Which airlines fly to Southeast Asia?

Thai Airways, Etihad Airways and Air China 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 32% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 43 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 January 2026, there are 325 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.

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

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

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

As of January 2026, there are 46 flights per day flying from London Heathrow Airport to Southeast Asia. The most common time of day flights depart is 20:00, with 59% of flights taking off in the evening.

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

As of January 2026, there are 45 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.

£254 Cheap Flights from London Heathrow Airport to Southeast Asia in 2026

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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.

19:45 - 22:10

LHR

HAN

19h 25m

1 stop

23:15 - 17:35

HAN

LHR

25h 20m

2 stops

£374Hainan Airlines

Wed, 4 Mar - Thu, 19 Mar

22:00 - 23:15

LHR

HAN

18h 15m

1 stop

08:15 - 18:35

HAN

LHR

17h 20m

1 stop

£377China Southern

Wed, 18 Feb - Sun, 8 Mar

22:00 - 23:15

LHR

HAN

18h 15m

1 stop

08:15 - 18:35

HAN

LHR

17h 20m

1 stop

£378China Southern

Wed, 18 Feb - Sat, 7 Mar

22:00 - 23:15

LHR

HAN

18h 15m

1 stop

08:15 - 18:35

HAN

LHR

17h 20m

1 stop

£379China Southern

Wed, 18 Feb - Thu, 5 Mar

17:40 - 18:05

LHR

BKK

17h 25m

1 stop

19:30 - 15:55

BKK

LHR

27h 25m

1 stop

£398Air China

Thu, 5 Mar - Sat, 14 Mar

22:40 - 18:20

LHR

BKK

37h 40m

1 stop

01:30 - 17:40

BKK

LHR

22h 10m

1 stop

£404Air China

Wed, 22 Apr - Wed, 13 May

17:50 - 18:35

LHR

SGN

17h 45m

1 stop

07:15 - 20:10

SGN

LHR

19h 55m

1 stop

£433Cathay Pacific

Thu, 19 Feb - Thu, 5 Mar

08:50 - 19:35

LHR

KUL

26h 45m

1 stop

09:35 - 06:40

KUL

LHR

29h 05m

1 stop

£505Etihad Airways

Tue, 17 Feb - Wed, 11 Mar

20:55 - 19:35

LHR

KUL

14h 40m

1 stop

09:35 - 06:40

KUL

LHR

29h 05m

1 stop

£505Etihad Airways

Tue, 10 Mar - Tue, 17 Mar

20:35 - 18:50

LHR

USM

16h 15m

1 stop

08:40 - 19:30

USM

LHR

16h 50m

1 stop

£731Singapore Airlines

Mon, 11 May - Sat, 16 May

China Eastern flights from London Heathrow Airport to Southeast Asia

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

China Eastern

18 Feb

LHR21:00London Heathrow

23h 20m

1 stop

HAN03:20Hanoi Noibai

4 Mar

HAN15:10Hanoi Noibai

33h 20m

1 stop

LHR17:30London Heathrow

£385

China Eastern

16 Mar

LHR21:00London Heathrow

35h 15m

2 stops

HAN15:15Hanoi Noibai

1 Apr

HAN17:30Hanoi Noibai

31h 10m

2 stops

LHR18:40London Heathrow

£386

China Eastern

4 Mar

LHR21:00London Heathrow

21h 45m

1 stop

HAN01:45Hanoi Noibai

10 Mar

HAN02:45Hanoi Noibai

21h 45m

1 stop

LHR17:30London Heathrow

£387

Shenzhen Airlines flights from London Heathrow Airport to Southeast Asia

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

Shenzhen Airlines

2 Feb

LHR21:10London Heathrow

22h 05m

1 stop

BKK02:15Bangkok Suvarnabhumi

8 Feb

BKK03:15Bangkok Suvarnabhumi

22h 55m

1 stop

LHR19:10London Heathrow

£422

Shenzhen Airlines

2 Feb

LHR21:10London Heathrow

22h 05m

1 stop

BKK02:15Bangkok Suvarnabhumi

8 Feb

BKK03:15Bangkok Suvarnabhumi

22h 55m

1 stop

LHR19:10London Heathrow

£429

Shenzhen Airlines

2 Feb

LHR21:10London Heathrow

22h 05m

1 stop

BKK02:15Bangkok Suvarnabhumi

8 Feb

BKK03:15Bangkok Suvarnabhumi

22h 55m

1 stop

LHR19:10London Heathrow

£443

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 4/3

19:45-22:10

1 stop19h 25m

Hanoi Noibai

Thu 19/3

23:15-17:35

2 stops25h 20m

£374

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Wed 18/2

22:00-23:15

1 stop18h 15m

Hanoi Noibai

Sun 8/3

08:15-18:35

1 stop17h 20m

£377

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Wed 18/2

22:00-23:15

1 stop18h 15m

Hanoi Noibai

Sat 7/3

08:15-18:35

1 stop17h 20m

£378

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Wed 18/2

22:00-23:15

1 stop18h 15m

Hanoi Noibai

Thu 5/3

08:15-18:35

1 stop17h 20m

£379

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 5/3

17:40-18:05

1 stop17h 25m

Bangkok Suvarnabhumi

Sat 14/3

19:30-15:55

1 stop27h 25m

£398

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 22/4

22:40-18:20

1 stop37h 40m

Bangkok Suvarnabhumi

Wed 13/5

01:30-17:40

1 stop22h 10m

£404

LondonHo Chi Minh City

LHR - SGN

LHRSGN

London Heathrow

Thu 19/2

17:50-18:35

1 stop17h 45m

Ho Chi Minh City

Thu 5/3

07:15-20:10

1 stop19h 55m

£433

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Tue 17/2

08:50-19:35

1 stop26h 45m

Kuala Lumpur Intl

Wed 11/3

09:35-06:40

1 stop29h 05m

£505

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Tue 10/3

20:55-19:35

1 stop14h 40m

Kuala Lumpur Intl

Tue 17/3

09:35-06:40

1 stop29h 05m

£505

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 11/5

20:35-18:50

1 stop16h 15m

Ko Samui

Sat 16/5

08:40-19:30

1 stop16h 50m

£731

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 £593. 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 £597.

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 £699. 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 £748.

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

In the morning 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 £708. Flying to Southeast Asia in the morning 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 £719. 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 £682 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 £637 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	Every day
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 every day.

There are 295 airports in Southeast Asia. From London Heathrow Airport there are direct flights to Bangkok Suvarnabhumi (BKK), 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 January 2026, there are 45 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 Airbus A350-1000 (20.31% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (19.40%), Boeing 777-300ER (10.27%), and Boeing 777 (8.66%).

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
Scandinavian Airlines	PriceFrom £277	Free Cancellation	Rating 7.3 1,672 reviews	Search Scandinavian Airlines flights
Norse Atlantic UK	PriceFrom £304	Free Cancellation	Rating 7.2 51 reviews	Search Norse Atlantic UK flights
China Airlines	PriceFrom £332	Free Cancellation	Rating 8.3 802 reviews	Search China Airlines flights
Hainan Airlines	PriceFrom £344	Free Cancellation	Rating 8.2 62 reviews	Search Hainan Airlines flights
ITA Airways	PriceFrom £357	Free Cancellation	Rating 6.7 1,133 reviews	Search ITA Airways flights
Royal Jordanian	PriceFrom £406	Free Cancellation	Rating 6.8 453 reviews	Search Royal Jordanian flights
SWISS	PriceFrom £415	Free Cancellation	Rating 7.6 1,863 reviews	Search SWISS flights
Royal Brunei Airlines	PriceFrom £418	Free Cancellation	Rating 0.0 0 reviews	Search Royal Brunei Airlines flights
Finnair	PriceFrom £444	Free Cancellation	Rating 7.6 1,356 reviews	Search Finnair flights
KLM	PriceFrom £484	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM 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

Flights to Londonfrom £28

Flights to Bangkokfrom £339

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Flights to Istanbulfrom £52

Flights to Manilafrom £387

Flights to Jeddahfrom £133

Flights to New Delhifrom £336

Flights to Copenhagenfrom £32

Flights to Mumbaifrom £286

Cheap flights from London Heathrow Airport to Southeast Asia from £254

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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 Eastern flights from London Heathrow Airport to Southeast Asia

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

Shenzhen Airlines flights from London Heathrow Airport to Southeast Asia

Our best Shenzhen 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 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?

SAUDIA, China Eastern, and Hainan Airlines 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 January 2026, there are 46 flights per day flying from London Heathrow Airport to Southeast Asia. The most common time of day flights depart is 20:00, with 59% of flights taking off in the evening.

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

As of January 2026, there are 325 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