How long is the flight from London Heathrow Airport to Southeast Asia?

Air India, Gulf Air, and Shenzhen Airlines can get you from London Heathrow Airport to Southeast Asia in just under 19h. Your travel time can differ by up to 13h 45m. Airlines will cover a distance of 10874 km. This flight may include one or multiple stops. Find deals

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 Singapore Airlines, which is currently one of the cheapest options available, starting at $654. Thai Airways flights start at $813 while deals on Qatar Airways start at $816 one-way. Find deals

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.

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).

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 - Denpasar Bali Ngurah Rai. You may also consider London Heathrow - Bangkok Suvarnabhumi or London Heathrow - Phuket City.

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

Looking at all options, your cheapest flight can be booked for $1,487. While the most popular route (London Heathrow - Denpasar Bali Ngurah Rai) can be booked for $926 on average, our data indicates $2,327 when flying from London Heathrow Airport to Southeast Asia.

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

Consider EVA Air (90%), Thai Airways (87%) or Air Canada (83%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Southeast Asia.

What are the most popular airlines that fly from London Heathrow Airport to Southeast Asia?

When booking a flight from London Heathrow Airport to Southeast Asia, you may want to consider flying on Thai Airways, Etihad Airways or Singapore Airlines as they are the most popular for this route.

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.

$594+ Flights from London Heathrow Airport to Southeast Asia

Cheap flight deals from Heathrow to Southeast Asia

Enter your travel dates to find the best prices.

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 10 December 2025.

Mon 29/1221:10LHR - KUL

1 stop38h 20mShenzhen Airlines

Tue 20/113:25KUL - LHR

1 stop37h 45mShenzhen Airlines

Deal found 8/12$1,042

Mon 8/1217:05LHR - SIN

1 stop15h 10mKLM

Mon 15/1201:40SIN - LHR

1 stop17h 05mKLM

Deal found 8/12$1,101

Sun 28/1221:10LHR - KUL

1 stop38h 20mShenzhen Airlines

Tue 3/220:30KUL - LHR

1 stop30h 40mShenzhen Airlines

Deal found 8/12$1,148

Sun 28/1221:10LHR - SIN

1 stop31h 00mShenzhen Airlines

Thu 29/103:00SIN - LHR

1 stop24h 10mShenzhen Airlines

Deal found 8/12$1,188

Wed 31/1208:50LHR - BKK

1 stop26h 10mEtihad Airways

Sat 17/102:55BKK - LHR

1 stop34h 45mEtihad Airways

Deal found 9/12$1,205

Wed 31/1208:50LHR - BKK

1 stop15h 20mEtihad Airways

Mon 19/109:25BKK - LHR

1 stop15h 45mEtihad Airways

Deal found 9/12$1,219

Wed 31/1208:50LHR - BKK

1 stop15h 20mEtihad Airways

Wed 4/308:55BKK - LHR

1 stop16h 15mEtihad Airways

Deal found 9/12$1,234

Tue 9/1213:45LHR - BKK

1 stop14h 00mSWISS

Wed 17/1213:15BKK - LHR

1 stop25h 50mSWISS

Deal found 8/12$1,240

Wed 31/1208:50LHR - BKK

1 stop26h 10mEtihad Airways

Sat 17/109:25BKK - LHR

1 stop15h 45mEtihad Airways

Deal found 9/12$1,246

Mon 8/1210:00LHR - BKK

1 stop20h 40mSAUDIA

Mon 15/1201:15BKK - LHR

1 stop18h 00mSAUDIA

Deal found 8/12$1,247

Wed 31/1208:50LHR - BKK

1 stop15h 20mEtihad Airways

Fri 16/109:25BKK - LHR

1 stop28h 15mEtihad Airways

Deal found 9/12$1,259

Wed 31/1208:50LHR - BKK

1 stop26h 10mEtihad Airways

Sun 1/208:55BKK - LHR

1 stop16h 15mEtihad Airways

Deal found 8/12$1,261

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 10 December 2025.

Thu 5/321:05LHR - DPS

1 stop32h 45mAir India

Mon 23/310:00DPS - LHR

1 stop33h 30mAir India

Deal found 8/12$985

Mon 2/209:30LHR - SIN

1 stop19h 00mGulf Air

Wed 25/320:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 8/12$1,018

Wed 18/321:10LHR - KUL

1 stop22h 10mShenzhen Airlines

Sat 4/403:30KUL - LHR

1 stop23h 30mShenzhen Airlines

Deal found 9/12$1,035

Tue 12/517:10LHR - DPS

2 stops23h 55mMultiple Airlines

Tue 26/519:00DPS - LHR

2 stops20h 20mMultiple Airlines

Deal found 9/12$1,066

Wed 1/417:30LHR - SIN

1 stop16h 00mLufthansa

Sat 16/523:40SIN - LHR

1 stop16h 00mLufthansa

Deal found 9/12$1,092

Wed 28/114:15LHR - KUL

1 stop26h 20mSAUDIA

Tue 21/402:15KUL - LHR

1 stop17h 25mSAUDIA

Deal found 8/12$1,115

Sat 17/113:55LHR - HKT

1 stop26h 40mEtihad Airways

Sat 24/115:30HKT - LHR

1 stop27h 35mEtihad Airways

Deal found 8/12$1,131

Wed 14/114:25LHR - SIN

2 stops19h 35mSWISS

Tue 20/100:05SIN - LHR

2 stops21h 35mSWISS

Deal found 9/12$1,149

Thu 23/409:25LHR - SIN

Nonstop13h 05mSingapore Airlines

Thu 28/509:00SIN - LHR

Nonstop13h 45mSingapore Airlines

Deal found 9/12$1,231

Tue 17/214:55LHR - KUL

1 stop15h 45mBritish Airways

Wed 4/323:20KUL - LHR

Nonstop14h 05mBritish Airways

Deal found 8/12$1,241

Wed 6/511:45LHR - HKT

2 stops24h 45mKLM

Sun 17/521:55HKT - LHR

2 stops29h 00mKLM

Deal found 9/12$1,277

Sun 1/322:35LHR - DPS

1 stop37h 25mTurkish Airlines

Sat 7/321:10DPS - LHR

1 stop27h 00mTurkish Airlines

Deal found 9/12$1,321

Mon 19/118:45LHR - BKK

1 stop17h 40mQatar Airways

Tue 27/109:05BKK - LHR

1 stop19h 50mQatar Airways

Deal found 9/12$1,342

Sat 10/111:00LHR - DPS

1 stop20h 00mVietnam Airlines

Wed 21/116:05DPS - LHR

1 stop23h 10mVietnam Airlines

Deal found 8/12$1,360

Tue 21/417:00LHR - HKT

1 stop18h 20mCathay Pacific

Mon 11/511:50HKT - LHR

1 stop23h 50mCathay Pacific

Deal found 9/12$1,463

Fri 15/522:05LHR - BKK

1 stop31h 05mShenzhen Airlines

Sun 31/503:15BKK - LHR

1 stop22h 35mShenzhen Airlines

Deal found 9/12$1,050

Tue 5/509:45LHR - DPS

1 stop39h 45mAir India

Thu 14/510:00DPS - LHR

1 stop32h 30mAir India

Deal found 9/12$1,062

Wed 11/217:45LHR - KUL

1 stop22h 50mSAUDIA

Sun 15/302:15KUL - LHR

1 stop18h 00mSAUDIA

Deal found 8/12$1,115

Thu 22/114:25LHR - SIN

2 stops19h 35mSWISS

Wed 28/100:05SIN - LHR

2 stops21h 35mSWISS

Deal found 7/12$1,151

Fri 22/522:05LHR - BKK

1 stop38h 25mShenzhen Airlines

Sun 31/512:10BKK - LHR

1 stop37h 40mShenzhen Airlines

Deal found 9/12$1,050

Fri 5/614:45LHR - KUL

1 stop22h 05mEtihad Airways

Sun 14/609:35KUL - LHR

1 stop28h 25mEtihad Airways

Deal found 9/12$1,166

Sat 7/320:35LHR - SIN

Nonstop13h 05mSingapore Airlines

Sat 21/309:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 8/12$1,264

Sun 7/608:40LHR - HKT

2 stops23h 25mMultiple Airlines

Sun 21/607:35HKT - LHR

2 stops19h 50mMultiple Airlines

Deal found 9/12$1,274

Thu 26/214:15LHR - BKK

1 stop16h 25mSAUDIA

Sat 4/415:25BKK - LHR

1 stop22h 05mSAUDIA

Deal found 9/12$1,169

Fri 16/108:50LHR - HKT

1 stop31h 45mEtihad Airways

Sat 24/115:30HKT - LHR

1 stop27h 35mEtihad Airways

Deal found 8/12$1,170

Thu 19/220:35LHR - KUL

Nonstop12h 50mBritish Airways

Thu 26/319:55KUL - LHR

1 stop18h 40mBritish Airways

Deal found 8/12$1,288

Sun 10/520:05LHR - DPS

2 stops45h 00mSWISS

Mon 25/513:05DPS - LHR

3 stops30h 55mSWISS

Deal found 8/12$1,192

Wed 11/221:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Sun 15/203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 9/12$1,086

Mon 25/508:40LHR - HKT

2 stops23h 25mKLM

Mon 1/607:35HKT - LHR

2 stops19h 20mKLM

Deal found 8/12$1,324

Wed 8/416:55LHR - DPS

1 stop20h 05mTurkish Airlines

Wed 29/420:55DPS - LHR

1 stop31h 05mTurkish Airlines

Deal found 9/12$1,344

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 10 December 2025.

Wed 14/120:35LHR - SIN

Nonstop13h 05mSingapore Airlines

Wed 21/109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 9/12$1,134

Thu 22/109:10LHR - SIN

Nonstop13h 00mSingapore Airlines

Thu 29/109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 7/12$1,148

Wed 18/209:10LHR - SIN

Nonstop13h 00mSingapore Airlines

Wed 18/309:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 8/12$1,210

Tue 10/221:25LHR - KUL

Nonstop12h 55mMalaysia Airlines

Sun 15/209:15KUL - LHR

Nonstop14h 10mMalaysia Airlines

Deal found 9/12$1,217

Thu 5/320:10LHR - SIN

Nonstop13h 30mQantas Airways

Tue 17/323:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 8/12$1,222

Sun 1/320:10LHR - SIN

Nonstop13h 30mQantas Airways

Sun 15/323:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 8/12$1,223

Thu 23/409:25LHR - SIN

Nonstop13h 05mSingapore Airlines

Thu 28/509:00SIN - LHR

Nonstop13h 45mSingapore Airlines

Deal found 9/12$1,231

Sat 7/318:40LHR - SIN

Nonstop13h 15mBritish Airways

Tue 10/323:15SIN - LHR

Nonstop14h 40mBritish Airways

Deal found 8/12$1,252

Wed 4/220:10LHR - SIN

Nonstop13h 30mQantas Airways

Sun 15/223:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 9/12$1,259

Sat 28/220:10LHR - SIN

Nonstop13h 30mQantas Airways

Mon 16/323:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 8/12$1,261

Sat 21/220:10LHR - SIN

Nonstop13h 30mQantas Airways

Sun 8/323:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 8/12$1,262

Mon 16/320:35LHR - KUL

Nonstop12h 50mBritish Airways

Tue 24/323:20KUL - LHR

Nonstop14h 05mBritish Airways

Deal found 9/12$1,304

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 10 December 2025 and is based on user searches.

Mon 5/121:10LHR - BKK

1 stop38h 20mShenzhen Airlines

Sun 8/203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 9/12$970

Sat 10/122:00LHR - DPS

1 stop31h 50mAir India

Wed 28/115:10DPS - LHR

1 stop28h 20mAir India

Deal found 8/12$1,039

Wed 14/121:30LHR - SIN

2 stops55h 55mChina Southern

Wed 21/108:00SIN - LHR

1 stop18h 35mChina Southern

Deal found 9/12$1,017

Tue 20/117:50LHR - SIN

1 stop15h 35mLufthansa

Wed 18/223:45SIN - LHR

1 stop16h 20mLufthansa

Deal found 9/12$988

Tue 20/108:45LHR - DPS

1 stop21h 05mAir India

Thu 5/210:00DPS - LHR

1 stop33h 30mAir India

Deal found 9/12$1,038

Thu 22/120:25LHR - BKK

1 stop38h 40mAir China

Thu 29/123:50BKK - LHR

1 stop25h 00mAir China

Deal found 7/12$917

Thu 22/122:00LHR - BKK

1 stop20h 05mChina Southern

Wed 28/102:40BKK - LHR

2 stops22h 15mChina Southern

Deal found 7/12$954

Thu 22/121:30LHR - SIN

2 stops55h 55mChina Southern

Thu 29/108:00SIN - LHR

1 stop18h 35mChina Southern

Deal found 7/12$967

Thu 22/121:00LHR - HKT

1 stop18h 45mChina Eastern

Thu 29/119:35HKT - LHR

2 stops28h 55mChina Eastern

Deal found 7/12$1,002

Thu 22/122:00LHR - KUL

2 stops43h 40mChina Southern

Wed 28/102:20KUL - LHR

1 stop24h 15mChina Southern

Deal found 8/12$1,003

Thu 22/121:50LHR - SIN

1 stop30h 40mGulf Air

Mon 26/120:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 8/12$1,018

Fri 23/122:00LHR - BKK

1 stop20h 05mChina Southern

Fri 30/119:55BKK - LHR

2 stops49h 05mChina Southern

Deal found 9/12$940

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 10 December 2025.

Tue 5/522:15LHR - KUL

3 stops30h 45mMultiple Airlines

Deal found 9/12$594

Sun 8/221:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Deal found 9/12$610

Wed 31/1219:45LHR - BKK

1 stop31h 20mHainan Airlines

Deal found 9/12$619

Thu 26/319:00LHR - SIN

1 stop24h 20mMultiple Airlines

Deal found 9/12$621

Thu 15/120:25LHR - BKK

1 stop20h 45mAir China

Deal found 9/12$622

Mon 23/310:00LHR - BKK

1 stop20h 40mSAUDIA

Deal found 9/12$624

Tue 5/520:25LHR - KUL

1 stop19h 35mAir China

Deal found 9/12$634

Mon 13/417:50LHR - SIN

1 stop15h 50mLufthansa

Deal found 9/12$642

Wed 14/109:30LHR - SIN

1 stop19h 00mGulf Air

Deal found 8/12$657

Sun 15/309:30LHR - SIN

1 stop19h 00mGulf Air

Deal found 9/12$658

Fri 9/121:10LHR - BKK

2 stops33h 30mMultiple Airlines

Deal found 9/12$663

Fri 9/121:10LHR - SIN

1 stop20h 50mShenzhen Airlines

Deal found 8/12$664

Find flight deals from Heathrow to Southeast Asia

Round-trip from	$917
One-way from	$594
Popular in	December
Cheapest in	May
Average price	$1,717

Air China
22/1-29/1
2 total stops
63h 40m total
London to Southeast Asia

Search Deals

5/5
3 total stops
30h 45m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($163 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($60 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

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

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

Thu 5/3

21:05-13:50

1 stop32h 45m

Denpasar Bali Ngurah Rai

Mon 23/3

10:00-11:30

1 stop33h 30m

$985

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 2/2

09:30-12:30

1 stop19h 00m

Singapore Changi

Wed 25/3

20:00-06:35

1 stop18h 35m

$1,018

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Wed 18/3

21:10-03:20

1 stop22h 10m

Kuala Lumpur Intl

Sat 4/4

03:30-20:00

1 stop23h 30m

$1,035

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 15/5

22:05-11:10

1 stop31h 05m

Bangkok Suvarnabhumi

Sun 31/5

03:15-19:50

1 stop22h 35m

$1,050

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 22/5

22:05-18:30

1 stop38h 25m

Bangkok Suvarnabhumi

Sun 31/5

12:10-19:50

1 stop37h 40m

$1,050

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

Tue 5/5

09:45-08:30

1 stop39h 45m

Denpasar Bali Ngurah Rai

Thu 14/5

10:00-11:30

1 stop32h 30m

$1,062

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

Tue 12/5

17:10-00:05

2 stops23h 55m

Denpasar Bali Ngurah Rai

Tue 26/5

19:00-08:20

2 stops20h 20m

$1,066

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 11/2

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Sun 15/2

03:15-19:10

1 stop22h 55m

$1,086

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 1/4

17:30-16:30

1 stop16h 00m

Singapore Changi

Sat 16/5

23:40-08:40

1 stop16h 00m

$1,092

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Wed 28/1

14:15-00:35

1 stop26h 20m

Kuala Lumpur Intl

Tue 21/4

02:15-12:40

1 stop17h 25m

$1,115

Flights are sorted by cheapest return flights first.

Deals found on 9/12

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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of $750). Flying from London Heathrow Airport to Southeast Asia in July is currently the most expensive (average of $1,104). 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).

Reviews of airlines servicing Southeast Asia

See what other customers who have flown with Singapore Airlines, Thai Airways, andEtihad Airways from London Heathrow Airport to Southeast Asia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.1

Very Good

1,412 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Singapore Airlines

8.1

Very Good

1,412 reviews

Singapore Airlines

8.1

Very Good

1,412 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Thai Airways

7.8

Good

366 reviews

Singapore Airlines

8.1

Very Good

1,412 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Etihad Airways

7.4

Good

1,330 reviews

Singapore Airlines

8.1

Very Good

1,412 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Related info for your journey

How long is the flight from London Heathrow Airport to Southeast Asia?
Air India, Gulf Air, and Shenzhen Airlines can get you from London Heathrow Airport to Southeast Asia in just under 19h. Your travel time can differ by up to 13h 45m. Airlines will cover a distance of 10874 km. This flight may include one or multiple stops.
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 Singapore Airlines, which is currently one of the cheapest options available, starting at $654. Thai Airways flights start at $813 while deals on Qatar Airways start at $816 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 - Denpasar Bali Ngurah Rai. You may also consider London Heathrow - Bangkok Suvarnabhumi or London Heathrow - Phuket City.
What are the most reliable airlines from London Heathrow Airport to Southeast Asia?
Consider EVA Air (90%), Thai Airways (87%) or Air Canada (83%) 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 $1,487. While the most popular route (London Heathrow - Denpasar Bali Ngurah Rai) can be booked for $926 on average, our data indicates $2,327 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of $750). Flying from London Heathrow Airport to Southeast Asia in July is currently the most expensive (average of $1,104). 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

Gatwick to Suvarnabhumi flights

Heathrow to Singapore flights

Heathrow to Suvarnabhumi flights

Complete your trip

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Miami Airport car hire

Bogotá El Dorado Airport car hire

Manila Ninoy Aquino Intl Airport car hire

Barcelona-El Prat Airport car hire

San Francisco Airport car hire

Boston Logan Intl Airport car hire

Amsterdam Schiphol Airport car hire

Direct flights to

Top 2 airlines flying from Heathrow to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	Cheapest$1,060	Average$1,416	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Thai Airways	Cheapest$1,163	Average$1,207	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights

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Cheap flights from London Heathrow Airport to Southeast Asia from $594

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 5/5. 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

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 10 December 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 10 December 2025.

Find 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 10 December 2025.

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One-way from

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Cheapflights Fare Finder

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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.

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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 10 December 2025.

Weekly flight availability from London Heathrow Airport to Southeast Asia

Reviews of airlines servicing Southeast Asia

See what other customers who have flown with Singapore Airlines, Thai Airways, andEtihad Airways from London Heathrow Airport to Southeast Asia have to say. Users have also rated airlines in terms of 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.

How long is the flight from London Heathrow Airport to Southeast Asia?

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?

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Alternative routes for Heathrow to Southeast Asia

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

Top 2 airlines flying from Heathrow to Southeast Asia

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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?

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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 10 December 2025.