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

Shenzhen Airlines, China Southern, and Hainan Airlines are the most popular carriers operating from London Heathrow 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 Heathrow Airport according to our data. Thai Airways is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 26 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

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 were last updated today.

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

The number of operators available for flights from London Heathrow Airport to Southeast Asia is 26 as of October 2025.

How old do you have to be to fly from London Heathrow Airport 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 layovers. It is recommended that you verify with the airline you are booking with for 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 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 license 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.

$341 Cheap Flights from London Heathrow Airport to Southeast Asia in 2025/26

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

353 flights are operational weekly from London Heathrow Airport to Southeast Asia as of October 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

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

As of October 2025, 50 flights take off from London Heathrow Airport and land in Southeast Asia each day. The most common flight departure time for this route is 9:00PM, with 65% of daily flights taking off in the evening.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London Heathrow Airport to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:40 pm - 11:55 amLHR-HAN

35h 15m1 stop

1:20 pm - 3:55 pmHAN-LHR

33h 35m1 stop

$525Air China

Find Deal

Thu, Nov 27 - Thu, Dec 4

5:40 pm - 12:00 pmLHR-HAN

35h 20m1 stop

1:30 pm - 5:50 pmHAN-LHR

35h 20m1 stop

$528Air China

Find Deal

Mon, Nov 17 - Fri, Dec 12

5:40 pm - 12:00 pmLHR-HAN

35h 20m1 stop

1:30 pm - 3:55 pmHAN-LHR

33h 25m1 stop

$529Air China

Find Deal

Mon, Nov 17 - Wed, Dec 10

5:15 pm - 1:05 amLHR-BKK

24h 50m2 stops

1:55 pm - 6:35 pmBKK-LHR

35h 40m1 stop

$607China Southern

Find Deal

Wed, Nov 12 - Wed, Nov 19

5:15 pm - 1:05 amLHR-BKK

24h 50m2 stops

2:10 am - 6:35 pmBKK-LHR

23h 25m1 stop

$608China Southern

Find Deal

Sun, Nov 16 - Mon, Nov 24

1:55 pm - 9:35 amLHR-SIN

35h 40m1 stop

7:25 pm - 6:40 amSIN-LHR

19h 15m1 stop

$608Etihad Airways

Find Deal

Wed, Nov 12 - Sun, Nov 16

8:55 pm - 9:35 amLHR-SIN

28h 40m1 stop

7:25 pm - 12:05 pmSIN-LHR

24h 40m1 stop

$609Etihad Airways

Find Deal

Mon, Nov 10 - Fri, Nov 14

9:10 am - 9:25 amLHR-RGN

17h 45m1 stop

10:25 am - 7:40 amRGN-LHR

27h 45m1 stop

$963Singapore Airlines

Find Deal

Tue, Feb 3 - Sun, Feb 15

9:10 am - 9:25 amLHR-RGN

17h 45m1 stop

10:25 am - 7:40 amRGN-LHR

27h 45m1 stop

$970Singapore Airlines

Find Deal

Tue, Feb 3 - Sun, Feb 15

9:35 pm - 6:00 pmLHR-RGN

13h 55m1 stop

7:00 pm - 7:35 pmRGN-LHR

31h 05m1 stop

$1,903Thai Airways

Find Deal

Sat, Dec 13 - Sat, Dec 20

China Southern flights from London Heathrow Airport to Southeast Asia

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

China Southern

Nov 12

LHR5:15 pmLondon Heathrow

24h 50m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Nov 19

BKK1:55 pmBangkok Suvarnabhumi

35h 40m

1 stop

LHR6:35 pmLondon Heathrow

$607

Find similar

China Southern

Nov 9

LHR10:00 pmLondon Heathrow

36h 05m

1 stop

BKK5:05 pmBangkok Suvarnabhumi

Dec 21

BKK6:05 pmBangkok Suvarnabhumi

31h 30m

1 stop

LHR6:35 pmLondon Heathrow

$608

Find similar

China Southern

Nov 9

LHR5:15 pmLondon Heathrow

33h 35m

2 stops

MNL10:50 amManila Ninoy Aquino Intl

Nov 23

MNL12:00 pmManila Ninoy Aquino Intl

38h 35m

1 stop

LHR6:35 pmLondon Heathrow

$609

Find similar

Austrian Airlines flights from London Heathrow Airport to Southeast Asia

Our best Austrian Airlines deals on London Heathrow Airport to Southeast Asia flight tickets

Austrian Airlines

Jan 19

LHR7:25 pmLondon Heathrow

33h 55m

1 stop

BKK12:20 pmBangkok Suvarnabhumi

Jan 21

BKK11:50 pmBangkok Suvarnabhumi

21h 15m

1 stop

LHR2:05 pmLondon Heathrow

$616

Find similar

Austrian Airlines

Jan 6

LHR7:25 pmLondon Heathrow

13h 05m

1 stop

BKK3:30 pmBangkok Suvarnabhumi

Jan 19

BKK2:00 pmBangkok Suvarnabhumi

14h 40m

1 stop

LHR9:40 pmLondon Heathrow

$618

Find similar

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

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Thu 11/27

5:40 pm-11:55 am

1 stop35h 15m

Hanoi Noibai

Thu 12/4

1:20 pm-3:55 pm

1 stop33h 35m

$525

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Mon 11/17

5:40 pm-12:00 pm

1 stop35h 20m

Hanoi Noibai

Fri 12/12

1:30 pm-5:50 pm

1 stop35h 20m

$528

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Mon 11/17

5:40 pm-12:00 pm

1 stop35h 20m

Hanoi Noibai

Wed 12/10

1:30 pm-3:55 pm

1 stop33h 25m

$529

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 11/12

5:15 pm-1:05 am

2 stops24h 50m

Bangkok Suvarnabhumi

Wed 11/19

1:55 pm-6:35 pm

1 stop35h 40m

$607

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 11/16

5:15 pm-1:05 am

2 stops24h 50m

Bangkok Suvarnabhumi

Mon 11/24

2:10 am-6:35 pm

1 stop23h 25m

$608

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 11/12

1:55 pm-9:35 am

1 stop35h 40m

Singapore Changi

Sun 11/16

7:25 pm-6:40 am

1 stop19h 15m

$608

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 11/10

8:55 pm-9:35 am

1 stop28h 40m

Singapore Changi

Fri 11/14

7:25 pm-12:05 pm

1 stop24h 40m

$609

LondonYangon

LHR - RGN

LHRRGN

London Heathrow

Tue 2/3

9:10 am-9:25 am

1 stop17h 45m

Yangon Mingaladon

Sun 2/15

10:25 am-7:40 am

1 stop27h 45m

$963

LondonYangon

LHR - RGN

LHRRGN

London Heathrow

Tue 2/3

9:10 am-9:25 am

1 stop17h 45m

Yangon Mingaladon

Sun 2/15

10:25 am-7:40 am

1 stop27h 45m

$970

LondonYangon

LHR - RGN

LHRRGN

London Heathrow

Sat 12/13

9:35 pm-6:00 pm

1 stop13h 55m

Yangon Mingaladon

Sat 12/20

7:00 pm-7:35 pm

1 stop31h 05m

$1,903

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 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 month of September is, on average, the cheapest month to fly to Southeast Asia from London Heathrow Airport, with most prices found around $819. If you don’t want to visit Southeast Asia in September, then you should wait until May to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $825.

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

The cheapest day to depart from London Heathrow Airport to Southeast Asia is on a Monday when prices can be found for as low as $983. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,073. 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 afternoon is the cheapest time of day to fly from London Heathrow Airport to Southeast Asia when you can find flight prices for as low as $798. Flying to Southeast Asia in the afternoon 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 $1,056. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 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 $944 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 Heathrow Airport for as low as $871 on momondo.

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

There are 4 cabin classes available to choose from on London Heathrow 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 20m
Direct flights	Mon, Tue, Thu and Sat
Airports in Southeast Asia	1 airport

The fastest flight from London Heathrow Airport to Southeast Asia takes 11h 20m

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

There is 1 airport near Southeast Asia: Hanoi Noibai (HAN)

Search flight deals

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 were last updated today.
How many operators does momondo search for flights from London Heathrow Airport to Southeast Asia?
The number of operators available for flights from London Heathrow Airport to Southeast Asia is 26 as of October 2025.
How old do you have to be to fly from London Heathrow Airport 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 layovers. It is recommended that you verify with the airline you are booking with for 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 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 license 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 Heathrow Airport to Southeast Asia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Southeast Asia is Boeing 787-9 Dreamliner (19.03% of total bookings). The next most popular plane models are Airbus A350-1000 (17.94%), Boeing 777 (11.88%), and Boeing 777-300ER (8.31%).

Best airlines flying from London Heathrow Airport to Southeast Asia

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

Airline	Rating	Free Cancellation	Price
SAUDIA	PriceFrom $407	Free Cancellation	Rating 7.4 638 reviews	Search SAUDIA flights
Shenzhen Airlines	PriceFrom $457	Free Cancellation	Rating 7.5 20 reviews	Search Shenzhen Airlines flights
Air India	PriceFrom $472	Free Cancellation	Rating 5.5 2,940 reviews	Search Air India flights
China Eastern	PriceFrom $533	Free Cancellation	Rating 7.2 174 reviews	Search China Eastern flights
China Southern	PriceFrom $557	Free Cancellation	Rating 7.4 117 reviews	Search China Southern flights
Hainan Airlines	PriceFrom $560	Free Cancellation	Rating 8.1 50 reviews	Search Hainan Airlines flights
British Airways	PriceFrom $620	Free Cancellation	Rating 6.7 7,488 reviews	Search British Airways flights
Gulf Air	PriceFrom $621	Free Cancellation	Rating 7.2 217 reviews	Search Gulf Air flights
Austrian Airlines	PriceFrom $641	Free Cancellation	Rating 7.6 862 reviews	Search Austrian Airlines flights
Oman Air	PriceFrom $683	Free Cancellation	Rating 8.2 99 reviews	Search Oman Air 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?

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?

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?

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

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 11/29

Sat 12/6

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Southeast Asia

Popular cities in Southeast Asia

Flights to New Yorkfrom $49

Flights to Londonfrom $32

Flights to Bangkokfrom $477

Flights to Tokyofrom $460

Flights to Los Angelesfrom $47

Flights to Parisfrom $338

Flights to Copenhagenfrom $348

Flights to Istanbulfrom $382

Flights to Manilafrom $521

Flights to Romefrom $312

Flights to Miamifrom $47

Flights to Chicagofrom $49

Cheap flights from London Heathrow Airport to Southeast Asia from $341

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 Heathrow Airport to Southeast Asia

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

China Southern flights from London Heathrow Airport to Southeast Asia

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

Austrian Airlines flights from London Heathrow Airport to Southeast Asia

Our best Austrian Airlines 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

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?

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 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 to Southeast Asia?

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

There are 4 cabin classes available to choose from on London Heathrow 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.

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

Shenzhen Airlines, China Southern, and Hainan Airlines are the most popular carriers operating from London Heathrow to Southeast Asia

What airlines fly to Southeast Asia?

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

As of October 2025, 50 flights take off from London Heathrow Airport and land in Southeast Asia each day. The most common flight departure time for this route is 9:00PM, with 65% of daily flights taking off in the evening.

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

353 flights are operational weekly from London Heathrow Airport to Southeast Asia as of October 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

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

Direct flights

Airports in Southeast Asia

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

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

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

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

What is the most popular plane model from London Heathrow Airport to Southeast Asia?

Best airlines flying from London Heathrow Airport to Southeast Asia

Compare and see reviews for airlines that fly from London Heathrow Airport 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