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Cheap flights from Cardiff to Southeast Asia from £303

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/5. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BKK
23 Mar — 30 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Southeast Asia
Explore the most affordable flight options available from Cardiff to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2026.

Wed 22/423:50
CWL
-
BKK
2 stops30h 00m
Multiple Airlines
Wed 20/510:55
BKK
-
CWL
3 stops41h 30m
Multiple Airlines
Deal found 21/2£607
Wed 22/423:50
CWL
-
BKK
2 stops24h 25m
Multiple Airlines
Thu 21/510:55
BKK
-
CWL
3 stops41h 25m
Multiple Airlines
Deal found 21/2£626
Thu 16/422:50
CWL
-
BKK
2 stops31h 00m
Multiple Airlines
Tue 21/403:15
BKK
-
CWL
2 stops26h 10m
Multiple Airlines
Deal found 18/2£645
Thu 10/917:15
CWL
-
SIN
1 stop15h 25m
Multiple Airlines
Thu 17/906:40
SIN
-
CWL
2 stops33h 35m
Multiple Airlines
Deal found 20/2£647
Mon 13/422:25
CWL
-
SIN
3 stops35h 55m
Multiple Airlines
Mon 20/421:00
SIN
-
CWL
2 stops32h 50m
Multiple Airlines
Deal found 20/2£656
Wed 22/417:15
CWL
-
BKK
2 stops34h 00m
KLM
Wed 20/512:05
BKK
-
CWL
1 stop27h 10m
KLM
Deal found 21/2£657
Mon 18/517:15
CWL
-
BKK
1 stop34h 15m
KLM
Sun 14/612:05
BKK
-
CWL
1 stop27h 10m
KLM
Deal found 18/2£666
Wed 22/409:45
CWL
-
BKK
2 stops17h 30m
KLM
Thu 21/512:05
BKK
-
CWL
1 stop27h 10m
KLM
Deal found 21/2£676
Fri 6/312:20
CWL
-
BKK
2 stops28h 05m
Multiple Airlines
Thu 19/309:15
BKK
-
CWL
3 stops43h 45m
Multiple Airlines
Deal found 21/2£678
Mon 18/522:25
CWL
-
BKK
2 stops25h 50m
Multiple Airlines
Sun 14/606:10
BKK
-
CWL
3 stops21h 10m
Multiple Airlines
Deal found 18/2£685
Mon 11/509:45
CWL
-
KUL
1 stop22h 55m
KLM
Tue 2/623:55
KUL
-
CWL
1 stop16h 20m
KLM
Deal found 20/2£713
Thu 19/217:25
CWL
-
SIN
1 stop14h 50m
KLM
Wed 25/201:40
SIN
-
CWL
1 stop23h 15m
KLM
Deal found 18/2£730

Find flight deals from Cardiff to Southeast Asia

Keep the following information in mind while searching for Cardiff to Southeast Asia flight deals. Data was last updated 21 February 2026.

Round-trip from

£607

One-way from

£303

Popular in

July

Cheapest in

September

Average price

£753
22/4-20/5
  • 22/4-20/5
  • 5 total stops
  • 71h 30m total
  • Cardiff to Southeast Asia
Search Deals
21/5
  • 21/5
  • 2 total stops
  • 25h 25m total
  • Cardiff to Southeast Asia
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£34 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 February 2026.
Use the filters below to find and compare flights from Cardiff to Southeast Asia that are best for you.

Fly from

Cardiff

Fly to

Southeast Asia

Route

Depart

Return

Price

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Mon 18/5

17:15-09:30

1 stop34h 15m

Bangkok Suvarnabhumi

Sun 14/6

11:25-09:15

2 stops27h 50m

£620

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Thu 16/4

22:50-11:50

2 stops31h 00m

Bangkok Suvarnabhumi

Tue 21/4

03:15-23:25

2 stops26h 10m

£645

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Wed 22/4

17:15-09:15

2 stops34h 00m

Bangkok Suvarnabhumi

Wed 20/5

12:05-09:15

1 stop27h 10m

£657

CardiffKuala Lumpur

CWL - KUL

CWLKUL

Cardiff Wales

Mon 11/5

09:45-15:40

1 stop22h 55m

Kuala Lumpur Intl

Tue 2/6

23:55-09:15

1 stop16h 20m

£716

CardiffSingapore

CWL - SIN

CWLSIN

Cardiff Wales

Mon 13/4

17:15-15:40

1 stop15h 25m

Singapore Changi

Mon 20/4

22:20-16:45

2 stops25h 25m

£751

CardiffSingapore

CWL - SIN

CWLSIN

Cardiff Wales

Mon 13/4

09:45-17:20

2 stops24h 35m

Singapore Changi

Mon 20/4

21:00-22:50

2 stops32h 50m

£751

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Mon 18/5

17:15-06:45

3 stops31h 30m

Bangkok Suvarnabhumi

Sun 14/6

06:10-21:20

3 stops21h 10m

£788

CardiffKuala Lumpur

CWL - KUL

CWLKUL

Cardiff Wales

Wed 18/3

10:20-15:40

1 stop21h 20m

Kuala Lumpur Intl

Wed 25/3

23:50-09:50

1 stop18h 00m

£799

CardiffSingapore

CWL - SIN

CWLSIN

Cardiff Wales

Thu 19/3

10:30-18:40

2 stops24h 10m

Singapore Changi

Thu 26/3

08:45-22:00

3 stops45h 15m

£803

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Tue 28/4

09:45-09:30

1 stop17h 45m

Bangkok Suvarnabhumi

Sun 10/5

12:05-09:15

1 stop27h 10m

£819

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 44 results
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Best time to book a flight from Cardiff to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Cardiff with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cardiff to Southeast Asia

What is the cheapest month to book a flight from Cardiff to Southeast Asia?

Currently, May is the cheapest month in which you can book a flight from Cardiff to Southeast Asia (average of £378). Flying from Cardiff to Southeast Asia in July is currently the most expensive (average of £712). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 21 February 2026.
Check out reviews from past customers who have flown with KLM and Etihad Airways from Cardiff to Southeast Asia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,457 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,457 reviews
KLM
7.7
Good
1,457 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Etihad Airways
7.3
Good
1,406 reviews
KLM
7.7
Good
1,457 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Cardiff to Southeast Asia?

    Located just 9.1 mi from the city center, Cardiff Wales (CWL) is the airport most travelers will use when flying to Southeast Asia from Cardiff.

  • How long is the flight from Cardiff to Southeast Asia?

    For as low as £620, KLM can have you in Southeast Asia from Cardiff in 34h 15m. Cardiff and Southeast Asia are separated by a distance of 6066 mi.

  • What are the most popular routes from Cardiff to Southeast Asia?

    While some choose either Cardiff Wales - Phuket City or Cardiff Wales - Kuala Lumpur Intl, Cardiff Wales - Bangkok Suvarnabhumi is the most popular route from Cardiff to Southeast Asia.

  • Can I find deals for flights from Cardiff to Southeast Asia that include hotel bookings?

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

  • How can I find direct flights from Cardiff to Southeast Asia?

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

  • Can I find deals for business class flights from Cardiff to Southeast Asia?

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

  • What is the cheapest month to book a flight from Cardiff to Southeast Asia?

    Currently, May is the cheapest month in which you can book a flight from Cardiff to Southeast Asia (average of £378). Flying from Cardiff to Southeast Asia in July is currently the most expensive (average of £712). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Cardiff to Southeast Asia

Discover the top 2 airlines that operate flights from Cardiff to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 February 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£328Average£1,033FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£571Average£707FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Cardiff to Southeast Asia?

Cheapflights helps you search for flights from Cardiff to Southeast Asia via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Southeast Asia?

Cheapflights helps you find that perfect flight to Southeast Asia from Cardiff by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Cardiff to Southeast Asia with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Cardiff to Southeast Asia flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Cardiff to Southeast Asia become cheaper?

Yes! Start tracking prices for Cardiff to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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