Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from London to Southeast Asia from C$ 567

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 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London to Southeast Asia

Cheap round-trip flights

Norse Atlantic UK Logo
4:00 p.m. - 10:25 a.m.LGW-BKK
11h 25mdirect
Norse Atlantic UK Logo
8:25 a.m. - 2:25 p.m.BKK-LGW
13h 00mdirect
C$ 826Norse Atlantic UK
Find Deal
Tue, 2 Dec - Tue, 16 Dec
Norse Atlantic UK Logo
4:00 p.m. - 10:25 a.m.LGW-BKK
11h 25mdirect
Norse Atlantic UK Logo
12:25 p.m. - 6:20 p.m.BKK-LGW
12h 55mdirect
C$ 836Norse Atlantic UK
Find Deal
Tue, 4 Nov - Thu, 18 Dec
Shenzhen Airlines Logo
9:10 p.m. - 11:10 a.m.LHR-BKK
31h 00m1 stop
Shenzhen Airlines Logo
3:15 a.m. - 7:10 p.m.BKK-LHR
22h 55m1 stop
C$ 836Shenzhen Airlines
Find Deal
Sun, 2 Nov - Sat, 29 Nov
Shenzhen Airlines Logo
9:10 p.m. - 6:30 p.m.LHR-BKK
38h 20m1 stop
Shenzhen Airlines Logo
7:30 p.m. - 7:10 p.m.BKK-LHR
30h 40m1 stop
C$ 837Shenzhen Airlines
Find Deal
Fri, 7 Nov - Sun, 30 Nov
Logo
9:15 a.m. - 1:25 a.m.LGW-BKK
33h 10m1 stop
Logo
12:40 p.m. - 8:35 a.m.BKK-LGW
26h 55m1 stop
C$ 864
Find Deal
Tue, 2 Dec - Mon, 15 Dec
Logo
1:55 p.m. - 11:20 p.m.LGW-BKK
26h 25m2 stops
Logo
12:25 p.m. - 6:20 p.m.BKK-LGW
12h 55mdirect
C$ 875
Find Deal
Sat, 13 Dec - Thu, 25 Dec
Austrian Airlines Logo
9:05 a.m. - 12:20 p.m.LHR-BKK
20h 15m1 stop
Austrian Airlines Logo
11:50 p.m. - 8:20 a.m.BKK-LHR
15h 30m1 stop
C$ 886Austrian Airlines
Find Deal
Fri, 6 Mar - Wed, 18 Mar
Austrian Airlines Logo
1:55 p.m. - 3:30 p.m.LHR-BKK
18h 35m1 stop
Austrian Airlines Logo
2:00 p.m. - 9:40 p.m.BKK-LHR
14h 40m1 stop
C$ 891Austrian Airlines
Find Deal
Sun, 8 Feb - Mon, 16 Feb
Etihad Airways Logo
2:45 p.m. - 11:55 p.m.LHR-BKK
27h 10m1 stop
Etihad Airways Logo
2:55 a.m. - 2:30 p.m.BKK-LHR
18h 35m1 stop
C$ 940Etihad Airways
Find Deal
Mon, 29 Sep - Wed, 5 Nov
Etihad Airways Logo
1:55 p.m. - 11:20 p.m.LHR-BKK
26h 25m1 stop
Etihad Airways Logo
2:55 a.m. - 2:30 p.m.BKK-LHR
18h 35m1 stop
C$ 943Etihad Airways
Find Deal
Thu, 13 Nov - Mon, 9 Mar

Shenzhen Airlines flights from London to Southeast Asia

Our best Shenzhen Airlines deals on London to Southeast Asia flight tickets
Shenzhen Airlines
2 Nov
LHR9:10 p.m.London Heathrow
31h 00m
1 stop
BKK11:10 a.m.Bangkok Suvarnabhumi
29 Nov
BKK3:15 a.m.Bangkok Suvarnabhumi
22h 55m
1 stop
LHR7:10 p.m.London Heathrow
C$ 836
Find similar
Shenzhen Airlines
7 Nov
LHR9:10 p.m.London Heathrow
38h 20m
1 stop
BKK6:30 p.m.Bangkok Suvarnabhumi
30 Nov
BKK7:30 p.m.Bangkok Suvarnabhumi
30h 40m
1 stop
LHR7:10 p.m.London Heathrow
C$ 837
Find similar
Shenzhen Airlines
26 Sep
LHR10:05 p.m.London Heathrow
22h 10m
1 stop
BKK2:15 a.m.Bangkok Suvarnabhumi
21 Oct
BKK3:15 a.m.Bangkok Suvarnabhumi
22h 45m
1 stop
LHR8:00 p.m.London Heathrow
C$ 878
Find similar

Qatar Airways flights from London to Southeast Asia

Our best Qatar Airways deals on London to Southeast Asia flight tickets
Qatar Airways
17 Sep
LGW9:00 a.m.London Gatwick
16h 20m
1 stop
BKK7:20 a.m.Bangkok Suvarnabhumi
24 Sep
BKK2:30 a.m.Bangkok Suvarnabhumi
16h 55m
1 stop
LGW1:25 p.m.London Gatwick
C$ 999
Find similar
Qatar Airways
18 Sep
LGW9:00 a.m.London Gatwick
15h 55m
1 stop
BKK6:55 a.m.Bangkok Suvarnabhumi
7 Oct
BKK9:05 p.m.Bangkok Suvarnabhumi
15h 35m
1 stop
LGW6:40 a.m.London Gatwick
C$ 1,009
Find similar
Qatar Airways
25 Sep
LGW9:00 a.m.London Gatwick
15h 55m
1 stop
BKK6:55 a.m.Bangkok Suvarnabhumi
20 Oct
BKK8:55 a.m.Bangkok Suvarnabhumi
27h 45m
1 stop
LGW6:40 a.m.London Gatwick
C$ 1,013
Find similar

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 15 September 2025.
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

Tue 2/12

4:00 p.m.-10:25 a.m.

Nonstop11h 25m

Bangkok Suvarnabhumi

Tue 16/12

8:25 a.m.-2:25 p.m.

Nonstop13h 00m

C$ 826

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 4/11

4:00 p.m.-10:25 a.m.

Nonstop11h 25m

Bangkok Suvarnabhumi

Thu 18/12

12:25 p.m.-6:20 p.m.

Nonstop12h 55m

C$ 836

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 2/11

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

1 stop31h 00m

Bangkok Suvarnabhumi

Sat 29/11

3:15 a.m.-7:10 p.m.

1 stop22h 55m

C$ 836

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 7/11

9:10 p.m.-6:30 p.m.

1 stop38h 20m

Bangkok Suvarnabhumi

Sun 30/11

7:30 p.m.-7:10 p.m.

1 stop30h 40m

C$ 837

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 2/12

9:15 a.m.-1:25 a.m.

1 stop33h 10m

Bangkok Suvarnabhumi

Mon 15/12

12:40 p.m.-8:35 a.m.

1 stop26h 55m

C$ 864

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sat 13/12

1:55 p.m.-11:20 p.m.

2 stops26h 25m

Bangkok Suvarnabhumi

Thu 25/12

12:25 p.m.-6:20 p.m.

Nonstop12h 55m

C$ 875

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 6/3

9:05 a.m.-12:20 p.m.

1 stop20h 15m

Bangkok Suvarnabhumi

Wed 18/3

11:50 p.m.-8:20 a.m.

1 stop15h 30m

C$ 886

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 8/2

1:55 p.m.-3:30 p.m.

1 stop18h 35m

Bangkok Suvarnabhumi

Mon 16/2

2:00 p.m.-9:40 p.m.

1 stop14h 40m

C$ 891

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 29/9

2:45 p.m.-11:55 p.m.

1 stop27h 10m

Bangkok Suvarnabhumi

Wed 5/11

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

1 stop18h 35m

C$ 940

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 13/11

1:55 p.m.-11:20 p.m.

1 stop26h 25m

Bangkok Suvarnabhumi

Mon 9/3

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

1 stop18h 35m

C$ 943

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 November. Flight prices, which tend to average around C$ 1,010, 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 May to fly from London, when ticket prices are also cheap, with an average price of C$ 1,021.

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 Tuesday when prices can be found for as low as C$ 927. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around C$ 1,296. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

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 C$ 936. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Southeast Asia are more costly in the afternoon, with an average ticket price of C$ 1,119. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 C$ 1,294 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$ 1,211 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, Tue, Wed, Thu, Sat and Sun

Airports in Southeast Asia

1 airport
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 is 1 airport near Southeast Asia: 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$ 745Free CancellationRating
7.8
350 reviews
Search Thai Airways flights
Air ChinaPriceFrom C$ 771Free CancellationRating
7.2
99 reviews
Search Air China flights
EVA AirPriceFrom C$ 1,251Free CancellationRating
8.4
1,236 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 15/10
Wed 22/10
By creating a price alert you accept our terms of use and privacy policy.

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
Flights to Torontofrom C$ 101
Flights to Vancouverfrom C$ 57
Flights to Montrealfrom C$ 147
Flights to New Delhifrom C$ 1,060
Flights to Calgaryfrom C$ 58
Flights to Parisfrom C$ 570
Flights to Londonfrom C$ 550
Flights to Cancúnfrom C$ 318
Flights to Manilafrom C$ 698
Flights to Tokyofrom C$ 764
Flights to Bangkokfrom C$ 641
Flights to Istanbulfrom C$ 771