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

China Eastern, Norse Atlantic UK, and British 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 9 per day as of August 2026. The most frequent departure time is 10:00p.m., with 59% of daily flights leaving in the evening.

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

As of August 2026, there are 69 flights per week flying from London to Southeast Asia. The most common day of the week flights depart is Tue, with 16% of 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 old do you have to be to fly from London to Southeast Asia?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Southeast Asia.

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

The necessary travel and health documents for your Southeast Asia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 516 Cheap Flights from London to Southeast Asia in 2026

Find the cheapest flights from London to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:00 p.m. - 6:15 p.m.

LHR

BKK

38h 15m

1 stop

3:15 a.m. - 7:50 p.m.

BKK

LHR

22h 35m

1 stop

C$ 883Shenzhen Airlines

Thu, 15 Oct - Sun, 18 Oct

9:00 p.m. - 10:25 p.m.

LHR

BKK

18h 25m

1 stop

3:10 a.m. - 5:30 p.m.

BKK

LHR

45h 20m

2 stops

C$ 885China Eastern

Wed, 11 Nov - Wed, 18 Nov

10:30 a.m. - 8:10 p.m.

LGW

BKK

26h 40m

2 stops

7:05 p.m. - 2:00 p.m.

BKK

LGW

25h 55m

1 stop

C$ 885China Eastern

Thu, 29 Oct - Sat, 7 Nov

3:35 p.m. - 12:35 p.m.

LGW

BKK

15h 00m

1 stop

10:35 p.m. - 9:00 a.m.

BKK

LGW

16h 25m

1 stop

C$ 887Condor

Sun, 11 Oct - Tue, 20 Oct

10:20 a.m. - 12:35 p.m.

LGW

BKK

20h 15m

1 stop

10:35 p.m. - 2:40 p.m.

BKK

LGW

22h 05m

1 stop

C$ 888Condor

Fri, 4 Sep - Tue, 22 Sep

9:00 p.m. - 10:35 p.m.

LHR

BKK

42h 35m

2 stops

5:05 a.m. - 5:30 p.m.

BKK

LHR

19h 25m

1 stop

C$ 888China Eastern

Tue, 3 Nov - Mon, 16 Nov

10:30 a.m. - 2:55 p.m.

LGW

BKK

45h 25m

3 stops

3:10 a.m. - 6:30 a.m.

BKK

LGW

34h 20m

2 stops

C$ 890China Eastern

Tue, 17 Nov - Thu, 19 Nov

9:00 p.m. - 10:25 p.m.

LHR

BKK

18h 25m

1 stop

7:50 a.m. - 5:30 p.m.

BKK

LHR

40h 40m

2 stops

C$ 891China Eastern

Tue, 3 Nov - Sat, 14 Nov

5:00 p.m. - 6:25 p.m.

LGW

BKK

18h 25m

1 stop

9:05 p.m. - 6:30 a.m.

BKK

LGW

40h 25m

3 stops

C$ 891China Eastern

Fri, 30 Oct - Wed, 11 Nov

9:20 p.m. - 1:10 a.m.

LHR

BKK

45h 50m

2 stops

3:00 a.m. - 6:40 p.m.

BKK

LHR

21h 40m

2 stops

C$ 892China Eastern

Wed, 23 Sep - Tue, 13 Oct

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Shenzhen Airlines flights from London to Southeast Asia

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

Shenzhen Airlines

15 Oct

LHR10:00 p.m.London Heathrow

38h 15m

1 stop

BKK6:15 p.m.Bangkok Suvarnabhumi

18 Oct

BKK3:15 a.m.Bangkok Suvarnabhumi

22h 35m

1 stop

LHR7:50 p.m.London Heathrow

C$ 883

Shenzhen Airlines

17 Oct

LHR10:05 p.m.London Heathrow

22h 10m

1 stop

BKK2:15 a.m.Bangkok Suvarnabhumi

24 Oct

BKK12:10 p.m.Bangkok Suvarnabhumi

38h 00m

1 stop

LHR8:10 p.m.London Heathrow

C$ 904

Shenzhen Airlines

14 Sep

LHR10:05 p.m.London Heathrow

38h 10m

1 stop

BKK6:15 p.m.Bangkok Suvarnabhumi

23 Sep

BKK3:15 a.m.Bangkok Suvarnabhumi

22h 35m

1 stop

LHR7:50 p.m.London Heathrow

C$ 918

Condor flights from London to Southeast Asia

Our best Condor deals on London to Southeast Asia flight tickets

Condor

11 Oct

LGW3:35 p.m.London Gatwick

15h 00m

1 stop

BKK12:35 p.m.Bangkok Suvarnabhumi

19 Oct

BKK10:35 p.m.Bangkok Suvarnabhumi

16h 25m

1 stop

LGW9:00 a.m.London Gatwick

C$ 887

Condor

4 Sep

LGW10:20 a.m.London Gatwick

20h 15m

1 stop

BKK12:35 p.m.Bangkok Suvarnabhumi

23 Sep

BKK10:35 p.m.Bangkok Suvarnabhumi

22h 10m

1 stop

LGW2:45 p.m.London Gatwick

C$ 888

Condor

11 Aug

LGW10:20 a.m.London Gatwick

20h 15m

1 stop

BKK12:35 p.m.Bangkok Suvarnabhumi

7 Oct

BKK10:35 p.m.Bangkok Suvarnabhumi

16h 20m

1 stop

LGW8:55 a.m.London Gatwick

C$ 891

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 15/10

10:00 p.m.-6:15 p.m.

1 stop38h 15m

Bangkok Suvarnabhumi

Sun 18/10

3:15 a.m.-7:50 p.m.

1 stop22h 35m

C$ 883

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 11/11

9:00 p.m.-10:25 p.m.

1 stop18h 25m

Bangkok Suvarnabhumi

Wed 18/11

3:10 a.m.-5:30 p.m.

2 stops45h 20m

C$ 885

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Thu 29/10

10:30 a.m.-8:10 p.m.

2 stops26h 40m

Bangkok Suvarnabhumi

Sat 7/11

7:05 p.m.-2:00 p.m.

1 stop25h 55m

C$ 885

Quickest round-trip

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sun 11/10

3:35 p.m.-12:35 p.m.

1 stop15h 00m

Bangkok Suvarnabhumi

Tue 20/10

10:35 p.m.-9:00 a.m.

1 stop16h 25m

C$ 887

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 4/9

10:20 a.m.-12:35 p.m.

1 stop20h 15m

Bangkok Suvarnabhumi

Tue 22/9

10:35 p.m.-2:40 p.m.

1 stop22h 05m

C$ 888

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 3/11

9:00 p.m.-10:35 p.m.

2 stops42h 35m

Bangkok Suvarnabhumi

Mon 16/11

5:05 a.m.-5:30 p.m.

1 stop19h 25m

C$ 888

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 17/11

10:30 a.m.-2:55 p.m.

3 stops45h 25m

Bangkok Suvarnabhumi

Thu 19/11

3:10 a.m.-6:30 a.m.

2 stops34h 20m

C$ 890

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 3/11

9:00 p.m.-10:25 p.m.

1 stop18h 25m

Bangkok Suvarnabhumi

Sat 14/11

7:50 a.m.-5:30 p.m.

2 stops40h 40m

C$ 891

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 30/10

5:00 p.m.-6:25 p.m.

1 stop18h 25m

Bangkok Suvarnabhumi

Wed 11/11

9:05 p.m.-6:30 a.m.

3 stops40h 25m

C$ 891

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 23/9

9:20 p.m.-1:10 a.m.

2 stops45h 50m

Bangkok Suvarnabhumi

Tue 13/10

3:00 a.m.-6:40 p.m.

2 stops21h 40m

C$ 892

Flights are sorted by cheapest round-trip 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 November. Flight prices, which tend to average around C$ 1,150, are often lower during this time because this is during the off-season. If you don’t want to visit Southeast Asia in November, then you should wait until September to fly from London, when ticket prices are also cheap, with an average price of C$ 1,199.

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 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 C$ 1,386 when searching weeks out. 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 C$ 1,300 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	11h 40m
Direct flights	Mon, Tue, Wed, Thu and Sat
Airports in Southeast Asia	294 airports

The fastest flight from London to Southeast Asia takes 11h 40m

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

There are 294 airports in Southeast Asia. From London there are direct flights to Bangkok Suvarnabhumi (BKK).

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 are refreshed on a daily basis.
How old do you have to be to fly from London to Southeast Asia?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The necessary travel and health documents for your Southeast Asia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 (19.38% of total bookings). The next most popular plane models are Airbus A350-1000 (13.16%), Boeing 777 (13.08%), and Airbus A321neo (7.76%).

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?

Yes. momondo enables you to select and highlight flights to Southeast Asia from London with this policy.

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

Once all potential London to Southeast Asia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Southeast Asia, momondo offers a useful price alert feature which will track prices for flights to Southeast Asia from London and alert you when they change.