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Cheap flights from Belfast to Southeast Asia from £355

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — BKK
23 Apr — 30 Apr1
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 24 March 2026.

Wed 6/506:10
BFS
-
BKK
2 stops24h 25m
Multiple Airlines
Wed 27/522:35
BKK
-
BFS
2 stops28h 05m
Multiple Airlines
Deal found 19/3£523
Wed 22/420:15
BFS
-
BKK
3 stops45h 35m
Multiple Airlines
Wed 6/522:45
BKK
-
BFS
2 stops22h 35m
Multiple Airlines
Deal found 19/3£533
Tue 5/506:15
BFS
-
SIN
2 stops26h 30m
Multiple Airlines
Tue 12/523:10
SIN
-
BFS
2 stops28h 45m
Multiple Airlines
Deal found 21/3£536
Mon 2/1106:30
BFS
-
BKK
2 stops22h 50m
Multiple Airlines
Thu 19/1101:55
BKK
-
BFS
2 stops25h 45m
Multiple Airlines
Deal found 22/3£540
Thu 11/606:10
BFS
-
BKK
2 stops24h 25m
Multiple Airlines
Wed 8/722:35
BKK
-
BFS
2 stops28h 05m
Multiple Airlines
Deal found 21/3£582
Sun 7/606:30
BHD
-
BKK
2 stops46h 40m
Multiple Airlines
Tue 23/603:15
BKK
-
BHD
2 stops38h 45m
Multiple Airlines
Deal found 19/3£585
Wed 6/507:30
BFS
-
BKK
3 stops46h 40m
Multiple Airlines
Wed 13/522:45
BKK
-
BFS
2 stops22h 35m
Multiple Airlines
Deal found 22/3£593
Thu 1/1016:35
BHD
-
BKK
2 stops35h 45m
Multiple Airlines
Mon 26/1018:55
BKK
-
BHD
2 stops44h 30m
Multiple Airlines
Deal found 20/3£595
Thu 11/607:00
BHD
-
BKK
2 stops23h 35m
Multiple Airlines
Wed 8/722:35
BKK
-
BHD
2 stops22h 30m
Multiple Airlines
Deal found 21/3£610
Sat 3/1007:00
BHD
-
BKK
2 stops24h 05m
Multiple Airlines
Mon 26/1012:45
BKK
-
BHD
1 stop27h 50m
Multiple Airlines
Deal found 22/3£613
Mon 4/516:10
BFS
-
SIN
3 stops34h 30m
Multiple Airlines
Thu 21/521:00
SIN
-
BFS
2 stops25h 05m
Multiple Airlines
Deal found 20/3£618
Mon 4/507:05
BFS
-
SIN
2 stops43h 35m
Multiple Airlines
Mon 11/521:00
SIN
-
BFS
2 stops30h 55m
Multiple Airlines
Deal found 20/3£624

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 24 March 2026.

Round-trip from

£523

One-way from

£355

Popular in

December

Cheapest in

August

Average price

£751
6/5-27/5
  • 6/5-27/5
  • 4 total stops
  • 52h 30m total
  • Belfast to Southeast Asia
Search Deals
24/5
  • 24/5
  • 3 total stops
  • 30h 20m total
  • Belfast to Southeast Asia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 24 March 2026.
Use the filters below to find and compare flights from Belfast to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Wed 6/5

06:10-12:35

2 stops24h 25m

Bangkok Suvarnabhumi

Wed 27/5

22:35-20:40

2 stops28h 05m

£523

BelfastSingapore

BFS - SIN

BFSSIN

Belfast Intl

Tue 5/5

06:15-15:45

2 stops26h 30m

Singapore Changi

Tue 12/5

23:10-20:55

2 stops28h 45m

£536

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Thu 11/6

06:10-12:35

2 stops24h 25m

Bangkok Suvarnabhumi

Wed 8/7

22:35-20:40

2 stops28h 05m

£582

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Wed 6/5

07:30-12:10

3 stops46h 40m

Bangkok Suvarnabhumi

Wed 13/5

22:45-15:20

2 stops22h 35m

£593

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Sun 19/4

07:00-18:10

2 stops29h 10m

Bangkok Suvarnabhumi

Sat 25/4

03:15-23:25

2 stops26h 10m

£642

BelfastSingapore

BFS - SIN

BFSSIN

Belfast Intl

Mon 4/5

21:05-09:40

3 stops29h 35m

Singapore Changi

Mon 11/5

20:00-23:20

3 stops34h 20m

£654

BelfastSingapore

BFS - SIN

BFSSIN

Belfast Intl

Mon 4/5

16:10-09:40

3 stops34h 30m

Singapore Changi

Wed 20/5

03:15-07:50

3 stops35h 35m

£656

BelfastKuala Lumpur

BHD - KUL

BHDKUL

Belfast City

Tue 5/5

17:20-21:25

2 stops21h 05m

Kuala Lumpur Intl

Mon 11/5

02:05-16:50

2 stops21h 45m

£666

BelfastManila

BFS - MNL

BFSMNL

Belfast Intl

Wed 29/4

10:55-16:35

2 stops22h 40m

Manila Ninoy Aquino Intl

Tue 26/5

09:45-21:20

2 stops42h 35m

£691

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Mon 4/5

08:40-19:15

2 stops28h 35m

Bangkok Suvarnabhumi

Mon 11/5

20:15-23:20

3 stops33h 05m

£696

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Showing 1-10 of 44 resultsSorted by cheapest first
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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 £453). Flying from Belfast to Southeast Asia in July is currently the most expensive (average of £731). 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 24 March 2026.
Read through reviews of airlines operating flights from Belfast to Southeast Asia, such as KLM,Qatar Airways, andChina Southern. 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
7.8
Good
1,477 reviews
Check prices

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.3

Entertainment

7.1

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
7.8
Good
1,477 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.3

Entertainment

7.1

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
3,732 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.3

Entertainment

7.1

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
China Southern
7.4
Good
145 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.3

Entertainment

7.1

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
7,813 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.3

Entertainment

7.1

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 23h 05m. Fly via KLM, British Airways, or Qatar Airways to get the fastest option. The distance from Belfast to Southeast Asia is about 6920 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 City - 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 £453). Flying from Belfast to Southeast Asia in July is currently the most expensive (average of £731). 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 24 March 2026.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£453Average£487FlexibilityNo cancel feeOn-time69%
Search China Southern flights
British AirwaysCheapest£552Average£817FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£564Average£869FlexibilityNo cancel feeOn-time75%
Search KLM flights
Qatar AirwaysCheapest£860Average£1,180FlexibilityNo 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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