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

China Eastern, Etihad Airways, and SWISS are the most popular carriers operating from London to Southeast Asia

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

As of June 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.

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 June 2026. The most frequent departure time is 10:00p.m., with 63% of daily flights leaving in the evening.

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$ 548 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.

9:10 p.m. - 11:10 a.m.

LHR

BKK

31h 00m

1 stop

12:10 p.m. - 7:10 p.m.

BKK

LHR

38h 00m

1 stop

C$ 877Shenzhen Airlines

Wed, 25 Nov - Sun, 29 Nov

5:00 p.m. - 12:55 a.m.

LGW

BKK

24h 55m

1 stop

1:35 p.m. - 6:30 a.m.

BKK

LGW

23h 55m

1 stop

C$ 878China Eastern

Fri, 27 Nov - Wed, 3 Mar

10:05 p.m. - 2:15 a.m.

LHR

BKK

22h 10m

1 stop

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

BKK

LHR

30h 35m

1 stop

C$ 878Shenzhen Airlines

Sat, 5 Sep - Fri, 25 Sep

11:20 a.m. - 5:45 a.m.

LGW

BKK

11h 25mdirect

7:45 a.m. - 1:45 p.m.

BKK

LGW

13h 00mdirect

C$ 888Norse Atlantic UK

Mon, 26 Oct - Tue, 10 Nov

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

LGW

BKK

15h 00m

1 stop

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

BKK

LGW

22h 05m

1 stop

C$ 894Condor

Mon, 7 Sep - Tue, 29 Sep

11:20 a.m. - 5:45 a.m.

LGW

BKK

11h 25mdirect

12:45 p.m. - 6:45 p.m.

BKK

LGW

13h 00mdirect

C$ 895Norse Atlantic UK

Mon, 26 Oct - Mon, 2 Nov

2:45 p.m. - 12:30 p.m.

LHR

HKT

15h 45m

1 stop

3:20 a.m. - 7:00 a.m.

HKT

LHR

33h 40m

1 stop

C$ 1,142Etihad Airways

Fri, 2 Oct - Wed, 14 Oct

2:45 p.m. - 11:50 p.m.

LHR

HKT

27h 05m

1 stop

3:20 p.m. - 12:45 p.m.

HKT

LHR

27h 25m

1 stop

C$ 1,143Etihad Airways

Wed, 1 Jul - Sat, 11 Jul

10:05 p.m. - 11:30 a.m.

LHR

MNL

30h 25m

1 stop

12:45 p.m. - 6:55 a.m.

MNL

LHR

25h 10m

1 stop

C$ 1,201Gulf Air

Tue, 15 Sep - Wed, 30 Sep

10:05 p.m. - 11:30 a.m.

LHR

MNL

30h 25m

1 stop

12:45 p.m. - 3:20 p.m.

MNL

LHR

33h 35m

1 stop

C$ 1,225Gulf Air

Sat, 19 Sep - Thu, 8 Oct

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

China Eastern flights from London to Southeast Asia

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

China Eastern

27 Nov

LGW5:00 p.m.London Gatwick

24h 55m

1 stop

BKK12:55 a.m.Bangkok Suvarnabhumi

27 Feb

BKK1:55 a.m.Bangkok Suvarnabhumi

19h 05m

1 stop

LGW2:00 p.m.London Gatwick

C$ 878

China Eastern

27 Oct

LGW10:30 a.m.London Gatwick

18h 50m

1 stop

BKK12:20 p.m.Bangkok Suvarnabhumi

22 Nov

BKK1:55 a.m.Bangkok Suvarnabhumi

35h 35m

1 stop

LGW6:30 a.m.London Gatwick

C$ 881

China Eastern

31 Oct

LGW5:00 p.m.London Gatwick

24h 55m

1 stop

BKK12:55 a.m.Bangkok Suvarnabhumi

2 Mar

BKK1:35 p.m.Bangkok Suvarnabhumi

31h 25m

1 stop

LGW2:00 p.m.London Gatwick

C$ 882

Shenzhen Airlines flights from London to Southeast Asia

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

Shenzhen Airlines

25 Nov

LHR9:10 p.m.London Heathrow

31h 00m

1 stop

BKK11:10 a.m.Bangkok Suvarnabhumi

29 Nov

BKK12:10 p.m.Bangkok Suvarnabhumi

38h 00m

1 stop

LHR7:10 p.m.London Heathrow

C$ 877

Shenzhen Airlines

5 Sep

LHR10:05 p.m.London Heathrow

22h 10m

1 stop

BKK2:15 a.m.Bangkok Suvarnabhumi

25 Sep

BKK7:15 p.m.Bangkok Suvarnabhumi

30h 35m

1 stop

LHR7:50 p.m.London Heathrow

C$ 878

Shenzhen Airlines

4 Nov

LHR9:10 p.m.London Heathrow

22h 05m

1 stop

BKK2:15 a.m.Bangkok Suvarnabhumi

26 Nov

BKK3:15 a.m.Bangkok Suvarnabhumi

22h 55m

1 stop

LHR7:10 p.m.London Heathrow

C$ 880

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 25/11

9:10 p.m.-11:10 a.m.

1 stop31h 00m

Bangkok Suvarnabhumi

Sun 29/11

12:10 p.m.-7:10 p.m.

1 stop38h 00m

C$ 877

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 27/11

5:00 p.m.-12:55 a.m.

1 stop24h 55m

Bangkok Suvarnabhumi

Wed 3/3

1:35 p.m.-6:30 a.m.

1 stop23h 55m

C$ 878

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 5/9

10:05 p.m.-2:15 a.m.

1 stop22h 10m

Bangkok Suvarnabhumi

Fri 25/9

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

1 stop30h 35m

C$ 878

Quickest round-trip

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 26/10

11:20 a.m.-5:45 a.m.

Nonstop11h 25m

Bangkok Suvarnabhumi

Tue 10/11

7:45 a.m.-1:45 p.m.

Nonstop13h 00m

C$ 888

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 7/9

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

1 stop15h 00m

Bangkok Suvarnabhumi

Tue 29/9

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

1 stop22h 05m

C$ 894

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 26/10

11:20 a.m.-5:45 a.m.

Nonstop11h 25m

Bangkok Suvarnabhumi

Mon 2/11

12:45 p.m.-6:45 p.m.

Nonstop13h 00m

C$ 895

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Fri 2/10

2:45 p.m.-12:30 p.m.

1 stop15h 45m

Phuket City

Wed 14/10

3:20 a.m.-7:00 a.m.

1 stop33h 40m

C$ 1,142

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Wed 1/7

2:45 p.m.-11:50 p.m.

1 stop27h 05m

Phuket City

Sat 11/7

3:20 p.m.-12:45 p.m.

1 stop27h 25m

C$ 1,143

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 15/9

10:05 p.m.-11:30 a.m.

1 stop30h 25m

Manila Ninoy Aquino Intl

Wed 30/9

12:45 p.m.-6:55 a.m.

1 stop25h 10m

C$ 1,201

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Sat 19/9

10:05 p.m.-11:30 a.m.

1 stop30h 25m

Manila Ninoy Aquino Intl

Thu 8/10

12:45 p.m.-3:20 p.m.

1 stop33h 35m

C$ 1,225

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$ 1,149, 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 Heathrow to Ho Chi Minh City 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$ 1,385 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$ 1,279 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 30m
Direct flights	Every day
Airports in Southeast Asia	295 airports

The fastest flight from London to Southeast Asia takes 11h 30m

Direct flights go from London to Southeast Asia every day.

There are 295 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 (16.86% of total bookings). The next most popular plane models are Airbus A350-1000 (14.64%), Boeing 777 (12.52%), and Airbus A321neo (8.65%).

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.