What is the cheapest airline that flies from London Heathrow to Southeast Asia?

China Eastern is the most popular carrier operating from London Heathrow to Southeast Asia

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.

₹ 36,342 Cheap Flights from London Heathrow Airport to Southeast Asia in 2026

Q: How many flights depart from London Heathrow Airport to Southeast Asia on average per day?

33 flights are operational daily from London Heathrow Airport to Southeast Asia as of March 2026. The most popular departure time for this route is 21:00, with 65% of flights per day taking off in the evening.

Q: How many flights depart from London Heathrow Airport to Southeast Asia on average per week?

As of March 2026, 233 flights take off from London Heathrow Airport and land in Southeast Asia each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

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Find the cheapest flights from London Heathrow Airport to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

21:05 - 07:45

LHR

SIN

27h 40m

1 stop

08:55 - 19:00

SIN

LHR

17h 05m

1 stop

₹ 62,039Air India

Thu, 18 Jun - Sat, 4 Jul

13:15 - 21:45

LHR

SIN

25h 30m

1 stop

19:40 - 10:15

SIN

LHR

21h 35m

1 stop

₹ 63,048Air India

Sun, 28 Jun - Tue, 14 Jul

14:45 - 15:40

LHR

SIN

17h 55m

1 stop

22:20 - 16:35

SIN

LHR

25h 15m

1 stop

₹ 63,966Multiple Airlines

Sat, 30 May - Wed, 22 Jul

22:00 - 03:10

LHR

SIN

22h 10m

2 stops

20:00 - 06:55

SIN

LHR

17h 55m

1 stop

₹ 64,425Multiple Airlines

Mon, 20 Apr - Thu, 23 Apr

21:20 - 15:45

LHR

SIN

35h 25m

1 stop

00:55 - 18:40

SIN

LHR

24h 45m

1 stop

₹ 64,516China Eastern

Tue, 21 Apr - Fri, 8 May

21:20 - 15:45

LHR

SIN

35h 25m

1 stop

23:10 - 18:40

SIN

LHR

26h 30m

1 stop

₹ 64,608China Eastern

Tue, 5 May - Sun, 17 May

10:20 - 18:30

LHR

SIN

25h 10m

1 stop

21:35 - 17:05

SIN

LHR

26h 30m

1 stop

₹ 64,700Finnair

Mon, 31 Aug - Mon, 14 Sep

22:05 - 12:45

LHR

SIN

31h 40m

1 stop

20:00 - 06:55

SIN

LHR

17h 55m

1 stop

₹ 64,792Gulf Air

Mon, 20 Apr - Thu, 23 Apr

21:20 - 05:25

LHR

SIN

25h 05m

1 stop

00:55 - 18:40

SIN

LHR

24h 45m

1 stop

₹ 64,884China Eastern

Tue, 21 Apr - Fri, 8 May

21:20 - 01:30

LHR

SIN

45h 10m

3 stops

16:35 - 18:40

SIN

LHR

33h 05m

1 stop

₹ 65,067China Eastern

Tue, 26 May - Wed, 3 Jun

Air India flights from London Heathrow Airport to Southeast Asia

Our best Air India deals on London Heathrow Airport to Southeast Asia flight tickets

Air India

11 Jun

LHR21:05London Heathrow

27h 40m

1 stop

SIN07:45Singapore Changi

18 Jun

SIN19:40Singapore Changi

21h 35m

1 stop

LHR10:15London Heathrow

₹ 62,039

Air India

28 Jun

LHR13:15London Heathrow

25h 30m

1 stop

SIN21:45Singapore Changi

14 Jul

SIN19:40Singapore Changi

21h 35m

1 stop

LHR10:15London Heathrow

₹ 63,048

Air India

18 Jun

LHR13:50London Heathrow

21h 40m

1 stop

SIN18:30Singapore Changi

4 Jul

SIN08:55Singapore Changi

17h 05m

1 stop

LHR19:00London Heathrow

₹ 65,159

Shenzhen Airlines flights from London Heathrow Airport to Southeast Asia

Our best Shenzhen Airlines deals on London Heathrow Airport to Southeast Asia flight tickets

Shenzhen Airlines

15 Mar

LHR21:10London Heathrow

20h 50m

1 stop

SIN02:00Singapore Changi

22 Mar

SIN18:40Singapore Changi

32h 30m

1 stop

LHR19:10London Heathrow

₹ 62,865

Shenzhen Airlines

24 Apr

LHR22:05London Heathrow

20h 55m

1 stop

SIN02:00Singapore Changi

1 May

SIN18:10Singapore Changi

32h 40m

1 stop

LHR19:50London Heathrow

₹ 64,425

Shenzhen Airlines

16 Mar

LHR21:10London Heathrow

20h 50m

1 stop

SIN02:00Singapore Changi

21 Mar

SIN18:40Singapore Changi

32h 30m

1 stop

LHR19:10London Heathrow

₹ 64,700

momondo Fare Finder

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

Cheapest return flight

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 18/6

21:05-07:45

1 stop27h 40m

Singapore Changi

Sat 4/7

08:55-19:00

1 stop17h 05m

₹ 62,039

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 28/6

13:15-21:45

1 stop25h 30m

Singapore Changi

Tue 14/7

19:40-10:15

1 stop21h 35m

₹ 63,048

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 30/5

14:45-15:40

1 stop17h 55m

Singapore Changi

Wed 22/7

22:20-16:35

1 stop25h 15m

₹ 63,966

Fastest return journey

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 20/4

22:00-03:10

2 stops22h 10m

Singapore Changi

Thu 23/4

20:00-06:55

1 stop17h 55m

₹ 64,425

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 21/4

21:20-15:45

1 stop35h 25m

Singapore Changi

Fri 8/5

00:55-18:40

1 stop24h 45m

₹ 64,516

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 5/5

21:20-15:45

1 stop35h 25m

Singapore Changi

Sun 17/5

23:10-18:40

1 stop26h 30m

₹ 64,608

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 31/8

10:20-18:30

1 stop25h 10m

Singapore Changi

Mon 14/9

21:35-17:05

1 stop26h 30m

₹ 64,700

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 20/4

22:05-12:45

1 stop31h 40m

Singapore Changi

Thu 23/4

20:00-06:55

1 stop17h 55m

₹ 64,792

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 21/4

21:20-05:25

1 stop25h 05m

Singapore Changi

Fri 8/5

00:55-18:40

1 stop24h 45m

₹ 64,884

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 26/5

21:20-01:30

3 stops45h 10m

Singapore Changi

Wed 3/6

16:35-18:40

1 stop33h 05m

₹ 65,067

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Southeast Asia?

In general, May 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 ₹ 74,244. If you aren’t able to travel during the month of May, then book flights to Southeast Asia from London Heathrow Airport during September instead. Flights to Southeast Asia in September, while not as cheap as those in May, still average around ₹ 74,428.

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 ₹ 88,765. The most expensive day to fly to Southeast Asia is Friday, with ticket prices averaging around ₹ 129,641.

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 Heathrow Airport to Southeast Asia in the evening for as low as ₹ 117,663. 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 ₹ 127,185 on average. Flights to Southeast Asia from London Heathrow Airport in the morning 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 ₹ 86,213 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 ₹ 81,127 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 05m
Direct flights	Every day
Airports in Southeast Asia	295 airports

The fastest flight from London Heathrow Airport to Southeast Asia takes 13h 05m

Direct flights go from London Heathrow Airport to Southeast Asia every day.

There are 295 airports in Southeast Asia. From London Heathrow Airport there are direct flights to 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Southeast Asia is Boeing 787-9 Dreamliner (19.97% of total bookings). The next most popular plane models are Airbus A350-1000 (19.40%), Boeing 777-300ER (10.68%), and Boeing 777 (9.47%).

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.