What airlines fly to Southeast Asia?

Thai Airways, Air China and EVA Air are the top three most popular airlines that fly to Southeast Asia from London Heathrow Airport according to our data. Thai Airways is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 25 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London Heathrow to Southeast Asia?

Shenzhen Airlines, SAUDIA, and Gulf Air are the most popular carriers operating from London Heathrow to Southeast Asia

When did momondo last update prices for flights from London Heathrow Airport to Southeast Asia?

Prices for flights from London Heathrow Airport to Southeast Asia were last updated today.

How many operators does momondo search for flights from London Heathrow Airport to Southeast Asia?

The number of operators available for flights from London Heathrow Airport to Southeast Asia is 26 as of December 2025.

How old do you have to be to fly from London Heathrow Airport to Southeast Asia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Southeast Asia.

What documentation or ID do you need to fly to Southeast Asia?

The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$331 Cheap Flights from London Heathrow Airport to Southeast Asia in 2025/26

Q: How many flights depart from London Heathrow Airport to Southeast Asia on average per day?

As of December 2025, 52 flights take off from London Heathrow Airport and land in Southeast Asia each day. The most common flight departure time for this route is 9:00PM, with 64% of daily flights taking off in the evening.

Q: How many flights depart from London Heathrow Airport to Southeast Asia on average per week?

367 flights are operational weekly from London Heathrow Airport to Southeast Asia as of December 2025. The most popular departure day for this route is Sat, with 15% of flights per week taking off on this day.

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Find the cheapest flights from London Heathrow Airport to Southeast Asia

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:00 pm - 5:45 pm

LHR

HAN

37h 45m1 stop

6:45 pm - 5:30 pm

HAN

LHR

29h 45m1 stop

$534China Eastern

Tue, Jan 13 - Tue, Jan 20

9:00 pm - 2:45 pm

LHR

HAN

34h 45m2 stops

6:45 pm - 5:30 pm

HAN

LHR

29h 45m1 stop

$535China Eastern

Tue, Jan 13 - Tue, Jan 20

9:00 pm - 2:45 pm

LHR

HAN

34h 45m2 stops

6:45 pm - 5:30 pm

HAN

LHR

29h 45m1 stop

$536China Eastern

Tue, Jan 13 - Tue, Jan 20

8:25 pm - 12:00 pm

LHR

HAN

32h 35m1 stop

1:20 pm - 5:50 pm

HAN

LHR

35h 30m1 stop

$551Air China

Mon, Jan 12 - Mon, Jan 19

5:40 pm - 12:00 pm

LHR

HAN

35h 20m1 stop

12:25 pm - 8:15 pm

HAN

LHR

38h 50m2 stops

$558Air China

Mon, Jan 12 - Mon, Jan 19

10:00 pm - 10:10 am

LHR

BKK

29h 10m1 stop

7:55 pm - 6:35 pm

BKK

LHR

29h 40m1 stop

$602China Southern

Wed, Feb 4 - Thu, Feb 12

10:00 pm - 2:05 pm

LHR

BKK

33h 05m1 stop

12:40 pm - 4:15 pm

BKK

LHR

33h 35m2 stops

$605China Southern

Sun, Feb 1 - Sat, Apr 4

8:50 am - 7:35 pm

LHR

KUL

26h 45m1 stop

9:35 am - 2:30 pm

KUL

LHR

36h 55m1 stop

$691Etihad Airways

Sun, Jan 25 - Sat, Jan 31

9:30 pm - 5:50 pm

LHR

KUL

13h 20mnonstop

10:50 pm - 5:25 am

KUL

LHR

13h 35mnonstop

$693British Airways

Sat, Apr 11 - Tue, May 5

1:55 pm - 2:00 pm

LHR

LGK

40h 05m2 stops

12:05 pm - 12:05 pm

LGK

LHR

56h 00m2 stops

$803Etihad Airways

Thu, Feb 5 - Tue, Feb 24

China Southern flights from London Heathrow Airport to Southeast Asia

Our best China Southern deals on London Heathrow Airport to Southeast Asia flight tickets

China Southern

Feb 4

LHR10:00 pmLondon Heathrow

29h 10m

1 stop

BKK10:10 amBangkok Suvarnabhumi

Feb 12

BKK7:55 pmBangkok Suvarnabhumi

29h 40m

1 stop

LHR6:35 pmLondon Heathrow

$602

Find similar

China Southern

Feb 1

LHR10:00 pmLondon Heathrow

33h 05m

1 stop

BKK2:05 pmBangkok Suvarnabhumi

Apr 4

BKK12:40 pmBangkok Suvarnabhumi

33h 35m

2 stops

LHR4:15 pmLondon Heathrow

$605

Find similar

China Southern

Mar 2

LHR7:35 pmLondon Heathrow

16h 20m

1 stop

BKK6:55 pmBangkok Suvarnabhumi

Mar 11

BKK2:40 amBangkok Suvarnabhumi

22h 15m

2 stops

LHR5:55 pmLondon Heathrow

$609

Find similar

Hainan Airlines flights from London Heathrow Airport to Southeast Asia

Our best Hainan Airlines deals on London Heathrow Airport to Southeast Asia flight tickets

Hainan Airlines

Feb 20

LHR9:00 pmLondon Heathrow

42h 10m

2 stops

HAN10:10 pmHanoi Noibai

Mar 1

HAN11:15 pmHanoi Noibai

25h 40m

2 stops

LHR5:55 pmLondon Heathrow

$549

Find similar

Hainan Airlines

Feb 2

LHR9:00 pmLondon Heathrow

30h 05m

2 stops

BKK10:05 amBangkok Suvarnabhumi

Feb 15

BKK1:35 amBangkok Suvarnabhumi

23h 20m

2 stops

LHR5:55 pmLondon Heathrow

$591

Find similar

Hainan Airlines

Mar 11

LHR7:45 pmLondon Heathrow

31h 20m

1 stop

BKK10:05 amBangkok Suvarnabhumi

May 7

BKK7:20 pmBangkok Suvarnabhumi

30h 10m

2 stops

LHR7:30 pmLondon Heathrow

$595

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Tue 1/13

9:00 pm-5:45 pm

1 stop37h 45m

Hanoi Noibai

Tue 1/20

6:45 pm-5:30 pm

1 stop29h 45m

$534

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Tue 1/13

9:00 pm-2:45 pm

2 stops34h 45m

Hanoi Noibai

Tue 1/20

6:45 pm-5:30 pm

1 stop29h 45m

$535

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Tue 1/13

9:00 pm-2:45 pm

2 stops34h 45m

Hanoi Noibai

Tue 1/20

6:45 pm-5:30 pm

1 stop29h 45m

$536

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Mon 1/12

8:25 pm-12:00 pm

1 stop32h 35m

Hanoi Noibai

Mon 1/19

1:20 pm-5:50 pm

1 stop35h 30m

$551

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Mon 1/12

5:40 pm-12:00 pm

1 stop35h 20m

Hanoi Noibai

Mon 1/19

12:25 pm-8:15 pm

2 stops38h 50m

$558

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 2/4

10:00 pm-10:10 am

1 stop29h 10m

Bangkok Suvarnabhumi

Thu 2/12

7:55 pm-6:35 pm

1 stop29h 40m

$602

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 2/1

10:00 pm-2:05 pm

1 stop33h 05m

Bangkok Suvarnabhumi

Sat 4/4

12:40 pm-4:15 pm

2 stops33h 35m

$605

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Sun 1/25

8:50 am-7:35 pm

1 stop26h 45m

Kuala Lumpur Intl

Sat 1/31

9:35 am-2:30 pm

1 stop36h 55m

$691

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Sat 4/11

9:30 pm-5:50 pm

Nonstop13h 20m

Kuala Lumpur Intl

Tue 5/5

10:50 pm-5:25 am

Nonstop13h 35m

$693

LondonLangkawi

LHR - LGK

LHRLGK

London Heathrow

Thu 2/5

1:55 pm-2:00 pm

2 stops40h 05m

Langkawi

Tue 2/24

12:05 pm-12:05 pm

2 stops56h 00m

$803

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Southeast Asia?

The month of September is, on average, the cheapest month to fly to Southeast Asia from London Heathrow Airport, with most prices found around $816. If you don’t want to visit Southeast Asia in September, then you should wait until May to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $825.

What is the cheapest day to depart on your flight to Southeast Asia?

The cheapest day to depart from London Heathrow Airport to Southeast Asia is on a Monday when prices can be found for as low as $973. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,054. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

What is the cheapest time of day to depart on your flight to Southeast Asia?

In the afternoon is the cheapest time of day to fly from London Heathrow Airport to Southeast Asia when you can find flight prices for as low as $798. Flying to Southeast Asia in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $1,049. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London Heathrow to Southeast Asia flight route?

Fly from London Heathrow to Singapore Changi for the best London Heathrow - Southeast Asia flight prices

How far in advance should I book a flight to Southeast Asia?

You are more likely to see cheaper flights to Southeast Asia from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $940 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from London Heathrow Airport for as low as $876 on momondo.

What cabin class options are available on London Heathrow to Southeast Asia flights?

There are 4 cabin classes available to choose from on London Heathrow to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London Heathrow Airport to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Southeast Asia.

Cheap London Heathrow Airport to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Southeast Asia

Fastest flight time	11h 25m
Direct flights	Mon, Tue, Thu and Sat
Airports in Southeast Asia	295 airports

The fastest flight from London Heathrow Airport to Southeast Asia takes 11h 25m

Direct flights go from London Heathrow Airport to Southeast Asia on Monday, Tuesday, Thursday and Saturday. There are no airlines offering direct flights.

There are 295 airports in Southeast Asia. From London Heathrow Airport there are direct flights to Hanoi Noibai (HAN).

Search flight deals

When did momondo last update prices for flights from London Heathrow Airport to Southeast Asia?
Prices for flights from London Heathrow Airport to Southeast Asia were last updated today.
How many operators does momondo search for flights from London Heathrow Airport to Southeast Asia?
The number of operators available for flights from London Heathrow Airport to Southeast Asia is 26 as of December 2025.
How old do you have to be to fly from London Heathrow Airport to Southeast Asia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Southeast Asia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Southeast Asia is Boeing 787-9 Dreamliner (20.04% of total bookings). The next most popular plane models are Airbus A350-1000 (18.49%), Boeing 777 (9.79%), and Boeing 777-300ER (8.33%).

Best airlines flying from London Heathrow Airport to Southeast Asia

Compare and see reviews for airlines that fly from London Heathrow Airport to Southeast Asia with momondo

Airline	Rating	Free Cancellation	Price
SAUDIA	PriceFrom $407	Free Cancellation	Rating 7.4 647 reviews	Search SAUDIA flights
Shenzhen Airlines	PriceFrom $457	Free Cancellation	Rating 7.6 22 reviews	Search Shenzhen Airlines flights
Gulf Air	PriceFrom $462	Free Cancellation	Rating 7.2 227 reviews	Search Gulf Air flights
Air India	PriceFrom $472	Free Cancellation	Rating 5.5 2,952 reviews	Search Air India flights
China Eastern	PriceFrom $539	Free Cancellation	Rating 7.2 178 reviews	Search China Eastern flights
China Southern	PriceFrom $559	Free Cancellation	Rating 7.5 122 reviews	Search China Southern flights
Hainan Airlines	PriceFrom $560	Free Cancellation	Rating 8.3 58 reviews	Search Hainan Airlines flights
British Airways	PriceFrom $620	Free Cancellation	Rating 6.7 7,583 reviews	Search British Airways flights
Austrian Airlines	PriceFrom $641	Free Cancellation	Rating 7.6 879 reviews	Search Austrian Airlines flights
Oman Air	PriceFrom $657	Free Cancellation	Rating 8.0 113 reviews	Search Oman Air flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Southeast Asia?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Southeast Asia for you.

Can I find flights from London to Southeast Asia with flexible booking policies on momondo?

All flight searches from London to Southeast Asia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Southeast Asia?

Once all potential London to Southeast Asia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Southeast Asia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Southeast Asia, momondo offers a useful price alert feature which will track prices for flights to Southeast Asia from London and alert you when they change.

An easier way to manage your Southeast Asia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Southeast Asia

Popular cities in Southeast Asia

Flights to New Yorkfrom $45

Flights to Londonfrom $355

Flights to Bangkokfrom $525

Flights to Tokyofrom $458

Flights to Los Angelesfrom $48

Flights to Parisfrom $339

Flights to Copenhagenfrom $361

Flights to Istanbulfrom $422

Flights to Manilafrom $521

Flights to Romefrom $321

Flights to Miamifrom $49

Flights to Chicagofrom $58

London Heathrow Airport flight routes

Flights from London Heathrow to New York John F Kennedy Intl

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Flights from London Heathrow to Los Angeles

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Flights from London Heathrow to Washington, D.C. Dulles Intl

Flights from London Heathrow to Boston Logan Intl

Cheap flights from London Heathrow Airport to Southeast Asia from $331

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Big names and deals

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Filter for what you want

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Find the cheapest flights from London Heathrow Airport to Southeast Asia

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

China Southern flights from London Heathrow Airport to Southeast Asia

Our best China Southern deals on London Heathrow Airport to Southeast Asia flight tickets

Hainan Airlines flights from London Heathrow Airport to Southeast Asia

Our best Hainan Airlines deals on London Heathrow Airport to Southeast Asia flight tickets

momondo Fare Finder

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

See travel insights to Southeast Asia from

How to get the cheapest flight ticket from London Heathrow Airport to Southeast Asia

What is the cheapest month to fly to Southeast Asia?

What is the cheapest day to depart on your flight to Southeast Asia?

What is the cheapest time of day to depart on your flight to Southeast Asia?

What is the cheapest London Heathrow to Southeast Asia flight route?

Fly from London Heathrow to Singapore Changi for the best London Heathrow - Southeast Asia flight prices

How far in advance should I book a flight to Southeast Asia?

What cabin class options are available on London Heathrow to Southeast Asia flights?

There are 4 cabin classes available to choose from on London Heathrow to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London Heathrow Airport to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Southeast Asia.

What is the cheapest airline that flies from London Heathrow to Southeast Asia?

Shenzhen Airlines, SAUDIA, and Gulf Air are the most popular carriers operating from London Heathrow to Southeast Asia

What airlines fly to Southeast Asia?

How many flights depart from London Heathrow Airport to Southeast Asia on average per day?

As of December 2025, 52 flights take off from London Heathrow Airport and land in Southeast Asia each day. The most common flight departure time for this route is 9:00PM, with 64% of daily flights taking off in the evening.

How many flights depart from London Heathrow Airport to Southeast Asia on average per week?

367 flights are operational weekly from London Heathrow Airport to Southeast Asia as of December 2025. The most popular departure day for this route is Sat, with 15% of flights per week taking off on this day.

Cheap London Heathrow Airport to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Southeast Asia

Fastest flight time

Direct flights

Airports in Southeast Asia

When did momondo last update prices for flights from London Heathrow Airport to Southeast Asia?

How many operators does momondo search for flights from London Heathrow Airport to Southeast Asia?

How old do you have to be to fly from London Heathrow Airport to Southeast Asia?

What documentation or ID do you need to fly to Southeast Asia?

What is the most popular plane model from London Heathrow Airport to Southeast Asia?

Best airlines flying from London Heathrow Airport to Southeast Asia

Compare and see reviews for airlines that fly from London Heathrow Airport to Southeast Asia with momondo

Why use momondo?

Why should I use momondo to find a flight deal from London to Southeast Asia?

Can I find flights from London to Southeast Asia with flexible booking policies on momondo?

How can momondo help me find flights from London to Southeast Asia?

I’m not ready to book a flight from London to Southeast Asia right now. Can momondo alert me if prices change?

An easier way to manage your Southeast Asia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Southeast Asia

Popular cities in Southeast Asia

Popular flights according to clicks in the last 7 days on momondo