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

Shenzhen Airlines, Etihad Airways, 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 24h 10m. 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 £181. 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 £1,719, our data indicates the cheapest price to be £481. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £396.

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.

£241+ 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 3 September 2026.

Sun 13/922:10 -

1 stop35h 35m

Mon 28/908:20 -

1 stop18h 00m

Deal found 2/9£409

Sun 6/922:10 -

1 stop29h 25m

Sat 3/1011:55 -

1 stop38h 25m

Deal found 2/9£410

Mon 7/922:40 -

1 stop18h 40m

Sun 4/1006:25 -

1 stop21h 00m

Deal found 3/9£411

Wed 9/920:25 -

1 stop20h 55m

Sun 27/906:25 -

1 stop21h 00m

Deal found 2/9£412

Sun 6/922:40 -

1 stop18h 40m

Mon 28/906:25 -

1 stop18h 15m

Deal found 3/9£413

Sun 6/922:40 -

1 stop18h 40m

Sun 27/906:25 -

1 stop18h 15m

Deal found 2/9£413

Sun 22/1122:00 -

1 stop28h 50m

Thu 10/1203:20 -

1 stop23h 15m

Deal found 2/9£414

Tue 3/1121:35 -

2 stops30h 40m

Mon 30/1104:30 -

1 stop18h 25m

Deal found 1/9£414

Thu 10/922:00 -

2 stops31h 00m

Mon 14/918:15 -

2 stops32h 00m

Deal found 30/8£416

Tue 13/1022:40 -

1 stop18h 40m

Fri 23/1002:55 -

1 stop24h 20m

Deal found 2/9£416

Thu 1/1022:10 -

1 stop29h 55m

Thu 3/1219:45 -

1 stop29h 50m

Deal found 2/9£416

Tue 22/922:40 -

1 stop18h 40m

Fri 16/1002:55 -

1 stop24h 20m

Deal found 1/9£417

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 3 September 2026.

Wed 11/1121:10 -

1 stop37h 30m

Sun 15/1119:40 -

1 stop31h 30m

Deal found 31/8£554

Tue 22/914:45 -

1 stop15h 45m

Sat 3/1015:20 -

1 stop33h 25m

Deal found 31/8£579

Tue 3/1118:45 -

Nonstop13h 20m

Tue 17/1123:15 -

Nonstop14h 30m

Deal found 31/8£591

Thu 18/214:00 -

1 stop21h 55m

Thu 4/309:25 -

1 stop27h 55m

Deal found 1/9£632

Fri 27/1106:00 -

2 stops32h 40m

Mon 30/1119:45 -

3 stops25h 55m

Deal found 2/9£637

Mon 21/918:55 -

Nonstop11h 55m

Wed 14/1009:55 -

Nonstop13h 00m

Deal found 1/9£640

Mon 26/1017:30 -

2 stops21h 05m

Fri 13/1117:05 -

2 stops23h 00m

Deal found 1/9£655

Mon 14/916:35 -

1 stop23h 25m

Wed 23/923:30 -

1 stop20h 50m

Deal found 2/9£671

Mon 14/911:00 -

Nonstop12h 45m

Sun 27/923:20 -

Nonstop13h 35m

Deal found 1/9£692

Wed 27/120:35 -

1 stop16h 30m

Sat 15/509:50 -

Nonstop13h 45m

Deal found 1/9£696

Wed 6/108:45 -

1 stop28h 05m

Thu 4/222:30 -

1 stop30h 00m

Deal found 31/8£705

Mon 21/910:00 -

2 stops22h 05m

Mon 5/1016:05 -

2 stops29h 15m

Deal found 29/8£705

Sun 27/920:50 -

2 stops31h 10m

Wed 7/1010:05 -

2 stops39h 05m

Deal found 1/9£708

Mon 16/1122:00 -

1 stop15h 10m

Thu 19/1123:00 -

1 stop19h 40m

Deal found 2/9£723

Mon 1/307:05 -

2 stops20h 30m

Fri 12/312:35 -

1 stop16h 05m

Deal found 1/9£736

Sun 25/1006:20 -

1 stop16h 55m

Thu 12/1100:45 -

Nonstop13h 30m

Deal found 29/8£743

Thu 5/1109:05 -

2 stops25h 10m

Sat 14/1118:35 -

2 stops21h 45m

Deal found 2/9£751

Sat 28/1116:25 -

2 stops18h 10m

Tue 8/1218:20 -

2 stops23h 25m

Deal found 31/8£754

Mon 16/1121:20 -

Nonstop11h 40m

Mon 7/1212:40 -

Nonstop13h 25m

Deal found 2/9£819

Sun 18/1006:30 -

1 stop20h 00m

Sun 1/1123:15 -

1 stop23h 40m

Deal found 2/9£860

Fri 23/1018:20 -

1 stop16h 50m

Tue 3/1112:25 -

1 stop34h 35m

Deal found 1/9£910

Sat 27/221:15 -

1 stop29h 55m

Mon 15/312:10 -

1 stop36h 45m

Deal found 29/8£921

Sun 7/214:15 -

1 stop17h 10m

Thu 25/222:05 -

2 stops64h 20m

Deal found 31/8£934

Tue 27/1018:10 -

2 stops23h 05m

Wed 5/512:35 -

2 stops26h 35m

Deal found 30/8£1,017

Sun 22/1118:45 -

Nonstop13h 20m

Sun 29/1123:15 -

Nonstop14h 30m

Deal found 30/8£591

Sun 6/1215:30 -

1 stop20h 25m

Wed 16/1200:25 -

1 stop20h 35m

Deal found 30/8£640

Wed 6/113:55 -

1 stop25h 35m

Tue 2/301:30 -

1 stop18h 35m

Deal found 31/8£641

Mon 23/1111:00 -

Nonstop11h 20m

Wed 25/1105:00 -

1 stop33h 15m

Deal found 31/8£645

Wed 25/1118:45 -

Nonstop13h 20m

Thu 3/1223:15 -

Nonstop14h 30m

Deal found 29/8£592

Wed 17/217:40 -

1 stop22h 10m

Fri 12/300:10 -

1 stop22h 25m

Deal found 29/8£680

Find flight deals from Heathrow to Southeast Asia

Round-trip from	£409
One-way from	£241
Popular in	December
Cheapest in	September
Average price	£533

China Southern
13/9-28/9
2 total stops
53h 35m total
London to Southeast Asia

Search Deals

21/9-31/12
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

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Tue 20/10

22:15-01:10

1 stop19h 55m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

£273

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Wed 4/11

21:10-02:00

1 stop20h 50m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

£295

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Mon 5/10

08:25-07:10

1 stop16h 45m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£306

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Sat 5/12

21:10-17:15

1 stop36h 05m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

£316

LondonHo Chi Minh City

LHR London Heathrow - SGN Ho Chi Minh City

LHRSGN

London Heathrow

Sat 7/11

21:00-01:10

1 stop21h 10m

Ho Chi Minh City

Wed 31/12

00:00-17:00

Nonstop0h 00m

£318

LondonCebu City

LHR London Heathrow - CEB Cebu City Mactan Intl

LHRCEB

London Heathrow

Thu 17/9

20:50-06:25

3 stops50h 35m

Cebu City Mactan Intl

Wed 31/12

00:00-17:00

Nonstop0h 00m

£321

LondonManila

LHR London Heathrow - MNL Manila Ninoy Aquino Intl

LHRMNL

London Heathrow

Wed 23/9

20:45-22:00

1 stop18h 15m

Manila Ninoy Aquino Intl

Wed 31/12

00:00-17:00

Nonstop0h 00m

£322

LondonManila

LHR London Heathrow - MNL Manila Ninoy Aquino Intl

LHRMNL

London Heathrow

Sat 12/9

20:45-21:50

1 stop18h 05m

Manila Ninoy Aquino Intl

Wed 31/12

00:00-17:00

Nonstop0h 00m

£328

LondonPhuket City

LHR London Heathrow - HKT Phuket City

LHRHKT

London Heathrow

Mon 30/11

09:55-17:55

2 stops25h 00m

Phuket City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£331

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Tue 2/3

21:40-12:50

1 stop31h 10m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

£344

Flights are sorted by cheapest return flights first.

Deals found on 30/8

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-SIN

LHR-BKK

LHR-SGN

LHR-MNL

LHR-CEB

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-SIN

LHR-BKK

LHR-SGN

LHR-MNL

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 £616). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,027). 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

1,593 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

1,593 reviews

Singapore Airlines

8.2

Very Good

1,593 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

1,467 reviews

Singapore Airlines

8.2

Very Good

1,593 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

163 reviews

Singapore Airlines

8.2

Very Good

1,593 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

7.3

Good

3,730 reviews

Singapore Airlines

8.2

Very Good

1,593 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

1,531 reviews

Singapore Airlines

8.2

Very Good

1,593 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?
Shenzhen Airlines, Etihad Airways, 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 24h 10m. 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 £181. 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 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 £1,719, our data indicates the cheapest price to be £481. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £396.
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 £616). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,027). 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 Ahmedabad 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£282	Average£630	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Norse Atlantic UK	Cheapest£288	Average£584	FlexibilityNo cancel fee	On-timeN/A	Search Norse Atlantic UK flights
XiamenAir	Cheapest£295	Average£438	FlexibilityNo cancel fee	On-time49%	Search XiamenAir flights
Royal Jordanian	Cheapest£306	Average£700	FlexibilityNo cancel fee	On-time61%	Search Royal Jordanian flights
Hainan Airlines	Cheapest£361	Average£428	FlexibilityNo cancel fee	On-time61%	Search Hainan Airlines flights
Riyadh Air	Cheapest£395	Average£701	FlexibilityNo cancel fee	On-timeN/A	Search Riyadh Air flights
Condor	Cheapest£447	Average£613	FlexibilityNo cancel fee	On-time76%	Search Condor flights
ITA Airways	Cheapest£470	Average£544	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Finnair	Cheapest£472	Average£839	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 £241

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/9. 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 3 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 3 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 3 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 3 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 3 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 3 September 2026.

Last-minute flights from Heathrow to Southeast AsiaDiscover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 3 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 3 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 3 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 3 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 3 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

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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 3 September 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 3 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 3 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 3 September 2026.

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 3 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 3 September 2026.