In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

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.

How far in advance should I book a flight from Belfast Intl Airport to Southeast Asia?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 48 days in advance, which can save you up to 2% on flights from Belfast Intl Airport to Southeast Asia compared to booking the week you need them. Waiting 48 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £561. For sooner than that we have options available in the next 3 days from £570.

What is the cheapest month to fly from Belfast Intl Airport to Southeast Asia?

August is one of the best times of the year to fly to Southeast Asia from Belfast Intl Airport. Prices for August average £750 per person but you can even find prices for as low as £552. The most expensive prices can be found in the month of December. Opting for a August flight can save you 41% on your journey compared to booking in December

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.

£287+ Flights from Belfast Intl Airport to Southeast Asia

Cheap flight deals from Belfast Intl to Southeast Asia

Round-trip from	£457
One-way from	£287
Popular in	December
Cheapest in	August
Average price	£610

10/11-27/11
6 total stops
79h 50m total
Belfast to Southeast Asia

Search Deals

8/10
3 total stops
58h 30m total
Belfast to Southeast Asia

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£60 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Belfast Intl to Southeast Asia

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 12 September 2025.

Mon 10/1109:00BFS - BKK

3 stops42h 05mMultiple Airlines

Thu 27/1101:35BKK - BFS

3 stops37h 45mMultiple Airlines

Deal found 12/9£457

Mon 10/1107:50BFS - BKK

2 stops24h 15mMultiple Airlines

Thu 27/1120:00BKK - BFS

1 stop21h 30mMultiple Airlines

Deal found 12/9£537

Sun 9/1114:45BFS - BKK

2 stops22h 40mMultiple Airlines

Thu 27/1120:00BKK - BFS

1 stop20h 45mMultiple Airlines

Deal found 12/9£547

Mon 22/907:15BFS - BKK

2 stops23h 05mMultiple Airlines

Tue 14/1000:40BKK - BFS

2 stops44h 35mMultiple Airlines

Deal found 10/9£559

Tue 4/1106:30BFS - BKK

2 stops28h 20mMultiple Airlines

Sat 22/1113:35BKK - BFS

2 stops32h 50mMultiple Airlines

Deal found 10/9£561

Mon 22/907:15BFS - BKK

2 stops23h 05mMultiple Airlines

Mon 1/1216:20BKK - BFS

2 stops27h 50mMultiple Airlines

Deal found 10/9£562

Mon 27/1007:50BFS - SIN

2 stops30h 20mMultiple Airlines

Mon 3/1116:15SIN - BFS

2 stops25h 50mMultiple Airlines

Deal found 12/9£571

Thu 9/1006:10BFS - BKK

3 stops34h 30mMultiple Airlines

Thu 16/1016:50BKK - BFS

2 stops31h 25mMultiple Airlines

Deal found 11/9£573

Sun 26/1005:45BFS - HKT

2 stops27h 45mMultiple Airlines

Sun 2/1114:00HKT - BFS

3 stops31h 55mMultiple Airlines

Deal found 11/9£631

Mon 15/910:05BFS - KUL

2 stops27h 50mMultiple Airlines

Sun 21/920:20KUL - BFS

2 stops26h 35mMultiple Airlines

Deal found 10/9£650

Sun 26/1023:05BFS - DPS

2 stops32h 50mMultiple Airlines

Sun 2/1111:10DPS - BFS

3 stops42h 45mMultiple Airlines

Deal found 11/9£679

Fri 7/1106:30BFS - HKT

2 stops32h 30mMultiple Airlines

Sun 30/1123:05HKT - BFS

2 stops28h 05mMultiple Airlines

Deal found 12/9£683

Best flights from Belfast Intl to Southeast Asia
Discover carefully curated flight deals from Belfast Intl to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.

Mon 10/1109:00BFS - BKK

3 stops42h 05mMultiple Airlines

Thu 27/1101:35BKK - BFS

3 stops37h 45mMultiple Airlines

Deal found 12/9£457

Tue 28/1005:45BFS - KUL

3 stops43h 00mMultiple Airlines

Tue 4/1111:10KUL - BFS

3 stops30h 55mMultiple Airlines

Deal found 12/9£523

Sun 9/1114:45BFS - BKK

2 stops22h 40mMultiple Airlines

Thu 27/1120:00BKK - BFS

1 stop20h 45mMultiple Airlines

Deal found 12/9£547

Mon 10/1122:20BFS - BKK

2 stops33h 45mMultiple Airlines

Thu 27/1120:00BKK - BFS

1 stop31h 25mMultiple Airlines

Deal found 10/9£551

Mon 22/907:15BFS - BKK

2 stops23h 05mMultiple Airlines

Tue 14/1000:40BKK - BFS

2 stops44h 35mMultiple Airlines

Deal found 10/9£559

Mon 27/1007:50BFS - SIN

2 stops30h 20mMultiple Airlines

Mon 3/1116:15SIN - BFS

2 stops25h 50mMultiple Airlines

Deal found 12/9£571

Tue 4/1105:45BFS - BKK

3 stops45h 45mMultiple Airlines

Sat 22/1105:05BKK - BFS

3 stops34h 20mMultiple Airlines

Deal found 10/9£579

Thu 13/1121:00BFS - BKK

2 stops24h 20mMultiple Airlines

Thu 27/1120:00BKK - BFS

1 stop20h 45mMultiple Airlines

Deal found 12/9£586

Sat 8/1123:10BFS - BKK

2 stops24h 35mMultiple Airlines

Thu 27/1120:00BKK - BFS

1 stop31h 25mMultiple Airlines

Deal found 10/9£593

Thu 9/1006:10BFS - BKK

3 stops34h 30mMultiple Airlines

Thu 16/1010:25BKK - BFS

3 stops36h 15mMultiple Airlines

Deal found 11/9£607

Sun 26/1005:45BFS - HKT

2 stops27h 45mMultiple Airlines

Sun 2/1114:00HKT - BFS

3 stops31h 55mMultiple Airlines

Deal found 11/9£631

Sun 26/1023:05BFS - DPS

2 stops32h 50mMultiple Airlines

Sun 2/1111:10DPS - BFS

3 stops42h 45mMultiple Airlines

Deal found 11/9£679

Last-minute flights from Belfast Intl to Southeast Asia
Discover last-minute flight deals from Belfast Intl to Southeast Asia. Data last updated 12 September 2025 and is based on user searches.

Mon 15/910:05BFS - KUL

2 stops27h 50mMultiple Airlines

Sun 21/920:20KUL - BFS

2 stops26h 35mMultiple Airlines

Deal found 10/9£650

Mon 22/907:15BFS - BKK

2 stops23h 05mMultiple Airlines

Wed 15/1013:50BKK - BFS

2 stops31h 25mMultiple Airlines

Deal found 10/9£559

Mon 22/907:15BFS - BKK

2 stops23h 05mMultiple Airlines

Mon 1/1216:20BKK - BFS

2 stops27h 50mMultiple Airlines

Deal found 10/9£562

Wed 8/1006:10BFS - BKK

3 stops34h 30mMultiple Airlines

Wed 15/1013:50BKK - BFS

2 stops31h 40mMultiple Airlines

Deal found 10/9£641

Thu 9/1006:10BFS - BKK

3 stops34h 30mMultiple Airlines

Thu 16/1016:50BKK - BFS

2 stops31h 25mMultiple Airlines

Deal found 11/9£573

Sat 25/1019:35BFS - MNL

3 stops38h 45mMultiple Airlines

Sat 1/1104:55MNL - BFS

3 stops35h 55mMultiple Airlines

Deal found 10/9£685

Sun 26/1005:45BFS - BKK

3 stops30h 15mMultiple Airlines

Sun 2/1122:50BKK - BFS

2 stops27h 05mMultiple Airlines

Deal found 11/9£628

Sun 26/1005:45BFS - HKT

2 stops27h 45mMultiple Airlines

Sun 2/1114:00HKT - BFS

3 stops31h 55mMultiple Airlines

Deal found 11/9£631

Sun 26/1023:05BFS - DPS

2 stops32h 50mMultiple Airlines

Sun 2/1111:10DPS - BFS

3 stops42h 45mMultiple Airlines

Deal found 11/9£679

Mon 27/1007:50BFS - SIN

2 stops30h 20mMultiple Airlines

Mon 3/1116:15SIN - BFS

2 stops25h 50mMultiple Airlines

Deal found 12/9£571

Mon 27/1020:55BFS - BKK

1 stop30h 30mMultiple Airlines

Mon 3/1112:30BKK - BFS

1 stop28h 35mMultiple Airlines

Deal found 12/9£644

Mon 27/1007:50BFS - DPS

2 stops24h 05mMultiple Airlines

Mon 3/1111:10DPS - BFS

3 stops42h 20mMultiple Airlines

Deal found 12/9£685

One-way flights from Belfast Intl to Southeast Asia
Search for one-way flight options from Belfast Intl to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 12 September 2025.

Wed 8/1006:10BFS - BKK

3 stops58h 30mMultiple Airlines

Deal found 10/9£287

Wed 17/906:10BFS - BKK

3 stops58h 30mMultiple Airlines

Deal found 11/9£295

Thu 18/921:10BFS - BKK

3 stops57h 55mMultiple Airlines

Deal found 11/9£296

Tue 30/1206:30BFS - SIN

3 stops50h 50mMultiple Airlines

Deal found 10/9£380

Mon 8/1222:20BFS - MNL

3 stops40h 20mMultiple Airlines

Deal found 11/9£381

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Mon 10/11

09:00-10:05

3 stops42h 05m

Bangkok Suvarnabhumi

Thu 27/11

01:35-08:20

3 stops37h 45m

£457

BelfastKuala Lumpur

BFS - KUL

BFSKUL

Belfast Intl

Tue 28/10

05:45-08:45

3 stops43h 00m

Kuala Lumpur Intl

Tue 4/11

11:10-10:05

3 stops30h 55m

£523

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Sun 9/11

14:45-20:25

2 stops22h 40m

Bangkok Suvarnabhumi

Thu 27/11

20:00-09:45

1 stop20h 45m

£547

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Mon 10/11

22:20-15:05

2 stops33h 45m

Bangkok Suvarnabhumi

Thu 27/11

20:00-20:25

1 stop31h 25m

£551

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Mon 22/9

07:15-12:20

2 stops23h 05m

Bangkok Suvarnabhumi

Tue 14/10

00:40-15:15

2 stops44h 35m

£559

BelfastSingapore

BFS - SIN

BFSSIN

Belfast Intl

Mon 27/10

07:50-22:10

2 stops30h 20m

Singapore Changi

Mon 3/11

16:15-10:05

2 stops25h 50m

£571

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Tue 4/11

05:45-10:30

3 stops45h 45m

Bangkok Suvarnabhumi

Sat 22/11

05:05-08:25

3 stops34h 20m

£579

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Thu 13/11

21:00-04:20

2 stops24h 20m

Bangkok Suvarnabhumi

Thu 27/11

20:00-09:45

1 stop20h 45m

£586

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Sat 8/11

23:10-06:45

2 stops24h 35m

Bangkok Suvarnabhumi

Thu 27/11

20:00-20:25

1 stop31h 25m

£593

BelfastBangkok

BFS - BKK

BFSBKK

Belfast Intl

Thu 9/10

06:10-22:40

3 stops34h 30m

Bangkok Suvarnabhumi

Thu 16/10

10:25-16:40

3 stops36h 15m

£607

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 23 results

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 £717). Flying from Belfast Intl Airport to Southeast Asia in December is currently the most expensive (average of £1,123). 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?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast Intl Airport to Southeast Asia as you normally would.

Reviews of airlines servicing Southeast Asia

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

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

KLM

7.8

Good

1,385 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Qatar Airways

7.4

Good

3,624 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

British Airways

6.7

Okay

7,361 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Related info for your journey

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 £717). Flying from Belfast Intl Airport to Southeast Asia in December is currently the most expensive (average of £1,123). 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

Alternative routes for Belfast Intl to Southeast Asia

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Complete your trip

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Direct flights to

Top 3 airlines flying from Belfast Intl to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£545	Average£811	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
KLM	Cheapest£557	Average£859	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Qatar Airways	Cheapest£813	Average£1,070	FlexibilityNo cancel fee	On-time68%	Search Qatar Airways flights

Fly with Cheapflights

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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Cheap flights from Belfast Intl Airport to Southeast Asia from £287

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

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 12 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Belfast Intl to Southeast Asia

Cheapest flights from Belfast Intl to Southeast AsiaExplore 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 12 September 2025.

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 12 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport to Southeast Asia that are best for you.

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.

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?

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 12 September 2025.

Reviews of airlines servicing Southeast Asia

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.

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?

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

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

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

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

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 Belfast Intl to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Belfast Intl to Southeast Asia

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 Intl to Southeast Asia?

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

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

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

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Travel Smart

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 12 September 2025.