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

Shenzhen Airlines, SWISS, and Etihad Airways can get you from London Heathrow Airport to Southeast Asia in just under 15h 20m. Your travel time can differ by up to 6h 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. Gulf Air flights start at $672 while deals on SWISS start at $673 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 - Bangkok Suvarnabhumi. You may also consider London Heathrow - Singapore Changi or London Heathrow - Kuala Lumpur Intl.

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

Looking at all options, your cheapest flight can be booked for $1,191. While the most popular route (London Heathrow - Bangkok Suvarnabhumi) can be booked for $1,040 on average, our data indicates $1,477 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 (78%), Thai Airways (76%) or Air Canada (69%) when booking your flight. These represent the most reliable airlines 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.

$600+ Flights from London Heathrow Airport to Southeast Asia

Cheap flight deals from Heathrow to Southeast Asia

Round-trip from	$893
One-way from	$600
Popular in	December
Cheapest in	May
Average price	$1,100

Shenzhen Airlines
1/11-8/11
2 total stops
69h 00m total
London to Southeast Asia

Search Deals

2/10
2 total stops
34h 10m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($187 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($68 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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 18 September 2025.

Sat 1/1121:10LHR - BKK

1 stop38h 20mShenzhen Airlines

Sat 8/1119:30BKK - LHR

1 stop30h 40mShenzhen Airlines

Deal found 17/9$893

Sun 2/1121:10LHR - BKK

1 stop31h 00mShenzhen Airlines

Sat 29/1103:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 16/9$907

Fri 7/1121:10LHR - BKK

1 stop31h 00mShenzhen Airlines

Tue 25/1119:30BKK - LHR

1 stop30h 40mShenzhen Airlines

Deal found 16/9$908

Sat 29/1121:10LHR - BKK

1 stop31h 00mShenzhen Airlines

Sat 20/1219:30BKK - LHR

1 stop30h 40mShenzhen Airlines

Deal found 16/9$910

Mon 3/1121:10LHR - BKK

1 stop31h 00mShenzhen Airlines

Sat 22/1112:10BKK - LHR

1 stop38h 00mShenzhen Airlines

Deal found 18/9$911

Tue 25/1121:00LHR - BKK

1 stop20h 55mChina Eastern

Fri 30/105:05BKK - LHR

1 stop19h 25mChina Eastern

Deal found 16/9$916

Mon 3/1117:50LHR - SIN

1 stop15h 35mMultiple Airlines

Mon 24/1100:05SIN - LHR

1 stop16h 00mMultiple Airlines

Deal found 15/9$920

Mon 24/1113:30LHR - BKK

1 stop17h 05mAir India

Sat 29/1114:45BKK - LHR

1 stop27h 20mAir India

Deal found 16/9$920

Thu 6/1117:50LHR - SIN

1 stop15h 35mMultiple Airlines

Tue 11/1100:05SIN - LHR

1 stop16h 00mMultiple Airlines

Deal found 16/9$923

Thu 6/1117:50LHR - SIN

1 stop15h 35mMultiple Airlines

Wed 19/1100:05SIN - LHR

1 stop16h 00mMultiple Airlines

Deal found 17/9$926

Sat 1/1120:25LHR - BKK

1 stop20h 45mAir China

Fri 7/1101:30BKK - LHR

1 stop23h 20mAir China

Deal found 17/9$928

Thu 20/1117:50LHR - SIN

1 stop15h 35mLufthansa

Tue 16/1223:45SIN - LHR

1 stop16h 20mLufthansa

Deal found 16/9$953

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 18 September 2025.

Sun 30/1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Sun 14/1203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 17/9$911

Mon 3/1118:40LHR - SIN

1 stop15h 20mSWISS

Mon 24/1100:05SIN - LHR

2 stops21h 35mSWISS

Deal found 15/9$1,009

Wed 1/1020:55LHR - BKK

1 stop15h 55mEtihad Airways

Wed 29/1008:55BKK - LHR

1 stop16h 15mEtihad Airways

Deal found 16/9$1,058

Tue 18/1121:50LHR - SIN

1 stop30h 40mGulf Air

Sun 14/1220:25SIN - LHR

1 stop18h 10mGulf Air

Deal found 16/9$1,145

Mon 27/1010:20LHR - SIN

1 stop24h 20mFinnair

Fri 31/1022:05SIN - LHR

1 stop26h 55mFinnair

Deal found 17/9$1,184

Tue 24/213:50LHR - KUL

1 stop16h 05mBritish Airways

Mon 9/323:20KUL - LHR

Nonstop14h 05mBritish Airways

Deal found 16/9$1,192

Wed 8/1012:10LHR - DPS

2 stops28h 55mMultiple Airlines

Wed 5/1119:00DPS - LHR

2 stops21h 20mMultiple Airlines

Deal found 16/9$1,202

Tue 7/1018:55LHR - SIN

1 stop19h 05mQatar Airways

Mon 13/1003:10SIN - LHR

1 stop17h 55mQatar Airways

Deal found 17/9$1,240

Tue 4/1114:15LHR - DPS

2 stops21h 55mSAUDIA

Wed 12/1122:05DPS - LHR

2 stops22h 10mSAUDIA

Deal found 17/9$1,318

Tue 4/1111:00LHR - DPS

1 stop20h 00mVietnam Airlines

Mon 17/1116:05DPS - LHR

1 stop23h 10mVietnam Airlines

Deal found 16/9$1,443

Wed 24/912:20LHR - DPS

1 stop19h 40mCathay Pacific

Sun 19/1018:45DPS - LHR

1 stop27h 30mCathay Pacific

Deal found 16/9$1,548

Tue 9/1221:15LHR - DPS

1 stop33h 25mChina Airlines

Sun 11/115:45DPS - LHR

1 stop33h 10mChina Airlines

Deal found 16/9$1,578

Sat 29/1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Tue 16/1203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 17/9$911

Wed 19/1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Tue 16/1203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 17/9$911

Mon 3/1120:05LHR - SIN

1 stop37h 55mSWISS

Sun 23/1100:05SIN - LHR

2 stops21h 35mSWISS

Deal found 15/9$1,009

Thu 30/1013:55LHR - BKK

2 stops26h 35mEtihad Airways

Wed 3/1202:55BKK - LHR

1 stop18h 35mEtihad Airways

Deal found 17/9$1,084

Fri 28/1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Tue 16/1203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 17/9$911

Fri 31/1020:05LHR - SIN

1 stop37h 55mSWISS

Thu 6/1100:05SIN - LHR

1 stop16h 00mSWISS

Deal found 16/9$1,013

Fri 13/320:40LHR - KUL

Nonstop12h 45mBritish Airways

Fri 27/319:55KUL - LHR

1 stop19h 05mBritish Airways

Deal found 16/9$1,208

Wed 26/1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Thu 11/1203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 17/9$911

Wed 15/1021:45LHR - HKT

1 stop19h 50mEtihad Airways

Thu 13/1103:10HKT - LHR

1 stop15h 55mEtihad Airways

Deal found 15/9$1,123

Thu 25/918:55LHR - SIN

1 stop19h 05mQatar Airways

Wed 1/1003:10SIN - LHR

1 stop17h 55mQatar Airways

Deal found 17/9$1,244

Sun 2/1118:40LHR - DPS

2 stops21h 40mMultiple Airlines

Sun 9/1119:00DPS - LHR

2 stops21h 20mMultiple Airlines

Deal found 17/9$1,249

Sat 29/1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Sun 14/1203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 17/9$911

Fri 20/220:40LHR - KUL

Nonstop12h 45mBritish Airways

Thu 5/323:20KUL - LHR

Nonstop14h 05mBritish Airways

Deal found 16/9$1,219

Wed 5/1114:25LHR - SIN

2 stops19h 35mSWISS

Wed 19/1100:05SIN - LHR

2 stops21h 35mSWISS

Deal found 17/9$1,117

Sun 11/113:55LHR - HKT

1 stop33h 20mEtihad Airways

Fri 16/115:30HKT - LHR

1 stop22h 10mEtihad Airways

Deal found 16/9$1,142

Mon 2/319:20LHR - BKK

1 stop16h 05mQatar Airways

Thu 19/308:15BKK - LHR

1 stop16h 10mQatar Airways

Deal found 17/9$1,268

Sat 14/320:40LHR - KUL

Nonstop12h 45mBritish Airways

Sun 15/323:20KUL - LHR

Nonstop14h 05mBritish Airways

Deal found 17/9$1,225

Tue 7/1021:45LHR - KUL

1 stop15h 05mEtihad Airways

Wed 5/1121:40KUL - LHR

1 stop17h 00mEtihad Airways

Deal found 16/9$1,142

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 18 September 2025.

Sun 23/1121:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Sun 30/1109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 17/9$1,190

Sun 4/120:40LHR - KUL

Nonstop12h 45mBritish Airways

Wed 21/123:20KUL - LHR

Nonstop14h 05mBritish Airways

Deal found 15/9$1,217

Tue 30/1220:40LHR - KUL

Nonstop12h 45mBritish Airways

Fri 27/323:20KUL - LHR

Nonstop14h 05mBritish Airways

Deal found 16/9$1,219

Fri 14/1120:40LHR - KUL

Nonstop12h 45mBritish Airways

Wed 3/1223:20KUL - LHR

Nonstop14h 05mBritish Airways

Deal found 17/9$1,223

Mon 16/220:40LHR - KUL

Nonstop12h 45mBritish Airways

Fri 12/622:50KUL - LHR

Nonstop13h 35mBritish Airways

Deal found 18/9$1,225

Sun 2/1121:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Mon 24/1109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 15/9$1,243

Fri 14/1110:40LHR - SIN

Nonstop13h 10mSingapore Airlines

Sat 22/1109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 17/9$1,246

Sat 29/1109:10LHR - SIN

Nonstop13h 00mSingapore Airlines

Sun 28/1223:25SIN - LHR

Nonstop14h 30mSingapore Airlines

Deal found 16/9$1,259

Wed 24/919:35LHR - SIN

Nonstop13h 30mBritish Airways

Wed 1/1023:20SIN - LHR

Nonstop14h 10mBritish Airways

Deal found 16/9$1,265

Tue 11/1120:10LHR - SIN

Nonstop13h 30mQantas Airways

Mon 17/1123:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 15/9$1,276

Mon 10/1120:10LHR - SIN

Nonstop13h 30mQantas Airways

Thu 13/1123:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 16/9$1,279

Mon 10/1120:10LHR - SIN

Nonstop13h 30mQantas Airways

Sun 16/1123:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 17/9$1,283

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 18 September 2025 and is based on user searches.

Sun 21/922:05LHR - SIN

1 stop30h 50mShenzhen Airlines

Fri 3/1003:30SIN - LHR

1 stop23h 20mShenzhen Airlines

Deal found 17/9$1,021

Fri 26/922:05LHR - BKK

1 stop22h 10mShenzhen Airlines

Sat 18/1003:15BKK - LHR

1 stop22h 45mShenzhen Airlines

Deal found 16/9$953

Fri 26/922:05LHR - BKK

1 stop22h 10mShenzhen Airlines

Tue 11/1103:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 18/9$956

Mon 29/914:45LHR - BKK

1 stop27h 10mEtihad Airways

Thu 13/1102:55BKK - LHR

1 stop18h 35mEtihad Airways

Deal found 16/9$1,033

Sat 4/1022:05LHR - BKK

1 stop22h 10mShenzhen Airlines

Tue 21/1019:30BKK - LHR

1 stop30h 30mShenzhen Airlines

Deal found 16/9$908

Sat 4/1022:05LHR - BKK

1 stop22h 10mShenzhen Airlines

Tue 4/1112:10BKK - LHR

1 stop38h 00mShenzhen Airlines

Deal found 18/9$967

Sun 5/1022:05LHR - BKK

1 stop22h 10mShenzhen Airlines

Thu 6/1119:30BKK - LHR

1 stop30h 40mShenzhen Airlines

Deal found 18/9$1,022

Thu 9/1021:45LHR - SIN

1 stop28h 55mEtihad Airways

Thu 23/1021:10SIN - LHR

1 stop25h 05mEtihad Airways

Deal found 17/9$1,015

Fri 31/1021:10LHR - BKK

1 stop31h 00mShenzhen Airlines

Thu 20/1119:30BKK - LHR

1 stop30h 40mShenzhen Airlines

Deal found 18/9$911

Fri 31/1021:00LHR - SIN

2 stops22h 10mMultiple Airlines

Fri 7/1109:30SIN - LHR

1 stop40h 20mMultiple Airlines

Deal found 16/9$1,006

Fri 31/1020:05LHR - SIN

1 stop37h 55mSWISS

Thu 6/1100:05SIN - LHR

1 stop16h 00mSWISS

Deal found 16/9$1,013

Fri 31/1017:40LHR - KUL

2 stops25h 40mAir China

Fri 7/1118:45KUL - LHR

2 stops31h 05mAir China

Deal found 16/9$1,027

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 18 September 2025.

Thu 2/1006:30LHR - BKK

2 stops34h 10mMultiple Airlines

Deal found 16/9$600

Mon 29/906:30LHR - SIN

3 stops27h 45mMultiple Airlines

Deal found 16/9$615

Tue 30/906:30LHR - SIN

3 stops27h 45mMultiple Airlines

Deal found 17/9$616

Sun 5/1006:30LHR - BKK

2 stops27h 40mMultiple Airlines

Deal found 16/9$627

Thu 2/1022:00LHR - BKK

1 stop37h 05mAir China

Deal found 16/9$633

Tue 7/1022:10LHR - SIN

1 stop28h 05mAir India

Deal found 16/9$637

Tue 28/1017:40LHR - BKK

1 stop23h 30mAir China

Deal found 16/9$639

Wed 5/1121:10LHR - BKK

1 stop31h 00mShenzhen Airlines

Deal found 18/9$643

Thu 15/121:35LHR - BKK

1 stop31h 55mAir China

Deal found 16/9$646

Tue 25/1121:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Deal found 16/9$654

Fri 23/117:40LHR - HKT

1 stop39h 50mAir China

Deal found 15/9$655

Thu 11/1219:00LHR - SIN

1 stop24h 20mMultiple Airlines

Deal found 16/9$658

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

Sun 30/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Sun 14/12

03:15-19:10

1 stop22h 55m

$911

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 29/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Tue 16/12

03:15-19:10

1 stop22h 55m

$911

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 19/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Tue 16/12

03:15-19:10

1 stop22h 55m

$911

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 28/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Tue 16/12

03:15-19:10

1 stop22h 55m

$911

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 26/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Thu 11/12

03:15-19:10

1 stop22h 55m

$911

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 29/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Sun 14/12

03:15-19:10

1 stop22h 55m

$911

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 3/11

18:40-18:00

1 stop15h 20m

Singapore Changi

Mon 24/11

00:05-13:40

2 stops21h 35m

$1,009

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 3/11

20:05-18:00

1 stop37h 55m

Singapore Changi

Sun 23/11

00:05-13:40

2 stops21h 35m

$1,009

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 31/10

20:05-18:00

1 stop37h 55m

Singapore Changi

Thu 6/11

00:05-08:05

1 stop16h 00m

$1,013

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 1/10

20:55-18:50

1 stop15h 55m

Bangkok Suvarnabhumi

Wed 29/10

08:55-18:10

1 stop16h 15m

$1,058

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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).

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

1,367 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Singapore Airlines

8.1

Very Good

1,367 reviews

Singapore Airlines

8.1

Very Good

1,367 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2024

NRT - LAX

Thai Airways

7.8

Good

350 reviews

Singapore Airlines

8.1

Very Good

1,367 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2024

NRT - LAX

Etihad Airways

7.4

Good

1,251 reviews

Singapore Airlines

8.1

Very Good

1,367 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2024

NRT - LAX

Related info for your journey

How long is the flight from London Heathrow Airport to Southeast Asia?
Shenzhen Airlines, SWISS, and Etihad Airways can get you from London Heathrow Airport to Southeast Asia in just under 15h 20m. Your travel time can differ by up to 6h 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. Gulf Air flights start at $672 while deals on SWISS start at $673 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 - Bangkok Suvarnabhumi. You may also consider London Heathrow - Singapore Changi or London Heathrow - Kuala Lumpur Intl.
What are the most reliable airlines from London Heathrow Airport to Southeast Asia?
Consider EVA Air (78%), Thai Airways (76%) or Air Canada (69%) 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 $1,191. While the most popular route (London Heathrow - Bangkok Suvarnabhumi) can be booked for $1,040 on average, our data indicates $1,477 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 Suvarnabhumi flights

Heathrow to Singapore flights

Gatwick to Suvarnabhumi flights

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Direct flights to

Top 2 airlines flying from Heathrow to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	Cheapest$1,055	Average$1,337	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Thai Airways	Cheapest$1,158	Average$1,201	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights

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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.

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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.

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Cheap flights from London Heathrow Airport to Southeast Asia from $600

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 2/10. 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 18 September 2025.

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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 18 September 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 18 September 2025.

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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.

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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 18 September 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 18 September 2025.