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Cheap flights from London to Southeast Asia from ₹ 39,018

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 28/10. 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 return flights

Logo
17:50 - 17:25LHR-SIN
15h 35m1 stop
Logo
00:05 - 08:05SIN-LHR
16h 00m1 stop
₹ 54,202
Find Deal
Tue, 4 Nov - Mon, 24 Nov
Logo
17:50 - 17:25LHR-SIN
15h 35m1 stop
Logo
00:05 - 08:05SIN-LHR
16h 00m1 stop
₹ 54,290
Find Deal
Thu, 6 Nov - Tue, 18 Nov
Lufthansa Logo
17:50 - 17:25LHR-SIN
15h 35m1 stop
Lufthansa Logo
23:55 - 08:45SIN-LHR
16h 50m1 stop
₹ 54,555Lufthansa
Find Deal
Fri, 6 Mar - Sat, 21 Mar
Lufthansa Logo
17:50 - 17:25LHR-SIN
15h 35m1 stop
Lufthansa Logo
23:45 - 08:05SIN-LHR
16h 20m1 stop
₹ 56,055Lufthansa
Find Deal
Fri, 5 Dec - Tue, 27 Jan
SWISS Logo
18:40 - 18:00LHR-SIN
15h 20m1 stop
SWISS Logo
00:05 - 08:05SIN-LHR
16h 00m1 stop
₹ 56,144SWISS
Find Deal
Wed, 5 Nov - Mon, 24 Nov
SWISS Logo
18:40 - 18:00LHR-SIN
15h 20m1 stop
SWISS Logo
00:05 - 08:05SIN-LHR
16h 00m1 stop
₹ 56,232SWISS
Find Deal
Wed, 5 Nov - Mon, 24 Nov
Logo
17:10 - 18:00LHR-SIN
16h 50m1 stop
Logo
23:55 - 08:45SIN-LHR
16h 50m1 stop
₹ 56,320
Find Deal
Sun, 8 Mar - Sun, 22 Mar
KLM Logo
15:45 - 16:15LHR-SIN
16h 30m1 stop
KLM Logo
01:40 - 10:45SIN-LHR
17h 05m1 stop
₹ 58,439KLM
Find Deal
Wed, 12 Nov - Tue, 18 Nov
Etihad Airways Logo
09:30 - 09:40LHR-SIN
17h 10m1 stop
Etihad Airways Logo
21:10 - 07:00SIN-LHR
16h 50m1 stop
₹ 58,615Etihad Airways
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Wed, 24 Sep - Fri, 24 Oct
Etihad Airways Logo
21:45 - 09:40LHR-SIN
28h 55m1 stop
Etihad Airways Logo
21:10 - 18:45SIN-LHR
28h 35m1 stop
₹ 58,704Etihad Airways
Find Deal
Thu, 2 Oct - Mon, 13 Oct

Lufthansa flights from London to Southeast Asia

Our best Lufthansa deals on London to Southeast Asia flight tickets
Lufthansa
6 Mar
LHR17:50London Heathrow
15h 35m
1 stop
SIN17:25Singapore Changi
21 Mar
SIN23:55Singapore Changi
16h 50m
1 stop
LHR08:45London Heathrow
₹ 54,555
Find similar
Lufthansa
5 Dec
LHR17:50London Heathrow
15h 35m
1 stop
SIN17:25Singapore Changi
27 Jan
SIN23:45Singapore Changi
16h 20m
1 stop
LHR08:05London Heathrow
₹ 56,055
Find similar
Lufthansa
28 Feb
LHR16:30London Heathrow
16h 25m
1 stop
SIN16:55Singapore Changi
16 Mar
SIN23:55Singapore Changi
18h 50m
1 stop
LHR10:45London Heathrow
₹ 56,497
Find similar

SWISS flights from London to Southeast Asia

Our best SWISS deals on London to Southeast Asia flight tickets
SWISS
5 Nov
LHR18:40London Heathrow
15h 20m
1 stop
SIN18:00Singapore Changi
24 Nov
SIN00:05Singapore Changi
16h 00m
1 stop
LHR08:05London Heathrow
₹ 56,144
Find similar
SWISS
5 Nov
LHR18:40London Heathrow
15h 20m
1 stop
SIN18:00Singapore Changi
24 Nov
SIN00:05Singapore Changi
16h 00m
1 stop
LHR08:05London Heathrow
₹ 56,232
Find similar
SWISS
4 Nov
LHR14:25London Heathrow
19h 35m
2 stops
SIN18:00Singapore Changi
25 Nov
SIN00:05Singapore Changi
16h 00m
1 stop
LHR08:05London Heathrow
₹ 59,233
Find similar

momondo Fare Finder

 
Customise 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 59,053 searches. Data last updated 14 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

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 4/11

17:50-17:25

1 stop15h 35m

Singapore Changi

Mon 24/11

00:05-08:05

1 stop16h 00m

₹ 54,202

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 6/11

17:50-17:25

1 stop15h 35m

Singapore Changi

Tue 18/11

00:05-08:05

1 stop16h 00m

₹ 54,290

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 6/3

17:50-17:25

1 stop15h 35m

Singapore Changi

Sat 21/3

23:55-08:45

1 stop16h 50m

₹ 54,555

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 5/12

17:50-17:25

1 stop15h 35m

Singapore Changi

Tue 27/1

23:45-08:05

1 stop16h 20m

₹ 56,055

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 5/11

18:40-18:00

1 stop15h 20m

Singapore Changi

Mon 24/11

00:05-08:05

1 stop16h 00m

₹ 56,144

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 5/11

18:40-18:00

1 stop15h 20m

Singapore Changi

Mon 24/11

00:05-08:05

1 stop16h 00m

₹ 56,232

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 8/3

17:10-18:00

1 stop16h 50m

Singapore Changi

Sun 22/3

23:55-08:45

1 stop16h 50m

₹ 56,320

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 12/11

15:45-16:15

1 stop16h 30m

Singapore Changi

Tue 18/11

01:40-10:45

1 stop17h 05m

₹ 58,439

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 24/9

09:30-09:40

1 stop17h 10m

Singapore Changi

Fri 24/10

21:10-07:00

1 stop16h 50m

₹ 58,615

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 2/10

21:45-09:40

1 stop28h 55m

Singapore Changi

Mon 13/10

21:10-18:45

1 stop28h 35m

₹ 58,704

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 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?

In general, May is the cheapest month to fly from London to Southeast Asia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 47,757. If you aren’t able to travel during the month of May, then book flights to Southeast Asia from London during September instead. Flights to Southeast Asia in September, while not as cheap as those in May, still average around ₹ 64,795.

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 Thursday. Travellers who choose to depart for Southeast Asia on a Thursday will often find tickets for as low as ₹ 85,383. The most expensive day to fly to Southeast Asia is Wednesday, with ticket prices averaging around ₹ 125,370.

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 London to Southeast Asia in the afternoon for as low as ₹ 70,223. 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 ₹ 114,386 on average. Flights to Southeast Asia from London in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest London to Southeast Asia flight route?

Fly from London Gatwick 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 ₹ 83,450 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 London for as low as ₹ 76,800 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

13h 00m

Direct flights

Every day

Airports in Southeast Asia

1 airport
The fastest flight from London to Southeast Asia takes 13h 00m
Direct flights go from London to Southeast Asia every day.
There is 1 airport near Southeast Asia: Singapore Changi (SIN)
Search flight deals

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

    Prices for flights from London to Southeast Asia refresh daily.

  • How old do you have to be to fly from London to Southeast Asia?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London 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 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
EVA AirPriceFrom ₹ 85,383Free 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?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Southeast Asia from London.

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

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

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

momondo helps you find the best flight between London and Southeast Asia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Southeast Asia from London. 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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