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Cheap flights from Northern Ireland to Southeast Asia from £308

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — BKK
25 Aug — 1 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to Southeast Asia
Explore the most affordable flight options available from Northern Ireland to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 July 2026.

Wed 2/1207:55
BFS
-
BKK
2 stops36h 45m
Multiple Airlines
Wed 16/1209:20
BKK
-
BFS
1 stop30h 40m
Multiple Airlines
Deal found 22/7£500
Sun 20/916:25
BFS
-
SIN
3 stops41h 35m
Multiple Airlines
Thu 24/916:10
SIN
-
BFS
2 stops35h 25m
Multiple Airlines
Deal found 23/7£509
Mon 14/919:35
BFS
-
KUL
3 stops36h 15m
Multiple Airlines
Sun 20/922:40
KUL
-
BFS
2 stops26h 45m
Multiple Airlines
Deal found 25/7£536
Tue 8/906:15
BFS
-
HKT
2 stops29h 30m
Multiple Airlines
Tue 15/919:25
HKT
-
BFS
2 stops31h 40m
Multiple Airlines
Deal found 25/7£536
Thu 3/917:30
BFS
-
KUL
3 stops42h 45m
Multiple Airlines
Thu 10/922:00
KUL
-
BFS
1 stop28h 20m
Multiple Airlines
Deal found 23/7£549
Mon 7/921:05
BFS
-
BKK
3 stops39h 15m
Multiple Airlines
Wed 16/921:00
BKK
-
BFS
2 stops31h 25m
Multiple Airlines
Deal found 24/7£557
Wed 7/1005:55
BFS
-
KUL
3 stops44h 15m
Multiple Airlines
Thu 29/1017:25
KUL
-
BFS
2 stops33h 30m
Multiple Airlines
Deal found 24/7£564
Wed 23/920:10
BFS
-
HKT
3 stops43h 30m
Multiple Airlines
Mon 28/909:25
HKT
-
BFS
2 stops18h 05m
Multiple Airlines
Deal found 23/7£572
Thu 10/921:05
BFS
-
KUL
3 stops42h 55m
Multiple Airlines
Thu 17/910:20
KUL
-
BFS
2 stops28h 35m
Multiple Airlines
Deal found 25/7£576
Thu 10/910:15
BFS
-
BKK
2 stops26h 05m
Multiple Airlines
Sun 13/903:15
BKK
-
BFS
3 stops36h 45m
Multiple Airlines
Deal found 26/7£596
Wed 2/1216:45
BHD
-
BKK
2 stops29h 35m
Multiple Airlines
Wed 16/1209:20
BKK
-
BHD
1 stop17h 10m
Multiple Airlines
Deal found 22/7£599
Tue 15/920:10
BFS
-
DPS
3 stops44h 45m
Multiple Airlines
Sun 20/913:00
DPS
-
BFS
2 stops33h 20m
Multiple Airlines
Deal found 22/7£615

Find flight deals from Northern Ireland to Southeast Asia

Keep the following information in mind while searching for Northern Ireland to Southeast Asia flight deals. Data was last updated 26 July 2026.

Round-trip from

£500

One-way from

£308

Popular in

December

Cheapest in

September

Average price

£818
2/12-16/12
  • 2/12-16/12
  • 3 total stops
  • 67h 25m total
  • Northern Ireland to Southeast Asia
Search Deals
16/8
  • 16/8
  • 3 total stops
  • 49h 35m total
  • Northern Ireland to Southeast Asia
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£191 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (£57 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland 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 26 July 2026.
Use the filters below to find and compare flights from Northern Ireland 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 2/12

07:55-03:40

2 stops36h 45m

Bangkok Suvarnabhumi

Wed 16/12

09:20-09:00

1 stop30h 40m

£500

BelfastSingapore

BFS - SIN

BFSSIN

Belfast Intl

Sun 20/9

16:25-17:00

3 stops41h 35m

Singapore Changi

Thu 24/9

16:10-20:35

2 stops35h 25m

£509

BelfastKuala Lumpur

BFS - KUL

BFSKUL

Belfast Intl

Mon 14/9

19:35-14:50

3 stops36h 15m

Kuala Lumpur Intl

Sun 20/9

22:40-18:25

2 stops26h 45m

£536

BelfastPhuket City

BFS - HKT

BFSHKT

Belfast Intl

Tue 8/9

06:15-17:45

2 stops29h 30m

Phuket City

Tue 15/9

19:25-21:05

2 stops31h 40m

£536

BelfastKuala Lumpur

BFS - KUL

BFSKUL

Belfast Intl

Thu 3/9

17:30-19:15

3 stops42h 45m

Kuala Lumpur Intl

Thu 10/9

22:00-19:20

1 stop28h 20m

£549

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Mon 7/9

21:05-18:20

3 stops39h 15m

Bangkok Suvarnabhumi

Wed 16/9

21:00-22:25

2 stops31h 25m

£557

BelfastKuala Lumpur

BFS - KUL

BFSKUL

Belfast Intl

Wed 7/10

05:55-09:10

3 stops44h 15m

Kuala Lumpur Intl

Thu 29/10

17:25-18:55

2 stops33h 30m

£564

BelfastPhuket City

BFS - HKT

BFSHKT

Belfast Intl

Wed 23/9

20:10-21:40

3 stops43h 30m

Phuket City

Mon 28/9

09:25-21:30

2 stops18h 05m

£572

BelfastKuala Lumpur

BFS - KUL

BFSKUL

Belfast Intl

Thu 10/9

21:05-23:00

3 stops42h 55m

Kuala Lumpur Intl

Thu 17/9

10:20-07:55

2 stops28h 35m

£576

BelfastSingapore

BFS - SIN

BFSSIN

Belfast Intl

Wed 6/1

06:25-12:50

2 stops22h 25m

Singapore Changi

Tue 13/4

20:25-14:00

2 stops24h 35m

£609

Flights are sorted by cheapest return flights first.

Deals found on 22/7

Showing 1-10 of 48 resultsSorted by cheapest first
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Best time to book a flight from Northern Ireland to Southeast Asia

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

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

Currently, September is the cheapest month in which you can book a flight from Northern Ireland to Southeast Asia (average of £835). Flying from Northern Ireland to Southeast Asia in December is currently the most expensive (average of £1,552). 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.

How far ahead should I book a flight from Northern Ireland to Southeast Asia?

The price you pay for your flight from Northern Ireland to Southeast Asia may vary depending on when you book. For the best chance of a lower fare, look to book 85 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland 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 Northern Ireland to Southeast Asia?

    Airlines like British Airways and KLM fly from Northern Ireland to Southeast Asia in about 17h 25m. The time it takes to get you to your destination can typically vary by up to 45m. The distance between Northern Ireland and Southeast Asia is about 6087 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Northern Ireland 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 Northern Ireland to Southeast Asia?

    Currently, September is the cheapest month in which you can book a flight from Northern Ireland to Southeast Asia (average of £835). Flying from Northern Ireland to Southeast Asia in December is currently the most expensive (average of £1,552). 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

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Alternative routes for Northern Ireland to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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Manchester to Islamabad flights
Heathrow to Singapore flights
Heathrow to Islamabad flights
Heathrow to Incheon Intl flights
Stansted to Manila flights
Gatwick to Singapore flights
Heathrow to Hyderabad flights
London City to Narita flights
Manchester to Don Mueang Intl flights
Heathrow to Denpasar flights
Stansted to Colombo flights
Gatwick to Colombo flights
Gatwick to Islamabad flights
Stansted to Islamabad flights
Heathrow to Taiwan Taoyuan Intl flights
Gatwick to Kuala Lumpur Intl flights
London City to Manila flights
Heathrow to Bangalore flights
Stansted to Mumbai flights
Gatwick to Hong Kong flights
London City to Haneda flights
Gatwick to Denpasar flights
Gatwick to Mumbai flights
Heathrow to Chennai flights
Heathrow to Hongqiao Intl flights
Stansted to Kuala Lumpur Intl flights

Top 4 airlines flying from Northern Ireland to Southeast Asia

Discover the top 4 airlines that operate flights from Northern Ireland 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 26 July 2026.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£454Average£764FlexibilityNo cancel feeOn-time69%
Search China Southern flights
British AirwaysCheapest£659Average£805FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£661Average£953FlexibilityNo cancel feeOn-time75%
Search KLM flights
Qatar AirwaysCheapest£846Average£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 Northern Ireland to Southeast Asia?

When you search for this flight from Northern Ireland to Southeast Asia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Southeast Asia from Northern Ireland.

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

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

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Southeast Asia from Northern Ireland today and book when prices fit your budget.

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