How long is the flight from London to Southeast Asia?

Airlines like Air India, British Airways, and KLM fly from London to Southeast Asia in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 5h 25m. The distance between London and Southeast Asia is about 10874 km. Both multi-stop and direct flights can be found to your destination and back.

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 reliable airlines from London to Southeast Asia?

The top 3 most reliable airlines when flying from London to Southeast Asia are Thai Airways (84%), EVA Air (84%) and Air Canada (82%).

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

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

Can I find deals for flights from London to Southeast Asia that include hotel bookings?

Yes. In addition to deals on London to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Southeast Asia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Southeast Asia.

Can I find deals for business class flights from London to Southeast Asia?

Yes. Cheapflights offers flight deals from London 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.

₹ 34,953+ Cheap Flights from London to Southeast Asia

Cheap flight deals from London to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to Southeast Asia
Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Fri 25/922:05 -

1 stop20h 55m

Thu 3/1213:40 -

1 stop37h 30m

Deal found 3/9₹ 64,615

Fri 25/922:05 -

1 stop31h 15m

Thu 26/1118:45 -

1 stop32h 25m

Deal found 4/9₹ 64,710

Sun 6/922:40 -

1 stop25h 10m

Sun 13/920:00 -

1 stop26h 20m

Deal found 1/9₹ 67,071

Thu 26/1108:50 -

1 stop16h 45m

Tue 22/1219:25 -

1 stop24h 40m

Deal found 3/9₹ 68,300

Fri 18/922:05 -

1 stop31h 15m

Sun 15/1103:00 -

1 stop24h 10m

Deal found 31/8₹ 68,394

Mon 16/1119:20 -

1 stop30h 15m

Mon 25/119:25 -

1 stop19h 15m

Deal found 4/9₹ 68,488

Wed 9/921:20 -

2 stops45h 35m

Wed 16/920:00 -

1 stop17h 55m

Deal found 1/9₹ 69,150

Thu 1/1010:00 -

1 stop19h 45m

Thu 8/1012:05 -

2 stops38h 25m

Deal found 31/8₹ 69,905

Mon 19/1010:20 -

1 stop25h 10m

Tue 27/1022:05 -

1 stop19h 05m

Deal found 4/9₹ 70,283

Wed 14/1010:20 -

1 stop25h 10m

Mon 26/1022:05 -

1 stop19h 05m

Deal found 2/9₹ 70,378

Sat 12/914:45 -

1 stop35h 55m

Fri 20/1119:25 -

1 stop19h 15m

Deal found 31/8₹ 70,661

Mon 7/921:20 -

2 stops33h 55m

Mon 14/920:00 -

1 stop17h 55m

Deal found 31/8₹ 70,756

Best flights from London to Southeast Asia
Discover carefully curated flight deals from London to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Wed 13/108:45 -

1 stop19h 10m

Thu 28/114:10 -

1 stop34h 40m

Deal found 2/9₹ 73,968

Tue 15/919:25 -

Nonstop13h 45m

Mon 21/923:25 -

Nonstop14h 10m

Deal found 3/9₹ 75,101

Wed 16/917:10 -

2 stops18h 05m

Wed 23/922:20 -

1 stop22h 25m

Deal found 1/9₹ 76,235

Wed 7/1010:00 -

1 stop19h 45m

Tue 27/1020:00 -

1 stop18h 35m

Deal found 4/9₹ 78,596

Wed 16/917:10 -

2 stops18h 05m

Wed 23/922:20 -

2 stops19h 25m

Deal found 1/9₹ 83,131

Sun 29/1118:45 -

Nonstop13h 20m

Sun 6/1223:15 -

Nonstop14h 30m

Deal found 31/8₹ 75,668

Tue 12/108:45 -

1 stop19h 10m

Sun 24/108:20 -

1 stop32h 40m

Deal found 4/9₹ 77,179

Wed 16/919:25 -

Nonstop13h 45m

Tue 29/923:25 -

Nonstop14h 10m

Deal found 1/9₹ 78,596

Sun 4/1022:00 -

Nonstop13h 40m

Thu 15/1022:40 -

Nonstop13h 55m

Deal found 4/9₹ 79,352

Thu 15/1009:30 -

2 stops19h 45m

Thu 22/1010:15 -

2 stops31h 00m

Deal found 31/8₹ 96,451

Fri 16/1022:20 -

1 stop35h 50m

Fri 23/1011:40 -

1 stop35h 50m

Deal found 1/9₹ 88,232

Thu 15/1013:50 -

2 stops20h 20m

Thu 22/1011:40 -

1 stop28h 20m

Deal found 31/8₹ 89,366

Wed 23/916:00 -

1 stop16h 45m

Wed 30/923:25 -

Nonstop14h 10m

Deal found 1/9₹ 81,619

Fri 16/1006:30 -

2 stops22h 45m

Sun 1/1111:30 -

2 stops25h 30m

Deal found 31/8₹ 98,812

Thu 17/919:25 -

Nonstop13h 45m

Thu 1/1023:25 -

Nonstop14h 10m

Deal found 1/9₹ 81,903

Fri 16/1008:25 -

2 stops24h 05m

Fri 23/1007:25 -

3 stops28h 00m

Deal found 1/9₹ 102,119

Wed 13/106:00 -

3 stops22h 25m

Thu 28/115:05 -

2 stops28h 10m

Deal found 2/9₹ 104,008

Tue 6/1022:00 -

Nonstop13h 40m

Sun 25/1017:25 -

1 stop19h 55m

Deal found 4/9₹ 89,271

Thu 1/1021:55 -

1 stop16h 20m

Thu 8/1023:25 -

Nonstop14h 10m

Deal found 31/8₹ 92,200

Wed 7/1021:55 -

1 stop16h 20m

Sun 25/1023:05 -

Nonstop14h 20m

Deal found 4/9₹ 93,711

Find flight deals from London to Southeast Asia

Round-trip from	₹ 64,615
One-way from	₹ 34,953
Popular in	December
Cheapest in	September
Average price	₹ 68,016

Shenzhen Airlines
25/9-3/12
2 total stops
58h 25m total
London to Southeast Asia

Search Deals

20/10-31/12
1 total stop
19h 55m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (₹ 602,281 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (₹ 250,377 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 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

₹ 36,748

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Thu 11/2

22:15-03:10

1 stop20h 55m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

₹ 39,393

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Thu 5/11

09:30-12:50

1 stop19h 20m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

₹ 43,644

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Wed 14/10

10:00-12:45

1 stop19h 45m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

₹ 43,833

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Thu 21/1

19:25-23:30

2 stops20h 05m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

₹ 58,003

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Fri 4/12

11:00-12:05

2 stops41h 05m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

₹ 64,332

Fastest return journey

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Thu 1/10

19:30-19:40

2 stops17h 10m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

₹ 64,899

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Wed 4/11

07:30-00:20

2 stops32h 50m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

₹ 71,417

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Wed 21/10

13:00-19:05

2 stops47h 05m

Singapore Changi

Wed 31/12

00:00-17:30

Nonstop0h 00m

₹ 71,984

LondonPort Blair

LHR London Heathrow - IXZ Port Blair

LHRIXZ

London Heathrow

Wed 13/1

08:45-09:25

1 stop19h 10m

Port Blair

Thu 28/1

14:10-19:20

1 stop34h 40m

₹ 73,968

Flights are sorted by cheapest return flights first.

Deals found on 31/8

Showing 1-10 of 30 resultsSorted by cheapest first

Best time to book a flight from London to Southeast Asia

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

LHR-SIN

LHR-IXZ

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 to Southeast Asia

LON-zzYJX

LHR-SIN

LHR-IXZ

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

Currently, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of ₹ 76,990). Flying from London to Southeast Asia in December is currently the most expensive (average of ₹ 129,325). 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 LON to YJX?

It’s typically best to fly out from London to Southeast Asia in the morning. Doing so could potentially save you 38% on the flight price compared to flying at midday, which is usually more expensive.

Weekly flight availability from London to Southeast Asia

The most flights from LON to zzYJX are scheduled on a Tuesday (11 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 to Southeast Asia?

The price you pay for your flight from London to Southeast Asia may vary depending on when you book. For the best chance of a lower fare, look to book 45 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

Get a feel of what it's like to fly with Singapore Airlines from London to Southeast Asia by reading reviews from past customers. You can also see how each airline stacks up in terms of 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,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

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,Jul 2025

DAD - SIN

Related info for your journey

How long is the flight from London to Southeast Asia?
Airlines like Air India, British Airways, and KLM fly from London to Southeast Asia in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 5h 25m. The distance between London and Southeast Asia is about 10874 km. Both multi-stop and direct flights can be found to your destination and back.
What are the most reliable airlines from London to Southeast Asia?
The top 3 most reliable airlines when flying from London to Southeast Asia are Thai Airways (84%), EVA Air (84%) and Air Canada (82%).
Can I find deals for flights from London to Southeast Asia that include hotel bookings?
Yes. In addition to deals on London to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Southeast Asia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Southeast Asia.
Can I find deals for business class flights from London to Southeast Asia?
Yes. Cheapflights offers flight deals from London 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 to Southeast Asia?
Currently, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of ₹ 76,990). Flying from London to Southeast Asia in December is currently the most expensive (average of ₹ 129,325). 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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Top 2 airlines flying from London to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	Cheapest₹ 64,734	Average₹ 80,455	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
EVA Air	Cheapest₹ 91,370	Average₹ 116,417	FlexibilityNo cancel fee	On-time74%	Search EVA Air flights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London 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 London 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 London.

Can Cheapflights find flights from London 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 London 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 London to Southeast Asia become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from London to Southeast Asia from ₹ 34,953

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Southeast Asia

Cheapest flights from London to Southeast AsiaExplore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Best flights from London to Southeast AsiaDiscover carefully curated flight deals from London to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Discover carefully curated flight deals from London to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Direct flights from London to Southeast AsiaExplore direct flight options from London to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 September 2026.

Explore direct flight options from London to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 September 2026.

Last-minute flights from London to Southeast AsiaDiscover last-minute flight deals from London to Southeast Asia. Data last updated 5 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Southeast Asia. Data last updated 5 September 2026 and is based on user searches.

One-way flights from London to Southeast AsiaSearch for one-way flight options from London to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

Search for one-way flight options from London to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

Find flight deals from London 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 to Southeast Asia that are best for you.

Best time to book a flight from London to Southeast Asia

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

Cheapflights Insights

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

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

Find hourly flight availability from London 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 5 September 2026.

It’s typically best to fly out from London to Southeast Asia in the morning. Doing so could potentially save you 38% on the flight price compared to flying at midday, which is usually more expensive.

Weekly flight availability from London to Southeast Asia

The most flights from LON to zzYJX are scheduled on a Tuesday (11 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 to Southeast Asia?

The price you pay for your flight from London to Southeast Asia may vary depending on when you book. For the best chance of a lower fare, look to book 45 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

Get a feel of what it's like to fly with Singapore Airlines from London to Southeast Asia by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London to Southeast Asia?

What are the most reliable airlines from London to Southeast Asia?

Can I find deals for flights from London to Southeast Asia that include hotel bookings?

How can I find direct flights from London to Southeast Asia?

Can I find deals for business class flights from London to Southeast Asia?

What is the cheapest month to book a flight from London 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 London 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 rental and/or hotel reservation to your travel itinerary.

Direct flights to

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

Search flights from London to Southeast Asia by cabin class

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

London and Southeast Asia flights

Browse other London and Southeast Asia flight options. Last updated on 5 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

London to Southeast Asia flights

Consider these flights travelling from London to Southeast Asia.

Top 2 airlines flying from London to Southeast Asia

Fly with Cheapflights

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

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

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

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

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Cheapest flights from London to Southeast Asia
Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Best flights from London to Southeast Asia
Discover carefully curated flight deals from London to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Direct flights from London to Southeast Asia
Explore direct flight options from London to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 September 2026.

Last-minute flights from London to Southeast Asia
Discover last-minute flight deals from London to Southeast Asia. Data last updated 5 September 2026 and is based on user searches.

One-way flights from London to Southeast Asia
Search for one-way flight options from London to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.