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Cheap flights from London to Southeast Asia from C$ 485

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 14/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London to Southeast Asia

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Eastern Logo
11:35 a.m. - 4:05 a.m.
LGW
-
BKK
34h 30m
1 stop
China Eastern Logo
7:50 a.m. - 4:00 p.m.
BKK
-
LGW
38h 10m
3 stops
C$ 744China Eastern
Sat, 2 May - Sat, 16 May
China Eastern Logo
7:00 p.m. - 6:05 p.m.
LGW
-
BKK
17h 05m
1 stop
China Eastern Logo
7:50 a.m. - 6:40 a.m.
BKK
-
LGW
28h 50m
3 stops
C$ 745China Eastern
Sun, 3 May - Mon, 18 May
China Eastern Logo
11:35 a.m. - 2:55 p.m.
LGW
-
BKK
21h 20m
2 stops
China Eastern Logo
3:55 p.m. - 3:00 p.m.
BKK
-
LGW
29h 05m
2 stops
C$ 751China Eastern
Sat, 2 May - Tue, 12 May
China Eastern Logo
11:35 a.m. - 10:15 p.m.
LGW
-
BKK
28h 40m
3 stops
China Eastern Logo
8:50 p.m. - 6:40 a.m.
BKK
-
LGW
39h 50m
3 stops
C$ 753China Eastern
Thu, 16 Apr - Sun, 3 May
China Eastern Logo
6:00 p.m. - 10:15 p.m.
LGW
-
BKK
22h 15m
2 stops
China Eastern Logo
1:20 p.m. - 6:40 a.m.
BKK
-
LGW
23h 20m
3 stops
C$ 755China Eastern
Tue, 12 May - Thu, 28 May
Shenzhen Airlines Logo
9:10 p.m. - 1:40 a.m.
LHR
-
MNL
20h 30m
1 stop
Shenzhen Airlines Logo
2:55 a.m. - 7:00 p.m.
MNL
-
LHR
24h 05m
1 stop
C$ 904Shenzhen Airlines
Fri, 6 Mar - Sat, 28 Mar
Shenzhen Airlines Logo
9:10 p.m. - 1:40 a.m.
LHR
-
MNL
20h 30m
1 stop
Shenzhen Airlines Logo
2:55 a.m. - 7:10 p.m.
MNL
-
LHR
24h 15m
1 stop
C$ 908Shenzhen Airlines
Fri, 6 Mar - Thu, 19 Mar
Shenzhen Airlines Logo
9:10 p.m. - 1:40 a.m.
LHR
-
MNL
20h 30m
1 stop
Shenzhen Airlines Logo
2:55 a.m. - 7:00 p.m.
MNL
-
LHR
24h 05m
1 stop
C$ 911Shenzhen Airlines
Sun, 8 Mar - Sat, 28 Mar
Air India Logo
9:45 a.m. - 9:50 p.m.
LHR
-
MNL
29h 05m
1 stop
Air India Logo
10:55 p.m. - 8:00 p.m.
MNL
-
LHR
28h 05m
1 stop
C$ 988Air India
Thu, 9 Apr - Mon, 4 May
Air India Logo
2:00 p.m. - 9:50 p.m.
LHR
-
MNL
24h 50m
1 stop
Air India Logo
10:55 p.m. - 7:00 p.m.
MNL
-
LHR
27h 05m
1 stop
C$ 991Air India
Thu, 9 Apr - Wed, 6 May

Shenzhen Airlines flights from London to Southeast Asia

Our best Shenzhen Airlines deals on London to Southeast Asia flight tickets
Shenzhen Airlines
11 Mar
LHR9:10 p.m.London Heathrow
31h 00m
1 stop
BKK11:10 a.m.Bangkok Suvarnabhumi
7 May
BKK7:30 p.m.Bangkok Suvarnabhumi
30h 30m
1 stop
LHR8:00 p.m.London Heathrow
C$ 825
Shenzhen Airlines
18 Feb
LHR9:10 p.m.London Heathrow
22h 05m
1 stop
BKK2:15 a.m.Bangkok Suvarnabhumi
3 Mar
BKK7:30 p.m.Bangkok Suvarnabhumi
30h 40m
1 stop
LHR7:10 p.m.London Heathrow
C$ 829
Shenzhen Airlines
4 Mar
LHR9:10 p.m.London Heathrow
22h 05m
1 stop
BKK2:15 a.m.Bangkok Suvarnabhumi
17 Mar
BKK7:30 p.m.Bangkok Suvarnabhumi
30h 40m
1 stop
LHR7:10 p.m.London Heathrow
C$ 836

China Eastern flights from London to Southeast Asia

Our best China Eastern deals on London to Southeast Asia flight tickets
China Eastern
2 May
LGW11:35 a.m.London Gatwick
21h 20m
2 stops
BKK2:55 p.m.Bangkok Suvarnabhumi
17 May
BKK2:10 a.m.Bangkok Suvarnabhumi
19h 00m
1 stop
LGW3:10 p.m.London Gatwick
C$ 744
China Eastern
2 May
LGW11:35 a.m.London Gatwick
21h 20m
2 stops
BKK2:55 p.m.Bangkok Suvarnabhumi
10 May
BKK9:55 p.m.Bangkok Suvarnabhumi
38h 45m
1 stop
LGW6:40 a.m.London Gatwick
C$ 745
China Eastern
5 Mar
LGW10:30 a.m.London Gatwick
57h 35m
2 stops
BKK3:05 a.m.Bangkok Suvarnabhumi
8 Mar
BKK7:50 a.m.Bangkok Suvarnabhumi
37h 10m
2 stops
LGW2:00 p.m.London Gatwick
C$ 747

momondo Fare Finder

 
Customize your flight search to find flights from London to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 29 January 2026.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sat 2/5

11:35 a.m.-4:05 a.m.

1 stop34h 30m

Bangkok Suvarnabhumi

Sat 16/5

7:50 a.m.-4:00 p.m.

3 stops38h 10m

C$ 744

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sun 3/5

7:00 p.m.-6:05 p.m.

1 stop17h 05m

Bangkok Suvarnabhumi

Mon 18/5

7:50 a.m.-6:40 a.m.

3 stops28h 50m

C$ 745

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sat 2/5

11:35 a.m.-2:55 p.m.

2 stops21h 20m

Bangkok Suvarnabhumi

Tue 12/5

3:55 p.m.-3:00 p.m.

2 stops29h 05m

C$ 751

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Thu 16/4

11:35 a.m.-10:15 p.m.

3 stops28h 40m

Bangkok Suvarnabhumi

Sun 3/5

8:50 p.m.-6:40 a.m.

3 stops39h 50m

C$ 753

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 12/5

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

2 stops22h 15m

Bangkok Suvarnabhumi

Thu 28/5

1:20 p.m.-6:40 a.m.

3 stops23h 20m

C$ 755

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Fri 6/3

9:10 p.m.-1:40 a.m.

1 stop20h 30m

Manila Ninoy Aquino Intl

Sat 28/3

2:55 a.m.-7:00 p.m.

1 stop24h 05m

C$ 904

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Fri 6/3

9:10 p.m.-1:40 a.m.

1 stop20h 30m

Manila Ninoy Aquino Intl

Thu 19/3

2:55 a.m.-7:10 p.m.

1 stop24h 15m

C$ 908

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Sun 8/3

9:10 p.m.-1:40 a.m.

1 stop20h 30m

Manila Ninoy Aquino Intl

Sat 28/3

2:55 a.m.-7:00 p.m.

1 stop24h 05m

C$ 911

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Thu 9/4

9:45 a.m.-9:50 p.m.

1 stop29h 05m

Manila Ninoy Aquino Intl

Mon 4/5

10:55 p.m.-8:00 p.m.

1 stop28h 05m

C$ 988

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Thu 9/4

2:00 p.m.-9:50 p.m.

1 stop24h 50m

Manila Ninoy Aquino Intl

Wed 6/5

10:55 p.m.-7:00 p.m.

1 stop27h 05m

C$ 991

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Southeast Asia from

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

What is the cheapest month to fly to Southeast Asia?

The cheapest month to fly to Southeast Asia from London is in May. Flight prices, which tend to average around C$ 992, are often lower during this time because this is during the off-season. If you don’t want to visit Southeast Asia in May, then you should wait until November to fly from London, when ticket prices are also cheap, with an average price of C$ 1,039.

What is the cheapest London to Southeast Asia flight route?

Fly from London Heathrow 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 C$ 1,284 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$ 1,201 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 25m

Direct flights

Mon, 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, 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?

  • 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?

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 AirwaysPriceFrom C$ 731Free CancellationRating
7.8
380 reviews
Search Thai Airways flights
Air ChinaPriceFrom C$ 757Free CancellationRating
7.2
138 reviews
Search Air China flights
EVA AirPriceFrom C$ 1,227Free CancellationRating
8.4
1,334 reviews
Search EVA Air 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?

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.

An easier way to manage your Southeast Asia trip

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