Question 1

E

Accepted Answer

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

Question 2

E

Accepted Answer

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

Question 3

What is the cheapest time of day to fly from CWL to USM?

Accepted Answer

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Cardiff to Ko Samui as you normally would.

Question 4

Can I find deals for flights from Cardiff to Ko Samui that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Cardiff to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 5

How can I find direct flights from Cardiff to Ko Samui?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Ko Samui.

Question 6

Can I find deals for business class flights from Cardiff to Ko Samui?

Accepted Answer

Yes. Cheapflights offers flight deals from Cardiff to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 7

How does Cheapflights help users find flights from Cardiff to Ko Samui?

Accepted Answer

Cheapflights makes it easy to find Cardiff to Ko Samui flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Question 8

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Ko Samui?

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from Cardiff to Ko Samui by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Question 9

Can Cheapflights find flights from Cardiff to Ko Samui with no change fees?

Accepted Answer

Certainly. Search results for flights to Ko Samui from Cardiff shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 10

Can Cheapflights notify me if prices for flights from Cardiff to Ko Samui become cheaper?

Accepted Answer

Yes, Cheapflights offers price alerts on Cardiff to Ko Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

Cheap flights from Cardiff to Ko Samui from £1,194

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Cardiff to Ko Samui

Cheapest flights from Cardiff to Ko SamuiExplore the most affordable flight options available from Cardiff to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Explore the most affordable flight options available from Cardiff to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Best flights from Cardiff to Ko SamuiDiscover carefully curated flight deals from Cardiff to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Discover carefully curated flight deals from Cardiff to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Find flight deals from Cardiff to Ko Samui

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Cardiff to Ko Samui that are best for you.

Best time to book a flight from Cardiff to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Cardiff with our price prediction graph.

Related info for your journey

Can I find deals for flights from Cardiff to Ko Samui that include hotel bookings?

How can I find direct flights from Cardiff to Ko Samui?

Can I find deals for business class flights from Cardiff to Ko Samui?

Travelling to a place near Ko Samui?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cardiff to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ko Samui by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Thailand

Book a non-stop flight to one of these other cities located in Thailand.

Search flights from Cardiff to Ko Samui by cabin class

Find flights from Cardiff to Ko Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ko Samui

Explore flights to Ko Samui departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 20 September 2026.

Cardiff and Ko Samui flights

Browse other Cardiff and Ko Samui flight options. Last updated on 20 September 2026.

Other flights from Cardiff

Browse through other flights departing from Cardiff. Flights are based on user searches made on Cheapflights and were last updated on 20 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

How does Cheapflights help users find flights from Cardiff to Ko Samui?

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Ko Samui?

Can Cheapflights find flights from Cardiff to Ko Samui with no change fees?

Can Cheapflights notify me if prices for flights from Cardiff to Ko Samui become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Cardiff to Ko Samui
Explore the most affordable flight options available from Cardiff to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Best flights from Cardiff to Ko Samui
Discover carefully curated flight deals from Cardiff to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.