Which airports can I use when flying from Cardiff to Ko Samui?

Flights from Cardiff to Ko Samui usually depart from Cardiff Wales (CWL) and arrive at Ko Samui (USM).

Can I save money by using flexible dates for flights from Cardiff to Ko Samui?

Yes. Being flexible with your travel dates can save you up to 43% on the Cardiff to Ko Samui route. Thursday is the cheapest departure day at ฿40,151 return on average, while Tuesday is the most expensive at ฿70,387, a difference of ฿30,237. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Ko Samui?

Some of the most popular sights in Ko Samui are Chaweng Beach, Lamai Beach, and Hin Ta and Hin Yai Rocks. These are among the most viewed places in Ko Samui on KAYAK.

Do I need a passport to fly from Cardiff to Ko Samui?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Cardiff to Ko Samui changed much recently?

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿43,720 to ฿216,615. That means the highest observed fare was about 5x higher than the lowest one.

What is the time difference between Cardiff and Ko Samui?

Ko Samui is 6 hours ahead of Cardiff (Indochina Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Which car hire options are available at Ko Samui Airport (USM)?

Ko Samui Airport (USM) hosts 5 major car hire companies, with daily rates starting from around ฿448 for economy cars. Top options include: • Drive Car Rental • Alamo • Sixt • Enterprise Rent-A-Car • Hertz

Cheap Flights from Cardiff to Ko Samui | KAYAK

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Cheapest return flight

฿43,720

Typical prices: ฿43,579-฿70,372

Multiple Airlines

Mon 22/10Mon 29/10

CWL - USM • 2 stops

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Flight Deals

Cheap Flights from Cardiff to Ko Samui (CWL-USM)

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

Recent return flight deals from Cardiff to Ko Samui

Thu 22 Oct - Thu 29 Oct

17:15 - 19:40CWL Cardiff Wales-USM Ko Samui

20h 25m2 stops Amsterdam Schiphol Hong Kong Intl

07:55 - 09:50USM Ko Samui-CWL Cardiff Wales

32h 55m2 stops Bangkok Suvarnabhumi Amsterdam Schiphol

฿43,720Multiple Airlines

Thu 22 Oct - Thu 29 Oct

09:00 - 21:35CWL Cardiff Wales-USM Ko Samui

30h 35m3 stops Malaga Madrid Barajas Bangkok Suvarnabhumi

09:40 - 15:40USM Ko Samui-CWL Cardiff Wales

37h 00m3 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl Dublin

฿46,594Multiple Airlines

Thu 22 Oct - Thu 29 Oct

17:15 - 19:40CWL Cardiff Wales-USM Ko Samui

20h 25m2 stops Amsterdam Schiphol Hong Kong Intl

21:30 - 22:45USM Ko Samui-CWL Cardiff Wales

32h 15m3 stops Bangkok Suvarnabhumi Istanbul Dublin

฿59,086Multiple Airlines

Sat 19 Dec - Sat 2 Jan

17:30 - 08:00CWL Cardiff Wales-USM Ko Samui

31h 30m3 stops Amsterdam Schiphol Vienna Intl Singapore Changi

08:40 - 13:55USM Ko Samui-CWL Cardiff Wales

36h 15m3 stops Bangkok Suvarnabhumi Beijing Capital Dublin

฿67,843Multiple Airlines

Fri 18 Dec - Fri 1 Jan

17:30 - 19:50CWL Cardiff Wales-USM Ko Samui

19h 20m2 stops Amsterdam Schiphol Bangkok Suvarnabhumi

09:20 - 09:50USM Ko Samui-CWL Cardiff Wales

31h 30m2 stops Bangkok Suvarnabhumi Amsterdam Schiphol

฿87,604เคแอลเอ็ม รอยัล ดัตช์ แอร์ไลน์

Sat 19 Dec - Sun 20 Dec

10:20 - 16:15CWL Cardiff Wales-USM Ko Samui

22h 55m2 stops Amsterdam Schiphol Bangkok Suvarnabhumi

19:00 - 09:50USM Ko Samui-CWL Cardiff Wales

45h 50m2 stops Bangkok Suvarnabhumi Amsterdam Schiphol

฿88,463Multiple Airlines

Sat 19 Dec - Sat 2 Jan

17:30 - 15:35CWL Cardiff Wales-USM Ko Samui

39h 05m2 stops Amsterdam Schiphol Bangkok Suvarnabhumi

20:30 - 17:00USM Ko Samui-CWL Cardiff Wales

51h 30m2 stops Bangkok Suvarnabhumi Amsterdam Schiphol

฿88,563เคแอลเอ็ม รอยัล ดัตช์ แอร์ไลน์

Sat 19 Dec - Sun 20 Dec

08:15 - 17:40CWL Cardiff Wales-USM Ko Samui

26h 25m3 stops Dublin Munich Franz Josef Strauss Bangkok Suvarnabhumi

20:20 - 11:45USM Ko Samui-CWL Cardiff Wales

46h 25m3 stops Bangkok Suvarnabhumi Manchester Belfast City

฿95,403Multiple Airlines

Thu 17 Dec - Mon 4 Jan

17:30 - 18:15CWL Cardiff Wales-USM Ko Samui

41h 45m2 stops Amsterdam Schiphol Singapore Changi

16:25 - 17:00USM Ko Samui-CWL Cardiff Wales

31h 35m2 stops Singapore Changi Amsterdam Schiphol

฿180,397Singapore Airlines

Thu 24 Dec - Mon 4 Jan

17:30 - 18:15CWL Cardiff Wales-USM Ko Samui

41h 45m2 stops Amsterdam Schiphol Singapore Changi

16:25 - 17:00USM Ko Samui-CWL Cardiff Wales

31h 35m2 stops Singapore Changi Amsterdam Schiphol

฿195,267Singapore Airlines

Booking Insights

Price, demand, and travel trends for Cardiff to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Cardiff to Ko Samui with more confidence.

What is the cheapest airline to fly from Cardiff to Ko Samui?

เคแอลเอ็ม รอยัล ดัตช์ แอร์ไลน์ (฿87,604) and Singapore Airlines (฿180,397) are the cheapest airlines to fly return from Cardiff to Ko Samui according to KAYAK data over the last 5 days.

Find deals

When to book flights from Cardiff to Ko Samui

Are your dates flexible? Find out the best times to travel from Cardiff 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. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Cardiff to Ko Samui?
Flights from Cardiff to Ko Samui usually depart from Cardiff Wales (CWL) and arrive at Ko Samui (USM).
Can I save money by using flexible dates for flights from Cardiff to Ko Samui?
Yes. Being flexible with your travel dates can save you up to 43% on the Cardiff to Ko Samui route. Thursday is the cheapest departure day at ฿40,151 return on average, while Tuesday is the most expensive at ฿70,387, a difference of ฿30,237. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Ko Samui?
Some of the most popular sights in Ko Samui are Chaweng Beach, Lamai Beach, and Hin Ta and Hin Yai Rocks. These are among the most viewed places in Ko Samui on KAYAK.
Do I need a passport to fly from Cardiff to Ko Samui?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from Cardiff to Ko Samui changed much recently?
Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿43,720 to ฿216,615. That means the highest observed fare was about 5x higher than the lowest one.
What is the time difference between Cardiff and Ko Samui?
Ko Samui is 6 hours ahead of Cardiff (Indochina Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.
Which car hire options are available at Ko Samui Airport (USM)?
Ko Samui Airport (USM) hosts 5 major car hire companies, with daily rates starting from around ฿448 for economy cars. Top options include:
• Drive Car Rental
• Alamo
• Sixt
• Enterprise Rent-A-Car
• Hertz

If your dates are flexible, aim for a Thursday departure instead of Tuesday. On this route, Thursday flights average ฿40,151 – about ฿30,237 less than Tuesday (43% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.
- Ozo Chaweng Samui - Sha Extra Plus
- Cosi Samui Chaweng Beach
- Melia Koh Samui

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CWL - USM

฿43,720 Find Cheap Flights from Cardiff to Ko Samui – Compare and Save

Everything you should know

Cheap Flights from Cardiff to Ko Samui (CWL-USM)

Recent return flight deals from Cardiff to Ko Samui

Recent one-way flight deals from Cardiff to Ko Samui

Recent last minute flight deals from Cardiff to Ko Samui

Price, demand, and travel trends for Cardiff to Ko Samui flights

What is the cheapest airline to fly from Cardiff to Ko Samui?

When to book flights from Cardiff to Ko Samui

Your Cardiff to Ko Samui flight questions, answered

Your guide to booking Cardiff to Ko Samui flights

More options for your flight from Cardiff to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car hire

Information on your arrival and departure airports

Cabin class types available on flights from Cardiff to Ko Samui

Flights from domestic origins to Ko Samui

Flights to other popular destinations