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Cheap flights from London to Southeast Asia from ₹ 37,104

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 19/3. 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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Cheap return flights

Enter your travel dates to find the best prices.
Air India Logo
21:05 - 14:25
LHR
-
IXZ
35h 50m
1 stop
Air India Logo
09:25 - 19:30
IXZ
-
LHR
15h 35m
1 stop
₹ 58,502Air India
Fri, 6 Mar - Sun, 15 Mar
Air India Logo
13:30 - 14:25
LHR
-
IXZ
19h 25m
2 stops
Air India Logo
09:25 - 19:30
IXZ
-
LHR
15h 35m
1 stop
₹ 58,686Air India
Fri, 6 Mar - Sun, 15 Mar
Air India Logo
22:20 - 14:25
LHR
-
IXZ
35h 35m
1 stop
Air India Logo
11:30 - 11:30
IXZ
-
LHR
28h 30m
1 stop
₹ 58,962Air India
Fri, 29 May - Tue, 2 Jun
Air India Logo
22:20 - 14:25
LHR
-
IXZ
35h 35m
1 stop
Air India Logo
11:30 - 10:15
IXZ
-
LHR
27h 15m
2 stops
₹ 59,145Air India
Fri, 29 May - Tue, 2 Jun
China Eastern Logo
21:20 - 05:25
LHR
-
SIN
25h 05m
1 stop
China Eastern Logo
23:10 - 18:40
SIN
-
LHR
26h 30m
1 stop
₹ 59,237China Eastern
Tue, 7 Apr - Sun, 10 May
Air India Logo
12:30 - 14:25
LHR
-
IXZ
21h 25m
2 stops
Air India Logo
11:30 - 10:15
IXZ
-
LHR
27h 15m
2 stops
₹ 59,237Air India
Fri, 29 May - Tue, 2 Jun
China Eastern Logo
21:00 - 11:40
LHR
-
SIN
30h 40m
2 stops
China Eastern Logo
14:00 - 17:30
SIN
-
LHR
59h 30m
2 stops
₹ 59,329China Eastern
Wed, 11 Mar - Mon, 16 Mar
Lufthansa Logo
17:50 - 16:35
LHR
-
SIN
15h 45m
1 stop
Lufthansa Logo
23:40 - 08:40
SIN
-
LHR
16h 00m
1 stop
₹ 60,339Lufthansa
Wed, 15 Apr - Mon, 25 May
Shenzhen Airlines Logo
21:10 - 17:30
LHR
-
SIN
36h 20m
1 stop
Shenzhen Airlines Logo
18:30 - 19:10
SIN
-
LHR
32h 40m
1 stop
₹ 60,523Shenzhen Airlines
Wed, 11 Mar - Sun, 15 Mar
Shenzhen Airlines Logo
21:10 - 12:10
LHR
-
SIN
31h 00m
1 stop
Shenzhen Airlines Logo
18:30 - 19:10
SIN
-
LHR
32h 40m
1 stop
₹ 61,349Shenzhen Airlines
Wed, 11 Mar - Sun, 15 Mar

China Eastern flights from London to Southeast Asia

Our best China Eastern deals on London to Southeast Asia flight tickets
China Eastern
7 Apr
LHR21:20London Heathrow
25h 05m
1 stop
SIN05:25Singapore Changi
10 May
SIN23:10Singapore Changi
26h 30m
1 stop
LHR18:40London Heathrow
₹ 59,237
China Eastern
11 Mar
LHR21:00London Heathrow
30h 40m
2 stops
SIN11:40Singapore Changi
16 Mar
SIN14:00Singapore Changi
59h 30m
2 stops
LHR17:30London Heathrow
₹ 59,329
China Eastern
18 Apr
LHR21:20London Heathrow
25h 05m
1 stop
SIN05:25Singapore Changi
14 May
SIN00:55Singapore Changi
24h 45m
1 stop
LHR18:40London Heathrow
₹ 59,421

Shenzhen Airlines flights from London to Southeast Asia

Our best Shenzhen Airlines deals on London to Southeast Asia flight tickets
Shenzhen Airlines
11 Mar
LHR21:10London Heathrow
36h 20m
1 stop
SIN17:30Singapore Changi
15 Mar
SIN18:30Singapore Changi
32h 40m
1 stop
LHR19:10London Heathrow
₹ 60,523
Shenzhen Airlines
11 Mar
LHR21:10London Heathrow
31h 00m
1 stop
SIN12:10Singapore Changi
15 Mar
SIN18:30Singapore Changi
32h 40m
1 stop
LHR19:10London Heathrow
₹ 61,349
Shenzhen Airlines
11 Mar
LHR21:10London Heathrow
36h 20m
1 stop
SIN17:30Singapore Changi
15 Mar
SIN18:30Singapore Changi
32h 40m
1 stop
LHR19:10London Heathrow
₹ 61,441

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 29 January 2026.
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

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Fri 6/3

21:05-14:25

1 stop35h 50m

Port Blair

Sun 15/3

09:25-19:30

1 stop15h 35m

₹ 58,502

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Fri 6/3

13:30-14:25

2 stops19h 25m

Port Blair

Sun 15/3

09:25-19:30

1 stop15h 35m

₹ 58,686

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Fri 29/5

22:20-14:25

1 stop35h 35m

Port Blair

Tue 2/6

11:30-11:30

1 stop28h 30m

₹ 58,962

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Fri 29/5

22:20-14:25

1 stop35h 35m

Port Blair

Tue 2/6

11:30-10:15

2 stops27h 15m

₹ 59,145

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 7/4

21:20-05:25

1 stop25h 05m

Singapore Changi

Sun 10/5

23:10-18:40

1 stop26h 30m

₹ 59,237

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Fri 29/5

12:30-14:25

2 stops21h 25m

Port Blair

Tue 2/6

11:30-10:15

2 stops27h 15m

₹ 59,237

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 11/3

21:00-11:40

2 stops30h 40m

Singapore Changi

Mon 16/3

14:00-17:30

2 stops59h 30m

₹ 59,329

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 15/4

17:50-16:35

1 stop15h 45m

Singapore Changi

Mon 25/5

23:40-08:40

1 stop16h 00m

₹ 60,339

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 11/3

21:10-17:30

1 stop36h 20m

Singapore Changi

Sun 15/3

18:30-19:10

1 stop32h 40m

₹ 60,523

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 11/3

21:10-12:10

1 stop31h 00m

Singapore Changi

Sun 15/3

18:30-19:10

1 stop32h 40m

₹ 61,349

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 ₹ 48,308. 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 ₹ 66,676.

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 ₹ 88,830. The most expensive day to fly to Southeast Asia is Friday, with ticket prices averaging around ₹ 162,685.

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 ₹ 113,180. 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 morning when prices are ₹ 127,278 on average. Flights to Southeast Asia from London in the morning 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 ₹ 86,032 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 ₹ 80,360 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

295 airports
The fastest flight from London to Southeast Asia takes 13h 00m
Direct flights go from London to Southeast Asia every day.
There are 295 airports in Southeast Asia. From London there are direct flights to 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?

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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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
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Flights to Londonfrom ₹ 41,512
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Flights to Vasco da Gamafrom ₹ 4,500