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Cheap flights from Belfast to Southeast Asia from £245

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — BKK
22 Mar — 29 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to Southeast Asia
Explore the most affordable flight options available from Belfast to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2026.

Sat 29/806:20
BFS
-
KUL
2 stops20h 35m
Multiple Airlines
Sat 26/922:00
KUL
-
BFS
2 stops29h 15m
Multiple Airlines
Deal found 16/2£515
Tue 3/1106:30
BFS
-
BKK
2 stops22h 50m
Multiple Airlines
Thu 26/1101:55
BKK
-
BFS
2 stops36h 45m
Multiple Airlines
Deal found 18/2£518
Tue 24/219:40
BFS
-
BKK
3 stops43h 20m
Multiple Airlines
Thu 12/300:55
BKK
-
BFS
2 stops28h 25m
Multiple Airlines
Deal found 16/2£559
Tue 24/205:45
BFS
-
BKK
1 stop21h 40m
Multiple Airlines
Thu 12/312:25
BKK
-
BFS
1 stop26h 00m
Multiple Airlines
Deal found 16/2£561
Mon 23/222:20
BFS
-
BKK
1 stop29h 05m
Multiple Airlines
Thu 12/312:25
BKK
-
BFS
1 stop26h 00m
Multiple Airlines
Deal found 16/2£562
Wed 25/207:55
BFS
-
BKK
2 stops43h 15m
Multiple Airlines
Thu 12/312:25
BKK
-
BFS
1 stop26h 00m
Multiple Airlines
Deal found 16/2£566
Tue 24/205:45
BFS
-
BKK
1 stop21h 40m
Multiple Airlines
Sun 15/319:10
BKK
-
BFS
3 stops44h 55m
Multiple Airlines
Deal found 16/2£572
Tue 24/205:45
BFS
-
BKK
1 stop21h 40m
Multiple Airlines
Tue 10/319:10
BKK
-
BFS
2 stops45h 10m
Multiple Airlines
Deal found 16/2£580
Tue 8/910:20
BHD
-
BKK
2 stops20h 15m
Multiple Airlines
Fri 18/922:35
BKK
-
BHD
2 stops27h 55m
Multiple Airlines
Deal found 17/2£588
Mon 16/317:45
BHD
-
BKK
2 stops33h 25m
Multiple Airlines
Sun 22/302:10
BKK
-
BHD
2 stops36h 30m
Multiple Airlines
Deal found 16/2£590
Mon 16/314:40
BFS
-
BKK
2 stops25h 45m
Multiple Airlines
Mon 23/318:20
BKK
-
BFS
3 stops31h 45m
Multiple Airlines
Deal found 16/2£592
Mon 23/207:50
BFS
-
BKK
2 stops30h 15m
Multiple Airlines
Sun 8/300:55
BKK
-
BFS
3 stops27h 20m
Multiple Airlines
Deal found 18/2£595

Find flight deals from Belfast to Southeast Asia

Keep the following information in mind while searching for Belfast to Southeast Asia flight deals. Data was last updated 20 February 2026.

Round-trip from

£590

One-way from

£245

Popular in

December

Cheapest in

May

Average price

£849
16/3-22/3
  • 16/3-22/3
  • 4 total stops
  • 69h 55m total
  • Belfast to Southeast Asia
Search Deals
12/4
  • 12/4
  • 3 total stops
  • 39h 25m total
  • Belfast to Southeast Asia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£37 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 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 Belfast 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 20 February 2026.
Use the filters below to find and compare flights from Belfast to Southeast Asia that are best for you.

Fly from

Belfast

Fly to

Southeast Asia

Route

Depart

Return

Price

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Mon 16/3

14:40-23:25

2 stops25h 45m

Bangkok Suvarnabhumi

Mon 23/3

18:20-19:05

3 stops31h 45m

£592

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Tue 10/3

05:45-01:20

2 stops36h 35m

Bangkok Suvarnabhumi

Tue 7/4

17:10-15:15

2 stops28h 05m

£603

BelfastBangkok

BHD - BKK

BHDBKK

Belfast City

Mon 16/3

17:45-12:55

2 stops36h 10m

Bangkok Suvarnabhumi

Sat 21/3

02:10-10:20

2 stops39h 10m

£603

BelfastKuala Lumpur

BHD - KUL

BHDKUL

Belfast City

Fri 20/3

14:50-17:25

1 stop18h 35m

Kuala Lumpur Intl

Sun 29/3

22:50-08:40

1 stop16h 50m

£605

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Thu 11/6

06:10-12:30

2 stops24h 20m

Bangkok Suvarnabhumi

Sun 14/6

16:50-10:05

2 stops23h 15m

£605

BelfastManila

BHD - MNL

BHDMNL

Belfast City

Mon 4/5

06:30-00:20

2 stops34h 50m

Manila Ninoy Aquino Intl

Wed 3/6

06:25-08:50

2 stops33h 25m

£618

BelfastBangkok

BHD - BKK

BHDBKK

Belfast City

Tue 5/5

17:30-09:30

1 stop34h 00m

Bangkok Suvarnabhumi

Wed 3/6

11:25-09:20

2 stops27h 55m

£626

BelfastBangkok

BHD - BKK

BHDBKK

Belfast City

Sat 6/6

17:30-09:30

1 stop34h 00m

Bangkok Suvarnabhumi

Sat 27/6

11:25-09:20

2 stops27h 55m

£643

BelfastSingapore

BFS - SIN

BFSSIN

Belfast Intl

Thu 23/4

06:35-08:45

2 stops43h 10m

Singapore Changi

Thu 30/4

05:25-20:10

2 stops21h 45m

£644

BelfastKuala Lumpur

BHD - KUL

BHDKUL

Belfast City

Mon 2/3

11:30-00:15

2 stops28h 45m

Kuala Lumpur Intl

Sun 22/3

18:20-18:35

2 stops56h 15m

£645

Flights are sorted by cheapest return flights first.

Deals found on 18/2

Showing 1-10 of 48 results
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Best time to book a flight from Belfast to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Belfast 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 Belfast to Southeast Asia

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

Currently, January is the cheapest month in which you can book a flight from Belfast to Southeast Asia (average of £449). Flying from Belfast to Southeast Asia in July is currently the most expensive (average of £718). 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 20 February 2026.
Read through reviews of airlines operating flights from Belfast to Southeast Asia, such as KLM, Qatar Airways, andMalaysia Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,458 reviews
Check prices

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Entertainment

7.1

Boarding

7.8

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
1,458 reviews
KLM
7.7
Good
1,458 reviews
Check prices

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Entertainment

7.1

Boarding

7.8

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
Qatar Airways
7.4
Good
3,739 reviews
KLM
7.7
Good
1,458 reviews
Check prices

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Entertainment

7.1

Boarding

7.8

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
Malaysia Airlines
7.3
Good
293 reviews
KLM
7.7
Good
1,458 reviews
Check prices

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Entertainment

7.1

Boarding

7.8

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
British Airways
6.7
Okay
7,753 reviews
KLM
7.7
Good
1,458 reviews
Check prices

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Entertainment

7.1

Boarding

7.8

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 Belfast to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    There are many flights that can get you from Belfast to Southeast Asia in 18h 35m. Fly via British Airways, KLM, or China Southern to get the fastest option. The distance from Belfast to Southeast Asia is about 6752 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    The most popular route from Belfast to Southeast Asia is Belfast Intl - Bangkok Suvarnabhumi. You may also consider Belfast City - Bangkok Suvarnabhumi or Belfast Intl - Manila Ninoy Aquino Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast 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 Belfast to Southeast Asia?

    Currently, January is the cheapest month in which you can book a flight from Belfast to Southeast Asia (average of £449). Flying from Belfast to Southeast Asia in July is currently the most expensive (average of £718). 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

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.

Top 4 airlines flying from Belfast to Southeast Asia

Discover the top 4 airlines that operate flights from Belfast 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 20 February 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£548Average£804FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£560Average£833FlexibilityNo cancel feeOn-time75%
Search KLM flights
Malaysia AirlinesCheapest£621Average£810FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Qatar AirwaysCheapest£817Average£1,111FlexibilityNo cancel feeOn-time68%
Search Qatar 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 Belfast to Southeast Asia?

Cheapflights helps you search for flights from Belfast 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 Belfast to Southeast Asia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Belfast to Southeast Asia for you. Better yet — we are completely free to use.

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

Need flexible booking options for your flight to Southeast Asia from Belfast? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on Belfast to Southeast Asia 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.

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