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

Oman Air, Etihad Airways, and SWISS can get you from London Heathrow Airport to Southeast Asia in just under 14h 50m. Your travel time can differ by up to 29h. The distance between London Heathrow Airport and Southeast Asia is about 6585 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 £2,558, our data indicates the cheapest price to be £485. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £405.

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.

£247+ 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 17 August 2026.

Sun 27/1217:40 -

1 stop26h 20m

Fri 22/112:25 -

2 stops38h 15m

Deal found 17/8£420

Mon 7/922:40 -

1 stop31h 15m

Mon 14/913:25 -

1 stop34h 15m

Deal found 16/8£421

Tue 3/1122:00 -

1 stop29h 40m

Tue 1/1215:45 -

1 stop33h 50m

Deal found 13/8£422

Mon 2/1122:00 -

1 stop18h 15m

Wed 11/1108:15 -

1 stop17h 20m

Deal found 15/8£423

Sun 8/1122:00 -

1 stop29h 40m

Mon 16/1115:45 -

1 stop33h 50m

Deal found 13/8£423

Wed 4/1122:00 -

1 stop29h 40m

Wed 11/1119:45 -

1 stop29h 50m

Deal found 15/8£424

Tue 3/1120:25 -

1 stop32h 30m

Mon 23/1104:00 -

1 stop20h 50m

Deal found 17/8£425

Tue 17/1121:00 -

1 stop21h 45m

Sun 29/1102:45 -

1 stop21h 45m

Deal found 12/8£425

Thu 5/1121:00 -

1 stop21h 45m

Sun 15/1102:45 -

1 stop21h 45m

Deal found 13/8£426

Fri 13/1121:00 -

1 stop21h 45m

Thu 3/1202:45 -

1 stop21h 45m

Deal found 16/8£427

Mon 2/1120:25 -

1 stop23h 35m

Wed 18/1112:25 -

2 stops38h 15m

Deal found 14/8£428

Tue 15/920:25 -

1 stop33h 30m

Wed 14/1019:45 -

1 stop29h 35m

Deal found 16/8£428

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 17 August 2026.

Sat 7/1121:10 -

1 stop33h 45m

Tue 17/1118:40 -

1 stop31h 30m

Deal found 15/8£476

Sat 12/908:25 -

1 stop16h 30m

Sat 26/909:00 -

1 stop16h 10m

Deal found 16/8£521

Thu 4/220:55 -

1 stop14h 50m

Tue 9/203:20 -

1 stop19h 10m

Deal found 15/8£618

Mon 28/920:05 -

2 stops43h 50m

Mon 5/1017:40 -

3 stops27h 00m

Deal found 14/8£646

Thu 29/1010:20 -

1 stop17h 15m

Sat 28/1112:35 -

2 stops28h 00m

Deal found 16/8£658

Sun 7/208:05 -

1 stop15h 45m

Thu 18/208:20 -

1 stop20h 35m

Deal found 13/8£659

Tue 8/919:25 -

Nonstop13h 45m

Wed 30/923:25 -

Nonstop14h 10m

Deal found 14/8£660

Fri 30/1010:25 -

Nonstop12h 50m

Sun 8/1123:30 -

Nonstop14h 05m

Deal found 12/8£697

Thu 24/909:55 -

1 stop17h 35m

Fri 9/1011:25 -

2 stops26h 15m

Deal found 12/8£699

Wed 9/910:00 -

2 stops22h 05m

Wed 16/910:20 -

2 stops35h 00m

Deal found 12/8£700

Tue 27/1022:00 -

1 stop15h 10m

Tue 15/1208:55 -

1 stop18h 05m

Deal found 14/8£721

Wed 30/906:45 -

1 stop16h 05m

Wed 28/1000:20 -

Nonstop13h 55m

Deal found 15/8£734

Sat 9/116:35 -

1 stop35h 25m

Wed 10/312:10 -

1 stop33h 10m

Deal found 14/8£745

Sun 1/1111:00 -

Nonstop11h 20m

Sun 15/1123:00 -

1 stop39h 15m

Deal found 16/8£803

Mon 8/219:25 -

2 stops18h 15m

Mon 1/321:00 -

2 stops19h 20m

Deal found 12/8£820

Wed 3/220:15 -

2 stops38h 00m

Sun 28/220:30 -

2 stops25h 55m

Deal found 15/8£984

Thu 10/918:20 -

1 stop37h 40m

Mon 28/916:15 -

2 stops30h 20m

Deal found 16/8£1,018

Fri 12/221:10 -

1 stop21h 00m

Sat 13/318:40 -

1 stop31h 30m

Deal found 12/8£584

Sat 12/908:25 -

1 stop16h 45m

Sun 13/921:25 -

1 stop28h 45m

Deal found 13/8£626

Sun 27/919:25 -

Nonstop13h 45m

Sun 4/1023:25 -

Nonstop14h 10m

Deal found 13/8£661

Mon 5/1021:45 -

1 stop15h 00m

Fri 30/1009:30 -

1 stop16h 40m

Deal found 12/8£664

Mon 4/120:05 -

2 stops42h 30m

Mon 25/119:45 -

3 stops25h 55m

Deal found 16/8£688

Tue 1/1219:50 -

2 stops31h 45m

Tue 15/1212:35 -

2 stops28h 00m

Deal found 13/8£694

Mon 31/810:00 -

2 stops22h 05m

Thu 17/910:20 -

2 stops26h 35m

Deal found 15/8£701

Mon 2/1122:00 -

1 stop15h 10m

Mon 16/1123:00 -

1 stop19h 40m

Deal found 13/8£722

Fri 2/1021:45 -

1 stop15h 00m

Sat 31/1009:30 -

1 stop34h 35m

Deal found 13/8£664

Tue 1/908:25 -

1 stop17h 20m

Wed 9/909:20 -

1 stop14h 40m

Deal found 16/8£671

Sun 30/808:25 -

2 stops28h 40m

Tue 22/910:05 -

2 stops39h 05m

Deal found 16/8£672

Thu 27/808:40 -

1 stop18h 50m

Wed 9/911:25 -

2 stops26h 15m

Deal found 16/8£744

Mon 7/922:05 -

1 stop34h 00m

Wed 23/902:10 -

1 stop23h 40m

Deal found 16/8£691

Find flight deals from Heathrow to Southeast Asia

Round-trip from	£421
One-way from	£247
Popular in	December
Cheapest in	September
Average price	£693

Air China
5/2-24/2
3 total stops
73h 30m total
London to Southeast Asia

Search Deals

14/9
2 total stops
43h 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

Sat 7/11

21:10-13:55

1 stop33h 45m

Hanoi Noibai

Tue 17/11

18:40-19:10

1 stop31h 30m

£476

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sat 12/9

08:25-06:55

1 stop16h 30m

Bangkok Suvarnabhumi

Sat 26/9

09:00-19:10

1 stop16h 10m

£521

LondonHanoi

LHR London Heathrow - HAN Hanoi Noibai

LHRHAN

London Heathrow

Fri 12/2

21:10-01:10

1 stop21h 00m

Hanoi Noibai

Sat 13/3

18:40-19:10

1 stop31h 30m

£584

LondonKuala Lumpur

LHR London Heathrow - KUL Kuala Lumpur Intl

LHRKUL

London Heathrow

Thu 4/2

20:55-19:45

1 stop14h 50m

Kuala Lumpur Intl

Tue 9/2

03:20-14:30

1 stop19h 10m

£618

LondonKuala Lumpur

LHR London Heathrow - KUL Kuala Lumpur Intl

LHRKUL

London Heathrow

Sat 12/9

08:25-08:10

1 stop16h 45m

Kuala Lumpur Intl

Sun 13/9

21:25-19:10

1 stop28h 45m

£626

LondonManila

LHR London Heathrow - MNL Manila Ninoy Aquino Intl

LHRMNL

London Heathrow

Mon 28/9

20:05-22:55

2 stops43h 50m

Manila Ninoy Aquino Intl

Mon 5/10

17:40-13:40

3 stops27h 00m

£646

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Thu 29/10

10:20-10:35

1 stop17h 15m

Bangkok Suvarnabhumi

Sat 28/11

12:35-09:35

2 stops28h 00m

£658

LondonPhuket City

LHR London Heathrow - HKT Phuket City

LHRHKT

London Heathrow

Sun 7/2

08:05-06:50

1 stop15h 45m

Phuket City

Thu 18/2

08:20-21:55

1 stop20h 35m

£659

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Tue 8/9

19:25-16:10

Nonstop13h 45m

Singapore Changi

Wed 30/9

23:25-06:35

Nonstop14h 10m

£660

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Sun 27/9

19:25-16:10

Nonstop13h 45m

Singapore Changi

Sun 4/10

23:25-06:35

Nonstop14h 10m

£661

Flights are sorted by cheapest return flights first.

Deals found on 14/8

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-SGN

LHR-KUL

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-SGN

LHR-KUL

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 £613). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,023). 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 Sunday, which is when the least amount of flights are scheduled (8 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

1,584 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Singapore Airlines

8.2

Very Good

1,584 reviews

Singapore Airlines

8.2

Very Good

1,584 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Cathay Pacific

7.6

Good

1,453 reviews

Singapore Airlines

8.2

Very Good

1,584 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Qatar Airways

7.4

Good

3,740 reviews

Singapore Airlines

8.2

Very Good

1,584 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Air China

7.4

Good

160 reviews

Singapore Airlines

8.2

Very Good

1,584 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Etihad Airways

7.3

Good

1,504 reviews

Singapore Airlines

8.2

Very Good

1,584 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Related info for your journey

How long is the flight from London Heathrow Airport to Southeast Asia?
Oman Air, Etihad Airways, and SWISS can get you from London Heathrow Airport to Southeast Asia in just under 14h 50m. Your travel time can differ by up to 29h. The distance between London Heathrow Airport and Southeast Asia is about 6585 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 £2,558, our data indicates the cheapest price to be £485. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £405.
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 £613). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,023). 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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Gatwick to Islamabad flights

Heathrow to Bangalore flights

Stansted to Islamabad 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£281	Average£634	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Hainan Airlines	Cheapest£284	Average£419	FlexibilityNo cancel fee	On-time61%	Search Hainan Airlines flights
Norse Atlantic UK	Cheapest£291	Average£582	FlexibilityNo cancel fee	On-timeN/A	Search Norse Atlantic UK flights
XiamenAir	Cheapest£295	Average£433	FlexibilityNo cancel fee	On-time49%	Search XiamenAir flights
Royal Jordanian	Cheapest£405	Average£676	FlexibilityNo cancel fee	On-time61%	Search Royal Jordanian flights
Condor	Cheapest£446	Average£611	FlexibilityNo cancel fee	On-time76%	Search Condor flights
ITA Airways	Cheapest£469	Average£543	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Finnair	Cheapest£471	Average£826	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£477	Average£879	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 £247

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 14/9. 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 17 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 17 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 17 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 17 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 17 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 17 August 2026.

Last-minute flights from Heathrow to Southeast AsiaDiscover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 17 August 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 17 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 17 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 17 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 17 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 Sunday, which is when the least amount of flights are scheduled (8 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

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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 17 August 2026.

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Heathrow to Southeast Asia flights

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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 17 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 17 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 17 August 2026.

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 17 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 17 August 2026.