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 May 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

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

Gulf Air, Qantas Airways, and Air India are the most popular carriers operating from London to Southeast Asia

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 May 2026. The most popular departure time for this route is 22:00, with 64% of flights per day taking off in the evening.

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.

₹ 42,161 Cheap Flights from London to Southeast Asia in 2026

1 adult

Find the cheapest flights from London to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

22:05 - 02:00

LHR

SIN

20h 55m

1 stop

18:30 - 19:10

SIN

LHR

32h 40m

1 stop

₹ 67,230Shenzhen Airlines

Wed, 30 Sep - Thu, 29 Oct

22:05 - 12:20

LHR

SIN

31h 15m

1 stop

03:00 - 20:00

SIN

LHR

24h 00m

1 stop

₹ 67,325Shenzhen Airlines

Fri, 25 Sep - Thu, 8 Oct

22:05 - 12:45

LHR

SIN

31h 40m

1 stop

20:00 - 15:20

SIN

LHR

26h 20m

1 stop

₹ 68,939Gulf Air

Thu, 28 May - Thu, 4 Jun

22:05 - 12:45

LHR

SIN

31h 40m

1 stop

20:00 - 15:20

SIN

LHR

26h 20m

1 stop

₹ 69,034Gulf Air

Thu, 28 May - Thu, 4 Jun

21:00 - 05:25

LHR

SIN

24h 25m

1 stop

23:00 - 17:30

SIN

LHR

26h 30m

1 stop

₹ 71,028China Eastern

Wed, 28 Oct - Wed, 11 Nov

21:20 - 05:25

LHR

SIN

25h 05m

1 stop

00:55 - 18:40

SIN

LHR

24h 45m

1 stop

₹ 71,123China Eastern

Mon, 25 May - Tue, 9 Jun

14:00 - 11:00

LHR

IXZ

16h 30m

1 stop

11:40 - 11:30

IXZ

LHR

28h 20m

1 stop

₹ 73,972Air India

Thu, 11 Jun - Thu, 18 Jun

14:00 - 11:00

LHR

IXZ

16h 30m

1 stop

11:40 - 10:15

IXZ

LHR

27h 05m

2 stops

₹ 74,637Air India

Thu, 11 Jun - Thu, 18 Jun

10:00 - 14:15

LHR

IXZ

23h 45m

2 stops

09:40 - 06:55

IXZ

LHR

25h 45m

3 stops

₹ 75,397Multiple Airlines

Thu, 11 Jun - Thu, 18 Jun

13:15 - 11:00

LHR

IXZ

17h 15m

1 stop

08:45 - 17:45

IXZ

LHR

37h 30m

2 stops

₹ 102,080Multiple Airlines

Sat, 23 May - Sat, 30 May

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China Eastern flights from London to Southeast Asia

Our best China Eastern deals on London to Southeast Asia flight tickets

China Eastern

28 Oct

LHR21:00London Heathrow

24h 25m

1 stop

SIN05:25Singapore Changi

11 Nov

SIN23:00Singapore Changi

26h 30m

1 stop

LHR17:30London Heathrow

₹ 71,028

China Eastern

25 May

LHR21:20London Heathrow

25h 05m

1 stop

SIN05:25Singapore Changi

9 Jun

SIN00:55Singapore Changi

24h 45m

1 stop

LHR18:40London Heathrow

₹ 71,123

China Eastern

28 Oct

LHR21:00London Heathrow

24h 25m

1 stop

SIN05:25Singapore Changi

8 Nov

SIN10:10Singapore Changi

39h 20m

1 stop

LHR17:30London Heathrow

₹ 71,218

Etihad Airways flights from London to Southeast Asia

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

Etihad Airways

9 Jun

LHR14:45London Heathrow

35h 55m

1 stop

SIN09:40Singapore Changi

20 Jun

SIN21:00Singapore Changi

22h 45m

1 stop

LHR12:45London Heathrow

₹ 73,023

Etihad Airways

5 May

LHR14:45London Heathrow

35h 55m

1 stop

SIN09:40Singapore Changi

11 May

SIN21:00Singapore Changi

17h 00m

1 stop

LHR07:00London Heathrow

₹ 73,212

Etihad Airways

25 May

LHR14:45London Heathrow

35h 55m

1 stop

SIN09:40Singapore Changi

1 Jun

SIN21:00Singapore Changi

25h 05m

1 stop

LHR15:05London Heathrow

₹ 73,877

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 30/9

22:05-02:00

1 stop20h 55m

Singapore Changi

Thu 29/10

18:30-19:10

1 stop32h 40m

₹ 67,230

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 25/9

22:05-12:20

1 stop31h 15m

Singapore Changi

Thu 8/10

03:00-20:00

1 stop24h 00m

₹ 67,325

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 28/5

22:05-12:45

1 stop31h 40m

Singapore Changi

Thu 4/6

20:00-15:20

1 stop26h 20m

₹ 68,939

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 28/5

22:05-12:45

1 stop31h 40m

Singapore Changi

Thu 4/6

20:00-15:20

1 stop26h 20m

₹ 69,034

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 28/10

21:00-05:25

1 stop24h 25m

Singapore Changi

Wed 11/11

23:00-17:30

1 stop26h 30m

₹ 71,028

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 25/5

21:20-05:25

1 stop25h 05m

Singapore Changi

Tue 9/6

00:55-18:40

1 stop24h 45m

₹ 71,123

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 11/6

14:00-11:00

1 stop16h 30m

Port Blair

Thu 18/6

11:40-11:30

1 stop28h 20m

₹ 73,972

Fastest return journey

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 11/6

14:00-11:00

1 stop16h 30m

Port Blair

Thu 18/6

11:40-10:15

2 stops27h 05m

₹ 74,637

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 11/6

10:00-14:15

2 stops23h 45m

Port Blair

Thu 18/6

09:40-06:55

3 stops25h 45m

₹ 75,397

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sat 23/5

13:15-11:00

1 stop17h 15m

Port Blair

Sat 30/5

08:45-17:45

2 stops37h 30m

₹ 102,080

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 ₹ 76,916. 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 ₹ 77,960.

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 Thursday. Travellers who choose to depart for Southeast Asia on a Thursday will often find tickets for as low as ₹ 91,845. The most expensive day to fly to Southeast Asia is Friday, with ticket prices averaging around ₹ 134,140.

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 ₹ 118,262. 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 ₹ 131,598 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 ₹ 88,881 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 ₹ 83,563 on momondo.

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 05m
Direct flights	Every day
Airports in Southeast Asia	295 airports

The fastest flight from London to Southeast Asia takes 13h 05m

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).

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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 18.63% of the total bookings. Other popular models include Airbus A350-1000 with 14.74%, Boeing 777 with 11.85%, and Boeing 787-8 Dreamliner with 6.78%.

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.