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Cheap flights from London Heathrow Airport to Southeast Asia from ₹ 37,622

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 Heathrow Airport to Southeast Asia departing on 30/4. 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 London Heathrow Airport to Southeast Asia

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
18:40 - 18:00LHR-SIN
15h 20m1 stop
Multiple Airlines Logo
23:55 - 09:45SIN-LHR
17h 50m1 stop
₹ 53,999Multiple Airlines
Find Deal
Thu, 4 Dec - Sun, 14 Dec
SWISS Logo
17:10 - 18:00LHR-SIN
16h 50m1 stop
SWISS Logo
00:05 - 08:05SIN-LHR
16h 00m1 stop
₹ 54,176SWISS
Find Deal
Tue, 2 Dec - Wed, 10 Dec
Etihad Airways Logo
08:50 - 09:35LHR-SIN
16h 45m1 stop
Etihad Airways Logo
19:25 - 06:40SIN-LHR
19h 15m1 stop
₹ 54,619Etihad Airways
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Sun, 16 Nov - Fri, 28 Nov
Air India Logo
21:05 - 09:10LHR-IXZ
30h 35m1 stop
Air India Logo
14:20 - 18:55IXZ-LHR
34h 05m2 stops
₹ 55,061Air India
Find Deal
Mon, 17 Nov - Mon, 8 Dec
Air India Logo
21:05 - 09:10LHR-IXZ
30h 35m1 stop
Air India Logo
11:30 - 20:30IXZ-LHR
38h 30m1 stop
₹ 55,150Air India
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Wed, 12 Nov - Thu, 20 Nov
Etihad Airways Logo
13:55 - 09:35LHR-SIN
35h 40m1 stop
Etihad Airways Logo
19:25 - 06:40SIN-LHR
19h 15m1 stop
₹ 55,238Etihad Airways
Find Deal
Sun, 30 Nov - Wed, 10 Dec
Lufthansa Logo
17:30 - 16:55LHR-SIN
15h 25m1 stop
Lufthansa Logo
23:45 - 08:05SIN-LHR
16h 20m1 stop
₹ 55,769Lufthansa
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Sat, 6 Dec - Sat, 13 Dec
Lufthansa Logo
16:30 - 16:55LHR-SIN
16h 25m1 stop
Lufthansa Logo
23:45 - 08:05SIN-LHR
16h 20m1 stop
₹ 55,858Lufthansa
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Mon, 8 Dec - Tue, 16 Dec
Gulf Air Logo
21:50 - 12:30LHR-SIN
30h 40m1 stop
Gulf Air Logo
20:00 - 06:55SIN-LHR
17h 55m1 stop
₹ 59,133Gulf Air
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Mon, 1 Dec - Wed, 29 Apr
Gulf Air Logo
21:50 - 12:30LHR-SIN
30h 40m1 stop
Gulf Air Logo
20:00 - 15:20SIN-LHR
26h 20m1 stop
₹ 59,310Gulf Air
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Mon, 1 Dec - Thu, 30 Apr

SWISS flights from London Heathrow Airport to Southeast Asia

Our best SWISS deals on London Heathrow Airport to Southeast Asia flight tickets
SWISS
2 Dec
LHR17:10London Heathrow
16h 50m
1 stop
SIN18:00Singapore Changi
10 Dec
SIN00:05Singapore Changi
16h 00m
1 stop
LHR08:05London Heathrow
₹ 54,176
Find similar
SWISS
4 Dec
LHR20:05London Heathrow
37h 55m
1 stop
SIN18:00Singapore Changi
7 Dec
SIN00:05Singapore Changi
21h 35m
2 stops
LHR13:40London Heathrow
₹ 57,009
Find similar
SWISS
2 Dec
LHR14:25London Heathrow
19h 35m
2 stops
SIN18:00Singapore Changi
9 Dec
SIN00:05Singapore Changi
16h 00m
1 stop
LHR08:05London Heathrow
₹ 57,097
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Etihad Airways flights from London Heathrow Airport to Southeast Asia

Our best Etihad Airways deals on London Heathrow Airport to Southeast Asia flight tickets
Etihad Airways
6 Nov
LHR13:55London Heathrow
35h 40m
1 stop
SIN09:35Singapore Changi
16 Nov
SIN19:25Singapore Changi
19h 15m
1 stop
LHR06:40London Heathrow
₹ 53,645
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Etihad Airways
16 Nov
LHR08:50London Heathrow
16h 45m
1 stop
SIN09:35Singapore Changi
28 Nov
SIN19:25Singapore Changi
19h 15m
1 stop
LHR06:40London Heathrow
₹ 54,619
Find similar
Etihad Airways
30 Nov
LHR13:55London Heathrow
35h 40m
1 stop
SIN09:35Singapore Changi
10 Dec
SIN19:25Singapore Changi
19h 15m
1 stop
LHR06:40London Heathrow
₹ 55,238
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momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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 1 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 4/12

18:40-18:00

1 stop15h 20m

Singapore Changi

Sun 14/12

23:55-09:45

1 stop17h 50m

₹ 53,999

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 2/12

17:10-18:00

1 stop16h 50m

Singapore Changi

Wed 10/12

00:05-08:05

1 stop16h 00m

₹ 54,176

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 16/11

08:50-09:35

1 stop16h 45m

Singapore Changi

Fri 28/11

19:25-06:40

1 stop19h 15m

₹ 54,619

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Mon 17/11

21:05-09:10

1 stop30h 35m

Port Blair

Mon 8/12

14:20-18:55

2 stops34h 05m

₹ 55,061

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Wed 12/11

21:05-09:10

1 stop30h 35m

Port Blair

Thu 20/11

11:30-20:30

1 stop38h 30m

₹ 55,150

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 30/11

13:55-09:35

1 stop35h 40m

Singapore Changi

Wed 10/12

19:25-06:40

1 stop19h 15m

₹ 55,238

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 6/12

17:30-16:55

1 stop15h 25m

Singapore Changi

Sat 13/12

23:45-08:05

1 stop16h 20m

₹ 55,769

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 8/12

16:30-16:55

1 stop16h 25m

Singapore Changi

Tue 16/12

23:45-08:05

1 stop16h 20m

₹ 55,858

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 1/12

21:50-12:30

1 stop30h 40m

Singapore Changi

Wed 29/4

20:00-06:55

1 stop17h 55m

₹ 59,133

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 1/12

21:50-12:30

1 stop30h 40m

Singapore Changi

Thu 30/4

20:00-15:20

1 stop26h 20m

₹ 59,310

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 Heathrow Airport 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, September is the cheapest month to fly from London Heathrow Airport to Southeast Asia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 72,500. If you aren’t able to travel during the month of September, then book flights to Southeast Asia from London Heathrow Airport during May instead. Flights to Southeast Asia in May, while not as cheap as those in September, still average around ₹ 72,943.

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

The cheapest day to depart from London Heathrow Airport 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 ₹ 85,621. The most expensive day to fly to Southeast Asia is Wednesday, with ticket prices averaging around ₹ 124,841.

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 Heathrow Airport to Southeast Asia in the afternoon for as low as ₹ 70,419. 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 ₹ 114,705 on average. Flights to Southeast Asia from London Heathrow Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest London Heathrow to Southeast Asia flight route?

Fly from London Heathrow to Singapore Changi for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around ₹ 83,573 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 Heathrow Airport for as low as ₹ 77,103 on momondo.

What cabin class options are available on London Heathrow to Southeast Asia flights?

There are 3 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Southeast Asia.

Cheap London Heathrow Airport to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Southeast Asia

Fastest flight time

13h 00m

Direct flights

Every day

Airports in Southeast Asia

1 airport
The fastest flight from London Heathrow Airport to Southeast Asia takes 13h 00m
Direct flights go from London Heathrow Airport 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 Heathrow Airport to Southeast Asia?

    Prices for flights from London Heathrow Airport to Southeast Asia are refreshed on a daily basis.

  • How old do you have to be to fly from London Heathrow Airport 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 Heathrow Airport to Southeast Asia.

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

    The travel and health documents required for your trip to Southeast Asia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Southeast Asia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London Heathrow Airport to Southeast Asia?

Best airlines flying from London Heathrow Airport to Southeast Asia

Compare and see reviews for airlines that fly from London Heathrow Airport to Southeast Asia with momondo
Airline
Rating
Free Cancellation
Price
Thai AirwaysPriceFrom ₹ 76,828Free CancellationRating
7.8
361 reviews
Search Thai Airways flights
EVA AirPriceFrom ₹ 85,621Free CancellationRating
8.4
1,268 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?

momondo does allow users to show only those flights to Southeast Asia from London which offer a flexible booking policy as well as other useful filters and features.

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?

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, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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