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Cheap flights from Belfast Intl Airport 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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — BKK
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Southeast Asia

Keep the following information in mind while searching for Belfast Intl to Southeast Asia flight deals. Data was last updated 21 November 2025.

Round-trip from

£538

One-way from

£310

Popular in

December

Cheapest in

May

Average price

£731
4/2-9/3
  • 4/2-9/3
  • 4 total stops
  • 48h 05m total
  • Belfast to Southeast Asia
Search Deals
17/1
  • 17/1
  • 3 total stops
  • 36h 45m total
  • Belfast to Southeast Asia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£50 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 November 2025
Search Deals

Find flight deals from Belfast Intl to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to Southeast Asia
Explore the most affordable flight options available from Belfast Intl to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 November 2025.

Wed 31/1207:55BFS - DPS
3 stops25h 55mMultiple Airlines
Fri 30/114:00DPS - BFS
3 stops33h 10mMultiple Airlines
Deal found 21/11£704
Sun 28/1205:45BFS - BKK
3 stops31h 25mMultiple Airlines
Wed 28/113:35BKK - BFS
2 stops27h 30mMultiple Airlines
Deal found 20/11£827
Sun 7/1206:30BFS - MNL
2 stops32h 10mMultiple Airlines
Tue 23/1222:00MNL - BFS
2 stops31h 40mMultiple Airlines
Deal found 20/11£841
Fri 19/1208:05BFS - HKT
3 stops28h 00mMultiple Airlines
Tue 30/1219:25HKT - BFS
3 stops31h 45mMultiple Airlines
Deal found 21/11£863
Fri 19/1209:55BFS - BKK
2 stops19h 25mMultiple Airlines
Tue 30/1218:20BKK - BFS
3 stops31h 30mMultiple Airlines
Deal found 21/11£952
Sat 27/1209:40BFS - DPS
3 stops30h 40mMultiple Airlines
Wed 7/115:55DPS - BFS
3 stops30h 10mMultiple Airlines
Deal found 19/11£1,360

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl 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 21 November 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Southeast Asia that are best for you.

Fly from

Belfast Intl

Fly to

Southeast Asia

Route

Depart

Return

Price

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Wed 4/2

18:25-19:50

3 stops42h 25m

Bangkok Suvarnabhumi

Tue 10/3

18:40-16:00

3 stops28h 20m

£542

BelfastDenpasar

BFS - DPS

BFSDPS

Belfast Intl

Tue 20/1

16:30-17:50

3 stops41h 20m

Denpasar Bali Ngurah Rai

Tue 27/1

18:50-20:15

3 stops33h 25m

£552

BelfastPhuket City

BFS - HKT

BFSHKT

Belfast Intl

Mon 11/5

06:10-22:00

2 stops33h 50m

Phuket City

Mon 25/5

00:20-09:55

2 stops39h 35m

£695

BelfastDenpasar

BFS - DPS

BFSDPS

Belfast Intl

Wed 31/12

07:55-17:50

3 stops25h 55m

Denpasar Bali Ngurah Rai

Fri 30/1

14:00-15:10

3 stops33h 10m

£704

BelfastDenpasar

BFS - DPS

BFSDPS

Belfast Intl

Fri 9/1

14:20-07:35

2 stops33h 15m

Denpasar Bali Ngurah Rai

Thu 15/1

20:05-21:35

3 stops33h 30m

£709

BelfastKuala Lumpur

BFS - KUL

BFSKUL

Belfast Intl

Sun 4/1

07:10-06:10

3 stops39h 00m

Kuala Lumpur Intl

Sun 11/1

09:35-18:55

3 stops41h 20m

£743

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Sun 28/12

05:45-20:10

3 stops31h 25m

Bangkok Suvarnabhumi

Wed 28/1

13:35-10:05

2 stops27h 30m

£827

BelfastManila

BFS - MNL

BFSMNL

Belfast Intl

Tue 6/1

08:35-01:20

3 stops32h 45m

Manila Ninoy Aquino Intl

Fri 16/1

08:35-08:25

3 stops31h 50m

£832

BelfastManila

BFS - MNL

BFSMNL

Belfast Intl

Sun 7/12

06:30-22:40

2 stops32h 10m

Manila Ninoy Aquino Intl

Tue 23/12

22:00-21:40

2 stops31h 40m

£841

BelfastPhuket City

BFS - HKT

BFSHKT

Belfast Intl

Fri 19/12

08:05-19:05

3 stops28h 00m

Phuket City

Tue 30/12

19:25-20:10

3 stops31h 45m

£863

Flights are sorted by cheapest return flights first.

Deals found on 21/11

Showing 1-10 of 18 results
1
2

Best time to book a flight from Belfast Intl to Southeast Asia

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

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

Currently, May is the cheapest month in which you can book a flight from Belfast Intl Airport to Southeast Asia (average of £562). Flying from Belfast Intl Airport to Southeast Asia in July is currently the most expensive (average of £759). 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.

What is the cheapest time of day to fly from BFS to YJX?

Find hourly flight availability from Belfast Intl to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 November 2025.

When flying from Belfast Intl Airport to Southeast Asia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 15% versus a flight in the morning.

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 21 November 2025.
See what other customers who have flown with KLM, Qatar Airways, andBritish Airways from Belfast Intl Airport to Southeast Asia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,419 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,419 reviews
KLM
7.7
Good
1,419 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Qatar Airways
7.4
Good
3,664 reviews
KLM
7.7
Good
1,419 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,534 reviews
KLM
7.7
Good
1,419 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from Belfast Intl 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 are the most popular routes from Belfast Intl Airport to Southeast Asia?

    When deciding which route to take from Belfast Intl Airport to Southeast Asia consider Belfast Intl - Bangkok Suvarnabhumi, Belfast Intl - Manila Ninoy Aquino Intl or Belfast Intl - Kuala Lumpur Intl as they are the most popular.

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Belfast Intl Airport to Southeast Asia (average of £562). Flying from Belfast Intl Airport to Southeast Asia in July is currently the most expensive (average of £759). 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 Belfast Intl to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Belfast Intl to Southeast Asia

Discover the top 3 airlines that operate flights from Belfast Intl 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 21 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£564Average£866FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£577Average£886FlexibilityNo cancel feeOn-time75%
Search KLM flights
Qatar AirwaysCheapest£830Average£1,163FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Belfast Intl to Southeast Asia?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Belfast Intl to Southeast Asia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Southeast Asia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast Intl to Southeast Asia.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Belfast Intl to Southeast Asia, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Belfast Intl 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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