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Cheap flights from the United Kingdom to Southeast Asia from ₹ 28,998

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 12/11. 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

Shenzhen Airlines Logo
22:05 - 02:30LHR-SIN
21h 25m1 stop
Shenzhen Airlines Logo
03:30 - 19:50SIN-LHR
23h 20m1 stop
₹ 47,252Shenzhen Airlines
Find Deal
Sun, 14 Sep - Sun, 28 Sep
Shenzhen Airlines Logo
22:05 - 11:55LHR-SIN
30h 50m1 stop
Shenzhen Airlines Logo
03:30 - 20:00SIN-LHR
23h 30m1 stop
₹ 47,601Shenzhen Airlines
Find Deal
Mon, 1 Sep - Tue, 30 Sep
Lufthansa Logo
17:50 - 16:40LHR-SIN
15h 50m1 stop
Lufthansa Logo
23:25 - 08:15SIN-LHR
15h 50m1 stop
₹ 48,737Lufthansa
Find Deal
Thu, 18 Sep - Mon, 29 Sep
Lufthansa Logo
07:25 - 16:40LHR-SIN
26h 15m1 stop
Lufthansa Logo
23:25 - 08:15SIN-LHR
15h 50m1 stop
₹ 48,824Lufthansa
Find Deal
Sun, 14 Sep - Mon, 29 Sep
Logo
17:50 - 16:40LHR-SIN
15h 50m1 stop
Logo
23:20 - 07:55SIN-LHR
15h 35m1 stop
₹ 50,484
Find Deal
Thu, 18 Sep - Tue, 23 Sep
SWISS Logo
08:40 - 17:05LHR-SIN
25h 25m1 stop
SWISS Logo
23:20 - 07:55SIN-LHR
15h 35m1 stop
₹ 52,405SWISS
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Logo
17:50 - 16:40LHR-SIN
15h 50m1 stop
Logo
23:20 - 11:25SIN-LHR
19h 05m1 stop
₹ 52,667
Find Deal
Thu, 18 Sep - Tue, 23 Sep
SWISS Logo
08:40 - 17:05LHR-SIN
25h 25m1 stop
SWISS Logo
23:20 - 07:55SIN-LHR
15h 35m1 stop
₹ 52,755SWISS
Find Deal
Wed, 24 Sep - Wed, 1 Oct
Air India Logo
13:15 - 09:25LHR-IXZ
15h 40m1 stop
Air India Logo
10:25 - 11:30IXZ-LHR
29h 35m1 stop
₹ 54,676Air India
Find Deal
Sun, 14 Sep - Sun, 21 Sep
Air India Logo
22:10 - 09:25LHR-IXZ
30h 45m2 stops
Air India Logo
10:25 - 07:30IXZ-LHR
25h 35m1 stop
₹ 54,851Air India
Find Deal
Sun, 14 Sep - Sun, 21 Sep

SWISS flights from United Kingdom to Southeast Asia

Our best SWISS deals on United Kingdom to Southeast Asia flight tickets
SWISS
15 Sept
LHR08:40London Heathrow
25h 25m
1 stop
SIN17:05Singapore Changi
22 Sept
SIN23:20Singapore Changi
15h 35m
1 stop
LHR07:55London Heathrow
₹ 52,405
Find similar
SWISS
24 Sept
LHR08:40London Heathrow
25h 25m
1 stop
SIN17:05Singapore Changi
1 Oct
SIN23:20Singapore Changi
15h 35m
1 stop
LHR07:55London Heathrow
₹ 52,755
Find similar
SWISS
6 Oct
LHR06:00London Heathrow
28h 05m
1 stop
SIN17:05Singapore Changi
26 Oct
SIN00:05Singapore Changi
16h 00m
1 stop
LHR08:05London Heathrow
₹ 54,763
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Finnair flights from United Kingdom to Southeast Asia

Our best Finnair deals on United Kingdom to Southeast Asia flight tickets
Finnair
14 Sept
LHR10:20London Heathrow
25h 05m
1 stop
SIN18:25Singapore Changi
21 Sept
SIN21:35Singapore Changi
31h 35m
1 stop
LHR22:10London Heathrow
₹ 57,995
Find similar
Finnair
5 Aug
LHR10:20London Heathrow
25h 05m
1 stop
SIN18:25Singapore Changi
15 Sept
SIN21:35Singapore Changi
31h 35m
1 stop
LHR22:10London Heathrow
₹ 71,708
Find similar
Finnair
15 Aug
LHR07:30London Heathrow
27h 55m
1 stop
SIN18:25Singapore Changi
6 Sept
SIN21:35Singapore Changi
26h 30m
1 stop
LHR17:05London Heathrow
₹ 83,499
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 2 August 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

Sun 14/9

22:05-02:30

1 stop21h 25m

Singapore Changi

Sun 28/9

03:30-19:50

1 stop23h 20m

₹ 47,252

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 1/9

22:05-11:55

1 stop30h 50m

Singapore Changi

Tue 30/9

03:30-20:00

1 stop23h 30m

₹ 47,601

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 18/9

17:50-16:40

1 stop15h 50m

Singapore Changi

Mon 29/9

23:25-08:15

1 stop15h 50m

₹ 48,737

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 14/9

07:25-16:40

1 stop26h 15m

Singapore Changi

Mon 29/9

23:25-08:15

1 stop15h 50m

₹ 48,824

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 18/9

17:50-16:40

1 stop15h 50m

Singapore Changi

Tue 23/9

23:20-07:55

1 stop15h 35m

₹ 50,484

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 15/9

08:40-17:05

1 stop25h 25m

Singapore Changi

Mon 22/9

23:20-07:55

1 stop15h 35m

₹ 52,405

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 18/9

17:50-16:40

1 stop15h 50m

Singapore Changi

Tue 23/9

23:20-11:25

1 stop19h 05m

₹ 52,667

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 24/9

08:40-17:05

1 stop25h 25m

Singapore Changi

Wed 1/10

23:20-07:55

1 stop15h 35m

₹ 52,755

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 14/9

13:15-09:25

1 stop15h 40m

Port Blair

Sun 21/9

10:25-11:30

1 stop29h 35m

₹ 54,676

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 14/9

22:10-09:25

2 stops30h 45m

Port Blair

Sun 21/9

10:25-07:30

1 stop25h 35m

₹ 54,851

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 ₹ 47,514. 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 ₹ 64,284.

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 ₹ 84,194. The most expensive day to fly to Southeast Asia is Wednesday, with ticket prices averaging around ₹ 129,750.

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 ₹ 69,480. 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 ₹ 113,175 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 ₹ 82,501 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 ₹ 76,162 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

Best price found

₹ 28,998

Fastest flight time

12h 55m

Direct flights

Every day

Airports in Southeast Asia

2 airports
The best one-way flight to Southeast Asia from United Kingdom in the past 72 hours is ₹ 28,998. The best return flight deal from United Kingdom to Southeast Asia found on momondo in the last 72 hours is ₹ 47,252.
The fastest flight from United Kingdom to Southeast Asia takes 12h 55m
Direct flights go from United Kingdom to Southeast Asia every day.
There are 2 airports near Southeast Asia: Singapore Changi (SIN), Port Blair (IXZ)
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
Etihad AirwaysPriceFrom ₹ 64,656Free CancellationRating
7.4
1,230 reviews
Search Etihad Airways flights
EVA AirPriceFrom ₹ 74,708Free CancellationRating
8.4
1,220 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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