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

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

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

The number of flights available between London and Southeast Asia is 317 per week as of April 2026. The most frequent departure day is Thu, with 15% of weekly flights leaving on this day.

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

45 flights are operational daily from London to Southeast Asia as of April 2026. The most popular departure time for this route is 22:00, with 64% of flights per day taking off in the evening.

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

Prices for flights from London to Southeast Asia refresh daily.

How old do you have to be to fly from London 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 to Southeast Asia.

What documentation or ID do you need to fly to Southeast Asia?

The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

€362 Cheap Flights from London to Southeast Asia in 2026

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Find the cheapest flights from London to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

22:05 - 18:45

LHR

KUL

37h 40m

1 stop

03:05 - 20:00

KUL

LHR

23h 55m

1 stop

€516Shenzhen Airlines

Mon, 28 Sep - Thu, 22 Oct

22:05 - 02:05

LHR

KUL

21h 00m

1 stop

19:45 - 19:50

KUL

LHR

31h 05m

1 stop

€521Shenzhen Airlines

Mon, 28 Sep - Fri, 23 Oct

20:25 - 23:00

LHR

KUL

19h 35m

1 stop

00:15 - 17:40

KUL

LHR

24h 25m

1 stop

€524Air China

Mon, 14 Sep - Wed, 21 Oct

20:25 - 23:00

LHR

KUL

19h 35m

1 stop

00:15 - 20:25

KUL

LHR

27h 10m

1 stop

€525Air China

Mon, 14 Sep - Wed, 21 Oct

14:40 - 00:35

LHR

KUL

26h 55m

1 stop

02:15 - 20:30

KUL

LHR

25h 15m

1 stop

€541SAUDIA

Mon, 4 May - Tue, 26 May

14:40 - 00:35

LHR

KUL

26h 55m

1 stop

02:15 - 12:40

KUL

LHR

17h 25m

1 stop

€542SAUDIA

Mon, 4 May - Tue, 26 May

20:40 - 09:40

LGW

SIN

30h 00m

2 stops

21:00 - 11:05

SIN

LGW

21h 05m

2 stops

€581Multiple Airlines

Mon, 25 May - Tue, 9 Jun

14:55 - 09:40

LGW

SIN

35h 45m

2 stops

20:00 - 06:55

SIN

LGW

17h 55m

1 stop

€586Multiple Airlines

Sun, 24 May - Tue, 9 Jun

18:00 - 17:00

LGW

SIN

40h 00m

1 stop

00:25 - 14:00

SIN

LGW

21h 35m

1 stop

€606China Eastern

Sat, 3 Oct - Sun, 25 Oct

21:20 - 22:00

LHR

HKT

18h 40m

1 stop

18:55 - 18:40

HKT

LHR

29h 45m

2 stops

€616China Eastern

Sun, 13 Sep - Tue, 13 Oct

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Shenzhen Airlines flights from London to Southeast Asia

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

Shenzhen Airlines

28 Sept

LHR22:05London Heathrow

37h 40m

1 stop

KUL18:45Kuala Lumpur Intl

22 Oct

KUL03:05Kuala Lumpur Intl

23h 55m

1 stop

LHR20:00London Heathrow

€516

Shenzhen Airlines

28 Sept

LHR22:05London Heathrow

21h 00m

1 stop

KUL02:05Kuala Lumpur Intl

23 Oct

KUL19:45Kuala Lumpur Intl

31h 05m

1 stop

LHR19:50London Heathrow

€521

Shenzhen Airlines

21 Sept

LHR22:05London Heathrow

37h 40m

1 stop

KUL18:45Kuala Lumpur Intl

15 Oct

KUL19:45Kuala Lumpur Intl

31h 15m

1 stop

LHR20:00London Heathrow

€546

Air China flights from London to Southeast Asia

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

Air China

14 Sept

LHR20:25London Heathrow

19h 35m

1 stop

KUL23:00Kuala Lumpur Intl

21 Oct

KUL00:15Kuala Lumpur Intl

24h 25m

1 stop

LHR17:40London Heathrow

€524

Air China

14 Sept

LHR20:25London Heathrow

19h 35m

1 stop

KUL23:00Kuala Lumpur Intl

21 Oct

KUL00:15Kuala Lumpur Intl

27h 10m

1 stop

LHR20:25London Heathrow

€525

Air China

14 Sept

LHR20:25London Heathrow

19h 35m

1 stop

KUL23:00Kuala Lumpur Intl

20 Oct

KUL00:15Kuala Lumpur Intl

24h 25m

1 stop

LHR17:40London Heathrow

€553

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Mon 28/9

22:05-18:45

1 stop37h 40m

Kuala Lumpur Intl

Thu 22/10

03:05-20:00

1 stop23h 55m

€516

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Mon 28/9

22:05-02:05

1 stop21h 00m

Kuala Lumpur Intl

Fri 23/10

19:45-19:50

1 stop31h 05m

€521

Fastest return journey

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Mon 14/9

20:25-23:00

1 stop19h 35m

Kuala Lumpur Intl

Wed 21/10

00:15-17:40

1 stop24h 25m

€524

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Mon 14/9

20:25-23:00

1 stop19h 35m

Kuala Lumpur Intl

Wed 21/10

00:15-20:25

1 stop27h 10m

€525

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Mon 4/5

14:40-00:35

1 stop26h 55m

Kuala Lumpur Intl

Tue 26/5

02:15-20:30

1 stop25h 15m

€541

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Mon 4/5

14:40-00:35

1 stop26h 55m

Kuala Lumpur Intl

Tue 26/5

02:15-12:40

1 stop17h 25m

€542

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Mon 25/5

20:40-09:40

2 stops30h 00m

Singapore Changi

Tue 9/6

21:00-11:05

2 stops21h 05m

€581

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sun 24/5

14:55-09:40

2 stops35h 45m

Singapore Changi

Tue 9/6

20:00-06:55

1 stop17h 55m

€586

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sat 3/10

18:00-17:00

1 stop40h 00m

Singapore Changi

Sun 25/10

00:25-14:00

1 stop21h 35m

€606

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Sun 13/9

21:20-22:00

1 stop18h 40m

Phuket City

Tue 13/10

18:55-18:40

2 stops29h 45m

€616

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 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 is in May. Flight prices, which tend to average around €597, are often lower during this time because this is during the off-season. If you’re not able to fly to Southeast Asia in May, then September is your next best option. Flight prices from London to Southeast Asia during September average around €615.

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

The cheapest day to depart from London to Southeast Asia is on a Monday. Travellers who choose to depart for Southeast Asia on a Monday will often find tickets for as low as €857. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around €1,153. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

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

Our most recent data shows that the best time of day to fly to Southeast Asia is in the evening. Flights from London to Southeast Asia during this time can be as low as €939. Flights to Southeast Asia are more costly in the morning, with an average ticket price of €1,136. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest London to Southeast Asia flight route?

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

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

You are more likely to see cheaper flights to Southeast Asia from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around €798 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 for as low as €754 on momondo.

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

There are 2 cabin classes available to choose from on London 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 to Southeast Asia flights?

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

Cheap London to Southeast Asia flight deals and tips

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

Fastest flight time	11h 55m
Direct flights	Every day
Airports in Southeast Asia	295 airports

The fastest flight from London to Southeast Asia takes 11h 55m

Direct flights go from London to Southeast Asia every day.

There are 295 airports in Southeast Asia. From London there are direct flights to Kuala Lumpur Intl (KUL), Singapore Changi (SIN).

Search flight deals

Frequently asked questions about flying from London to Southeast Asia

When did momondo last update prices for flights from London to Southeast Asia?
Prices for flights from London to Southeast Asia refresh daily.
How old do you have to be to fly from London 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 to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Southeast Asia?
Based on momondo bookings for flights between London and Southeast Asia, the leading plane model is Boeing 787-9 Dreamliner, making up 19.17% of the total bookings. Other popular models include Airbus A350-1000 with 15.07%, Boeing 777 with 11.99%, and Boeing 787-8 Dreamliner with 6.35%.

Best airlines flying from London to Southeast Asia

Compare and see reviews for airlines that fly from London to Southeast Asia with momondo

Airline	Rating	Free Cancellation	Price
Air China	PriceFrom €441	Free Cancellation	Rating 7.3 148 reviews		Search Air China flights

Why use momondo?

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

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

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

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

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?

Yes. momondo can track prices for London to Southeast Asia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.