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

Airlines like Air India, Gulf Air, and SWISS fly from London Heathrow Airport to Southeast Asia in about 20h 40m. The time it takes to get you to your destination can typically vary by up to 17h 15m. Airlines will cover a distance of 9210 km. This flight may include one or multiple stops. Find deals

In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm. Find deals

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 reliable airlines from London Heathrow Airport to Southeast Asia?

No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to Southeast Asia consider choosing EVA Air(90%), Thai Airways(87%) or Air Canada(83%), as they are the most reliable in getting you off to your destination on time.

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.

₹ 37,038+ 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 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 7 December 2025.

Sat 6/1214:05LHR - SIN

1 stop18h 10mKLM

Sat 24/101:40SIN - LHR

1 stop17h 05mKLM

Deal found 6/12₹ 60,771

Wed 31/1221:10LHR - SIN

1 stop31h 00mShenzhen Airlines

Thu 15/103:00SIN - LHR

1 stop24h 10mShenzhen Airlines

Deal found 6/12₹ 61,490

Sat 6/1214:05LHR - SIN

2 stops18h 50mMultiple Airlines

Sun 18/110:55SIN - LHR

1 stop18h 30mMultiple Airlines

Deal found 6/12₹ 63,828

Mon 8/1209:30LHR - SIN

1 stop19h 00mGulf Air

Wed 21/120:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 6/12₹ 65,086

Sat 6/1216:25LHR - SIN

1 stop15h 50mKLM

Sat 13/1201:40SIN - LHR

1 stop22h 25mKLM

Deal found 5/12₹ 65,805

Sat 6/1206:30LHR - SIN

1 stop25h 45mMultiple Airlines

Fri 12/1210:55SIN - LHR

1 stop18h 30mMultiple Airlines

Deal found 5/12₹ 65,895

Sat 6/1214:05LHR - SIN

2 stops18h 50mMultiple Airlines

Sun 1/222:50SIN - LHR

1 stop17h 05mMultiple Airlines

Deal found 6/12₹ 67,963

Fri 5/1220:25LHR - SIN

2 stops36h 30mMultiple Airlines

Fri 12/1210:55SIN - LHR

1 stop18h 30mMultiple Airlines

Deal found 5/12₹ 68,772

Mon 8/1209:30LHR - SIN

1 stop19h 00mGulf Air

Tue 20/120:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 6/12₹ 69,042

Sun 28/1221:10LHR - SIN

1 stop36h 20mShenzhen Airlines

Tue 10/218:30SIN - LHR

1 stop32h 40mShenzhen Airlines

Deal found 5/12₹ 70,930

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 7 December 2025.

Tue 20/108:45LHR - IXZ

1 stop20h 40mAir India

Tue 27/111:30IXZ - LHR

1 stop38h 30mAir India

Deal found 6/12₹ 56,726

Mon 12/121:50LHR - SIN

1 stop30h 40mGulf Air

Tue 3/220:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 5/12₹ 59,063

Tue 27/120:05LHR - SIN

1 stop37h 55mSWISS

Tue 3/200:05SIN - LHR

2 stops21h 35mSWISS

Deal found 6/12₹ 65,626

Sun 1/320:10LHR - SIN

Nonstop13h 30mQantas Airways

Sun 15/323:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 5/12₹ 72,817

Tue 20/108:40LHR - IXZ

3 stops22h 50mMultiple Airlines

Tue 27/111:30IXZ - LHR

2 stops29h 05mMultiple Airlines

Deal found 6/12₹ 76,953

Sun 15/221:00LHR - SIN

Nonstop13h 25mBritish Airways

Wed 11/323:15SIN - LHR

Nonstop14h 40mBritish Airways

Deal found 6/12₹ 77,312

Thu 5/313:30LHR - IXZ

2 stops19h 25mAir India

Thu 19/309:40IXZ - LHR

1 stop15h 20mAir India

Deal found 6/12₹ 59,243

Tue 3/209:30LHR - SIN

1 stop19h 00mGulf Air

Thu 26/220:00SIN - LHR

1 stop26h 45mGulf Air

Deal found 7/12₹ 60,771

Wed 21/114:25LHR - SIN

2 stops19h 35mSWISS

Tue 27/100:05SIN - LHR

1 stop19h 10mSWISS

Deal found 6/12₹ 65,626

Sun 1/321:05LHR - IXZ

1 stop35h 50mAir India

Sun 15/311:30IXZ - LHR

1 stop29h 30mAir India

Deal found 5/12₹ 64,727

Mon 19/114:25LHR - SIN

2 stops19h 35mSWISS

Sun 25/100:05SIN - LHR

2 stops21h 35mSWISS

Deal found 5/12₹ 68,772

Sun 1/313:00LHR - SIN

1 stop24h 45mAir India

Sun 15/313:35SIN - LHR

2 stops25h 00mAir India

Deal found 5/12₹ 73,626

Mon 5/121:05LHR - IXZ

1 stop30h 05mAir India

Sat 10/109:40IXZ - LHR

2 stops55h 20mAir India

Deal found 5/12₹ 82,616

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 7 December 2025.

Wed 14/121:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Wed 21/109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 4/12₹ 71,918

Mon 16/309:10LHR - SIN

Nonstop13h 00mSingapore Airlines

Mon 30/309:00SIN - LHR

Nonstop13h 45mSingapore Airlines

Deal found 6/12₹ 72,098

Wed 28/110:40LHR - SIN

Nonstop13h 10mSingapore Airlines

Wed 4/209:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 5/12₹ 72,188

Sun 1/320:10LHR - SIN

Nonstop13h 30mQantas Airways

Sun 15/323:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 5/12₹ 72,817

Wed 18/220:10LHR - SIN

Nonstop13h 30mQantas Airways

Sun 15/323:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 6/12₹ 72,907

Tue 3/320:10LHR - SIN

Nonstop13h 30mQantas Airways

Tue 17/323:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 5/12₹ 73,177

Thu 23/420:35LHR - SIN

Nonstop13h 10mSingapore Airlines

Thu 28/509:00SIN - LHR

Nonstop13h 45mSingapore Airlines

Deal found 5/12₹ 73,267

Wed 29/422:05LHR - SIN

Nonstop13h 05mSingapore Airlines

Wed 6/509:00SIN - LHR

Nonstop13h 45mSingapore Airlines

Deal found 5/12₹ 73,357

Tue 3/321:00LHR - SIN

Nonstop13h 25mBritish Airways

Wed 11/323:15SIN - LHR

Nonstop14h 40mBritish Airways

Deal found 7/12₹ 73,806

Tue 3/220:10LHR - SIN

Nonstop13h 30mQantas Airways

Sun 8/223:05SIN - LHR

Nonstop15h 10mQantas Airways

Deal found 5/12₹ 74,975

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 7 December 2025 and is based on user searches.

Sat 6/1214:05LHR - SIN

1 stop18h 10mKLM

Sat 24/101:40SIN - LHR

1 stop17h 05mKLM

Deal found 6/12₹ 60,771

Mon 5/121:05LHR - IXZ

1 stop30h 05mAir India

Sat 10/109:40IXZ - LHR

2 stops55h 20mAir India

Deal found 5/12₹ 82,616

Wed 7/121:10LHR - SIN

1 stop31h 00mShenzhen Airlines

Fri 30/103:00SIN - LHR

1 stop24h 10mShenzhen Airlines

Deal found 5/12₹ 61,490

Sun 11/121:50LHR - SIN

1 stop30h 40mGulf Air

Tue 3/220:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 5/12₹ 59,423

Sun 11/121:50LHR - SIN

1 stop30h 40mGulf Air

Thu 29/120:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 6/12₹ 59,782

Sun 11/121:50LHR - SIN

1 stop30h 40mGulf Air

Thu 5/220:00SIN - LHR

1 stop26h 45mGulf Air

Deal found 5/12₹ 59,872

Mon 12/121:50LHR - SIN

1 stop30h 40mGulf Air

Tue 3/220:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 5/12₹ 59,063

Tue 13/109:30LHR - SIN

1 stop19h 00mGulf Air

Mon 2/220:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 6/12₹ 58,973

Tue 13/121:50LHR - SIN

1 stop30h 40mGulf Air

Sat 31/120:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 5/12₹ 61,760

Tue 20/108:45LHR - IXZ

1 stop20h 40mAir India

Tue 27/111:30IXZ - LHR

1 stop38h 30mAir India

Deal found 6/12₹ 56,726

Tue 20/108:40LHR - IXZ

3 stops22h 50mMultiple Airlines

Tue 27/111:30IXZ - LHR

2 stops29h 05mMultiple Airlines

Deal found 6/12₹ 76,953

Thu 22/109:30LHR - SIN

1 stop19h 00mGulf Air

Mon 26/120:00SIN - LHR

1 stop18h 35mGulf Air

Deal found 4/12₹ 58,793

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 7 December 2025.

Thu 26/319:00LHR - SIN

1 stop24h 20mMultiple Airlines

Deal found 5/12₹ 37,038

Sun 12/422:15LHR - SIN

1 stop19h 55mMultiple Airlines

Deal found 4/12₹ 37,218

Sat 18/417:50LHR - SIN

1 stop15h 50mLufthansa

Deal found 4/12₹ 38,297

Sun 22/209:30LHR - SIN

1 stop19h 00mGulf Air

Deal found 5/12₹ 39,106

Mon 12/109:30LHR - SIN

1 stop19h 00mGulf Air

Deal found 7/12₹ 39,196

Sun 15/321:50LHR - SIN

1 stop30h 40mGulf Air

Deal found 6/12₹ 39,285

Wed 7/121:10LHR - SIN

1 stop20h 50mShenzhen Airlines

Deal found 6/12₹ 39,645

Sat 21/209:30LHR - SIN

1 stop19h 00mGulf Air

Deal found 5/12₹ 42,072

Wed 15/414:25LHR - SIN

2 stops19h 40mSWISS

Deal found 4/12₹ 43,241

Wed 21/114:25LHR - SIN

2 stops19h 35mSWISS

Deal found 7/12₹ 46,837

Mon 13/414:25LHR - SIN

2 stops19h 40mSWISS

Deal found 4/12₹ 47,107

Wed 31/1221:10LHR - SIN

1 stop31h 00mShenzhen Airlines

Deal found 7/12₹ 48,545

Find flight deals from Heathrow to Southeast Asia

Round-trip from	₹ 56,726
One-way from	₹ 37,038
Popular in	December
Cheapest in	May
Average price	₹ 102,484

Air India
20/1-27/1
2 total stops
59h 10m total
London to Southeast Asia

Search Deals

26/3
1 total stop
24h 20m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (₹ 586,483 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (₹ 206,238 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

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

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 20/1

08:45-10:55

1 stop20h 40m

Port Blair

Tue 27/1

11:30-20:30

1 stop38h 30m

₹ 56,726

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 12/1

21:50-12:30

1 stop30h 40m

Singapore Changi

Tue 3/2

20:00-06:35

1 stop18h 35m

₹ 59,063

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 5/3

13:30-14:25

2 stops19h 25m

Port Blair

Thu 19/3

09:40-19:30

1 stop15h 20m

₹ 59,243

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 3/2

09:30-12:30

1 stop19h 00m

Singapore Changi

Thu 26/2

20:00-14:45

1 stop26h 45m

₹ 60,771

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 1/3

21:05-14:25

1 stop35h 50m

Port Blair

Sun 15/3

11:30-11:30

1 stop29h 30m

₹ 64,727

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 27/1

20:05-18:00

1 stop37h 55m

Singapore Changi

Tue 3/2

00:05-13:40

2 stops21h 35m

₹ 65,626

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 21/1

14:25-18:00

2 stops19h 35m

Singapore Changi

Tue 27/1

00:05-11:15

1 stop19h 10m

₹ 65,626

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 19/1

14:25-18:00

2 stops19h 35m

Singapore Changi

Sun 25/1

00:05-13:40

2 stops21h 35m

₹ 68,772

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 1/3

20:10-17:40

Nonstop13h 30m

Singapore Changi

Sun 15/3

23:05-06:15

Nonstop15h 10m

₹ 72,817

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 1/3

13:00-21:45

1 stop24h 45m

Singapore Changi

Sun 15/3

13:35-06:35

2 stops25h 00m

₹ 73,626

Flights are sorted by cheapest return flights first.

Deals found on 5/12

Showing 1-10 of 25 results

Best time to book a flight from Heathrow to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Heathrow with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Southeast Asia

What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of ₹ 44,769). Flying from London Heathrow Airport to Southeast Asia in July is currently the most expensive (average of ₹ 65,895). 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?

One of the essential ways to save on airfare from London Heathrow Airport to Southeast Asia is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at midday could potentially save you up to 19% on airfare.

Weekly flight availability from London Heathrow Airport to Southeast Asia

The most flights from LHR to zzYJX are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Related info for your journey

How long is the flight from London Heathrow Airport to Southeast Asia?
Airlines like Air India, Gulf Air, and SWISS fly from London Heathrow Airport to Southeast Asia in about 20h 40m. The time it takes to get you to your destination can typically vary by up to 17h 15m. Airlines will cover a distance of 9210 km. This flight may include one or multiple stops.
What are the most reliable airlines from London Heathrow Airport to Southeast Asia?
No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to Southeast Asia consider choosing EVA Air(90%), Thai Airways(87%) or Air Canada(83%), as they are the most reliable in getting you off to your destination on time.
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 ₹ 44,769). Flying from London Heathrow Airport to Southeast Asia in July is currently the most expensive (average of ₹ 65,895). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Direct flights to

Top airline flying from Heathrow to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
EVA Air	Cheapest₹ 86,951	Average₹ 116,487	FlexibilityNo cancel fee	On-time74%	Search EVA Air flights

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Southeast Asia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Southeast Asia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Southeast Asia for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to Southeast Asia from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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 ₹ 37,038

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 26/3. 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 7 December 2025.

Explore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 December 2025.

Find flight deals from Heathrow to Southeast Asia

Keep the following information in mind while searching for Heathrow to Southeast Asia flight deals. Data was last updated 7 December 2025.

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

Everything you need to know about your flight from London Heathrow Airport to Southeast Asia

What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?

What is the cheapest time of day to fly from LHR to YJX?

Find hourly flight availability from Heathrow to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 December 2025.

Weekly flight availability from London Heathrow Airport to Southeast Asia

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

What are the most reliable airlines 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.

Top airline flying from Heathrow to Southeast Asia

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Southeast Asia?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Southeast Asia?

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

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

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Cheapest flights from Heathrow to Southeast Asia
Explore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 December 2025.