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Cheap flights from Cardiff to Southeast Asia from £310

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BKK
21 Feb — 28 Feb1
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 22 January 2026.

Thu 28/517:15
CWL
-
BKK
1 stop34h 15m
KLM
Fri 5/612:05
BKK
-
CWL
1 stop27h 10m
KLM
Deal found 21/1£624
Sat 7/316:25
CWL
-
SIN
2 stops20h 50m
Multiple Airlines
Sat 14/320:15
SIN
-
CWL
2 stops32h 40m
Multiple Airlines
Deal found 21/1£635
Mon 9/323:30
CWL
-
DPS
2 stops33h 50m
Multiple Airlines
Sun 22/319:15
DPS
-
CWL
3 stops35h 50m
Multiple Airlines
Deal found 19/1£643
Sun 8/321:20
CWL
-
HKT
3 stops29h 45m
Multiple Airlines
Thu 19/321:15
HKT
-
CWL
3 stops31h 45m
Multiple Airlines
Deal found 20/1£649
Wed 3/609:45
CWL
-
BKK
1 stop17h 45m
KLM
Wed 8/711:25
BKK
-
CWL
2 stops35h 20m
KLM
Deal found 21/1£654
Wed 3/609:45
CWL
-
BKK
2 stops17h 25m
Air France
Wed 8/711:25
BKK
-
CWL
2 stops35h 20m
Air France
Deal found 21/1£672
Tue 5/517:15
CWL
-
BKK
1 stop34h 15m
KLM
Tue 12/512:05
BKK
-
CWL
1 stop34h 40m
KLM
Deal found 21/1£678
Wed 11/310:20
CWL
-
HAN
2 stops32h 25m
Multiple Airlines
Sat 28/302:20
HAN
-
CWL
2 stops36h 55m
Multiple Airlines
Deal found 21/1£680
Mon 26/110:20
CWL
-
BKK
1 stop16h 45m
KLM
Mon 2/211:35
BKK
-
CWL
2 stops36h 20m
KLM
Deal found 21/1£690
Sun 15/321:20
CWL
-
DPS
3 stops34h 05m
Multiple Airlines
Sun 29/319:20
DPS
-
CWL
2 stops33h 40m
Multiple Airlines
Deal found 21/1£699
Sat 7/316:25
CWL
-
BKK
2 stops20h 00m
Multiple Airlines
Fri 13/302:00
BKK
-
CWL
2 stops24h 40m
Multiple Airlines
Deal found 21/1£715
Tue 5/517:15
CWL
-
BKK
1 stop34h 15m
Multiple Airlines
Tue 12/512:05
BKK
-
CWL
1 stop34h 40m
Multiple Airlines
Deal found 21/1£727

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 22 January 2026.

Round-trip from

£624

One-way from

£310

Popular in

July

Cheapest in

September

Average price

£902
KLM
  • KLM
  • 28/5-5/6
  • 2 total stops
  • 61h 25m total
  • Cardiff to Southeast Asia
Search Deals
1/3
  • 1/3
  • 3 total stops
  • 58h 10m total
  • Cardiff to Southeast Asia
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 22 January 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

CardiffSingapore

CWL - SIN

CWLSIN

Cardiff Wales

Sat 7/3

16:25-21:15

2 stops20h 50m

Singapore Changi

Sat 14/3

20:15-20:55

2 stops32h 40m

£635

CardiffDenpasar

CWL - DPS

CWLDPS

Cardiff Wales

Mon 9/3

23:30-17:20

2 stops33h 50m

Denpasar Bali Ngurah Rai

Sun 22/3

19:15-23:05

3 stops35h 50m

£643

CardiffPhuket City

CWL - HKT

CWLHKT

Cardiff Wales

Sun 8/3

21:20-10:05

3 stops29h 45m

Phuket City

Thu 19/3

21:15-22:00

3 stops31h 45m

£649

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Wed 3/6

09:45-09:30

1 stop17h 45m

Bangkok Suvarnabhumi

Wed 8/7

11:25-16:45

2 stops35h 20m

£654

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Thu 28/5

17:15-09:10

2 stops33h 55m

Bangkok Suvarnabhumi

Fri 5/6

12:05-09:15

1 stop27h 10m

£654

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Tue 5/5

17:15-09:30

1 stop34h 15m

Bangkok Suvarnabhumi

Tue 12/5

12:05-16:45

1 stop34h 40m

£678

CardiffHanoi

CWL - HAN

CWLHAN

Cardiff Wales

Wed 11/3

10:20-01:45

2 stops32h 25m

Hanoi Noibai

Sat 28/3

02:20-08:15

2 stops36h 55m

£680

CardiffDenpasar

CWL - DPS

CWLDPS

Cardiff Wales

Sun 15/3

21:20-15:25

3 stops34h 05m

Denpasar Bali Ngurah Rai

Sun 29/3

19:20-22:00

2 stops33h 40m

£699

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Tue 5/5

17:15-09:30

1 stop34h 15m

Bangkok Suvarnabhumi

Tue 12/5

12:05-16:45

1 stop34h 40m

£727

CardiffBangkok

CWL - BKK

CWLBKK

Cardiff Wales

Sat 7/3

23:20-15:30

3 stops33h 10m

Bangkok Suvarnabhumi

Sat 14/3

21:00-20:55

3 stops30h 55m

£739

Flights are sorted by cheapest return flights first.

Deals found on 19/1

Showing 1-10 of 34 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 £329). Flying from Cardiff to Southeast Asia in January is currently the most expensive (average of £634). 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 22 January 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
1,442 reviews
Check prices

Crew

8.4

Food

7.3

Overall

7.7

Boarding

7.8

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,442 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Food

7.3

Overall

7.7

Boarding

7.8

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Etihad Airways
7.3
Good
1,374 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Food

7.3

Overall

7.7

Boarding

7.8

Comfort

7.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 £654, KLM can have you in Southeast Asia from Cardiff in 17h 45m. 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 - Denpasar Bali Ngurah Rai or Cardiff Wales - Manila Ninoy Aquino 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 £329). Flying from Cardiff to Southeast Asia in January is currently the most expensive (average of £634). 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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Alternative routes for Cardiff to Southeast Asia

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 22 January 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£569Average£1,016FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£573Average£717FlexibilityNo 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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