Find which airlines fly direct to Ko Samui Airport, which days they fly and book direct flights.

Direct departures

Ireland to Ko Samui

Monday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Tuesday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Wednesday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Thursday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Friday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Saturday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Sunday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

See more direct flights

Direct returns

Ko Samui to Ireland

Monday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Tuesday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Wednesday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Thursday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Friday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Saturday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

Sunday

Air Astana, Air France, Austrian Airlines, +25 more

Air Astana, Air France, +26 more

See more direct flights
See more direct flights

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 3584 reviews
7.4Entertainment
7.9Crew
7.4Comfort
7.5Boarding
7.3Food
Airline reviews

I’ve flown with Qatar multiple times and the service has always been great. Very professional, organized, the food is delicious and plentiful, tons of entertainment.

10.0 ExcellentAnonymous, May 2025DPS - DOH
Read more Qatar Airways reviews

I’ve flown with Qatar multiple times and the service has always been great. Very professional, organized, the food is delicious and plentiful, tons of entertainment.

The Achilles heel of the experience with Qatar Airways is the Doha Airport, especially for travellers arriving into Doha and not transiting. This airport suffers from being ambitiously big and the immigration into Qatar being overly time taking. At the end of my particular flight in which my travel was ending in Doha, the plane parked at a very remote terminal, from where it took me 30 minutes to arrive just at the immigration counter, with fast paced walking and the time on a train inside the airport. Then, at the immigration counter it takes up to a minute or more to process each tourist visitor,due to time taking face and finger scanning processes and langugage barriers if there are questions or information to be exchanged verbally with the officers. If several planes have landed at the same time, it is not unusual that one has to wait 45 to 60 minutes in the immigration queue. In short, the frustration of arriving at Doha takes away all positive vibe of the airline, as the airline and the airport are heavily intertwined and are marketed together.

I purchased Qatar airways after seeing ads about its service. To my surprise Qatar is marketing gimmick and horrible airlines which I don’t recommend to anyone Flight was dirty including flight from Miami to Doha And Doha airport restrooms are dirty On top of this they use this pathetic cheap indigo From Doha to Hyderabad which I will never fly Also they lost one of my baggage in Indigo and still waiting to receive it. I will never travel Qatar and will never recommend

Seating is terrible, having seats so crammed is unacceptable for a 15-hour journey. I cannot stress enough how uncomfortable it is to sit in such an aircraft. Leg space is roomier in a domestic aircraft. I have not experienced this kind of crammy seating in domestic flights either in the US or other international airlines overseas.

Our male flight attendant was top notch - wish I could remember his name. Boarding is never fun when I have to ride the shuttle to the middle of the tarmac and pull my carry on bags up the stairs to my seat. My knees are banged up and my shoulders give me pain, so the flight started off poorly. The seat leg rests don’t recline completely so that makes is difficult if not dangerous to get in and out of the middle seats. The entertainment system touch screens prevented one from seeing the options. They are old and the software needs to be updated. I was on six planes in the last two weeks and able to see the flight progress without any stress. Couldn’t watch anything else. I do like Qatar Airways, just not a fan of a few things.

Was downgraded from business to economy due to a faulty seat in business class. However when I boarded the plane there were no less than 5 free business class seats. Will never fly Qatar Airways again

Do not overbook flights and kick out confirmed ticketed passengers :-(

Do I need to repeat my complaints about my lost carry on bag?

Between Air India and Qatar my luggage was lost for three days. I eventually found my own luggage location using the Apple Air Tag. Air India used a paper form to report my lost luggage. I could never get past getting past luggage personnel with my report number before they would hang up on me. Only after them specifically telling Air India at Chandigarh airport where my luggage was located which was right under their noses did they react. After three days I finally received my luggage. The Air India luggage folks didn’t seem proactive in finding the luggage’s rightful owner.

Staff was very friendly. There is no on board entertainment, but it’s such a short flight that it doesn’t matter. We also got a meal which was nice and unexpected due to the length of the flight.

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

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