How many flights depart from London to Southeast Asia on average per week?

The number of flights available between London and Southeast Asia is 240 per week as of June 2026. The most frequent departure day is Wed, with 15% of weekly flights leaving on this day.

How many flights depart from London to Southeast Asia on average per day?

34 flights are operational daily from London to Southeast Asia as of June 2026. The most popular departure time for this route is 22:00, with 63% of flights per day taking off in the evening.

What is the cheapest airline that flies from London to Southeast Asia?

China Eastern and Austrian Airlines are the most popular carriers operating from London to Southeast Asia

When did momondo last update prices for flights from London to Southeast Asia?

Prices for flights from London to Southeast Asia refresh daily.

How old do you have to be to fly from London to Southeast Asia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Southeast Asia.

What documentation or ID do you need to fly to Southeast Asia?

The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

₹ 42,056 Cheap Flights from London to Southeast Asia in 2026

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Find the cheapest flights from London to Southeast Asia

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

21:45 - 11:00

LHR

IXZ

32h 45m

1 stop

15:15 - 20:20

IXZ

LHR

33h 35m

1 stop

₹ 71,070Air India

Thu, 3 Sep - Sun, 20 Sep

13:50 - 11:00

LHR

IXZ

40h 40m

2 stops

15:15 - 20:20

IXZ

LHR

33h 35m

1 stop

₹ 71,827Air India

Thu, 3 Sep - Sun, 20 Sep

22:05 - 12:45

LHR

SIN

31h 40m

1 stop

20:00 - 06:55

SIN

LHR

17h 55m

1 stop

₹ 74,095Gulf Air

Thu, 3 Sep - Sat, 19 Sep

09:45 - 11:00

LHR

IXZ

20h 45m

1 stop

15:15 - 20:20

IXZ

LHR

33h 35m

1 stop

₹ 74,095Air India

Thu, 2 Jul - Mon, 6 Jul

17:30 - 17:05

LHR

SIN

15h 35m

1 stop

00:05 - 08:05

SIN

LHR

16h 00m

1 stop

₹ 74,189Multiple Airlines

Mon, 30 Nov - Wed, 17 Mar

13:50 - 11:00

LHR

IXZ

40h 40m

2 stops

11:40 - 10:15

IXZ

LHR

27h 05m

2 stops

₹ 74,189Air India

Thu, 3 Sep - Sun, 20 Sep

18:40 - 18:05

LHR

SIN

15h 25m

1 stop

23:55 - 08:45

SIN

LHR

16h 50m

1 stop

₹ 74,284Multiple Airlines

Tue, 1 Dec - Wed, 17 Mar

22:05 - 12:45

LHR

SIN

31h 40m

1 stop

20:00 - 15:20

SIN

LHR

26h 20m

1 stop

₹ 74,378Gulf Air

Tue, 8 Sep - Sun, 20 Sep

14:45 - 09:40

LHR

SIN

35h 55m

1 stop

19:25 - 14:30

SIN

LHR

27h 05m

1 stop

₹ 74,945Etihad Airways

Sat, 10 Oct - Sat, 7 Nov

18:45 - 16:05

LHR

SIN

13h 20mdirect

23:15 - 05:45

SIN

LHR

14h 30mdirect

₹ 75,701British Airways

Sun, 13 Dec - Thu, 14 Jan

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British Airways flights from London to Southeast Asia

Our best British Airways deals on London to Southeast Asia flight tickets

British Airways

13 Dec

LHR18:45London Heathrow

13h 20m

SIN16:05Singapore Changi

11 Jan

SIN23:15Singapore Changi

14h 30m

LHR05:45London Heathrow

₹ 75,701

British Airways

13 Dec

LHR18:45London Heathrow

13h 20m

SIN16:05Singapore Changi

29 Dec

SIN23:15Singapore Changi

14h 30m

LHR05:45London Heathrow

₹ 75,890

British Airways

30 Sept

LHR19:25London Heathrow

13h 45m

SIN16:10Singapore Changi

15 Oct

SIN23:25Singapore Changi

14h 10m

LHR06:35London Heathrow

₹ 75,985

Shenzhen Airlines flights from London to Southeast Asia

Our best Shenzhen Airlines deals on London to Southeast Asia flight tickets

Shenzhen Airlines

14 Oct

LHR22:05London Heathrow

35h 35m

1 stop

SIN16:40Singapore Changi

3 Nov

SIN18:30Singapore Changi

32h 40m

1 stop

LHR19:10London Heathrow

₹ 75,796

Shenzhen Airlines

30 Aug

LHR22:05London Heathrow

31h 15m

1 stop

SIN12:20Singapore Changi

4 Sept

SIN18:10Singapore Changi

32h 40m

1 stop

LHR19:50London Heathrow

₹ 76,363

Shenzhen Airlines

31 Oct

LHR21:10London Heathrow

36h 20m

1 stop

SIN17:30Singapore Changi

14 Nov

SIN18:30Singapore Changi

32h 40m

1 stop

LHR19:10London Heathrow

₹ 76,552

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 3/9

21:45-11:00

1 stop32h 45m

Port Blair

Sun 20/9

15:15-20:20

1 stop33h 35m

₹ 71,070

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 3/9

13:50-11:00

2 stops40h 40m

Port Blair

Sun 20/9

15:15-20:20

1 stop33h 35m

₹ 71,827

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 3/9

22:05-12:45

1 stop31h 40m

Singapore Changi

Sat 19/9

20:00-06:55

1 stop17h 55m

₹ 74,095

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 2/7

09:45-11:00

1 stop20h 45m

Port Blair

Mon 6/7

15:15-20:20

1 stop33h 35m

₹ 74,095

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 30/11

17:30-17:05

1 stop15h 35m

Singapore Changi

Wed 17/3

00:05-08:05

1 stop16h 00m

₹ 74,189

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 3/9

13:50-11:00

2 stops40h 40m

Port Blair

Sun 20/9

11:40-10:15

2 stops27h 05m

₹ 74,189

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 1/12

18:40-18:05

1 stop15h 25m

Singapore Changi

Wed 17/3

23:55-08:45

1 stop16h 50m

₹ 74,284

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 8/9

22:05-12:45

1 stop31h 40m

Singapore Changi

Sun 20/9

20:00-15:20

1 stop26h 20m

₹ 74,378

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 10/10

14:45-09:40

1 stop35h 55m

Singapore Changi

Sat 7/11

19:25-14:30

1 stop27h 05m

₹ 74,945

Fastest return journey

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 13/12

18:45-16:05

Nonstop13h 20m

Singapore Changi

Thu 14/1

23:15-05:45

Nonstop14h 30m

₹ 75,701

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Southeast Asia?

In general, November is the cheapest month to fly from London to Southeast Asia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 77,403. If you aren’t able to travel during the month of November, then book flights to Southeast Asia from London during September instead. Flights to Southeast Asia in September, while not as cheap as those in November, still average around ₹ 80,805.

What is the cheapest day to depart on your flight to Southeast Asia?

The cheapest day to depart from London to Southeast Asia is on a Sunday. Travellers who choose to depart for Southeast Asia on a Sunday will often find tickets for as low as ₹ 101,176. The most expensive day to fly to Southeast Asia is Thursday, with ticket prices averaging around ₹ 145,968.

What is the cheapest time of day to depart on your flight to Southeast Asia?

According to our data, the cheapest time of day to fly to Southeast Asia is in the evening. momondo users have found flights departing from London to Southeast Asia in the evening for as low as ₹ 116,469. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are ₹ 143,827 on average. Flights to Southeast Asia from London in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest London to Southeast Asia flight route?

Fly from London Gatwick to Bangkok Suvarnabhumi for the best London - Southeast Asia flight prices

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

You are more likely to see cheaper flights to Southeast Asia from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around ₹ 88,586 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from London for as low as ₹ 84,113 on momondo.

What cabin class options are available on London to Southeast Asia flights?

There are 2 cabin classes available to choose from on London to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between London to Southeast Asia.

Cheap London to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Southeast Asia

Fastest flight time	13h 30m
Direct flights	Every day
Airports in Southeast Asia	295 airports

The fastest flight from London to Southeast Asia takes 13h 30m

Direct flights go from London to Southeast Asia every day.

There are 295 airports in Southeast Asia. From London there are direct flights to Singapore Changi (SIN).

Search flight deals

Frequently asked questions about flying from London to Southeast Asia

When did momondo last update prices for flights from London to Southeast Asia?
Prices for flights from London to Southeast Asia refresh daily.
How old do you have to be to fly from London to Southeast Asia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London to Southeast Asia?
Based on momondo bookings for flights between London and Southeast Asia, the leading plane model is Boeing 787-9 Dreamliner, making up 16.86% of the total bookings. Other popular models include Airbus A350-1000 with 14.64%, Boeing 777 with 12.52%, and Airbus A321neo with 8.65%.

Best airlines flying from London to Southeast Asia

Compare and see reviews for airlines that fly from London to Southeast Asia with momondo

Airline	Rating	Free Cancellation	Price
Etihad Airways	PriceFrom ₹ 64,763	Free Cancellation	Rating 7.3 1,453 reviews		Search Etihad Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Southeast Asia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Southeast Asia from London.

Can I find flights from London to Southeast Asia with flexible booking policies on momondo?

Yes. All flights to Southeast Asia from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Southeast Asia?

momondo helps you find the best flight between London and Southeast Asia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Southeast Asia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Southeast Asia from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.