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Cheap flights from Southeast Asia to London from £175

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Southeast Asia to London departing on 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

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China Eastern Logo
16:25 - 17:30CNX-LHR
32h 05m2 stops
China Eastern Logo
21:00 - 09:05LHR-CNX
29h 05m2 stops
£437China Eastern
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Thu, 11 Dec - Thu, 15 Jan
China Southern Logo
02:40 - 14:00SGN-LHR
18h 20m1 stop
China Southern Logo
22:00 - 22:10LHR-SGN
17h 10m1 stop
£445China Southern
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Sat, 15 Nov - Sun, 23 Nov
Etihad Airways Logo
10:10 - 18:10KUL-LHR
40h 00m2 stops
Etihad Airways Logo
08:50 - 19:35LHR-KUL
26h 45m1 stop
£468Etihad Airways
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Wed, 19 Nov - Sun, 23 Nov
Etihad Airways Logo
09:35 - 06:40KUL-LHR
29h 05m1 stop
Etihad Airways Logo
08:50 - 19:35LHR-KUL
26h 45m1 stop
£469Etihad Airways
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Sat, 15 Nov - Tue, 2 Dec
Qatar Airways Logo
10:15 - 19:50KUL-LHR
17h 35m1 stop
Qatar Airways Logo
08:35 - 14:40LHR-KUL
22h 05m1 stop
£509Qatar Airways
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Thu, 5 Feb - Thu, 12 Feb
SAUDIA Logo
15:20 - 07:30BKK-LHR
23h 10m1 stop
SAUDIA Logo
10:00 - 13:40LHR-BKK
20h 40m1 stop
£530SAUDIA
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Thu, 18 Dec - Wed, 28 Jan
SAUDIA Logo
15:20 - 07:30BKK-LHR
23h 10m1 stop
SAUDIA Logo
17:00 - 23:30LHR-BKK
23h 30m1 stop
£531SAUDIA
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Sun, 25 Jan - Sun, 8 Feb
Qatar Airways Logo
03:15 - 14:00SIN-LHR
18h 45m1 stop
Qatar Airways Logo
08:40 - 14:55LHR-SIN
22h 15m1 stop
£532Qatar Airways
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Sun, 23 Nov - Mon, 1 Dec
Cathay Pacific Logo
10:35 - 15:00CNX-LHR
35h 25m1 stop
Cathay Pacific Logo
20:15 - 09:50LHR-CNX
30h 35m1 stop
£684Cathay Pacific
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Thu, 5 Mar - Sun, 8 Mar
Cathay Pacific Logo
19:40 - 17:20CNX-LHR
28h 40m1 stop
Cathay Pacific Logo
20:15 - 09:50LHR-CNX
30h 35m1 stop
£685Cathay Pacific
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Thu, 5 Mar - Sun, 8 Mar

China Southern flights from Southeast Asia to London Heathrow Airport

Our best China Southern deals on Southeast Asia to London Heathrow Airport flight tickets
China Southern
15 Nov
SGN02:40Ho Chi Minh City
18h 20m
1 stop
LHR14:00London Heathrow
23 Nov
LHR22:00London Heathrow
17h 10m
1 stop
SGN22:10Ho Chi Minh City
£445
Find similar
China Southern
17 Nov
SGN11:55Ho Chi Minh City
37h 40m
1 stop
LHR18:35London Heathrow
23 Nov
LHR17:15London Heathrow
25h 25m
1 stop
SGN01:40Ho Chi Minh City
£446
Find similar
China Southern
19 Nov
SGN02:25Ho Chi Minh City
23h 10m
1 stop
LHR18:35London Heathrow
29 Nov
LHR21:30London Heathrow
45h 10m
2 stops
SGN01:40Ho Chi Minh City
£456
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Turkish Airlines flights from Southeast Asia to London Heathrow Airport

Our best Turkish Airlines deals on Southeast Asia to London Heathrow Airport flight tickets
Turkish Airlines
3 Dec
KUL10:05Kuala Lumpur Intl
19h 00m
1 stop
LHR21:05London Heathrow
10 Dec
LHR06:35London Heathrow
17h 50m
1 stop
KUL08:25Kuala Lumpur Intl
£455
Find similar
Turkish Airlines
2 Feb
KUL10:05Kuala Lumpur Intl
31h 50m
1 stop
LHR09:55London Heathrow
6 Feb
LHR22:35London Heathrow
49h 50m
1 stop
KUL08:25Kuala Lumpur Intl
£456
Find similar
Turkish Airlines
16 Jan
KUL10:05Kuala Lumpur Intl
19h 00m
1 stop
LHR21:05London Heathrow
19 Jan
LHR22:35London Heathrow
25h 50m
1 stop
KUL08:25Kuala Lumpur Intl
£460
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momondo Fare Finder

 
Customise your flight search to find flights from Southeast Asia to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 6 November 2025.
Use the filters below to find and compare flights from Southeast Asia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 11/12

16:25-17:30

2 stops32h 05m

London Heathrow

Thu 15/1

21:00-09:05

2 stops29h 05m

£437

Ho Chi Minh CityLondon

SGN - LHR

SGNLHR

Ho Chi Minh City

Sat 15/11

02:40-14:00

1 stop18h 20m

London Heathrow

Sun 23/11

22:00-22:10

1 stop17h 10m

£445

Kuala LumpurLondon

KUL - LHR

KULLHR

Kuala Lumpur Intl

Wed 19/11

10:10-18:10

2 stops40h 00m

London Heathrow

Sun 23/11

08:50-19:35

1 stop26h 45m

£468

Kuala LumpurLondon

KUL - LHR

KULLHR

Kuala Lumpur Intl

Sat 15/11

09:35-06:40

1 stop29h 05m

London Heathrow

Tue 2/12

08:50-19:35

1 stop26h 45m

£469

Kuala LumpurLondon

KUL - LHR

KULLHR

Kuala Lumpur Intl

Thu 5/2

10:15-19:50

1 stop17h 35m

London Heathrow

Thu 12/2

08:35-14:40

1 stop22h 05m

£509

BangkokLondon

BKK - LHR

BKKLHR

Bangkok Suvarnabhumi

Thu 18/12

15:20-07:30

1 stop23h 10m

London Heathrow

Wed 28/1

10:00-13:40

1 stop20h 40m

£530

BangkokLondon

BKK - LHR

BKKLHR

Bangkok Suvarnabhumi

Sun 25/1

15:20-07:30

1 stop23h 10m

London Heathrow

Sun 8/2

17:00-23:30

1 stop23h 30m

£531

SingaporeLondon

SIN - LHR

SINLHR

Singapore Changi

Sun 23/11

03:15-14:00

1 stop18h 45m

London Heathrow

Mon 1/12

08:40-14:55

1 stop22h 15m

£532

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 5/3

10:35-15:00

1 stop35h 25m

London Heathrow

Sun 8/3

20:15-09:50

1 stop30h 35m

£684

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 5/3

19:40-17:20

1 stop28h 40m

London Heathrow

Sun 8/3

20:15-09:50

1 stop30h 35m

£685

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Southeast Asia to London Heathrow Airport

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 London Heathrow Airport?

In general, November is the cheapest month to fly from Southeast Asia to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £690. The month of March is another great option to travel to London Heathrow Airport, with average flight prices from Southeast Asia averaging around £739.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Southeast Asia is on a Monday. momondo users have found tickets for Monday departures for as low as £776. However, this price may fluctuate depending on the airline, the season, and holidays. 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 London Heathrow Airport on Saturday is £837.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Southeast Asia to London Heathrow Airport in the afternoon for as low as £646. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £860 on average. Flights to London Heathrow Airport from Southeast Asia in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

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

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

You are more likely to see cheaper flights to London Heathrow Airport from Southeast Asia when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £779 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Southeast Asia for as low as £711 on momondo.

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

There are 4 cabin classes available to choose from on Southeast Asia to London Heathrow 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 Southeast Asia to London Heathrow Airport flights?

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

Cheap Southeast Asia to London Heathrow Airport flight deals and tips

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

Fastest flight time

13h 00m

Direct flights

Every day
The fastest flight from Southeast Asia to London Heathrow Airport takes 13h 00m
Direct flights go from Southeast Asia to London Heathrow Airport every day.
Search flight deals

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

    Prices for flights from Southeast Asia to London Heathrow Airport are refreshed on a daily basis.

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

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

    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 Southeast Asia to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport 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 license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. 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 Southeast Asia to London Heathrow Airport?

Best airlines flying from Southeast Asia to London Heathrow Airport

Compare and see reviews for airlines that fly from Southeast Asia to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
China SouthernPriceFrom £245Free CancellationRating
7.5
119 reviews
Search China Southern flights
LufthansaPriceFrom £285Free CancellationRating
6.8
7,555 reviews
Search Lufthansa flights
Air IndiaPriceFrom £358Free CancellationRating
5.5
2,941 reviews
Search Air India flights
Shenzhen AirlinesPriceFrom £453Free CancellationRating
7.5
20 reviews
Search Shenzhen Airlines flights
Austrian AirlinesPriceFrom £467Free CancellationRating
7.6
864 reviews
Search Austrian Airlines flights
Turkish AirlinesPriceFrom £468Free CancellationRating
7.3
4,031 reviews
Search Turkish Airlines flights
SWISSPriceFrom £504Free CancellationRating
7.5
1,778 reviews
Search SWISS flights
Gulf AirPriceFrom £504Free CancellationRating
7.2
217 reviews
Search Gulf Air flights
China EasternPriceFrom £506Free CancellationRating
7.2
174 reviews
Search China Eastern flights
Air ChinaPriceFrom £508Free CancellationRating
7.1
122 reviews
Search Air China flights

Travelling to a place near London?

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Poole
Guildford
Swanage
Dover
Colchester
Chelmsford
Hayes

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Southeast Asia to London . Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Southeast Asia to London.

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

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

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