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

Shenzhen Airlines, China Eastern, and Austrian 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?

35 flights are operational daily from London to Southeast Asia as of August 2026. The most popular departure time for this route is 22:00, with 59% 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 248 per week as of August 2026. 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.

₹ 42,692 Cheap Flights from London to Southeast Asia in 2026

Discover deals from 900+ travel sites with momondo.

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.

13:15 - 11:00-

17h 15m

11:40 - 11:30-

28h 20m

₹ 59,463Air India

Tue, 1 Sep - Sat, 12 Sep

09:45 - 11:00-

20h 45m

11:40 - 19:00-

35h 50m

₹ 59,654Air India

Wed, 16 Sep - Wed, 23 Sep

09:45 - 11:00-

20h 45m

11:40 - 10:15-

27h 05m

₹ 60,130Air India

Thu, 10 Sep - Thu, 17 Sep

13:15 - 11:00-

17h 15m

11:40 - 10:15-

27h 05m

₹ 60,226Air India

Tue, 1 Sep - Sat, 12 Sep

21:05 - 09:25-

30h 50m

14:10 - 11:30-

26h 50m

₹ 60,321Air India

Sat, 7 Nov - Sat, 21 Nov

13:15 - 11:00-

17h 15m

11:40 - 11:30-

28h 20m

₹ 60,416Air India

Wed, 16 Sep - Wed, 23 Sep

22:10 - 11:00-

32h 20m

11:40 - 11:30-

28h 20m

₹ 60,607Air India

Tue, 1 Sep - Sat, 12 Sep

12:30 - 11:00-

42h 00m

11:40 - 10:15-

27h 05m

₹ 60,893Air India

Tue, 1 Sep - Sat, 12 Sep

22:10 - 11:00-

32h 20m

11:40 - 10:15-

27h 05m

₹ 61,369Air India

Tue, 1 Sep - Sat, 12 Sep

13:15 - 11:00-

17h 15m

11:40 - 11:30-

28h 20m

₹ 63,275Air India

Tue, 1 Sep - Sat, 12 Sep

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Etihad Airways flights from London to Southeast Asia

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

Etihad Airways

3 Sept

LHR09:30London Heathrow

17h 10m

1 stop

SIN09:40Singapore Changi

4 Oct

SIN21:00Singapore Changi

25h 05m

1 stop

LHR15:05London Heathrow

₹ 78,236

Etihad Airways

1 Sept

LHR21:45London Heathrow

28h 55m

1 stop

SIN09:40Singapore Changi

17 Sept

SIN21:00Singapore Changi

17h 00m

1 stop

LHR07:00London Heathrow

₹ 78,332

Etihad Airways

1 Sept

LHR21:45London Heathrow

28h 55m

1 stop

SIN09:40Singapore Changi

16 Sept

SIN21:00Singapore Changi

17h 00m

1 stop

LHR07:00London Heathrow

₹ 78,427

Gulf Air flights from London to Southeast Asia

Our best Gulf Air deals on London to Southeast Asia flight tickets

Gulf Air

14 Jan

LHR09:30London Heathrow

19h 20m

1 stop

SIN12:50Singapore Changi

7 Feb

SIN20:00Singapore Changi

26h 45m

1 stop

LHR14:45London Heathrow

₹ 74,043

Gulf Air

10 Oct

LHR22:05London Heathrow

31h 40m

1 stop

SIN12:45Singapore Changi

24 Oct

SIN20:00Singapore Changi

18h 35m

1 stop

LHR07:35London Heathrow

₹ 74,329

Gulf Air

6 Nov

LHR21:40London Heathrow

31h 10m

1 stop

SIN12:50Singapore Changi

23 Jan

SIN20:00Singapore Changi

26h 45m

1 stop

LHR14:45London Heathrow

₹ 74,710

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 1/9

13:15-11:00

1 stop17h 15m

Port Blair

Sat 12/9

11:40-11:30

1 stop28h 20m

₹ 59,463

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Wed 16/9

09:45-11:00

1 stop20h 45m

Port Blair

Wed 23/9

11:40-19:00

1 stop35h 50m

₹ 59,654

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 10/9

09:45-11:00

1 stop20h 45m

Port Blair

Thu 17/9

11:40-10:15

2 stops27h 05m

₹ 60,130

Fastest return journey

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 1/9

13:15-11:00

1 stop17h 15m

Port Blair

Sat 12/9

11:40-10:15

2 stops27h 05m

₹ 60,226

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sat 7/11

21:05-09:25

2 stops30h 50m

Port Blair

Sat 21/11

14:10-11:30

1 stop26h 50m

₹ 60,321

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Wed 16/9

13:15-11:00

1 stop17h 15m

Port Blair

Wed 23/9

11:40-11:30

2 stops28h 20m

₹ 60,416

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 1/9

22:10-11:00

2 stops32h 20m

Port Blair

Sat 12/9

11:40-11:30

1 stop28h 20m

₹ 60,607

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 1/9

12:30-11:00

2 stops42h 00m

Port Blair

Sat 12/9

11:40-10:15

2 stops27h 05m

₹ 60,893

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 1/9

22:10-11:00

2 stops32h 20m

Port Blair

Sat 12/9

11:40-10:15

2 stops27h 05m

₹ 61,369

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 1/9

13:15-11:00

1 stop17h 15m

Port Blair

Sat 12/9

11:40-11:30

1 stop28h 20m

₹ 63,275

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 ₹ 77,950. 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 ₹ 81,476.

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 ₹ 102,017. The most expensive day to fly to Southeast Asia is Thursday, with ticket prices averaging around ₹ 147,180.

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 ₹ 118,681. 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 ₹ 147,180 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 Heathrow 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 ₹ 89,703 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 ₹ 84,812 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 20m
Direct flights	Every day
Airports in Southeast Asia	294 airports

The fastest flight from London to Southeast Asia takes 13h 20m

Direct flights go from London to Southeast Asia every day.

There are 294 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 19.38% of the total bookings. Other popular models include Airbus A350-1000 with 13.16%, Boeing 777 with 13.08%, and Airbus A321neo with 7.76%.

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 ₹ 65,301	Free Cancellation	Rating 7.3 1,498 reviews		Search Etihad Airways flights
EVA Air	PriceFrom ₹ 92,170	Free Cancellation	Rating 8.5 1,511 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.