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Cheap flights from London to Southeast Asia from $641

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Southeast Asia departing on 16/4. 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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Find the cheapest flights from London to Southeast Asia

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
17:05 - 18:45LCY-KUL
17h 40m2 stops
KLM Logo
23:50 - 08:10KUL-LCY
16h 20m1 stop
$975KLM
Find Deal
Tue, 11 Nov - Thu, 4 Dec
KLM Logo
17:05 - 15:40LCY-KUL
14h 35m1 stop
KLM Logo
23:50 - 07:15KUL-LCY
15h 25m1 stop
$1,011KLM
Find Deal
Tue, 11 Nov - Thu, 11 Dec
KLM Logo
17:05 - 18:45LCY-KUL
17h 40m2 stops
KLM Logo
23:50 - 09:30KUL-LCY
17h 40m1 stop
$1,022KLM
Find Deal
Tue, 18 Nov - Tue, 25 Nov
Multiple Airlines Logo
15:30 - 10:25STN-HKT
35h 55m2 stops
Multiple Airlines Logo
22:50 - 18:15HKT-STN
26h 25m3 stops
$1,147Multiple Airlines
Find Deal
Sat, 13 Dec - Sat, 20 Dec
Multiple Airlines Logo
15:30 - 10:25STN-HKT
35h 55m2 stops
Multiple Airlines Logo
03:10 - 22:35HKT-STN
26h 25m2 stops
$1,163Multiple Airlines
Find Deal
Sat, 13 Dec - Fri, 19 Dec
SWISS Logo
19:20 - 00:05LCY-DPS
21h 45m2 stops
SWISS Logo
13:05 - 12:30DPS-LCY
30h 25m3 stops
$1,262SWISS
Find Deal
Tue, 21 Apr - Wed, 27 May
SWISS Logo
19:10 - 11:05LCY-DPS
31h 55m2 stops
SWISS Logo
10:30 - 08:40DPS-LCY
30h 10m2 stops
$1,278SWISS
Find Deal
Thu, 5 Mar - Wed, 25 Mar
Turkish Airlines Logo
11:10 - 17:15STN-KUL
23h 05m1 stop
Turkish Airlines Logo
09:50 - 22:10KUL-STN
19h 20m1 stop
$1,342Turkish Airlines
Find Deal
Mon, 13 Apr - Mon, 27 Apr
Emirates Logo
20:15 - 12:05STN-HKT
32h 50m1 stop
Emirates Logo
19:55 - 18:45HKT-STN
28h 50m1 stop
$1,352Emirates
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Mon, 24 Nov - Tue, 31 Mar
Emirates Logo
20:15 - 19:40STN-HKT
16h 25m1 stop
Emirates Logo
19:55 - 18:45HKT-STN
28h 50m1 stop
$1,354Emirates
Find Deal
Mon, 24 Nov - Tue, 31 Mar

KLM flights from London to Southeast Asia

Our best KLM deals on London to Southeast Asia flight tickets
KLM
11 Nov
LCY17:05London City
17h 40m
2 stops
KUL18:45Kuala Lumpur Intl
4 Dec
KUL23:50Kuala Lumpur Intl
16h 20m
1 stop
LCY08:10London City
$975
Find similar
KLM
11 Nov
LCY17:05London City
14h 35m
1 stop
KUL15:40Kuala Lumpur Intl
11 Dec
KUL23:50Kuala Lumpur Intl
15h 25m
1 stop
LCY07:15London City
$1,011
Find similar
KLM
18 Nov
LCY17:05London City
17h 40m
2 stops
KUL18:45Kuala Lumpur Intl
25 Nov
KUL23:50Kuala Lumpur Intl
17h 40m
1 stop
LCY09:30London City
$1,022
Find similar

SWISS flights from London to Southeast Asia

Our best SWISS deals on London to Southeast Asia flight tickets
SWISS
21 Apr
LCY19:20London City
21h 45m
2 stops
DPS00:05Denpasar Bali Ngurah Rai
27 May
DPS13:05Denpasar Bali Ngurah Rai
30h 25m
3 stops
LCY12:30London City
$1,262
Find similar
SWISS
5 Mar
LCY19:10London City
31h 55m
2 stops
DPS11:05Denpasar Bali Ngurah Rai
25 Mar
DPS10:30Denpasar Bali Ngurah Rai
30h 10m
2 stops
LCY08:40London City
$1,278
Find similar
SWISS
16 Feb
LCY17:50London City
30h 25m
2 stops
KUL08:15Kuala Lumpur Intl
24 Feb
KUL20:30Kuala Lumpur Intl
24h 25m
2 stops
LCY12:55London City
$1,355
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London to Southeast Asia 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 78,305 searches. Data last updated 30 October 2025.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

Tue 11/11

17:05-18:45

2 stops17h 40m

Kuala Lumpur Intl

Thu 4/12

23:50-08:10

1 stop16h 20m

$975

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

Tue 11/11

17:05-15:40

1 stop14h 35m

Kuala Lumpur Intl

Thu 11/12

23:50-07:15

1 stop15h 25m

$1,011

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

Tue 18/11

17:05-18:45

2 stops17h 40m

Kuala Lumpur Intl

Tue 25/11

23:50-09:30

1 stop17h 40m

$1,022

LondonPhuket City

STN - HKT

STNHKT

London Stansted

Sat 13/12

15:30-10:25

2 stops35h 55m

Phuket City

Sat 20/12

22:50-18:15

3 stops26h 25m

$1,147

LondonPhuket City

STN - HKT

STNHKT

London Stansted

Sat 13/12

15:30-10:25

2 stops35h 55m

Phuket City

Fri 19/12

03:10-22:35

2 stops26h 25m

$1,163

LondonDenpasar

LCY - DPS

LCYDPS

London City

Tue 21/4

19:20-00:05

2 stops21h 45m

Denpasar Bali Ngurah Rai

Wed 27/5

13:05-12:30

3 stops30h 25m

$1,262

LondonDenpasar

LCY - DPS

LCYDPS

London City

Thu 5/3

19:10-11:05

2 stops31h 55m

Denpasar Bali Ngurah Rai

Wed 25/3

10:30-08:40

2 stops30h 10m

$1,278

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Mon 13/4

11:10-17:15

1 stop23h 05m

Kuala Lumpur Intl

Mon 27/4

09:50-22:10

1 stop19h 20m

$1,342

LondonPhuket City

STN - HKT

STNHKT

London Stansted

Mon 24/11

20:15-12:05

1 stop32h 50m

Phuket City

Tue 31/3

19:55-18:45

1 stop28h 50m

$1,352

LondonPhuket City

STN - HKT

STNHKT

London Stansted

Mon 24/11

20:15-19:40

1 stop16h 25m

Phuket City

Tue 31/3

19:55-18:45

1 stop28h 50m

$1,354

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Southeast Asia from

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

What is the cheapest month to fly to Southeast Asia?

The cheapest month to fly to Southeast Asia from London is in March. Flight prices, which tend to average around $854, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Southeast Asia, with average flight prices from London averaging around $1,360.

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 $1,423. On the other hand, Thursday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around $2,134.

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 to Southeast Asia when you can find flight prices for as low as $1,481. Flying to Southeast Asia in the morning is an ideal time because this is during off-peak travel hours. Flights in the evening are often more expensive, with an average ticket price of $1,677.

What is the cheapest London to Southeast Asia flight route?

Fly from London Gatwick to Bangkok Suvarnabhumi for the best London - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $1,659 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 $1,541 on momondo.

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

There are 4 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

Direct flights

None
There are no direct flights from London to Southeast Asia. There are no popular flight routes from London to Southeast Asia.
Search flight deals

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for 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?

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
Etihad AirwaysPriceFrom $1,072Free cancellationRating
7.4
1,282 reviews
Search Etihad Airways flights
Thai AirwaysPriceFrom $1,176Free cancellationRating
7.8
361 reviews
Search Thai Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Southeast Asia for you.

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

momondo does allow users to show only those flights to Southeast Asia from London which offer a flexible booking policy as well as other useful filters and features.

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?

Of course. momondo tracks the price of London to Southeast Asia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Southeast Asia trip

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