Find flights
When to book
FAQs

Cheap flights from Northern Ireland to Southeast Asia from £337

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — BKK
6 Jul — 13 Jul1
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 6 June 2026.

Sat 3/1015:35
BFS
-
BKK
2 stops38h 30m
Multiple Airlines
Wed 4/1112:05
BKK
-
BFS
1 stop29h 00m
Multiple Airlines
Deal found 3/6£617
Wed 17/606:15
BFS
-
BKK
2 stops36h 55m
Multiple Airlines
Tue 23/605:05
BKK
-
BFS
2 stops35h 35m
Multiple Airlines
Deal found 3/6£620
Tue 3/1106:30
BFS
-
BKK
2 stops35h 25m
Multiple Airlines
Tue 17/1107:45
BKK
-
BFS
1 stop33h 20m
Multiple Airlines
Deal found 1/6£627
Sat 3/1015:35
BFS
-
BKK
2 stops38h 30m
Multiple Airlines
Thu 5/1116:25
BKK
-
BFS
1 stop23h 05m
Multiple Airlines
Deal found 3/6£628
Tue 3/1107:20
BHD
-
BKK
1 stop19h 45m
Multiple Airlines
Tue 17/1107:45
BKK
-
BHD
1 stop32h 50m
Multiple Airlines
Deal found 1/6£657
Sat 3/1006:20
BFS
-
HKT
2 stops43h 25m
Multiple Airlines
Wed 4/1108:20
HKT
-
BFS
2 stops32h 45m
Multiple Airlines
Deal found 3/6£695
Sat 3/1007:00
BHD
-
BKK
2 stops39h 05m
Multiple Airlines
Tue 3/1101:55
BKK
-
BHD
2 stops42h 40m
Multiple Airlines
Deal found 3/6£697
Sat 3/1007:00
BHD
-
BKK
2 stops24h 25m
Multiple Airlines
Thu 5/1118:55
BKK
-
BHD
2 stops32h 35m
Multiple Airlines
Deal found 3/6£713
Tue 8/917:30
BHD
-
BKK
1 stop34h 00m
KLM
Thu 17/912:05
BKK
-
BHD
1 stop34h 50m
KLM
Deal found 4/6£724
Thu 2/721:10
BFS
-
BKK
2 stops33h 25m
Multiple Airlines
Sun 5/722:35
BKK
-
BFS
2 stops27h 40m
Multiple Airlines
Deal found 5/6£726
Wed 9/917:30
BHD
-
BKK
1 stop34h 00m
KLM
Thu 17/912:05
BKK
-
BHD
1 stop27h 15m
KLM
Deal found 4/6£737
Mon 1/617:30
BHD
-
BKK
1 stop31h 55m
KLM
Thu 25/612:05
BKK
-
BHD
1 stop27h 15m
KLM
Deal found 1/6£758

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 6 June 2026.

Round-trip from

£617

One-way from

£337

Popular in

December

Cheapest in

May

Average price

£728
3/10-4/11
  • 3/10-4/11
  • 3 total stops
  • 67h 30m total
  • Northern Ireland to Southeast Asia
Search Deals
17/6
  • 17/6
  • 3 total stops
  • 30h 55m total
  • Northern Ireland to Southeast Asia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 6 June 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

Tue 3/11

20:55-14:25

1 stop34h 30m

Bangkok Suvarnabhumi

Tue 17/11

07:45-10:05

1 stop33h 20m

£639

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Sat 3/10

06:20-04:05

2 stops39h 45m

Bangkok Suvarnabhumi

Tue 3/11

01:55-10:05

2 stops39h 10m

£680

BelfastPhuket City

BFS - HKT

BFSHKT

Belfast Intl

Sat 3/10

06:20-07:45

2 stops43h 25m

Phuket City

Wed 4/11

08:20-10:05

2 stops32h 45m

£695

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Thu 2/7

21:10-12:35

2 stops33h 25m

Bangkok Suvarnabhumi

Sun 5/7

22:35-20:15

2 stops27h 40m

£726

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Wed 17/6

06:15-16:55

2 stops28h 40m

Bangkok Suvarnabhumi

Tue 23/6

08:00-15:15

3 stops37h 15m

£732

BelfastBangkok

BHD - BKK

BHDBKK

Belfast City

Sat 3/10

17:30-09:30

1 stop34h 00m

Bangkok Suvarnabhumi

Thu 5/11

12:05-09:10

1 stop28h 05m

£765

BelfastBangkok

BHD - BKK

BHDBKK

Belfast City

Sat 3/10

17:30-09:15

2 stops57h 45m

Bangkok Suvarnabhumi

Wed 4/11

12:05-16:50

1 stop35h 45m

£773

BelfastBangkok

BHD - BKK

BHDBKK

Belfast City

Sat 20/6

18:20-12:10

2 stops35h 50m

Bangkok Suvarnabhumi

Fri 26/6

03:15-09:45

2 stops36h 30m

£788

BelfastManila

BHD - MNL

BHDMNL

Belfast City

Mon 2/11

06:35-00:05

2 stops33h 30m

Manila Ninoy Aquino Intl

Fri 27/11

06:20-10:30

2 stops36h 10m

£813

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Thu 2/7

08:10-23:00

2 stops32h 50m

Bangkok Suvarnabhumi

Mon 6/7

13:50-10:00

2 stops26h 10m

£817

Flights are sorted by cheapest return flights first.

Deals found on 5/6

Showing 1-10 of 56 resultsSorted by cheapest first
1
2
3
...
6

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, January is the cheapest month in which you can book a flight from Northern Ireland to Southeast Asia (average of £451). Flying from Northern Ireland to Southeast Asia in February is currently the most expensive (average of £878). 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 77 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 KLM, Aer Lingus, and British Airways fly from Northern Ireland to Southeast Asia in about 30h 35m. The time it takes to get you to your destination can typically vary by up to 5h 15m. 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, January is the cheapest month in which you can book a flight from Northern Ireland to Southeast Asia (average of £451). Flying from Northern Ireland to Southeast Asia in February is currently the most expensive (average of £878). 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.

Alternative routes for Northern Ireland to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Suvarnabhumi flights
Gatwick to Suvarnabhumi flights
Stansted to Suvarnabhumi flights
Heathrow to Haneda flights
London City to Suvarnabhumi flights
Heathrow to New Delhi flights
Heathrow to Narita flights
Heathrow to Don Mueang Intl flights
Heathrow to Kuala Lumpur Intl flights
Heathrow to Hong Kong flights
Heathrow to Colombo flights
Gatwick to Haneda flights
Gatwick to Don Mueang Intl flights
Gatwick to Narita flights
Heathrow to Mumbai flights
Stansted to Narita flights
Manchester to Suvarnabhumi flights
Stansted to Haneda flights
Heathrow to Manila flights
Manchester to Islamabad flights
Luton to Suvarnabhumi flights
London City to Narita flights
Heathrow to Islamabad flights
Heathrow to Incheon Intl flights
Heathrow to Singapore flights
Heathrow to Bangalore flights
Gatwick to Kuala Lumpur Intl flights
Gatwick to Manila flights
London City to Haneda flights
Stansted to Manila flights
Stansted to New Delhi flights
Gatwick to New Delhi flights
Gatwick to Singapore flights
Heathrow to Denpasar flights
Heathrow to Hongqiao Intl flights
Gatwick to Islamabad flights
Manchester to Don Mueang Intl flights
Stansted to Islamabad flights
Stansted to Kuala Lumpur Intl flights
London City to Manila flights
Gatwick to Colombo flights
Gatwick to Hong Kong flights
Heathrow to Lahore flights
Heathrow to Dhaka flights
Stansted to Colombo flights
Gatwick to Mumbai flights
Heathrow to Taiwan Taoyuan Intl flights
Stansted to Hong Kong flights
Stansted to Mumbai flights
London City to Hong Kong 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 6 June 2026.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£452Average£731FlexibilityNo cancel feeOn-time69%
Search China Southern flights
KLMCheapest£634Average£949FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£673Average£843FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Qatar AirwaysCheapest£841Average£1,138FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.