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

SAUDIA, Shenzhen Airlines, and Etihad Airways are the most popular carriers operating from London to Southeast Asia

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

The number of flights available between London and Southeast Asia is 18 per day as of December 2025. The most frequent departure time is 21:00, with 64% of daily flights leaving in the evening.

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

As of December 2025, 129 flights take off from London and land in Southeast Asia each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

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

Prices for flights from London to Southeast Asia are refreshed on a daily basis.

How many operators does momondo search for flights from London to Southeast Asia?

The number of operators available for flights from London to Southeast Asia is 2 as of December 2025.

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 stopovers. 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 travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$590 Cheap Flights from London to Southeast Asia in 2025/26

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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.

22:40 - 18:10

LHR

BKK

37h 30m1 stop

01:30 - 20:25

BKK

LHR

24h 55m1 stop

$897Air China

Mon, 1 Jun - Sun, 14 Jun

21:35 - 16:40

LHR

BKK

36h 05m1 stop

13:50 - 19:40

BKK

LHR

36h 50m1 stop

$913Air China

Thu, 19 Feb - Wed, 4 Mar

10:30 - 17:50

LGW

BKK

24h 20m1 stop

05:45 - 14:00

BKK

LGW

39h 15m1 stop

$916China Eastern

Thu, 19 Feb - Fri, 6 Mar

16:00 - 10:25

LGW

BKK

11h 25mdirect

12:25 - 18:20

BKK

LGW

12h 55mdirect

$918Norse Atlantic UK

Wed, 11 Mar - Thu, 26 Mar

10:30 - 20:10

LGW

BKK

26h 40m3 stops

00:55 - 14:00

BKK

LGW

20h 05m1 stop

$930China Eastern

Thu, 19 Feb - Wed, 4 Mar

16:00 - 10:25

LGW

BKK

11h 25mdirect

12:30 - 18:30

BKK

LGW

13h 00mdirect

$948Norse Atlantic UK

Tue, 27 Jan - Wed, 4 Feb

08:45 - 07:50

LHR

BKK

16h 05m1 stop

20:50 - 11:05

BKK

LHR

21h 15m1 stop

$951Air India

Thu, 19 Feb - Mon, 2 Mar

21:10 - 11:10

LHR

BKK

31h 00m1 stop

19:30 - 19:10

BKK

LHR

30h 40m1 stop

$971Shenzhen Airlines

Fri, 6 Feb - Thu, 26 Feb

21:10 - 18:30

LHR

BKK

38h 20m1 stop

12:10 - 19:10

BKK

LHR

38h 00m1 stop

$972Shenzhen Airlines

Sat, 3 Jan - Fri, 23 Jan

20:30 - 19:35

LHR

BKK

16h 05m1 stop

20:50 - 11:05

BKK

LHR

21h 15m1 stop

$993Air India

Thu, 19 Feb - Thu, 5 Mar

SAUDIA flights from London to Southeast Asia

Our best SAUDIA deals on London to Southeast Asia flight tickets

SAUDIA

5 Mar

LGW14:00London Gatwick

16h 40m

1 stop

BKK13:40Bangkok Suvarnabhumi

23 Mar

BKK01:15Bangkok Suvarnabhumi

17h 45m

1 stop

LGW12:00London Gatwick

$1,094

Find similar

SAUDIA

3 Mar

LGW14:00London Gatwick

16h 40m

1 stop

BKK13:40Bangkok Suvarnabhumi

23 Mar

BKK01:15Bangkok Suvarnabhumi

17h 45m

1 stop

LGW12:00London Gatwick

$1,095

Find similar

SAUDIA

5 Feb

LHR22:05London Heathrow

18h 25m

1 stop

BKK23:30Bangkok Suvarnabhumi

19 Feb

BKK15:20Bangkok Suvarnabhumi

23h 10m

1 stop

LHR07:30London Heathrow

$1,124

Find similar

Norse Atlantic UK flights from London to Southeast Asia

Our best Norse Atlantic UK deals on London to Southeast Asia flight tickets

Norse Atlantic UK

11 Mar

LGW16:00London Gatwick

11h 25m

BKK10:25Bangkok Suvarnabhumi

26 Mar

BKK12:25Bangkok Suvarnabhumi

12h 55m

LGW18:20London Gatwick

$918

Find similar

Norse Atlantic UK

27 Jan

LGW16:00London Gatwick

11h 25m

BKK10:25Bangkok Suvarnabhumi

4 Feb

BKK12:30Bangkok Suvarnabhumi

13h 00m

LGW18:30London Gatwick

$948

Find similar

Norse Atlantic UK

21 Jan

LGW16:00London Gatwick

11h 25m

BKK10:25Bangkok Suvarnabhumi

4 Feb

BKK12:30Bangkok Suvarnabhumi

13h 00m

LGW18:30London Gatwick

$980

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 1/6

22:40-18:10

1 stop37h 30m

Bangkok Suvarnabhumi

Sun 14/6

01:30-20:25

1 stop24h 55m

$897

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 19/2

21:35-16:40

1 stop36h 05m

Bangkok Suvarnabhumi

Wed 4/3

13:50-19:40

1 stop36h 50m

$913

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Thu 19/2

10:30-17:50

1 stop24h 20m

Bangkok Suvarnabhumi

Fri 6/3

05:45-14:00

1 stop39h 15m

$916

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Wed 11/3

16:00-10:25

Nonstop11h 25m

Bangkok Suvarnabhumi

Thu 26/3

12:25-18:20

Nonstop12h 55m

$918

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Thu 19/2

10:30-20:10

3 stops26h 40m

Bangkok Suvarnabhumi

Wed 4/3

00:55-14:00

1 stop20h 05m

$930

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 27/1

16:00-10:25

Nonstop11h 25m

Bangkok Suvarnabhumi

Wed 4/2

12:30-18:30

Nonstop13h 00m

$948

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 19/2

08:45-07:50

1 stop16h 05m

Bangkok Suvarnabhumi

Mon 2/3

20:50-11:05

1 stop21h 15m

$951

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 6/2

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

Thu 26/2

19:30-19:10

1 stop30h 40m

$971

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 3/1

21:10-18:30

1 stop38h 20m

Bangkok Suvarnabhumi

Fri 23/1

12:10-19:10

1 stop38h 00m

$972

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 19/2

20:30-19:35

1 stop16h 05m

Bangkok Suvarnabhumi

Thu 5/3

20:50-11:05

1 stop21h 15m

$993

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?

The cheapest month to fly to Southeast Asia from London is in March. Flight prices, which tend to average around $835, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Southeast Asia, with average flight prices from London averaging around $1,339.

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

Our data shows that Tuesday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as $1,404. On the other hand, Thursday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around $2,105.

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

In the morning is the cheapest time of day to fly from London to Southeast Asia when you can find flight prices for as low as $1,461. Flying to Southeast Asia in the morning is an ideal time because this is during off-peak travel hours. Flights in the evening are often more expensive, with an average ticket price of $1,655.

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 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 $1,618 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 $1,480 on momondo.

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

There are 4 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	11h 25m
Direct flights	Mon, Tue, Wed, Thu, Sat and Sun
Airports in Southeast Asia	295 airports

The fastest flight from London to Southeast Asia takes 11h 25m

Direct flights go from London to Southeast Asia on Monday, Tuesday, Wednesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights..

There are 295 airports in Southeast Asia. From London there are direct flights to Bangkok Suvarnabhumi (BKK).

Search flight deals

When did momondo last update prices for flights from London to Southeast Asia?
Prices for flights from London to Southeast Asia are refreshed on a daily basis.
How many operators does momondo search for flights from London to Southeast Asia?
The number of operators available for flights from London to Southeast Asia is 2 as of December 2025.
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 stopovers. 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 travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Southeast Asia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to Southeast Asia is Boeing 787-9 Dreamliner (18.41% of total bookings). The next most popular plane models are Airbus A350-1000 (16.61%), Boeing 777 (10.75%), and Boeing 777-300ER (8.47%).

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 $1,058	Free cancellation	Rating 7.4 1,332 reviews		Search Etihad Airways flights
Thai Airways	PriceFrom $1,160	Free cancellation	Rating 7.8 366 reviews		Search Thai Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Southeast Asia for you.

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

momondo does allow users to show only those flights to Southeast Asia from London which offer a flexible booking policy as well as other useful filters and features.

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?

Of course. momondo tracks the price of London to Southeast Asia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Southeast Asia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Find better results for your trip to Southeast Asia

Popular Cities in Southeast Asia

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Cheap flights from London to Southeast Asia from $593

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Southeast Asia departing on 15/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from London to Southeast Asia

Cheap return flights

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SAUDIA flights from London to Southeast Asia

Our best SAUDIA deals on London to Southeast Asia flight tickets

Norse Atlantic UK flights from London to Southeast Asia

Our best Norse Atlantic UK deals on London to Southeast Asia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

See travel insights to Southeast Asia from

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

What is the cheapest month to fly to Southeast Asia?

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

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

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 to Southeast Asia?

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

There are 4 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.

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

SAUDIA, Shenzhen Airlines, and Etihad Airways are the most popular carriers operating from London to Southeast Asia

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

The number of flights available between London and Southeast Asia is 18 per day as of December 2025. The most frequent departure time is 21:00, with 64% of daily flights leaving in the evening.

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

As of December 2025, 129 flights take off from London and land in Southeast Asia each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

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

Direct flights

Airports in Southeast Asia

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

How many operators does momondo search for flights from London to Southeast Asia?

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

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

What is the most popular plane model from London to Southeast Asia?

Best airlines flying from London to Southeast Asia

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

Why use momondo?

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

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

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

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

An easier way to manage your Southeast Asia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Southeast Asia

Popular Cities in Southeast Asia

Popular flights according to clicks in the last 7 days on momondo