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

As of December 2025, there are 52 flights per day flying from London Heathrow Airport to Southeast Asia. The most common time of day flights depart is 21:00, with 64% of flights taking off in the evening.

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

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

Which airlines fly to Southeast Asia?

Thai Airways, Air China and Etihad Airways 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 36% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 41 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

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

As of December 2025, there are 367 flights per week flying from London Heathrow Airport to Southeast Asia. The most common day of the week flights depart is Sat, with 15% of flights taking off on this day.

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

As of December 2025, there are 44 operators available to choose from 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?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£246 Cheap Flights from London Heathrow Airport to Southeast Asia in 2025/26

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Find the cheapest flights from London Heathrow Airport to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

21:00 - 17:45

LHR

HAN

37h 45m1 stop

02:45 - 17:30

HAN

LHR

21h 45m1 stop

£367China Eastern

Wed, 14 Jan - Thu, 29 Jan

21:00 - 17:45

LHR

HAN

37h 45m1 stop

02:35 - 17:30

HAN

LHR

21h 55m2 stops

£389China Eastern

Wed, 14 Jan - Thu, 29 Jan

21:00 - 17:45

LHR

HAN

37h 45m1 stop

02:45 - 17:30

HAN

LHR

21h 45m1 stop

£390China Eastern

Thu, 29 Jan - Wed, 4 Feb

17:40 - 18:05

LHR

BKK

17h 25m1 stop

01:30 - 17:50

BKK

LHR

23h 20m1 stop

£439Air China

Thu, 5 Feb - Mon, 2 Mar

17:15 - 01:40

LHR

BKK

25h 25m2 stops

11:25 - 18:35

BKK

LHR

38h 10m1 stop

£439China Southern

Wed, 7 Jan - Fri, 6 Mar

22:40 - 00:40

LHR

SGN

20h 00m1 stop

05:10 - 20:15

SGN

LHR

45h 05m2 stops

£441Air China

Sat, 25 Apr - Fri, 15 May

22:00 - 11:25

LHR

BKK

30h 25m1 stop

02:10 - 17:55

BKK

LHR

22h 45m2 stops

£442China Southern

Wed, 11 Mar - Wed, 25 Mar

21:25 - 18:20

LHR

KUL

12h 55mdirect

09:15 - 15:25

KUL

LHR

14h 10mdirect

£496Malaysia Airlines

Fri, 6 Mar - Sun, 15 Mar

19:20 - 19:35

LHR

KUL

16h 15m1 stop

09:35 - 14:30

KUL

LHR

36h 55m1 stop

£498Etihad Airways

Wed, 28 Jan - Wed, 11 Mar

19:20 - 19:35

LHR

KUL

16h 15m1 stop

09:35 - 18:10

KUL

LHR

16h 35m1 stop

£501Etihad Airways

Tue, 17 Feb - Wed, 11 Mar

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

9 Jan

LHR22:00London Heathrow

33h 45m

1 stop

HAN14:45Hanoi Noibai

25 Jan

HAN20:20Hanoi Noibai

29h 15m

2 stops

LHR18:35London Heathrow

£429

Find similar

China Southern

7 Jan

LHR17:15London Heathrow

25h 25m

2 stops

BKK01:40Bangkok Suvarnabhumi

6 Mar

BKK11:25Bangkok Suvarnabhumi

38h 10m

1 stop

LHR18:35London Heathrow

£439

Find similar

China Southern

11 Mar

LHR22:00London Heathrow

30h 25m

1 stop

BKK11:25Bangkok Suvarnabhumi

25 Mar

BKK02:10Bangkok Suvarnabhumi

22h 45m

2 stops

LHR17:55London Heathrow

£442

Find similar

Air India flights from London Heathrow Airport to Southeast Asia

Our best Air India deals on London Heathrow Airport to Southeast Asia flight tickets

Air India

1 Mar

LHR13:00London Heathrow

23h 55m

1 stop

SGN19:55Ho Chi Minh City

31 Mar

SGN20:55Ho Chi Minh City

28h 05m

1 stop

LHR19:00London Heathrow

£439

Find similar

Air India

12 Jun

LHR20:35London Heathrow

17h 20m

1 stop

SGN19:55Ho Chi Minh City

23 Jun

SGN20:55Ho Chi Minh City

20h 35m

1 stop

LHR11:30London Heathrow

£445

Find similar

Air India

3 Mar

LHR08:45London Heathrow

28h 10m

1 stop

SGN19:55Ho Chi Minh City

31 Mar

SGN20:55Ho Chi Minh City

28h 05m

1 stop

LHR19:00London Heathrow

£450

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

Wed 14/1

21:00-17:45

1 stop37h 45m

Hanoi Noibai

Thu 29/1

02:45-17:30

1 stop21h 45m

£367

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Wed 14/1

21:00-17:45

1 stop37h 45m

Hanoi Noibai

Thu 29/1

02:35-17:30

2 stops21h 55m

£389

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Thu 29/1

21:00-17:45

1 stop37h 45m

Hanoi Noibai

Wed 4/2

02:45-17:30

1 stop21h 45m

£390

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 5/2

17:40-18:05

1 stop17h 25m

Bangkok Suvarnabhumi

Mon 2/3

01:30-17:50

1 stop23h 20m

£439

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 7/1

17:15-01:40

2 stops25h 25m

Bangkok Suvarnabhumi

Fri 6/3

11:25-18:35

1 stop38h 10m

£439

LondonHo Chi Minh City

LHR - SGN

LHRSGN

London Heathrow

Sat 25/4

22:40-00:40

1 stop20h 00m

Ho Chi Minh City

Fri 15/5

05:10-20:15

2 stops45h 05m

£441

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 11/3

22:00-11:25

1 stop30h 25m

Bangkok Suvarnabhumi

Wed 25/3

02:10-17:55

2 stops22h 45m

£442

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Fri 6/3

21:25-18:20

Nonstop12h 55m

Kuala Lumpur Intl

Sun 15/3

09:15-15:25

Nonstop14h 10m

£496

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Wed 28/1

19:20-19:35

1 stop16h 15m

Kuala Lumpur Intl

Wed 11/3

09:35-14:30

1 stop36h 55m

£498

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Tue 17/2

19:20-19:35

1 stop16h 15m

Kuala Lumpur Intl

Wed 11/3

09:35-18:10

1 stop16h 35m

£501

Flights are sorted by cheapest return 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 £609. If you are unable to visit Southeast Asia during the month of September, then departing from London Heathrow Airport during the month May is also very affordable. Most momondo users find prices during this month for around £615.

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

Our data shows that Tuesday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as £711. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Southeast Asia on Saturday is £752.

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

At midday 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 £647. Flying to Southeast Asia at midday 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 £737. 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 Ho Chi Minh City 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 £702 when searching weeks before you fly. 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 £654 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 20m
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 20m

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 are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Southeast Asia?
As of December 2025, there are 44 operators available to choose from 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?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable 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
Hainan Airlines	PriceFrom £363	Free Cancellation	Rating 8.3 58 reviews	Search Hainan Airlines flights
KLM	PriceFrom £417	Free Cancellation	Rating 7.7 1,430 reviews	Search KLM flights
Royal Brunei Airlines	PriceFrom £428	Free Cancellation	Rating 0.0 0 reviews	Search Royal Brunei Airlines flights
Lufthansa	PriceFrom £428	Free Cancellation	Rating 6.8 7,634 reviews	Search Lufthansa flights
SWISS	PriceFrom £434	Free Cancellation	Rating 7.5 1,814 reviews	Search SWISS flights
Austrian Airlines	PriceFrom £440	Free Cancellation	Rating 7.6 879 reviews	Search Austrian Airlines flights
Finnair	PriceFrom £453	Free Cancellation	Rating 7.6 1,338 reviews	Search Finnair flights
Norse Atlantic UK	PriceFrom £456	Free Cancellation	Rating 7.2 51 reviews	Search Norse Atlantic UK flights
Hahn Air	PriceFrom £481	Free Cancellation	Rating 0.0	Search Hahn Air flights
IndiGo	PriceFrom £512	Free Cancellation	Rating 6.8 510 reviews	Search IndiGo flights

Why use momondo?

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

Finding the right flight to Southeast Asia from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Southeast Asia quick and easy, saving you time and money.

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

Flights from London to Southeast Asia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between London and Southeast Asia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Southeast Asia from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Southeast Asia trip

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

Start using Trips

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Find better results for your trip to Southeast Asia

Popular Cities in Southeast Asia

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Flights to Copenhagenfrom £28

Cheap flights from London Heathrow Airport to Southeast Asia from £246

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Big names, great deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from London Heathrow Airport to Southeast Asia

Cheap return 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

Air India flights from London Heathrow Airport to Southeast Asia

Our best Air India 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 Ho Chi Minh City 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, China Eastern, and Air China are the most popular carriers operating from London Heathrow to Southeast Asia

Which airlines fly to Southeast Asia?

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

As of December 2025, there are 52 flights per day flying from London Heathrow Airport to Southeast Asia. The most common time of day flights depart is 21:00, with 64% of flights taking off in the evening.

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

As of December 2025, there are 367 flights per week flying from London Heathrow Airport to Southeast Asia. The most common day of the week flights depart is Sat, with 15% of flights 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, organise 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