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

As of September 2025, there are 53 flights per day flying from London Heathrow Airport to Southeast Asia. The most common time of day flights depart is 20:00, with 66% of flights taking off in the evening.

Which airlines fly to Southeast Asia?

Thai Airways, Air China and Qatar 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 34% 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.

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

Shenzhen Airlines, Hainan Airlines, and Air China 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 week?

As of September 2025, there are 376 flights per week flying from London Heathrow Airport to Southeast Asia. The most common day of the week flights depart is Mon, 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 September 2025, there are 42 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.

£253 Cheap Flights from London Heathrow Airport to Southeast Asia in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London Heathrow Airport to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap return flights

22:05 - 08:40LHR-HAN

28h 35m1 stop

15:05 - 20:00HAN-LHR

34h 55m1 stop

£382Shenzhen Airlines

Find Deal

Sat, 27 Sep - Thu, 16 Oct

20:25 - 12:00LHR-HAN

32h 35m1 stop

13:20 - 17:50HAN-LHR

35h 30m1 stop

£397Air China

Find Deal

Mon, 27 Oct - Mon, 17 Nov

20:25 - 12:00LHR-HAN

32h 35m1 stop

13:30 - 17:50HAN-LHR

35h 20m1 stop

£399Air China

Find Deal

Wed, 29 Oct - Wed, 5 Nov

22:00 - 22:10LHR-SGN

17h 10m1 stop

02:25 - 18:35SGN-LHR

23h 10m1 stop

£416China Southern

Find Deal

Sat, 7 Mar - Fri, 13 Mar

22:00 - 14:30LHR-BKK

33h 30m1 stop

08:20 - 18:35BKK-LHR

17h 15m1 stop

£436China Southern

Find Deal

Fri, 28 Nov - Fri, 26 Dec

20:55 - 09:40LHR-SIN

29h 45m1 stop

21:10 - 07:00SIN-LHR

16h 50m1 stop

£465Etihad Airways

Find Deal

Mon, 6 Oct - Mon, 20 Oct

21:45 - 19:50LHR-KUL

15h 05m1 stop

09:50 - 15:15KUL-LHR

36h 25m1 stop

£489Etihad Airways

Find Deal

Sun, 28 Sep - Wed, 15 Oct

21:25 - 12:10LHR-CEB

30h 45m1 stop

13:10 - 05:35CEB-LHR

24h 25m1 stop

£556Malaysia Airlines

Find Deal

Tue, 24 Feb - Thu, 19 Mar

21:25 - 12:10LHR-CEB

30h 45m1 stop

13:10 - 05:35CEB-LHR

24h 25m1 stop

£570Malaysia Airlines

Find Deal

Tue, 20 Jan - Tue, 10 Mar

14:15 - 20:10LHR-DPS

21h 55m2 stops

22:05 - 12:15DPS-LHR

22h 10m2 stops

£622SAUDIA

Find Deal

Thu, 5 Mar - Wed, 25 Mar

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

27 Sept

LHR22:05London Heathrow

28h 35m

1 stop

HAN08:40Hanoi Noibai

16 Oct

HAN15:05Hanoi Noibai

34h 55m

1 stop

LHR20:00London Heathrow

£382

Find similar

Shenzhen Airlines

24 Sept

LHR22:05London Heathrow

28h 35m

1 stop

HAN08:40Hanoi Noibai

11 Nov

HAN19:40Hanoi Noibai

30h 30m

1 stop

LHR19:10London Heathrow

£404

Find similar

Shenzhen Airlines

1 Oct

LHR22:05London Heathrow

34h 00m

1 stop

HAN14:05Hanoi Noibai

9 Oct

HAN15:05Hanoi Noibai

34h 55m

1 stop

LHR20:00London Heathrow

£409

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

21 Sept

LHR09:45London Heathrow

28h 10m

1 stop

SGN19:55Ho Chi Minh City

25 Sept

SGN20:55Ho Chi Minh City

28h 05m

1 stop

LHR19:00London Heathrow

£430

Find similar

Air India

22 Sept

LHR20:35London Heathrow

17h 50m

1 stop

BKK20:25Bangkok Suvarnabhumi

2 Oct

BKK08:40Bangkok Suvarnabhumi

16h 20m

1 stop

LHR19:00London Heathrow

£434

Find similar

Air India

5 Nov

LHR20:30London Heathrow

16h 05m

1 stop

BKK19:35Bangkok Suvarnabhumi

16 Nov

BKK14:45Bangkok Suvarnabhumi

27h 20m

1 stop

LHR11:05London Heathrow

£436

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

Sat 27/9

22:05-08:40

1 stop28h 35m

Hanoi Noibai

Thu 16/10

15:05-20:00

1 stop34h 55m

£382

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Mon 27/10

20:25-12:00

1 stop32h 35m

Hanoi Noibai

Mon 17/11

13:20-17:50

1 stop35h 30m

£397

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Wed 29/10

20:25-12:00

1 stop32h 35m

Hanoi Noibai

Wed 5/11

13:30-17:50

1 stop35h 20m

£399

LondonHo Chi Minh City

LHR - SGN

LHRSGN

London Heathrow

Sat 7/3

22:00-22:10

1 stop17h 10m

Ho Chi Minh City

Fri 13/3

02:25-18:35

1 stop23h 10m

£416

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 28/11

22:00-14:30

1 stop33h 30m

Bangkok Suvarnabhumi

Fri 26/12

08:20-18:35

1 stop17h 15m

£436

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 6/10

20:55-09:40

1 stop29h 45m

Singapore Changi

Mon 20/10

21:10-07:00

1 stop16h 50m

£465

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Sun 28/9

21:45-19:50

1 stop15h 05m

Kuala Lumpur Intl

Wed 15/10

09:50-15:15

1 stop36h 25m

£489

LondonCebu City

LHR - CEB

LHRCEB

London Heathrow

Tue 24/2

21:25-12:10

1 stop30h 45m

Cebu City Mactan Intl

Thu 19/3

13:10-05:35

1 stop24h 25m

£556

LondonCebu City

LHR - CEB

LHRCEB

London Heathrow

Tue 20/1

21:25-12:10

1 stop30h 45m

Cebu City Mactan Intl

Tue 10/3

13:10-05:35

1 stop24h 25m

£570

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

Thu 5/3

14:15-20:10

2 stops21h 55m

Denpasar Bali Ngurah Rai

Wed 25/3

22:05-12:15

2 stops22h 10m

£622

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 May is, on average, the cheapest month to fly to Southeast Asia from London Heathrow Airport, with most prices found around £608. If you are unable to visit Southeast Asia during the month of May, then departing from London Heathrow Airport during the month June is also very affordable. Most momondo users find prices during this month for around £612.

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

Our data shows that Wednesday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as £721. 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 £774.

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 £638. 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 £751. 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 £696 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 £640 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	1 airport

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 is 1 airport near Southeast Asia: 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 September 2025, there are 42 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 (19.03% of total bookings). The next most popular plane models are Airbus A350-1000 (17.32%), Boeing 777 (13.06%), and Boeing 777-300ER (6.99%).

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
Norse Atlantic UK	PriceFrom £345	Free Cancellation	Rating 7.1 49 reviews	Search Norse Atlantic UK flights
Hainan Airlines	PriceFrom £373	Free Cancellation	Rating 8.2 45 reviews	Search Hainan Airlines flights
KLM	PriceFrom £411	Free Cancellation	Rating 7.8 1,386 reviews	Search KLM flights
SWISS	PriceFrom £421	Free Cancellation	Rating 7.6 1,737 reviews	Search SWISS flights
Royal Brunei Airlines	PriceFrom £422	Free Cancellation	Rating 5.7 7 reviews	Search Royal Brunei Airlines flights
Lufthansa	PriceFrom £435	Free Cancellation	Rating 6.8 7,407 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom £449	Free Cancellation	Rating 7.6 850 reviews	Search Austrian Airlines flights
Finnair	PriceFrom £450	Free Cancellation	Rating 7.6 1,324 reviews	Search Finnair flights
A.P.G.	PriceFrom £529	Free Cancellation	Rating 0.0	Search A.P.G. flights
Royal Jordanian	PriceFrom £535	Free Cancellation	Rating 6.8 427 reviews	Search Royal Jordanian 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

Find my bookings

Get notified when prices go down

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

1 adult

Thu 16/10

Thu 23/10

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Southeast Asia

Popular Cities in Southeast Asia

Flights to Londonfrom £30

Flights to Bangkokfrom £330

Flights to New Yorkfrom £257

Flights to Dubaifrom £231

Flights to Manchesterfrom £30

Flights to Istanbulfrom £53

Flights to Jeddahfrom £128

Flights to Islamabadfrom £375

Flights to Manilafrom £338

Flights to New Delhifrom £335

Flights to Mumbaifrom £321

Flights to Lisbonfrom £41

Cheap flights from London Heathrow Airport to Southeast Asia from £253

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

Shenzhen Airlines flights from London Heathrow Airport to Southeast Asia

Our best Shenzhen Airlines 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

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

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, Hainan Airlines, 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 September 2025, there are 53 flights per day flying from London Heathrow Airport to Southeast Asia. The most common time of day flights depart is 20:00, with 66% of flights taking off in the evening.

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

As of September 2025, there are 376 flights per week flying from London Heathrow Airport to Southeast Asia. The most common day of the week flights depart is Mon, 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