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

Shenzhen Airlines, Hainan Airlines, and Singapore Airlines are the most popular carriers operating from London to Southeast Asia

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

33 flights are operational daily from London to Southeast Asia as of October 2025. The most popular departure time for this route is 21:00, with 63% of flights per day taking off in the evening.

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

The number of flights available between London and Southeast Asia is 232 per week as of October 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

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.

₹ 36,658 Cheap Flights from London to Southeast Asia in 2025/26

1 adult

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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.

22:00 - 07:50LHR-IXZ

28h 20m1 stop

09:40 - 19:30IXZ-LHR

15h 20m1 stop

₹ 53,313Air India

Find Deal

Sun, 16 Nov - Thu, 27 Nov

17:10 - 18:00LHR-SIN

16h 50m1 stop

23:25 - 08:15SIN-LHR

15h 50m1 stop

₹ 53,489Multiple Airlines

Find Deal

Wed, 3 Dec - Fri, 1 May

13:50 - 17:25LHR-SIN

19h 35m1 stop

23:55 - 09:45SIN-LHR

17h 50m1 stop

₹ 53,577Lufthansa

Find Deal

Thu, 19 Mar - Mon, 23 Mar

20:55 - 09:35LHR-SIN

28h 40m1 stop

19:25 - 12:05SIN-LHR

24h 40m1 stop

₹ 53,665Etihad Airways

Find Deal

Thu, 13 Nov - Sat, 22 Nov

13:55 - 09:35LHR-SIN

35h 40m1 stop

19:25 - 14:30SIN-LHR

27h 05m1 stop

₹ 53,753Etihad Airways

Find Deal

Sat, 22 Nov - Tue, 20 Jan

17:50 - 17:25LHR-SIN

15h 35m1 stop

23:25 - 09:55SIN-LHR

17h 30m1 stop

₹ 54,370Lufthansa

Find Deal

Thu, 4 Dec - Fri, 1 May

09:30 - 12:30LHR-SIN

19h 00m1 stop

20:00 - 15:20SIN-LHR

26h 20m1 stop

₹ 59,569Gulf Air

Find Deal

Mon, 1 Dec - Thu, 30 Apr

09:30 - 12:30LHR-SIN

19h 00m1 stop

20:00 - 15:20SIN-LHR

26h 20m1 stop

₹ 59,657Gulf Air

Find Deal

Mon, 1 Dec - Wed, 29 Apr

10:20 - 18:40LHR-SIN

24h 20m1 stop

22:05 - 17:00SIN-LHR

26h 55m1 stop

₹ 59,922Finnair

Find Deal

Thu, 20 Nov - Wed, 3 Dec

07:30 - 18:40LHR-SIN

27h 10m1 stop

22:05 - 17:00SIN-LHR

26h 55m1 stop

₹ 60,010Finnair

Find Deal

Thu, 20 Nov - Sat, 17 Jan

Lufthansa flights from London to Southeast Asia

Our best Lufthansa deals on London to Southeast Asia flight tickets

Lufthansa

19 Mar

LHR13:50London Heathrow

19h 35m

1 stop

SIN17:25Singapore Changi

23 Mar

SIN23:55Singapore Changi

17h 50m

1 stop

LHR09:45London Heathrow

₹ 53,577

Find similar

Lufthansa

4 Dec

LHR17:50London Heathrow

15h 35m

1 stop

SIN17:25Singapore Changi

1 May

SIN23:25Singapore Changi

17h 30m

1 stop

LHR09:55London Heathrow

₹ 54,370

Find similar

Lufthansa

5 Dec

LHR17:50London Heathrow

15h 35m

1 stop

SIN17:25Singapore Changi

2 May

SIN23:25Singapore Changi

15h 50m

1 stop

LHR08:15London Heathrow

₹ 54,634

Find similar

Etihad Airways flights from London to Southeast Asia

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

Etihad Airways

13 Nov

LHR20:55London Heathrow

28h 40m

1 stop

SIN09:35Singapore Changi

22 Nov

SIN19:25Singapore Changi

24h 40m

1 stop

LHR12:05London Heathrow

₹ 53,665

Find similar

Etihad Airways

22 Nov

LHR13:55London Heathrow

35h 40m

1 stop

SIN09:35Singapore Changi

20 Jan

SIN19:25Singapore Changi

27h 05m

1 stop

LHR14:30London Heathrow

₹ 53,753

Find similar

Etihad Airways

6 Nov

LHR20:55London Heathrow

28h 40m

1 stop

SIN09:35Singapore Changi

30 Nov

SIN19:25Singapore Changi

30h 45m

1 stop

LHR18:10London Heathrow

₹ 55,251

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 16/11

22:00-07:50

1 stop28h 20m

Port Blair

Thu 27/11

09:40-19:30

1 stop15h 20m

₹ 53,313

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 3/12

17:10-18:00

1 stop16h 50m

Singapore Changi

Fri 1/5

23:25-08:15

1 stop15h 50m

₹ 53,489

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 19/3

13:50-17:25

1 stop19h 35m

Singapore Changi

Mon 23/3

23:55-09:45

1 stop17h 50m

₹ 53,577

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 13/11

20:55-09:35

1 stop28h 40m

Singapore Changi

Sat 22/11

19:25-12:05

1 stop24h 40m

₹ 53,665

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 22/11

13:55-09:35

1 stop35h 40m

Singapore Changi

Tue 20/1

19:25-14:30

1 stop27h 05m

₹ 53,753

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 4/12

17:50-17:25

1 stop15h 35m

Singapore Changi

Fri 1/5

23:25-09:55

1 stop17h 30m

₹ 54,370

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 1/12

09:30-12:30

1 stop19h 00m

Singapore Changi

Thu 30/4

20:00-15:20

1 stop26h 20m

₹ 59,569

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 1/12

09:30-12:30

1 stop19h 00m

Singapore Changi

Wed 29/4

20:00-15:20

1 stop26h 20m

₹ 59,657

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 20/11

10:20-18:40

1 stop24h 20m

Singapore Changi

Wed 3/12

22:05-17:00

1 stop26h 55m

₹ 59,922

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 20/11

07:30-18:40

1 stop27h 10m

Singapore Changi

Sat 17/1

22:05-17:00

1 stop26h 55m

₹ 60,010

Flights are sorted by cheapest return flights first.

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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, May 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 ₹ 47,497. If you aren’t able to travel during the month of May, then book flights to Southeast Asia from London during September instead. Flights to Southeast Asia in September, while not as cheap as those in May, still average around ₹ 64,239.

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 ₹ 85,231. The most expensive day to fly to Southeast Asia is Wednesday, with ticket prices averaging around ₹ 124,273.

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 afternoon. momondo users have found flights departing from London to Southeast Asia in the afternoon for as low as ₹ 70,098. 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 evening when prices are ₹ 114,183 on average. Flights to Southeast Asia from London in the evening 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 Singapore Changi for the best London - Southeast Asia flight prices

How far in advance should I book a flight 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 ₹ 83,200 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 ₹ 76,752 on momondo.

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

There are 3 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 00m
Direct flights	Every day
Airports in Southeast Asia	1 airport

The fastest flight from London to Southeast Asia takes 13h 00m

Direct flights go from London to Southeast Asia every day.

There is 1 airport near Southeast Asia: Singapore Changi (SIN)

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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 16.67% of the total bookings. Other popular models include Airbus A350-1000 with 16.41%, Boeing 777 with 12.99%, and Boeing 777-300ER with 7.90%.

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
Thai Airways	PriceFrom ₹ 76,478	Free Cancellation	Rating 7.8 361 reviews		Search Thai Airways flights
EVA Air	PriceFrom ₹ 85,231	Free Cancellation	Rating 8.4 1,264 reviews		Search EVA Air 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.