What is the cheapest airline that flies from United Kingdom to Southeast Asia?

Singapore Airlines, China Eastern, and Air India are the most popular carriers operating from United Kingdom to Southeast Asia

How many flights depart from United Kingdom to Southeast Asia on average per week?

The number of flights available between United Kingdom and Southeast Asia is 179 per week as of February 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

How many flights depart from United Kingdom to Southeast Asia on average per day?

As of February 2026, there are 25 flights per day flying from United Kingdom to Southeast Asia. The most common time of day flights depart is 21:00, with 55% of flights taking off in the evening.

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.

₹ 35,653 Cheap Flights from the United Kingdom to Southeast Asia in 2026

1 adult

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Find the cheapest flights from the United Kingdom to Southeast Asia

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One-way

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Recent return flight deals from the United Kingdom to Southeast Asia

Enter your travel dates to find the best prices.

13:50 - 18:30

LHR

SIN

21h 40m

1 stop

19:40 - 10:15

SIN

LHR

21h 35m

1 stop

₹ 61,690Air India

Thu, 18 Jun - Sat, 4 Jul

14:00 - 21:45

LHR

SIN

24h 45m

1 stop

08:55 - 19:00

SIN

LHR

17h 05m

1 stop

₹ 61,780Air India

Thu, 18 Jun - Sat, 4 Jul

17:50 - 16:35

LHR

SIN

15h 45m

1 stop

22:45 - 08:15

SIN

LHR

16h 30m

1 stop

₹ 62,688Lufthansa

Mon, 20 Apr - Tue, 5 May

20:05 - 11:55

LHR

SIN

31h 50m

2 stops

21:15 - 19:10

SIN

LHR

52h 55m

2 stops

₹ 62,960Oman Air

Fri, 20 Mar - Mon, 6 Apr

21:05 - 07:45

LHR

SIN

27h 40m

1 stop

19:40 - 10:15

SIN

LHR

21h 35m

1 stop

₹ 63,051Air India

Mon, 29 Jun - Sat, 11 Jul

21:00 - 04:25

LHR

SIN

23h 25m

1 stop

02:40 - 17:30

SIN

LHR

46h 50m

3 stops

₹ 63,232China Eastern

Fri, 6 Mar - Sun, 15 Mar

21:00 - 01:30

LHR

SIN

44h 30m

3 stops

00:25 - 17:30

SIN

LHR

25h 05m

1 stop

₹ 63,413China Eastern

Mon, 9 Mar - Thu, 19 Mar

21:00 - 01:40

LHR

SIN

44h 40m

2 stops

23:00 - 17:30

SIN

LHR

26h 30m

1 stop

₹ 63,504China Eastern

Fri, 6 Mar - Sun, 22 Mar

21:00 - 11:40

LHR

SIN

54h 40m

3 stops

02:40 - 17:30

SIN

LHR

22h 50m

2 stops

₹ 64,048China Eastern

Mon, 9 Mar - Thu, 19 Mar

22:05 - 02:00

LHR

SIN

20h 55m

1 stop

03:00 - 19:50

SIN

LHR

23h 50m

1 stop

₹ 64,139Shenzhen Airlines

Fri, 17 Apr - Sun, 26 Apr

Oman Air flights from United Kingdom to Southeast Asia

Our best Oman Air deals on United Kingdom to Southeast Asia flight tickets

Oman Air

20 Mar

LHR20:05London Heathrow

31h 50m

2 stops

SIN11:55Singapore Changi

6 Apr

SIN21:15Singapore Changi

52h 55m

2 stops

LHR19:10London Heathrow

₹ 62,960

Oman Air

7 Mar

LHR08:25London Heathrow

19h 30m

2 stops

SIN11:55Singapore Changi

12 Mar

SIN06:00Singapore Changi

31h 55m

2 stops

LHR05:55London Heathrow

₹ 72,032

Oman Air

28 Feb

LHR08:25London Heathrow

40h 40m

2 stops

SIN09:05Singapore Changi

29 Mar

SIN15:35Singapore Changi

21h 55m

2 stops

LHR06:30London Heathrow

₹ 72,123

Gulf Air flights from United Kingdom to Southeast Asia

Our best Gulf Air deals on United Kingdom to Southeast Asia flight tickets

Gulf Air

17 Mar

LHR09:30London Heathrow

19h 20m

1 stop

SIN12:50Singapore Changi

1 Apr

SIN20:00Singapore Changi

17h 55m

1 stop

LHR06:55London Heathrow

₹ 65,954

Gulf Air

1 Mar

LHR09:30London Heathrow

19h 20m

1 stop

SIN12:50Singapore Changi

15 Mar

SIN20:00Singapore Changi

18h 35m

1 stop

LHR06:35London Heathrow

₹ 66,135

Gulf Air

5 Mar

LHR21:50London Heathrow

31h 00m

1 stop

SIN12:50Singapore Changi

1 Apr

SIN20:00Singapore Changi

17h 55m

1 stop

LHR06:55London Heathrow

₹ 66,316

momondo Fare Finder

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

Thu 18/6

13:50-18:30

1 stop21h 40m

Singapore Changi

Sat 4/7

19:40-10:15

1 stop21h 35m

₹ 61,690

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 18/6

14:00-21:45

1 stop24h 45m

Singapore Changi

Sat 4/7

08:55-19:00

1 stop17h 05m

₹ 61,780

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 20/4

17:50-16:35

1 stop15h 45m

Singapore Changi

Tue 5/5

22:45-08:15

1 stop16h 30m

₹ 62,688

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 20/3

20:05-11:55

2 stops31h 50m

Singapore Changi

Mon 6/4

21:15-19:10

2 stops52h 55m

₹ 62,960

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 29/6

21:05-07:45

1 stop27h 40m

Singapore Changi

Sat 11/7

19:40-10:15

1 stop21h 35m

₹ 63,051

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 6/3

21:00-04:25

1 stop23h 25m

Singapore Changi

Sun 15/3

02:40-17:30

3 stops46h 50m

₹ 63,232

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 9/3

21:00-01:30

3 stops44h 30m

Singapore Changi

Thu 19/3

00:25-17:30

1 stop25h 05m

₹ 63,413

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 6/3

21:00-01:40

2 stops44h 40m

Singapore Changi

Sun 22/3

23:00-17:30

1 stop26h 30m

₹ 63,504

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 9/3

21:00-11:40

3 stops54h 40m

Singapore Changi

Thu 19/3

02:40-17:30

2 stops22h 50m

₹ 64,048

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 17/4

22:05-02:00

1 stop20h 55m

Singapore Changi

Sun 26/4

03:00-19:50

1 stop23h 50m

₹ 64,139

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 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

Prices

Airlines

Other information

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 ₹ 46,812. 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 ₹ 65,863.

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 ₹ 87,746. The most expensive day to fly to Southeast Asia is Friday, with ticket prices averaging around ₹ 160,701.

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 United Kingdom to Southeast Asia in the evening for as low as ₹ 111,800. 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 ₹ 125,726 on average. Flights to Southeast Asia from United Kingdom in the morning 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 ₹ 85,141 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 ₹ 80,106 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

Fastest flight time	13h 10m
Direct flights	Every day
Airports in Southeast Asia	295 airports

The fastest flight from United Kingdom to Southeast Asia takes 13h 10m

Direct flights go from United Kingdom to Southeast Asia every day.

There are 295 airports in Southeast Asia. From United Kingdom there are direct flights to Singapore Changi (SIN).

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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from United Kingdom to Southeast Asia is Airbus A350-1000 (18.04% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (17.92%), Boeing 777-300ER (9.36%), and Boeing 777 (8.93%).

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.