Question 1

What are the cheapest airlines to fly from London to Southeast Asia one-way?

Accepted Answer

The cheapet airlines for a one-way flight from London to Southeast Asia are SWISS (S$ 441), Gulf Air (S$ 503), and Malaysia Airlines (S$ 528).

Question 2

How far ahead should I book a flight from London to Southeast Asia?

Accepted Answer

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Southeast Asia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 3

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

Accepted Answer

Currently, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of S$ 1,058). Flying from London to Southeast Asia in December is currently the most expensive (average of S$ 1,762). 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.

Question 4

Weekly flight availability from London to Southeast Asia

Accepted Answer

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).

Question 5

E

Accepted Answer

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.

Question 6

E

Accepted Answer

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).

Question 7

What are the most popular routes from London to Southeast Asia?

Accepted Answer

The most popular flight routes from London to Southeast Asia are London Heathrow - Singapore Changi, London Gatwick - Singapore Changi and London Stansted - Singapore Changi.

Question 8

What are the cheapest flights from London to Southeast Asia?

Accepted Answer

While on average a flight from London to Southeast Asia is generally S$ 1,395, our data shows the cheapest flight currently is S$ 981. When looking at the most popular route, (London Heathrow - Singapore Changi), you can expect to pay S$ 682 for that flight.

Question 9

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

Accepted Answer

Consider Thai Airways (81%), Air Canada (78%) or TAP AIR PORTUGAL (78%) when booking your flight. These represent the most reliable airlines when flying from London to Southeast Asia.

Question 10

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

Accepted Answer

When booking a flight from London to Southeast Asia, you may want to consider flying on British Airways, Singapore Airlines or Gulf Air as they are the most popular for this route.

Question 11

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

Accepted Answer

One of the essential ways to save on airfare from London 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 17% on airfare.

Question 12

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

Accepted Answer

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

Question 13

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

Accepted Answer

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.

Question 14

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

Accepted Answer

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.

Question 15

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

Accepted Answer

When you search for this flight from London 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.

Question 16

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

Accepted Answer

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to Southeast Asia.

Question 17

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

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Southeast Asia flexibly with Cheapflights today.

Question 18

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

Accepted Answer

Yes! Start tracking prices for London 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.

Popular in	December
Cheapest in	September
Average price	S$ 1,040

Airline	Cheapest	Average	Flexibility	On-time
Hainan Airlines	CheapestS$ 372	AverageS$ 853	FlexibilityNo cancel fee	On-time61%	Search Hainan Airlines flights
Gulf Air	CheapestS$ 815	AverageS$ 961	FlexibilityNo cancel fee	On-time67%	Search Gulf Air flights
Singapore Airlines	CheapestS$ 973	AverageS$ 1,553	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
British Airways	CheapestS$ 1,011	AverageS$ 1,194	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Qantas Airways	CheapestS$ 1,096	AverageS$ 1,375	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
SWISS	CheapestS$ 1,530	AverageS$ 2,124	FlexibilityNo cancel fee	On-time79%	Search SWISS flights

Cheap flights from London to Southeast Asia

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Cheapflights Insights

How far ahead should I book a flight from London to Southeast Asia?

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Southeast Asia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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?

One of the essential ways to save on airfare from London 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 17% on airfare.

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).

Reviews of airlines servicing Southeast Asia

Read reviews from past customers who have flown with Singapore Airlines,SWISS, andAir China from London to Southeast Asia. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What are the cheapest airlines to fly from London to Southeast Asia one-way?

What are the most popular routes from London to Southeast Asia?

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

What are the cheapest flights 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?

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Alternative routes for London to Southeast Asia

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Complete your trip

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London and Southeast Asia flights

Browse other London and Southeast Asia flight options. Last updated on 20 October 2026.

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Top 6 airlines flying from London to Southeast Asia

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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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