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Cheap flights from the United Kingdom to Southeast Asia from ₹ 37,630

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Southeast Asia departing on 18/4. 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 the United Kingdom to Southeast Asia

Recent return flight deals from the United Kingdom to Southeast Asia

Enter your travel dates to find the best prices.
Lufthansa Logo
16:25 - 16:40
LHR
-
SIN
17h 15m1 stop
Lufthansa Logo
23:25 - 08:15
SIN
-
LHR
15h 50m1 stop
₹ 57,035Lufthansa
Sat, 25 Apr - Sun, 10 May
Lufthansa Logo
17:50 - 16:40
LHR
-
SIN
15h 50m1 stop
Lufthansa Logo
23:25 - 09:55
SIN
-
LHR
17h 30m1 stop
₹ 57,488Lufthansa
Sat, 18 Apr - Sun, 24 May
Lufthansa Logo
17:50 - 16:40
LHR
-
SIN
15h 50m1 stop
Lufthansa Logo
23:40 - 10:40
SIN
-
LHR
18h 00m1 stop
₹ 58,123Lufthansa
Sun, 19 Apr - Mon, 25 May
Air India Logo
21:05 - 09:10
LHR
-
IXZ
30h 35m1 stop
Air India Logo
09:40 - 19:30
IXZ
-
LHR
15h 20m1 stop
₹ 58,758Air India
Thu, 19 Feb - Thu, 19 Mar
Air India Logo
13:30 - 14:25
LHR
-
IXZ
19h 25m2 stops
Air India Logo
09:40 - 19:30
IXZ
-
LHR
15h 20m1 stop
₹ 58,939Air India
Thu, 19 Feb - Thu, 19 Mar
Air India Logo
21:05 - 08:55
LHR
-
IXZ
30h 20m1 stop
Air India Logo
09:40 - 19:30
IXZ
-
LHR
15h 20m1 stop
₹ 59,030Air India
Thu, 29 Jan - Thu, 5 Feb
Multiple Airlines Logo
09:55 - 15:40
LHR
-
SIN
22h 45m1 stop
Multiple Airlines Logo
22:20 - 08:00
SIN
-
LHR
16h 40m1 stop
₹ 59,121Multiple Airlines
Tue, 26 May - Mon, 8 Jun
Air India Logo
22:00 - 08:55
LHR
-
IXZ
29h 25m2 stops
Air India Logo
09:40 - 19:30
IXZ
-
LHR
15h 20m1 stop
₹ 59,393Air India
Thu, 29 Jan - Thu, 5 Feb
SWISS Logo
18:40 - 18:00
LHR
-
SIN
15h 20m1 stop
SWISS Logo
00:05 - 13:40
SIN
-
LHR
21h 35m2 stops
₹ 61,116SWISS
Wed, 4 Mar - Tue, 17 Mar
Multiple Airlines Logo
17:50 - 17:25
LHR
-
SIN
15h 35m1 stop
Multiple Airlines Logo
00:05 - 11:15
SIN
-
LHR
19h 10m1 stop
₹ 61,478Multiple Airlines
Thu, 29 Jan - Wed, 4 Feb

Shenzhen Airlines flights from United Kingdom to Southeast Asia

Our best Shenzhen Airlines deals on United Kingdom to Southeast Asia flight tickets
Shenzhen Airlines
16 Jan
LHR21:10London Heathrow
20h 50m
1 stop
SIN02:00Singapore Changi
23 Jan
SIN03:00Singapore Changi
24h 10m
1 stop
LHR19:10London Heathrow
₹ 62,113
Find similar
Shenzhen Airlines
26 Apr
LHR22:05London Heathrow
31h 05m
1 stop
SIN12:10Singapore Changi
12 May
SIN18:10Singapore Changi
32h 50m
1 stop
LHR20:00London Heathrow
₹ 63,564
Find similar
Shenzhen Airlines
12 Jun
LHR22:05London Heathrow
35h 35m
1 stop
SIN16:40Singapore Changi
26 Jun
SIN13:20Singapore Changi
37h 30m
1 stop
LHR19:50London Heathrow
₹ 69,095
Find similar

Gulf Air flights from United Kingdom to Southeast Asia

Our best Gulf Air deals on United Kingdom to Southeast Asia flight tickets
Gulf Air
22 Jan
LHR09:30London Heathrow
19h 00m
1 stop
SIN12:30Singapore Changi
26 Jan
SIN20:00Singapore Changi
26h 45m
1 stop
LHR14:45London Heathrow
₹ 62,657
Find similar
Gulf Air
28 May
LHR10:00London Heathrow
19h 20m
1 stop
SIN12:20Singapore Changi
11 Jun
SIN20:00Singapore Changi
26h 20m
1 stop
LHR15:20London Heathrow
₹ 64,108
Find similar
Gulf Air
3 Feb
LHR21:50London Heathrow
30h 40m
1 stop
SIN12:30Singapore Changi
28 Feb
SIN20:00Singapore Changi
18h 35m
1 stop
LHR06:35London Heathrow
₹ 65,105
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 59,053 searches. Data last updated 16 December 2025.
Use the filters below to find and compare flights from the United Kingdom to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 25/4

16:25-16:40

1 stop17h 15m

Singapore Changi

Sun 10/5

23:25-08:15

1 stop15h 50m

₹ 57,035

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 18/4

17:50-16:40

1 stop15h 50m

Singapore Changi

Sun 24/5

23:25-09:55

1 stop17h 30m

₹ 57,488

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 19/4

17:50-16:40

1 stop15h 50m

Singapore Changi

Mon 25/5

23:40-10:40

1 stop18h 00m

₹ 58,123

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 19/2

21:05-09:10

1 stop30h 35m

Port Blair

Thu 19/3

09:40-19:30

1 stop15h 20m

₹ 58,758

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 19/2

13:30-14:25

2 stops19h 25m

Port Blair

Thu 19/3

09:40-19:30

1 stop15h 20m

₹ 58,939

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 29/1

21:05-08:55

1 stop30h 20m

Port Blair

Thu 5/2

09:40-19:30

1 stop15h 20m

₹ 59,030

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 26/5

09:55-15:40

1 stop22h 45m

Singapore Changi

Mon 8/6

22:20-08:00

1 stop16h 40m

₹ 59,121

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 29/1

22:00-08:55

2 stops29h 25m

Port Blair

Thu 5/2

09:40-19:30

1 stop15h 20m

₹ 59,393

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 4/3

18:40-18:00

1 stop15h 20m

Singapore Changi

Tue 17/3

00:05-13:40

2 stops21h 35m

₹ 61,116

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 29/1

17:50-17:25

1 stop15h 35m

Singapore Changi

Wed 4/2

00:05-11:15

1 stop19h 10m

₹ 61,478

Flights are sorted by cheapest return 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 United Kingdom 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?

In general, May is the cheapest month to fly from United Kingdom to Southeast Asia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 48,058. If you aren’t able to travel during the month of May, then book flights to Southeast Asia from United Kingdom during September instead. Flights to Southeast Asia in September, while not as cheap as those in May, still average around ₹ 65,831.

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

The cheapest day to depart from United Kingdom to Southeast Asia is on a Thursday. Travellers who choose to depart for Southeast Asia on a Thursday will often find tickets for as low as ₹ 87,703. The most expensive day to fly to Southeast Asia is Wednesday, with ticket prices averaging around ₹ 127,877.

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 afternoon. momondo users have found flights departing from United Kingdom to Southeast Asia in the afternoon for as low as ₹ 72,132. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are ₹ 117,495 on average. Flights to Southeast Asia from United Kingdom in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest United Kingdom to Southeast Asia flight route?

Fly from London Gatwick to Singapore Changi for the best United Kingdom - 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 United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around ₹ 85,265 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 United Kingdom for as low as ₹ 79,432 on momondo.

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

There are 3 cabin classes available to choose from on United Kingdom 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 United Kingdom to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between United Kingdom to Southeast Asia.

Cheap United Kingdom to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Southeast Asia

Fastest flight time

13h 10m

Direct flights

Every day

Airports in Southeast Asia

295 airports
The fastest flight from United Kingdom to Southeast Asia takes 13h 10m
Direct flights go from United Kingdom to Southeast Asia every day.
There are 295 airports in Southeast Asia. From United Kingdom there are direct flights to Singapore Changi (SIN).
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to Southeast Asia?

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

  • How old do you have to be to fly from United Kingdom 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 United Kingdom to Southeast Asia.

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

    The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from United Kingdom to Southeast Asia?

Best airlines flying from United Kingdom to Southeast Asia

Compare and see reviews for airlines that fly from United Kingdom to Southeast Asia with momondo
Airline
Rating
Free Cancellation
Price
EVA AirPriceFrom ₹ 87,703Free CancellationRating
8.5
1,297 reviews
Search EVA Air flights

Why use momondo?

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

It is quick and easy to find United Kingdom to Southeast Asia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Southeast Asia that suits you.

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

Yes. All flights to Southeast Asia from United Kingdom on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for United Kingdom to Southeast Asia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Southeast Asia from United Kingdom. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when 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.
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Popular flights according to clicks in the last 7 days on momondo
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