What are the cheapest airlines to fly from London Heathrow Airport to Southeast Asia one-way?

To fly one-way, consider booking your trip with Air China, which is currently one of the cheapest options available, starting at $602. Etihad Airways flights start at $650 while deals on SAUDIA start at $652 one-way. Find deals

What are the most popular routes from London Heathrow Airport to Southeast Asia?

The most popular route from London Heathrow Airport to Southeast Asia is London Heathrow - Kuala Lumpur Intl. You may also consider London Heathrow - Singapore Changi or London Heathrow - Bangkok Suvarnabhumi.

What are the cheapest flights from London Heathrow Airport to Southeast Asia?

Looking at all options, your cheapest flight can be booked for $873. While the most popular route (London Heathrow - Kuala Lumpur Intl) can be booked for $717 on average our data indicates $2,792 when flying from London Heathrow Airport to Southeast Asia.

What are the most reliable airlines from London Heathrow Airport to Southeast Asia?

Consider Air Canada (71%), Thai Airways (67%) or EVA Air (62%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Southeast Asia.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 56 days in advance, which can save you up to 44% on flights from London Heathrow Airport to Southeast Asia compared to booking the week you need them. Waiting 56 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $1,265. For sooner than that we have options available in the next 3 days from $1,475.

What is the cheapest month to fly from London Heathrow Airport to Southeast Asia?

May can be a great time to fly to Southeast Asia from London Heathrow Airport with a flight ticket averaging about $1,376. Cheapflights users have found deals in the month of May for as cheap as $606. The most expensive prices can be found in the month of December.

Can I find deals for flights from Heathrow to Southeast Asia that include hotel bookings?

Yes. In addition to deals on Heathrow to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Heathrow to Southeast Asia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Southeast Asia.

Can I find deals for business class flights from Heathrow to Southeast Asia?

Yes. Cheapflights offers flight deals from Heathrow to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$602+ Flights from London Heathrow Airport to Southeast Asia

Cheap flight deals from Heathrow to Southeast Asia

Round-trip from	$924
One-way from	$602
Popular in	December
Cheapest in	May
Average price	$1,446

Shenzhen Airlines
23/4-8/5
2 total stops
60h 00m total
London to Southeast Asia

Search Deals

Air China
15/4
2 total stops
22h 30m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($192 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($74 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Heathrow to Southeast Asia

Cheapest flights from Heathrow to Southeast Asia
Explore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 April 2025.

Fri 14/1121:10LHR - BKK

1 stop31h 00mShenzhen Airlines

Sat 22/1103:05BKK - LHR

1 stop23h 05mShenzhen Airlines

Deal found 1/4$922

Sat 3/517:50LHR - BKK

2 stops37h 55mSAUDIA

Mon 12/515:25BKK - LHR

2 stops28h 50mSAUDIA

Deal found 31/3$927

Sun 4/521:20LHR - BKK

1 stop18h 35mChina Eastern

Mon 12/502:10BKK - LHR

1 stop22h 30mChina Eastern

Deal found 31/3$943

Mon 9/614:40LHR - KUL

1 stop26h 55mSAUDIA

Fri 5/917:35KUL - LHR

2 stops27h 40mSAUDIA

Deal found 31/3$978

Sun 4/522:10LHR - BKK

1 stop37h 45mChina Southern

Mon 12/503:00BKK - LHR

2 stops21h 05mChina Southern

Deal found 31/3$981

Wed 7/522:00LHR - BKK

1 stop30h 00mHainan Airlines

Thu 22/501:30BKK - LHR

2 stops24h 00mHainan Airlines

Deal found 31/3$984

Tue 13/509:30LHR - SIN

1 stop17h 10mEtihad Airways

Tue 20/521:10SIN - LHR

1 stop16h 50mEtihad Airways

Deal found 31/3$997

Sat 10/522:00LHR - KUL

1 stop36h 45mAir China

Tue 13/500:10KUL - LHR

1 stop27h 20mAir China

Deal found 31/3$1,005

Thu 8/520:25LHR - BKK

2 stops24h 45mAir China

Fri 16/501:30BKK - LHR

1 stop22h 15mAir China

Deal found 31/3$1,005

Thu 15/522:10LHR - SIN

1 stop82h 35mSAUDIA

Wed 21/503:45SIN - LHR

1 stop23h 45mSAUDIA

Deal found 31/3$1,018

Wed 25/622:05LHR - KUL

1 stop38h 10mShenzhen Airlines

Wed 9/704:20KUL - LHR

1 stop22h 40mShenzhen Airlines

Deal found 31/3$1,050

Thu 27/1116:40LHR - SIN

1 stop16h 25mLufthansa

Thu 15/123:45SIN - LHR

1 stop16h 20mLufthansa

Deal found 31/3$1,051

Best flights from Heathrow to Southeast Asia
Discover carefully curated flight deals from Heathrow to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 April 2025.

Wed 23/422:05LHR - BKK

1 stop22h 10mShenzhen Airlines

Thu 8/512:10BKK - LHR

1 stop37h 50mShenzhen Airlines

Deal found 31/3$924

Sat 3/517:50LHR - BKK

2 stops37h 55mSAUDIA

Mon 12/515:25BKK - LHR

2 stops28h 50mSAUDIA

Deal found 31/3$927

Wed 14/521:20LHR - BKK

1 stop22h 35mChina Eastern

Tue 20/502:10BKK - LHR

1 stop22h 30mChina Eastern

Deal found 30/3$936

Wed 14/519:15LHR - BKK

2 stops24h 15mChina Southern

Tue 20/503:00BKK - LHR

1 stop22h 00mChina Southern

Deal found 30/3$949

Thu 1/522:40LHR - BKK

1 stop19h 30mAir China

Mon 2/601:30BKK - LHR

1 stop25h 00mAir China

Deal found 30/3$955

Tue 13/509:30LHR - SIN

1 stop17h 10mEtihad Airways

Tue 20/521:10SIN - LHR

1 stop16h 50mEtihad Airways

Deal found 31/3$997

Mon 22/913:30LHR - SIN

1 stop19h 55mLufthansa

Sun 22/223:45SIN - LHR

1 stop24h 05mLufthansa

Deal found 31/3$1,064

Thu 15/522:15LHR - SIN

1 stop20h 55mMultiple Airlines

Thu 22/512:05SIN - LHR

2 stops38h 25mMultiple Airlines

Deal found 31/3$1,069

Mon 12/520:55LHR - KUL

2 stops39h 30mKLM

Thu 15/516:10KUL - LHR

2 stops25h 35mKLM

Deal found 31/3$1,069

Wed 17/906:00LHR - SIN

2 stops30h 40mAustrian Airlines

Tue 7/1020:50SIN - LHR

2 stops18h 30mAustrian Airlines

Deal found 31/3$1,086

Mon 5/512:30LHR - BKK

1 stop19h 05mAir India

Mon 28/714:45BKK - LHR

1 stop25h 30mAir India

Deal found 31/3$1,091

Sun 21/910:00LHR - SIN

1 stop19h 20mGulf Air

Wed 1/1020:00SIN - LHR

1 stop26h 20mGulf Air

Deal found 31/3$1,102

Direct flights from Heathrow to Southeast Asia
Explore direct flight options from Heathrow to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 1 April 2025.

Thu 15/519:35LHR - SIN

Nonstop13h 30mBritish Airways

Thu 22/523:20SIN - LHR

Nonstop14h 05mBritish Airways

Deal found 31/3$1,181

Tue 10/621:10LHR - KUL

Nonstop13h 10mBritish Airways

Mon 30/622:50KUL - LHR

Nonstop13h 35mBritish Airways

Deal found 31/3$1,186

Thu 11/909:25LHR - SIN

Nonstop13h 05mSingapore Airlines

Thu 18/909:00SIN - LHR

Nonstop13h 45mSingapore Airlines

Deal found 31/3$1,227

Fri 12/921:35LHR - KUL

Nonstop13h 15mMalaysia Airlines

Sun 5/1009:50KUL - LHR

Nonstop13h 45mMalaysia Airlines

Deal found 31/3$1,264

Sun 4/521:35LHR - BKK

Nonstop11h 55mEVA Air

Tue 13/512:20BKK - LHR

Nonstop13h 00mEVA Air

Deal found 31/3$1,422

Sun 4/512:30LHR - BKK

Nonstop11h 30mThai Airways

Mon 12/500:30BKK - LHR

Nonstop12h 45mThai Airways

Deal found 31/3$1,527

Thu 24/420:50LHR - SIN

Nonstop13h 35mQantas Airways

Thu 8/523:25SIN - LHR

Nonstop14h 10mQantas Airways

Deal found 31/3$1,674

Wed 7/521:35LHR - BKK

Nonstop11h 55mMultiple Airlines

Thu 22/500:30BKK - LHR

Nonstop12h 45mMultiple Airlines

Deal found 31/3$1,714

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 1 April 2025 and is based on user searches.

Mon 7/422:05LHR - BKK

1 stop31h 05mShenzhen Airlines

Sun 4/503:15BKK - LHR

1 stop22h 35mShenzhen Airlines

Deal found 31/3$1,248

Mon 7/418:40LHR - DPS

2 stops21h 05mMultiple Airlines

Mon 14/414:50DPS - LHR

2 stops24h 25mMultiple Airlines

Deal found 31/3$1,500

Mon 7/409:30LHR - BKK

1 stop38h 00mFinnair

Mon 15/1208:00BKK - LHR

1 stop38h 15mFinnair

Deal found 1/4$1,553

Mon 7/410:20LHR - SIN

1 stop25h 05mFinnair

Tue 22/421:35SIN - LHR

1 stop30h 05mFinnair

Deal found 31/3$1,620

Mon 7/422:05LHR - SIN

1 stop21h 35mShenzhen Airlines

Fri 18/403:40SIN - LHR

1 stop23h 10mShenzhen Airlines

Deal found 31/3$1,644

Mon 7/416:25LHR - BKK

1 stop15h 55mLufthansa

Mon 7/723:00BKK - LHR

1 stop27h 45mLufthansa

Deal found 31/3$1,646

Tue 8/417:50LHR - SIN

1 stop15h 50mLufthansa

Thu 26/223:45SIN - LHR

1 stop16h 20mLufthansa

Deal found 31/3$1,428

Tue 8/413:45LHR - SIN

1 stop19h 55mMultiple Airlines

Wed 25/200:05SIN - LHR

1 stop16h 00mMultiple Airlines

Deal found 31/3$1,452

Wed 9/420:45LHR - HKT

2 stops32h 05mMultiple Airlines

Thu 8/511:50HKT - LHR

1 stop36h 25mMultiple Airlines

Deal found 31/3$1,532

Wed 9/422:05LHR - KUL

1 stop22h 15mShenzhen Airlines

Sun 27/404:20KUL - LHR

1 stop22h 40mShenzhen Airlines

Deal found 31/3$1,563

Thu 10/420:55LHR - BKK

1 stop30h 35mKLM

Wed 9/712:05BKK - LHR

1 stop25h 35mKLM

Deal found 31/3$1,531

Fri 11/406:00LHR - BKK

1 stop21h 45mSWISS

Fri 13/612:50BKK - LHR

1 stop25h 05mSWISS

Deal found 31/3$1,588

One-way flights from Heathrow to Southeast Asia
Search for one-way flight options from Heathrow to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 1 April 2025.

Tue 15/422:40LHR - BKK

2 stops22h 30mAir China

Deal found 31/3$602

Sun 24/814:45LHR - KUL

1 stop22h 05mEtihad Airways

Deal found 31/3$650

Sun 18/517:30LHR - SIN

1 stop111h 15mSAUDIA

Deal found 31/3$652

Fri 18/420:30LHR - SIN

2 stops46h 40mMultiple Airlines

Deal found 31/3$653

Fri 9/510:00LHR - BKK

1 stop21h 45mSAUDIA

Deal found 31/3$655

Thu 15/517:50LHR - KUL

2 stops23h 45mSAUDIA

Deal found 31/3$660

Fri 18/421:20LHR - SIN

1 stop25h 05mChina Eastern

Deal found 31/3$677

Mon 28/422:05LHR - SIN

1 stop21h 35mShenzhen Airlines

Deal found 31/3$685

Sat 26/422:05LHR - KUL

1 stop22h 15mShenzhen Airlines

Deal found 31/3$685

Thu 22/511:25LHR - SIN

Nonstop13h 05mSingapore Airlines

Deal found 31/3$716

Wed 9/409:45LHR - KUL

1 stop28h 10mAir India

Deal found 31/3$716

Sun 28/921:45LHR - BKK

1 stop27h 25mEtihad Airways

Deal found 31/3$729

Cheapflights 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

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 21/4

22:05-11:10

1 stop31h 05m

Bangkok Suvarnabhumi

Thu 8/5

12:10-20:00

1 stop37h 50m

$922

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 3/5

17:50-13:45

2 stops37h 55m

Bangkok Suvarnabhumi

Mon 12/5

15:25-14:15

2 stops28h 50m

$927

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 4/5

21:20-21:55

1 stop18h 35m

Bangkok Suvarnabhumi

Mon 12/5

02:10-18:40

1 stop22h 30m

$943

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Mon 9/6

14:40-00:35

1 stop26h 55m

Kuala Lumpur Intl

Fri 5/9

17:35-14:15

2 stops27h 40m

$978

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 4/5

22:10-17:55

1 stop37h 45m

Bangkok Suvarnabhumi

Mon 12/5

03:00-18:05

2 stops21h 05m

$981

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 7/5

22:00-10:00

1 stop30h 00m

Bangkok Suvarnabhumi

Thu 22/5

01:30-19:30

2 stops24h 00m

$984

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 13/5

09:30-09:40

1 stop17h 10m

Singapore Changi

Tue 20/5

21:10-07:00

1 stop16h 50m

$997

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Sat 10/5

22:00-17:45

1 stop36h 45m

Kuala Lumpur Intl

Tue 13/5

00:10-20:30

1 stop27h 20m

$1,005

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 8/5

20:25-03:10

2 stops24h 45m

Bangkok Suvarnabhumi

Fri 16/5

01:30-17:45

1 stop22h 15m

$1,005

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 22/9

13:30-16:25

1 stop19h 55m

Singapore Changi

Sun 22/2

23:45-15:50

1 stop24h 05m

$1,064

Flights are sorted by cheapest return flights first.

Deals found on 31/3

Showing 1-10 of 60 results

...

Best time to book a flight from Heathrow to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Heathrow with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Southeast Asia

What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of $489). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of $911). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to YJX?

When flying from London Heathrow Airport to Southeast Asia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London Heathrow Airport to Southeast Asia

The most flights from LHR to zzYJX are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Southeast Asia by month

In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm.

Temperature in Southeast Asia by month

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

Reviews of airlines servicing Southeast Asia

Read reviews from past customers who have flown EVA Air, Garuda Indonesia and China Airlines from London to Southeast Asia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very Good

1,170 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

EVA Air

8.4

Very Good

1,170 reviews

EVA Air

8.4

Very Good

1,170 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Garuda Indonesia

8.2

Very Good

71 reviews

EVA Air

8.4

Very Good

1,170 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

China Airlines

8.2

Very Good

723 reviews

EVA Air

8.4

Very Good

1,170 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Hainan Airlines

8.1

Very Good

36 reviews

EVA Air

8.4

Very Good

1,170 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Related info for your journey

What are the cheapest airlines to fly from London Heathrow Airport to Southeast Asia one-way?
To fly one-way, consider booking your trip with Air China, which is currently one of the cheapest options available, starting at $602. Etihad Airways flights start at $650 while deals on SAUDIA start at $652 one-way.
What are the most popular routes from London Heathrow Airport to Southeast Asia?
The most popular route from London Heathrow Airport to Southeast Asia is London Heathrow - Kuala Lumpur Intl. You may also consider London Heathrow - Singapore Changi or London Heathrow - Bangkok Suvarnabhumi.
What are the most reliable airlines from London Heathrow Airport to Southeast Asia?
Consider Air Canada (71%), Thai Airways (67%) or EVA Air (62%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Southeast Asia.
What are the cheapest flights from London Heathrow Airport to Southeast Asia?
Looking at all options, your cheapest flight can be booked for $873. While the most popular route (London Heathrow - Kuala Lumpur Intl) can be booked for $717 on average our data indicates $2,792 when flying from London Heathrow Airport to Southeast Asia.
Can I find deals for flights from Heathrow to Southeast Asia that include hotel bookings?
Yes. In addition to deals on Heathrow to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Southeast Asia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Southeast Asia.
Can I find deals for business class flights from Heathrow to Southeast Asia?
Yes. Cheapflights offers flight deals from Heathrow to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of $489). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of $911). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Southeast Asia

Heathrow to Singapore flights

Gatwick to Suvarnabhumi flights

Heathrow to Suvarnabhumi flights

Complete your trip

Incheon Intl Airport car hire

Los Angeles Airport car hire

Kastrup Copenhagen Airport car hire

Madrid Barajas Airport car hire

Bangkok Suvarnabhumi Airport car hire

Barcelona-El Prat Airport car hire

Lisbon Humberto Delgado Airport car hire

Miami Airport car hire

Amsterdam Schiphol Airport car hire

San Francisco Airport car hire

Boston Logan Intl Airport car hire

Manila Ninoy Aquino Intl Airport car hire

Direct flights to

Top 4 airlines flying from Heathrow to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Air China	Cheapest$909	Average$1,032	FlexibilityNo cancel fee	On-time67%	Search Air China flights
Singapore Airlines	Cheapest$1,126	Average$1,313	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Thai Airways	Cheapest$1,238	Average$1,280	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights
Etihad Airways	Cheapest$1,392	Average$1,402	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Southeast Asia?

When you search for this flight from Heathrow to Southeast Asia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Southeast Asia?

Cheapflights helps you find that perfect flight to Southeast Asia from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to Southeast Asia with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Southeast Asia flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Heathrow to Southeast Asia become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Southeast Asia from Heathrow today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to Southeast Asia from $602

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Southeast Asia

Keep the following information in mind while searching for Heathrow to Southeast Asia flight deals. Data was last updated 1 April 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Southeast Asia

Cheapest flights from Heathrow to Southeast AsiaExplore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 April 2025.

Explore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 April 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Heathrow to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Heathrow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Southeast Asia

What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?

What is the cheapest time of day to fly from LHR to YJX?

Find hourly flight availability from Heathrow to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 April 2025.

Weekly flight availability from London Heathrow Airport to Southeast Asia

Rainfall in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average rainfall totals by month.

Temperature in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average temperature totals by month.

Reviews of airlines servicing Southeast Asia

Read reviews from past customers who have flown EVA Air, Garuda Indonesia and China Airlines from London to Southeast Asia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from London Heathrow Airport to Southeast Asia one-way?

What are the most popular routes from London Heathrow Airport to Southeast Asia?

What are the most reliable airlines from London Heathrow Airport to Southeast Asia?

What are the cheapest flights from London Heathrow Airport to Southeast Asia?

Can I find deals for flights from Heathrow to Southeast Asia that include hotel bookings?

How can I find direct flights from Heathrow to Southeast Asia?

Can I find deals for business class flights from Heathrow to Southeast Asia?

What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Heathrow to Southeast Asia

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Southeast Asia?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Southeast Asia?

Can Cheapflights find flights from Heathrow to Southeast Asia with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Southeast Asia become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Heathrow to Southeast Asia
Explore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 April 2025.