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

Shenzhen Airlines, Oman Air, and British Airways can get you from London Heathrow Airport to Southeast Asia in just under 13h 20m. Your travel time can differ by up to 18h. The distance between London Heathrow Airport and Southeast Asia is about 6757 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 Shenzhen Airlines and SAUDIA, 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 £1,688, our data indicates the cheapest price to be £479. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £376.

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.

£240+ 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 9 September 2026.

Tue 22/922:10 -

1 stop18h 05m

Tue 13/1008:20 -

1 stop18h 00m

Deal found 9/9£402

Sat 19/920:25 -

1 stop20h 55m

Fri 25/902:55 -

1 stop24h 20m

Deal found 9/9£404

Sun 13/922:10 -

1 stop21h 15m

Mon 28/911:55 -

1 stop38h 25m

Deal found 9/9£407

Sun 6/922:40 -

1 stop18h 40m

Mon 28/902:55 -

1 stop24h 20m

Deal found 5/9£408

Wed 25/1122:00 -

1 stop28h 50m

Sun 6/1217:55 -

1 stop32h 40m

Deal found 9/9£410

Tue 15/922:00 -

1 stop20h 30m

Mon 12/1002:55 -

1 stop24h 20m

Deal found 7/9£410

Sun 22/1122:00 -

1 stop29h 40m

Sun 6/1215:45 -

1 stop33h 50m

Deal found 9/9£410

Sun 6/920:25 -

1 stop20h 55m

Wed 30/906:25 -

1 stop21h 00m

Deal found 5/9£411

Tue 15/922:00 -

2 stops31h 00m

Wed 30/913:25 -

1 stop37h 00m

Deal found 8/9£411

Thu 29/1021:30 -

1 stop32h 00m

Tue 1/1219:30 -

1 stop29h 20m

Deal found 9/9£411

Sun 20/922:10 -

1 stop18h 05m

Mon 28/917:45 -

1 stop32h 35m

Deal found 7/9£412

Tue 3/1121:30 -

2 stops30h 45m

Mon 23/1104:30 -

1 stop18h 25m

Deal found 9/9£412

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 9 September 2026.

Sun 1/1121:10 -

1 stop31h 20m

Fri 13/1103:00 -

1 stop24h 10m

Deal found 9/9£500

Wed 14/1020:50 -

1 stop28h 05m

Fri 30/1009:00 -

1 stop27h 55m

Deal found 7/9£520

Fri 29/109:30 -

2 stops22h 00m

Mon 15/217:35 -

2 stops29h 10m

Deal found 7/9£557

Thu 29/1018:45 -

Nonstop13h 20m

Thu 5/1123:05 -

Nonstop14h 20m

Deal found 6/9£590

Mon 21/914:45 -

1 stop15h 45m

Sun 4/1003:20 -

1 stop15h 25m

Deal found 4/9£596

Thu 26/1107:05 -

2 stops20h 30m

Tue 8/1212:35 -

2 stops27h 20m

Deal found 7/9£630

Fri 13/1108:35 -

1 stop15h 15m

Tue 24/1100:25 -

1 stop18h 50m

Deal found 8/9£638

Tue 3/1111:00 -

Nonstop12h 10m

Mon 9/1100:20 -

Nonstop13h 55m

Deal found 9/9£639

Sun 22/1117:05 -

2 stops19h 40m

Thu 11/223:50 -

1 stop17h 10m

Deal found 9/9£644

Mon 22/211:10 -

2 stops22h 50m

Wed 17/319:55 -

2 stops20h 10m

Deal found 6/9£645

Tue 13/1016:35 -

1 stop24h 15m

Thu 29/1012:10 -

1 stop34h 25m

Deal found 9/9£666

Thu 14/118:40 -

2 stops20h 00m

Tue 19/119:45 -

3 stops25h 55m

Deal found 8/9£667

Wed 7/1022:40 -

1 stop27h 05m

Wed 28/1004:35 -

1 stop18h 20m

Deal found 4/9£691

Wed 4/1115:50 -

1 stop21h 20m

Tue 10/1123:00 -

1 stop21h 50m

Deal found 4/9£721

Sun 10/117:30 -

2 stops21h 10m

Mon 14/617:40 -

2 stops22h 00m

Deal found 6/9£725

Tue 10/1114:50 -

2 stops18h 05m

Mon 16/1109:15 -

2 stops20h 25m

Deal found 5/9£750

Wed 23/921:35 -

Nonstop11h 55m

Tue 29/912:45 -

Nonstop12h 35m

Deal found 4/9£817

Wed 7/1013:00 -

2 stops45h 40m

Fri 16/1018:50 -

1 stop30h 20m

Deal found 9/9£853

Tue 3/1118:10 -

2 stops23h 05m

Sat 21/1108:00 -

1 stop32h 10m

Deal found 9/9£915

Sat 26/921:00 -

2 stops38h 15m

Mon 5/1021:10 -

2 stops26h 50m

Deal found 4/9£931

Wed 23/921:10 -

1 stop34h 25m

Fri 16/1015:55 -

1 stop31h 35m

Deal found 7/9£1,001

Wed 14/1011:20 -

1 stop18h 50m

Wed 28/1014:00 -

1 stop23h 55m

Deal found 7/9£1,060

Wed 11/1121:10 -

1 stop21h 40m

Thu 10/1202:50 -

1 stop23h 20m

Deal found 8/9£548

Mon 21/921:45 -

1 stop20h 05m

Sat 3/1003:20 -

1 stop15h 25m

Deal found 4/9£596

Tue 6/1022:00 -

Nonstop13h 40m

Sat 24/1023:25 -

Nonstop14h 10m

Deal found 4/9£639

Fri 19/221:40 -

2 stops33h 50m

Wed 10/317:35 -

2 stops29h 10m

Deal found 6/9£647

Thu 1/1014:45 -

1 stop15h 45m

Mon 12/1015:20 -

1 stop21h 40m

Deal found 5/9£596

Mon 23/1117:40 -

1 stop21h 45m

Wed 25/1123:50 -

1 stop22h 45m

Deal found 9/9£670

Wed 11/1108:25 -

2 stops27h 40m

Tue 8/1210:15 -

2 stops26h 40m

Deal found 7/9£671

Tue 1/1209:00 -

3 stops31h 25m

Mon 14/1219:55 -

2 stops20h 10m

Deal found 5/9£674

Find flight deals from Heathrow to Southeast Asia

Round-trip from	£402
One-way from	£240
Popular in	December
Cheapest in	September
Average price	£531

China Southern
22/9-13/10
2 total stops
36h 05m total
London to Southeast Asia

Search Deals

20/9-31/12
2 total stops
38h 00m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£36 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

LondonHo Chi Minh City

LHR London Heathrow - SGN Ho Chi Minh City

LHRSGN

London Heathrow

Sat 19/9

20:50-22:20

3 stops43h 30m

Ho Chi Minh City

Wed 31/12

00:00-17:00

Nonstop0h 00m

£275

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Sun 27/9

12:35-13:50

1 stop18h 15m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

£294

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Mon 28/9

22:05-12:45

1 stop31h 40m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

£305

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sun 11/10

08:25-06:55

1 stop16h 30m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£309

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Thu 29/10

20:05-06:45

1 stop27h 40m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£310

LondonPhuket City

LHR London Heathrow - HKT Phuket City

LHRHKT

London Heathrow

Fri 9/10

13:15-07:25

1 stop36h 10m

Phuket City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£328

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Sat 17/10

22:15-01:10

1 stop19h 55m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

£331

LondonKuala Lumpur

LHR London Heathrow - KUL Kuala Lumpur Intl

LHRKUL

London Heathrow

Sun 11/10

20:25-23:00

1 stop19h 35m

Kuala Lumpur Intl

Wed 31/12

00:00-17:30

Nonstop0h 00m

£348

LondonHanoi

LHR London Heathrow - HAN Hanoi Noibai

LHRHAN

London Heathrow

Tue 20/10

22:40-08:50

2 stops28h 10m

Hanoi Noibai

Wed 31/12

00:00-17:00

Nonstop0h 00m

£350

LondonPhuket City

LHR London Heathrow - HKT Phuket City

LHRHKT

London Heathrow

Sun 18/10

21:20-22:45

1 stop19h 25m

Phuket City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£351

Flights are sorted by cheapest return flights first.

Deals found on 9/9

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-SGN

LHR-SIN

LHR-BKK

LHR-HKT

LHR-KUL

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-SGN

LHR-SIN

LHR-BKK

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 £617). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,024). 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, andAir China 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

1,599 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

1,599 reviews

Singapore Airlines

8.2

Very Good

1,599 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

1,480 reviews

Singapore Airlines

8.2

Very Good

1,599 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

7.5

Good

164 reviews

Singapore Airlines

8.2

Very Good

1,599 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

3,734 reviews

Singapore Airlines

8.2

Very Good

1,599 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

1,534 reviews

Singapore Airlines

8.2

Very Good

1,599 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 British Airways can get you from London Heathrow Airport to Southeast Asia in just under 13h 20m. Your travel time can differ by up to 18h. The distance between London Heathrow Airport and Southeast Asia is about 6757 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 Shenzhen Airlines and SAUDIA, 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 Thai Airways (84%), EVA Air (84%) and Air Canada (82%).
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 £1,688, our data indicates the cheapest price to be £479. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £376.
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 £617). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,024). 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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Heathrow to Hyderabad 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
Norse Atlantic UK	Cheapest£279	Average£584	FlexibilityNo cancel fee	On-timeN/A	Search Norse Atlantic UK flights
XiamenAir	Cheapest£294	Average£436	FlexibilityNo cancel fee	On-time49%	Search XiamenAir flights
Royal Jordanian	Cheapest£305	Average£697	FlexibilityNo cancel fee	On-time61%	Search Royal Jordanian flights
Scandinavian Airlines	Cheapest£337	Average£616	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Hainan Airlines	Cheapest£359	Average£426	FlexibilityNo cancel fee	On-time61%	Search Hainan Airlines flights
Riyadh Air	Cheapest£395	Average£554	FlexibilityNo cancel fee	On-timeN/A	Search Riyadh Air flights
Condor	Cheapest£445	Average£611	FlexibilityNo cancel fee	On-time76%	Search Condor flights
ITA Airways	Cheapest£468	Average£542	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Finnair	Cheapest£471	Average£837	FlexibilityNo cancel fee	On-time76%	Search Finnair 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 £240

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/9. 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 9 September 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 9 September 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 9 September 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 9 September 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 9 September 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 9 September 2026.

Last-minute flights from Heathrow to Southeast AsiaDiscover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 9 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 9 September 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 9 September 2026.

Search for one-way flight options from Heathrow to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 9 September 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 9 September 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 9 September 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 9 September 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 9 September 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 9 September 2026.

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 9 September 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 9 September 2026.