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

China Eastern, Air China, and Hainan Airlines are the most popular carriers operating from London to Southeast Asia

What airlines fly to Southeast Asia?

Thai Airways, Air China and EVA Air are the top three most popular airlines that fly to Southeast Asia from London according to our data. Thai Airways is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 28 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

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

349 flights are operational weekly from London to Southeast Asia as of January 2026. The most popular departure day for this route is Tue, with 15% of flights per week taking off on this day.

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

As of January 2026, 49 flights take off from London and land in Southeast Asia each day. The most common flight departure time for this route is 9:00PM, with 58% of daily flights 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 are refreshed on a daily basis.

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

There are 28 operators available for flights from London to Southeast Asia as of January 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. 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 necessary travel and health documents for your Southeast Asia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$352 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 round-trip flights

Enter your travel dates to find the best prices.

9:00 pm - 4:45 am

LHR

BKK

24h 45m

1 stop

5:45 am - 5:30 pm

BKK

LHR

18h 45m

1 stop

$547China Eastern

Tue, Feb 17 - Tue, Mar 10

11:35 am - 10:15 pm

LGW

BKK

28h 40m

2 stops

9:55 pm - 3:10 pm

BKK

LGW

23h 15m

1 stop

$548China Eastern

Sat, May 2 - Sun, May 31

10:40 pm - 12:10 am

LHR

BKK

19h 30m

1 stop

1:30 am - 8:25 pm

BKK

LHR

24h 55m

1 stop

$548Air China

Sun, May 10 - Sat, May 16

10:40 pm - 12:10 am

LHR

BKK

19h 30m

1 stop

7:35 pm - 8:25 pm

BKK

LHR

30h 50m

1 stop

$549Air China

Sun, May 10 - Sun, May 17

10:00 pm - 3:05 pm

LHR

SGN

34h 05m

1 stop

1:10 pm - 6:35 pm

SGN

LHR

36h 25m

2 stops

$637China Southern

Wed, Mar 4 - Mon, Mar 16

9:10 pm - 2:00 am

LHR

SIN

20h 50m

1 stop

6:30 pm - 7:10 pm

SIN

LHR

32h 40m

1 stop

$656Shenzhen Airlines

Sat, Mar 7 - Sun, Mar 15

9:10 pm - 3:00 am

LHR

SIN

21h 50m

1 stop

6:30 pm - 7:10 pm

SIN

LHR

32h 40m

1 stop

$659Shenzhen Airlines

Fri, Mar 6 - Sun, Mar 15

9:00 pm - 10:35 am

LHR

MNL

30h 35m

2 stops

5:45 pm - 7:00 pm

MNL

LHR

32h 15m

1 stop

$670China Southern

Sat, Apr 11 - Sat, May 9

7:20 pm - 7:35 pm

LHR

KUL

16h 15m

1 stop

9:35 am - 6:10 pm

KUL

LHR

16h 35m

1 stop

$698Etihad Airways

Sun, Mar 1 - Mon, Mar 9

8:50 pm - 2:00 pm

LHR

LGK

34h 10m

2 stops

3:00 pm - 3:05 pm

LGK

LHR

55h 05m

2 stops

$842Etihad Airways

Thu, Apr 23 - Mon, May 4

China Southern flights from London to Southeast Asia

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

China Southern

Mar 7

LGW8:20 pmLondon Gatwick

22h 30m

1 stop

BKK1:50 amBangkok Suvarnabhumi

Mar 20

BKK3:00 amBangkok Suvarnabhumi

21h 20m

1 stop

LGW5:20 pmLondon Gatwick

$552

China Southern

Feb 3

LGW8:20 pmLondon Gatwick

22h 30m

1 stop

BKK1:50 amBangkok Suvarnabhumi

Mar 2

BKK3:00 amBangkok Suvarnabhumi

21h 20m

1 stop

LGW5:20 pmLondon Gatwick

$561

China Southern

Mar 10

LGW8:20 pmLondon Gatwick

22h 30m

1 stop

BKK1:50 amBangkok Suvarnabhumi

Mar 27

BKK12:30 amBangkok Suvarnabhumi

23h 50m

2 stops

LGW5:20 pmLondon Gatwick

$567

China Eastern flights from London to Southeast Asia

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

China Eastern

Feb 17

LHR9:00 pmLondon Heathrow

24h 45m

1 stop

BKK4:45 amBangkok Suvarnabhumi

Mar 10

BKK5:45 amBangkok Suvarnabhumi

18h 45m

1 stop

LHR5:30 pmLondon Heathrow

$547

China Eastern

Apr 21

LGW11:35 amLondon Gatwick

24h 30m

1 stop

BKK6:05 pmBangkok Suvarnabhumi

May 1

BKK8:50 pmBangkok Suvarnabhumi

49h 10m

2 stops

LGW4:00 pmLondon Gatwick

$548

China Eastern

Apr 21

LGW6:00 pmLondon Gatwick

18h 05m

1 stop

BKK6:05 pmBangkok Suvarnabhumi

May 4

BKK7:50 amBangkok Suvarnabhumi

28h 50m

2 stops

LGW6:40 amLondon Gatwick

$549

Fly from

Fly to

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 2/17

9:00 pm-4:45 am

1 stop24h 45m

Bangkok Suvarnabhumi

Tue 3/10

5:45 am-5:30 pm

1 stop18h 45m

$547

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sat 5/2

11:35 am-10:15 pm

2 stops28h 40m

Bangkok Suvarnabhumi

Sun 5/31

9:55 pm-3:10 pm

1 stop23h 15m

$548

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 5/10

10:40 pm-12:10 am

1 stop19h 30m

Bangkok Suvarnabhumi

Sat 5/16

1:30 am-8:25 pm

1 stop24h 55m

$548

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 5/10

10:40 pm-12:10 am

1 stop19h 30m

Bangkok Suvarnabhumi

Sun 5/17

7:35 pm-8:25 pm

1 stop30h 50m

$549

LondonHo Chi Minh City

LHR - SGN

LHRSGN

London Heathrow

Wed 3/4

10:00 pm-3:05 pm

1 stop34h 05m

Ho Chi Minh City

Mon 3/16

1:10 pm-6:35 pm

2 stops36h 25m

$637

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 3/7

9:10 pm-2:00 am

1 stop20h 50m

Singapore Changi

Sun 3/15

6:30 pm-7:10 pm

1 stop32h 40m

$656

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 3/6

9:10 pm-3:00 am

1 stop21h 50m

Singapore Changi

Sun 3/15

6:30 pm-7:10 pm

1 stop32h 40m

$659

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Sat 4/11

9:00 pm-10:35 am

2 stops30h 35m

Manila Ninoy Aquino Intl

Sat 5/9

5:45 pm-7:00 pm

1 stop32h 15m

$670

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Sun 3/1

7:20 pm-7:35 pm

1 stop16h 15m

Kuala Lumpur Intl

Mon 3/9

9:35 am-6:10 pm

1 stop16h 35m

$698

LondonLangkawi

LHR - LGK

LHRLGK

London Heathrow

Thu 4/23

8:50 pm-2:00 pm

2 stops34h 10m

Langkawi

Mon 5/4

3:00 pm-3:05 pm

2 stops55h 05m

$842

Flights are sorted by cheapest round-trip 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 month of May is, on average, the cheapest month to fly to Southeast Asia from London, with most prices found around $526. If you don’t want to visit Southeast Asia in May, then you should wait until September to fly from London, when ticket prices are also cheap, with an average price of $726.

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 when prices can be found for as low as $997. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,097. 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?

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 $1,002. Flying to Southeast Asia in the morning 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 $1,062. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $937 when searching weeks out. 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 $875 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

Fastest flight time	11h 15m
Direct flights	Mon, Tue, Thu and Sat
Airports in Southeast Asia	295 airports

The fastest flight from London to Southeast Asia takes 11h 15m

Direct flights go from London to Southeast Asia on Monday, Tuesday, Thursday and Saturday. There are no airlines offering direct flights.

There are 295 airports in Southeast Asia. From London there are direct flights to Bangkok Suvarnabhumi (BKK), Hanoi Noibai (HAN).

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 many operators does momondo search for flights from London to Southeast Asia?
There are 28 operators available for flights from London to Southeast Asia as of January 2026.
How old do you have to be to fly from London to Southeast Asia?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. 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 necessary travel and health documents for your Southeast Asia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 this flight route, the most popular plane model on flight routes from London to Southeast Asia is Boeing 787-9 Dreamliner (18.70% of total bookings). The next most popular plane models are Airbus A350-1000 (17.98%), Boeing 777-300ER (9.99%), and Boeing 777 (9.46%).

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
SAUDIA	PriceFrom $407	Free Cancellation	Rating 7.4 657 reviews	Search SAUDIA flights
Hainan Airlines	PriceFrom $434	Free Cancellation	Rating 8.2 62 reviews	Search Hainan Airlines flights
Air India	PriceFrom $472	Free Cancellation	Rating 5.5 2,978 reviews	Search Air India flights
China Eastern	PriceFrom $490	Free Cancellation	Rating 7.2 192 reviews	Search China Eastern flights
Shenzhen Airlines	PriceFrom $494	Free Cancellation	Rating 7.6 23 reviews	Search Shenzhen Airlines flights
Norse Atlantic UK	PriceFrom $496	Free Cancellation	Rating 7.2 51 reviews	Search Norse Atlantic UK flights
British Airways	PriceFrom $608	Free Cancellation	Rating 6.7 7,705 reviews	Search British Airways flights
Turkish Airlines	PriceFrom $639	Free Cancellation	Rating 7.3 4,208 reviews	Search Turkish Airlines flights
Austrian Airlines	PriceFrom $641	Free Cancellation	Rating 7.5 895 reviews	Search Austrian Airlines flights
Gulf Air	PriceFrom $645	Free Cancellation	Rating 7.2 224 reviews	Search Gulf Air flights

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. All flights to Southeast Asia from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential London to Southeast Asia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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.

An easier way to manage your Southeast Asia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

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Find better results for your trip to Southeast Asia

Popular cities in Southeast Asia

Flights to New Yorkfrom $38

Flights to Londonfrom $332

Flights to Bangkokfrom $507

Flights to Tokyofrom $377

Flights to Los Angelesfrom $31

Flights to Parisfrom $354

Flights to Copenhagenfrom $382

Flights to Istanbulfrom $481

Flights to Manilafrom $496

Flights to Romefrom $344

Flights to Miamifrom $49

Flights to Chicagofrom $56

Cheap flights from London to Southeast Asia from $352

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 2/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and 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 to Southeast Asia

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

China Southern flights from London to Southeast Asia

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

China Eastern flights from London to Southeast Asia

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

momondo Fare Finder

Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

See travel insights to Southeast Asia from

How to get the cheapest flight ticket from London to Southeast Asia

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 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?

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.

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

China Eastern, Air China, and Hainan Airlines are the most popular carriers operating from London to Southeast Asia

What airlines fly to Southeast Asia?

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

As of January 2026, 49 flights take off from London and land in Southeast Asia each day. The most common flight departure time for this route is 9:00PM, with 58% of daily flights taking off in the evening.

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

349 flights are operational weekly from London to Southeast Asia as of January 2026. The most popular departure day for this route is Tue, with 15% of flights per week taking off on this day.

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

Direct flights

Airports in Southeast Asia

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

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

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

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

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

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, organize 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