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

China Eastern, Gulf Air, and Etihad Airways 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?

The number of flights available between London Heathrow Airport and Southeast Asia is 373 per week as of July 2026. The most frequent departure day is Wed, with 15% of weekly flights leaving on this day.

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

As of July 2026, 53 flights take off from London Heathrow Airport and land in Southeast Asia each day. The most common flight departure time for this route is 22:00, with 70% of daily flights taking off in the evening.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 required for your trip to Southeast Asia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Southeast Asia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$524 Cheap Flights from London Heathrow Airport to Southeast Asia in 2026

Find the cheapest flights from London Heathrow Airport to Southeast Asia

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

21:20 - 01:10

LHR

BKK

21h 50m

2 stops

03:00 - 18:40

BKK

LHR

21h 40m

2 stops

$913China Eastern

Thu, 17 Sep - Tue, 13 Oct

21:20 - 14:55

LHR

BKK

35h 35m

3 stops

20:50 - 18:40

BKK

LHR

51h 50m

2 stops

$914China Eastern

Fri, 2 Oct - Sun, 11 Oct

22:05 - 11:10

LHR

BKK

31h 05m

1 stop

19:15 - 20:00

BKK

LHR

30h 45m

1 stop

$950Shenzhen Airlines

Sat, 29 Aug - Tue, 22 Sep

22:05 - 02:15

LHR

BKK

22h 10m

1 stop

19:15 - 19:50

BKK

LHR

30h 35m

1 stop

$953Shenzhen Airlines

Wed, 14 Oct - Fri, 23 Oct

14:45 - 12:30

LHR

HKT

15h 45m

1 stop

03:20 - 18:45

HKT

LHR

21h 25m

1 stop

$1,107Etihad Airways

Wed, 9 Sep - Sat, 12 Sep

14:45 - 12:30

LHR

HKT

15h 45m

1 stop

03:20 - 18:45

HKT

LHR

21h 25m

1 stop

$1,113Etihad Airways

Thu, 10 Sep - Tue, 15 Sep

16:25 - 16:35

LHR

SIN

17h 10m

1 stop

22:45 - 09:55

SIN

LHR

18h 10m

1 stop

$1,135Lufthansa

Mon, 14 Sep - Mon, 5 Oct

15:30 - 16:30

LHR

SIN

18h 00m

1 stop

22:45 - 09:05

SIN

LHR

17h 20m

1 stop

$1,136Lufthansa

Thu, 8 Oct - Sat, 24 Oct

19:25 - 16:10

LHR

SIN

13h 45mdirect

23:25 - 06:35

SIN

LHR

14h 10mdirect

$1,139British Airways

Mon, 28 Sep - Sun, 4 Oct

19:25 - 16:10

LHR

SIN

13h 45mdirect

23:25 - 06:35

SIN

LHR

14h 10mdirect

$1,145British Airways

Mon, 28 Sep - Wed, 7 Oct

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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

17 Sept

LHR21:20London Heathrow

21h 50m

2 stops

BKK01:10Bangkok Suvarnabhumi

13 Oct

BKK03:00Bangkok Suvarnabhumi

21h 40m

2 stops

LHR18:40London Heathrow

$913

China Eastern

2 Oct

LHR21:20London Heathrow

35h 35m

3 stops

BKK14:55Bangkok Suvarnabhumi

11 Oct

BKK20:50Bangkok Suvarnabhumi

51h 50m

2 stops

LHR18:40London Heathrow

$914

China Eastern

12 Nov

LHR21:00London Heathrow

34h 55m

2 stops

BKK14:55Bangkok Suvarnabhumi

14 Nov

BKK01:55Bangkok Suvarnabhumi

22h 35m

1 stop

LHR17:30London Heathrow

$924

Air China flights from London Heathrow Airport to Southeast Asia

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

Air China

8 Sept

LHR22:40London Heathrow

19h 30m

1 stop

BKK00:10Bangkok Suvarnabhumi

14 Sept

BKK01:30Bangkok Suvarnabhumi

24h 55m

1 stop

LHR20:25London Heathrow

$943

Air China

7 Sept

LHR20:25London Heathrow

21h 45m

1 stop

BKK00:10Bangkok Suvarnabhumi

11 Sept

BKK19:35Bangkok Suvarnabhumi

30h 50m

1 stop

LHR20:25London Heathrow

$984

Air China

7 Jan

LHR21:35London Heathrow

31h 55m

1 stop

BKK12:30Bangkok Suvarnabhumi

18 Jan

BKK19:30Bangkok Suvarnabhumi

29h 20m

1 stop

LHR17:50London Heathrow

$1,014

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

Cheapest return flight

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 17/9

21:20-01:10

2 stops21h 50m

Bangkok Suvarnabhumi

Tue 13/10

03:00-18:40

2 stops21h 40m

$913

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 2/10

21:20-14:55

3 stops35h 35m

Bangkok Suvarnabhumi

Sun 11/10

20:50-18:40

2 stops51h 50m

$914

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 29/8

22:05-11:10

1 stop31h 05m

Bangkok Suvarnabhumi

Tue 22/9

19:15-20:00

1 stop30h 45m

$950

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 14/10

22:05-02:15

1 stop22h 10m

Bangkok Suvarnabhumi

Fri 23/10

19:15-19:50

1 stop30h 35m

$953

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Wed 9/9

14:45-12:30

1 stop15h 45m

Phuket City

Sat 12/9

03:20-18:45

1 stop21h 25m

$1,107

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Thu 10/9

14:45-12:30

1 stop15h 45m

Phuket City

Tue 15/9

03:20-18:45

1 stop21h 25m

$1,113

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 14/9

16:25-16:35

1 stop17h 10m

Singapore Changi

Mon 5/10

22:45-09:55

1 stop18h 10m

$1,135

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 8/10

15:30-16:30

1 stop18h 00m

Singapore Changi

Sat 24/10

22:45-09:05

1 stop17h 20m

$1,136

Fastest return journey

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 28/9

19:25-16:10

Nonstop13h 45m

Singapore Changi

Sun 4/10

23:25-06:35

Nonstop14h 10m

$1,139

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 28/9

19:25-16:10

Nonstop13h 45m

Singapore Changi

Wed 7/10

23:25-06:35

Nonstop14h 10m

$1,145

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 cheapest month to fly to Southeast Asia from London Heathrow Airport is in November. Flight prices, which tend to average around $1,195, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Southeast Asia, with average flight prices from London Heathrow Airport averaging around $1,248.

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 from London Heathrow Airport 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 $1,555 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 $1,442 on momondo.

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

There are 3 cabin classes available to choose from on London Heathrow Airport 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 40m
Direct flights	Every day
Airports in Southeast Asia	294 airports

The fastest flight from London Heathrow Airport to Southeast Asia takes 11h 40m

Direct flights go from London Heathrow Airport to Southeast Asia every day.

There are 294 airports in Southeast Asia. From London Heathrow Airport there are direct flights to Bangkok Suvarnabhumi (BKK).

Search flight deals

Frequently asked questions about flying from London Heathrow Airport 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 are updated daily.
How old do you have to be to fly from London Heathrow Airport to Southeast Asia?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 required for your trip to Southeast Asia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Southeast Asia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London Heathrow Airport to Southeast Asia?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Southeast Asia is Boeing 787-9 Dreamliner, representing 23.36% of all bookings. The subsequent popular models are Airbus A350-1000 at 14.87%, Boeing 777 at 13.55%, and Boeing 787-8 Dreamliner at 9.19%.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Southeast Asia from London.

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

Yes. momondo enables you to select and highlight flights to Southeast Asia from London with this policy.

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

momondo provides multiple filters to help you find the best flight to Southeast Asia from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Southeast Asia from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from London Heathrow Airport to Southeast Asia from $524

Find the cheapest flights from London Heathrow Airport to Southeast Asia

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China Eastern flights from London Heathrow Airport to Southeast Asia

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

Air China flights from London Heathrow Airport to Southeast Asia

Our best Air China 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 London Heathrow to Southeast Asia flight route?

How far in advance should I book a flight from London Heathrow Airport to Southeast Asia?

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

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

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

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

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

Cheap London Heathrow Airport to Southeast Asia flight deals and tips

Fastest flight time

Direct flights

Airports in Southeast Asia

Frequently asked questions about flying from London Heathrow Airport to Southeast Asia

Why use momondo?

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

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

Fly your favourite airline to Southeast Asia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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