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

Shenzhen Airlines, Oman Air, and Scandinavian Airlines can get you from London Heathrow Airport to Southeast Asia in just under 16h 30m. Your travel time can differ by up to 21h. The distance between London Heathrow Airport and Southeast Asia is about 5947 mi. Both multi-stop and direct flights can be found to your destination and back.

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

The cheapest airline one-way is Hainan Airlines, with whom users have recently found tickets for as low as £180. However, be on the lookout for offers from SAUDIA and Air China, as they are both options that can get you from London Heathrow Airport to Southeast Asia for a low price.

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?

While some choose either London Heathrow - Bangkok Don Mueang Intl or London Heathrow - Kuala Lumpur Intl, London Heathrow - Bangkok Suvarnabhumi is the most popular route from London Heathrow Airport to Southeast Asia.

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

Looking for the cheapest flight from London Heathrow Airport to Southeast Asia? While on average our users pay £1,627, our data indicates the cheapest price to be £481. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £407.

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

The most popular airlines flying from London Heathrow Airport to Southeast Asia are Etihad Airways, Qatar Airways and Cathay Pacific. Something to consider prior to booking your flight.

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.

£236+ Cheap 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

Best

Direct

Last-minute

One-way

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 28 August 2026.

Mon 7/922:40 -

1 stop31h 15m

Mon 12/1002:10 -

3 stops24h 05m

Deal found 26/8£414

Sun 29/1121:00 -

1 stop34h 10m

Sat 12/1218:45 -

1 stop29h 45m

Deal found 24/8£416

Thu 12/1121:35 -

2 stops30h 40m

Fri 27/1112:25 -

2 stops38h 15m

Deal found 25/8£417

Wed 4/1117:40 -

1 stop26h 35m

Tue 10/1104:30 -

1 stop20h 20m

Deal found 27/8£418

Wed 4/1117:40 -

1 stop26h 35m

Tue 1/1204:30 -

1 stop20h 20m

Deal found 26/8£419

Sun 25/1022:00 -

1 stop18h 15m

Fri 6/1108:15 -

1 stop17h 20m

Deal found 27/8£419

Thu 1/1022:10 -

1 stop34h 35m

Mon 9/1108:15 -

1 stop17h 20m

Deal found 24/8£420

Fri 11/921:20 -

1 stop21h 00m

Fri 2/1002:25 -

1 stop23h 15m

Deal found 26/8£421

Sat 28/1121:35 -

2 stops46h 40m

Thu 10/1204:30 -

1 stop20h 20m

Deal found 27/8£421

Tue 10/1121:00 -

1 stop20h 00m

Wed 9/1202:05 -

1 stop23h 25m

Deal found 26/8£422

Wed 11/1117:40 -

1 stop26h 35m

Wed 25/1112:25 -

2 stops38h 15m

Deal found 27/8£422

Wed 2/922:40 -

1 stop18h 40m

Wed 9/906:25 -

1 stop21h 00m

Deal found 27/8£422

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 28 August 2026.

Wed 3/221:10 -

1 stop37h 30m

Tue 16/202:10 -

1 stop24h 00m

Deal found 25/8£478

Sat 10/1008:25 -

1 stop16h 30m

Wed 4/1109:00 -

1 stop16h 25m

Deal found 27/8£521

Fri 30/1006:40 -

1 stop20h 55m

Mon 30/1112:35 -

2 stops28h 00m

Deal found 26/8£578

Sat 28/1113:55 -

1 stop26h 55m

Sun 6/1202:40 -

1 stop35h 00m

Deal found 27/8£596

Sun 3/118:45 -

Nonstop13h 20m

Thu 28/123:05 -

Nonstop14h 20m

Deal found 27/8£617

Mon 22/214:15 -

1 stop21h 40m

Thu 11/309:25 -

1 stop19h 30m

Deal found 25/8£630

Tue 22/920:05 -

2 stops43h 50m

Wed 21/1017:40 -

3 stops27h 00m

Deal found 23/8£631

Wed 11/1109:30 -

2 stops22h 00m

Sun 15/1117:35 -

2 stops21h 00m

Deal found 27/8£644

Sun 14/217:40 -

1 stop21h 45m

Fri 26/323:50 -

1 stop22h 45m

Deal found 27/8£683

Wed 27/110:25 -

Nonstop12h 50m

Sat 15/523:30 -

Nonstop13h 25m

Deal found 27/8£686

Mon 23/1111:00 -

1 stop23h 10m

Wed 25/1123:00 -

1 stop39h 15m

Deal found 24/8£697

Tue 1/1222:00 -

1 stop26h 55m

Wed 3/308:55 -

1 stop18h 05m

Deal found 27/8£723

Fri 11/1207:15 -

1 stop16h 00m

Thu 24/1200:45 -

Nonstop13h 30m

Deal found 23/8£742

Mon 9/1117:05 -

2 stops17h 30m

Thu 26/1116:55 -

2 stops21h 45m

Deal found 27/8£871

Wed 23/917:00 -

2 stops22h 15m

Thu 1/1011:50 -

1 stop23h 50m

Deal found 23/8£973

Fri 5/221:10 -

1 stop37h 30m

Tue 16/202:10 -

1 stop24h 00m

Deal found 25/8£532

Sun 11/1018:35 -

2 stops37h 00m

Fri 23/1015:55 -

1 stop31h 35m

Deal found 25/8£1,088

Sun 1/1121:10 -

1 stop21h 10m

Sun 8/1102:20 -

1 stop23h 50m

Deal found 25/8£533

Mon 30/1114:55 -

1 stop21h 00m

Fri 4/1200:25 -

1 stop18h 50m

Deal found 27/8£639

Mon 19/1020:45 -

1 stop19h 45m

Sun 1/1101:30 -

1 stop24h 40m

Deal found 24/8£641

Sat 24/1015:35 -

2 stops37h 00m

Sat 7/1112:35 -

1 stop27h 45m

Deal found 24/8£646

Sat 5/1221:10 -

Nonstop12h 55m

Tue 22/1210:15 -

1 stop19h 40m

Deal found 27/8£650

Tue 15/920:50 -

2 stops40h 15m

Wed 23/910:05 -

2 stops39h 05m

Deal found 27/8£671

Wed 2/922:05 -

1 stop30h 25m

Wed 16/912:45 -

1 stop33h 35m

Deal found 26/8£682

Mon 12/1018:40 -

2 stops21h 40m

Wed 21/1017:40 -

3 stops27h 00m

Deal found 23/8£692

Fri 27/1121:20 -

2 stops34h 10m

Sun 6/1216:40 -

2 stops34h 25m

Deal found 23/8£1,402

Fri 30/1021:10 -

Nonstop12h 55m

Sun 8/1123:15 -

Nonstop14h 05m

Deal found 27/8£653

Sat 6/220:10 -

1 stop15h 45m

Thu 18/208:20 -

1 stop20h 35m

Deal found 25/8£656

Tue 24/1113:40 -

1 stop23h 30m

Tue 8/1223:00 -

1 stop21h 50m

Deal found 27/8£723

Sat 14/1117:30 -

2 stops34h 05m

Sat 28/1112:35 -

2 stops27h 20m

Deal found 27/8£667

Find flight deals from Heathrow to Southeast Asia

Round-trip from	£414
One-way from	£236
Popular in	December
Cheapest in	September
Average price	£692

7/9-12/10
4 total stops
55h 20m total
London to Southeast Asia

Search Deals

28/9
2 total stops
35h 10m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£35 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

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

Cheapest return flight

LondonHanoi

LHR London Heathrow - HAN Hanoi Noibai

LHRHAN

London Heathrow

Wed 3/2

21:10-17:40

1 stop37h 30m

Hanoi Noibai

Tue 16/2

02:10-19:10

1 stop24h 00m

£478

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sat 10/10

08:25-06:55

1 stop16h 30m

Bangkok Suvarnabhumi

Wed 4/11

09:00-18:25

1 stop16h 25m

£521

LondonHanoi

LHR London Heathrow - HAN Hanoi Noibai

LHRHAN

London Heathrow

Fri 5/2

21:10-17:40

1 stop37h 30m

Hanoi Noibai

Tue 16/2

02:10-19:10

1 stop24h 00m

£532

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sun 1/11

21:10-01:20

1 stop21h 10m

Bangkok Suvarnabhumi

Sun 8/11

02:20-19:10

1 stop23h 50m

£533

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Fri 30/10

06:40-10:35

1 stop20h 55m

Bangkok Suvarnabhumi

Mon 30/11

12:35-09:35

2 stops28h 00m

£578

LondonPhuket City

LHR London Heathrow - HKT Phuket City

LHRHKT

London Heathrow

Sat 28/11

13:55-23:50

1 stop26h 55m

Phuket City

Sun 6/12

02:40-06:40

1 stop35h 00m

£596

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Sun 3/1

18:45-16:05

Nonstop13h 20m

Singapore Changi

Thu 28/1

23:05-05:25

Nonstop14h 20m

£617

LondonPhuket City

LHR London Heathrow - HKT Phuket City

LHRHKT

London Heathrow

Mon 22/2

14:15-18:55

1 stop21h 40m

Phuket City

Thu 11/3

09:25-21:55

1 stop19h 30m

£630

LondonManila

LHR London Heathrow - MNL Manila Ninoy Aquino Intl

LHRMNL

London Heathrow

Tue 22/9

20:05-22:55

2 stops43h 50m

Manila Ninoy Aquino Intl

Wed 21/10

17:40-13:40

3 stops27h 00m

£631

LondonPhuket City

LHR London Heathrow - HKT Phuket City

LHRHKT

London Heathrow

Mon 30/11

14:55-18:55

1 stop21h 00m

Phuket City

Fri 4/12

00:25-12:15

1 stop18h 50m

£639

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

LHR-HAN

LHR-BKK

LHR-MNL

LHR-HKT

LHR-SIN

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

LHR-zzYJX

LHR-HAN

LHR-BKK

LHR-MNL

LHR-HKT

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 £614). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,020). 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?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Southeast Asia as you normally would.

Weekly flight availability from London Heathrow Airport to Southeast Asia

The most flights from LHR to zzYJX are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

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

The price you pay for your flight from London Heathrow Airport to Southeast Asia may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Southeast Asia

Check out reviews from past customers who have flown with Singapore Airlines,Cathay Pacific, andQatar Airways from London Heathrow Airport to Southeast Asia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SIN - JNB

Cabin crew in business class was just so amazing, friendly, caring and professional

Singapore Airlines

8.2

Very Good

1,588 reviews

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SIN - JNB

Cabin crew in business class was just so amazing, friendly, caring and professional

Cathay Pacific

7.6

Good

1,461 reviews

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SIN - JNB

Cabin crew in business class was just so amazing, friendly, caring and professional

Qatar Airways

7.4

Good

3,728 reviews

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SIN - JNB

Cabin crew in business class was just so amazing, friendly, caring and professional

Air China

7.4

Good

163 reviews

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SIN - JNB

Cabin crew in business class was just so amazing, friendly, caring and professional

Etihad Airways

7.3

Good

1,522 reviews

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2024

SIN - JNB

Cabin crew in business class was just so amazing, friendly, caring and professional

Related info for your journey

How long is the flight from London Heathrow Airport to Southeast Asia?
Shenzhen Airlines, Oman Air, and Scandinavian Airlines can get you from London Heathrow Airport to Southeast Asia in just under 16h 30m. Your travel time can differ by up to 21h. The distance between London Heathrow Airport and Southeast Asia is about 5947 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from London Heathrow Airport to Southeast Asia one-way?
The cheapest airline one-way is Hainan Airlines, with whom users have recently found tickets for as low as £180. However, be on the lookout for offers from SAUDIA and Air China, as they are both options that can get you from London Heathrow Airport to Southeast Asia for a low price.
What are the most popular routes from London Heathrow Airport to Southeast Asia?
While some choose either London Heathrow - Bangkok Don Mueang Intl or London Heathrow - Kuala Lumpur Intl, London Heathrow - Bangkok Suvarnabhumi is the most popular route from London Heathrow Airport to Southeast Asia.
What are the most reliable airlines from London Heathrow Airport to Southeast Asia?
The top 3 most reliable airlines when flying from London Heathrow Airport to Southeast Asia are EVA Air (85%), Thai Airways (85%) and Air Canada (80%).
What are the cheapest flights from London Heathrow Airport to Southeast Asia?
Looking for the cheapest flight from London Heathrow Airport to Southeast Asia? While on average our users pay £1,627, our data indicates the cheapest price to be £481. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £407.
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 £614). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,020). 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

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Stansted to Kuala Lumpur Intl flights

Luton to New Delhi flights

London City to Haneda flights

Heathrow to Hongqiao Intl flights

Top 10 airlines flying from Heathrow to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
HK Express	Cheapest£103	Average£125	FlexibilityNo cancel fee	On-time90%	Search HK Express flights
Scandinavian Airlines	Cheapest£280	Average£632	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Norse Atlantic UK	Cheapest£286	Average£580	FlexibilityNo cancel fee	On-timeN/A	Search Norse Atlantic UK flights
XiamenAir	Cheapest£293	Average£435	FlexibilityNo cancel fee	On-time49%	Search XiamenAir flights
Hainan Airlines	Cheapest£358	Average£424	FlexibilityNo cancel fee	On-time61%	Search Hainan Airlines flights
Royal Jordanian	Cheapest£403	Average£674	FlexibilityNo cancel fee	On-time61%	Search Royal Jordanian flights
Condor	Cheapest£444	Average£609	FlexibilityNo cancel fee	On-time76%	Search Condor flights
ITA Airways	Cheapest£467	Average£540	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Finnair	Cheapest£469	Average£827	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£475	Average£875	FlexibilityNo cancel fee	On-time75%	Search KLM 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?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Southeast Asia from Heathrow.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Southeast Asia, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Heathrow to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from London Heathrow Airport to Southeast Asia from £236

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 28/9. 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 28 August 2026.

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 28 August 2026.

Best flights from Heathrow to Southeast AsiaDiscover 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 28 August 2026.

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 28 August 2026.

Direct flights from Heathrow to Southeast AsiaExplore 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 28 August 2026.

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 28 August 2026.

Last-minute flights from Heathrow to Southeast AsiaDiscover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 28 August 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 28 August 2026 and is based on user searches.

One-way flights from Heathrow to Southeast AsiaSearch for one-way flight options from Heathrow to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 28 August 2026.

Search for one-way flight options from Heathrow to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 28 August 2026.

Find flight deals from Heathrow to Southeast Asia

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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

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 28 August 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Southeast Asia as you normally would.

Weekly flight availability from London Heathrow Airport to Southeast Asia

The most flights from LHR to zzYJX are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

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

The price you pay for your flight from London Heathrow Airport to Southeast Asia may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Southeast Asia

Related info for your journey

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?

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.

Complete your trip

Complete your trip to Southeast Asia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Heathrow to Southeast Asia by cabin class

Find flights from Heathrow to Southeast Asia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Southeast Asia flights

Browse other Heathrow and Southeast Asia flight options. Last updated on 28 August 2026.

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Heathrow to Southeast Asia flights

Consider these flights travelling from Heathrow to Southeast Asia.

Top 10 airlines flying from Heathrow to Southeast Asia

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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 28 August 2026.

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 28 August 2026.

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 28 August 2026.

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 28 August 2026 and is based on user searches.

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 28 August 2026.