How long is the flight from London to Southeast Asia?

For as low as S$ 848, Gulf Air can have you in Southeast Asia from London in 14h 50m. The distance between London and Southeast Asia is about 10839 km. This flight may include one or multiple stops. Find deals

What are the cheapest airlines to fly from London to Southeast Asia one-way?

The cheapet airlines for a one-way flight from London to Southeast Asia are Hainan Airlines (S$ 528), China Eastern (S$ 528), and Air China (S$ 528). Find deals

In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

What are the most popular routes from London to Southeast Asia?

The most popular flight routes from London to Southeast Asia are London Heathrow - Singapore Changi, London Gatwick - Singapore Changi and London City - Singapore Changi.

What are the cheapest flights from London to Southeast Asia?

While on average a flight from London to Southeast Asia is generally S$ 663, our data shows the cheapest flight currently is S$ 609. When looking at the most popular route, (London Heathrow - Singapore Changi), you can expect to pay S$ 673 for that flight.

What are the most reliable airlines from London to Southeast Asia?

Consider EVA Air (80%), Thai Airways (78%) or Air Canada (71%) when booking your flight. These represent the most reliable airlines when flying from London to Southeast Asia.

How far in advance should I book a flight from London to Southeast Asia?

Travellers have found it’s best to book a flight 57 days in advance to save up to 50% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Southeast Asia 1-2 weeks in advance for as low as S$ 993, or S$ 1,199 for flights within the next 24 hours.

What is the cheapest month to fly from London to Southeast Asia?

May can be a great time to fly to Southeast Asia from London with a flight ticket averaging about S$ 1,108. Cheapflights users have found deals in the month of May for as cheap as S$ 487. The most expensive prices can be found in the month of December.

Can I find deals for flights from London to Southeast Asia that include hotel bookings?

Yes. In addition to deals on London to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Southeast Asia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Southeast Asia.

Can I find deals for business class flights from London to Southeast Asia?

Yes. Cheapflights offers flight deals from London to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

S$ 528+ Cheap Flights from London to Southeast Asia

Cheap flight deals from London to Southeast Asia

Round-trip from	S$ 824
One-way from	S$ 528
Popular in	December
Cheapest in	May
Average price	S$ 1,301

Lufthansa
12-11-2-12
2 total stops
32h 05m total
London to Southeast Asia

Search Deals

22-9
2 total stops
24h 50m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (S$ 129 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (S$ 50 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from London to Southeast Asia

Cheapest flights from London to Southeast Asia
Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.

Wed 12-1118:10LCY - SIN

1 stop14h 45mLufthansa

Tue 2-1223:55SIN - LCY

1 stop17h 20mLufthansa

Deal found 18-8S$ 824

Mon 1-1215:30LHR - SIN

1 stop17h 25mMultiple Airlines

Sun 14-1200:05SIN - LHR

1 stop19h 10mMultiple Airlines

Deal found 18-8S$ 824

Tue 2-911:35LGW - SIN

1 stop25h 35mChina Eastern

Sat 13-923:10SIN - LGW

1 stop23h 50mChina Eastern

Deal found 19-8S$ 824

Tue 11-1118:15LCY - SIN

1 stop14h 40mLufthansa

Tue 2-1223:55SIN - LCY

1 stop17h 20mLufthansa

Deal found 19-8S$ 826

Wed 10-922:05LHR - SIN

1 stop21h 25mShenzhen Airlines

Sat 13-903:30SIN - LHR

1 stop23h 30mShenzhen Airlines

Deal found 19-8S$ 826

Wed 10-911:35LGW - SIN

2 stops30h 55mChina Eastern

Thu 18-918:10SIN - LGW

1 stop28h 00mChina Eastern

Deal found 18-8S$ 826

Mon 6-1009:00LGW - SIN

2 stops25h 20mMultiple Airlines

Mon 20-1003:00SIN - LGW

1 stop22h 50mMultiple Airlines

Deal found 18-8S$ 827

Sun 21-922:05LHR - SIN

1 stop31h 15mGulf Air

Sat 4-1020:00SIN - LHR

1 stop17h 55mGulf Air

Deal found 18-8S$ 828

Fri 19-911:35LGW - SIN

1 stop25h 35mChina Eastern

Thu 2-1000:55SIN - LGW

1 stop21h 15mChina Eastern

Deal found 19-8S$ 828

Mon 8-921:20LHR - SIN

1 stop25h 05mChina Eastern

Thu 11-900:55SIN - LHR

1 stop24h 45mChina Eastern

Deal found 18-8S$ 830

Mon 13-1008:05LGW - SIN

1 stop37h 45mMultiple Airlines

Mon 27-1006:40SIN - LGW

1 stop19h 50mMultiple Airlines

Deal found 18-8S$ 830

Fri 14-1118:15LCY - SIN

1 stop14h 40mMultiple Airlines

Mon 24-1100:05SIN - LCY

1 stop16h 30mMultiple Airlines

Deal found 18-8S$ 831

Best flights from London to Southeast Asia
Discover carefully curated flight deals from London to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 August 2025.

Wed 14-110:35LGW - SIN

1 stop17h 55mGulf Air

Tue 3-320:25SIN - LGW

1 stop18h 05mGulf Air

Deal found 19-8S$ 824

Tue 9-917:50LHR - SIN

1 stop15h 50mMultiple Airlines

Tue 10-300:05SIN - LHR

1 stop16h 00mMultiple Airlines

Deal found 18-8S$ 840

Tue 9-917:50LHR - SIN

1 stop15h 50mLufthansa

Wed 11-323:55SIN - LHR

1 stop18h 50mLufthansa

Deal found 18-8S$ 842

Sat 30-820:45LGW - SIN

1 stop36h 15mAir China

Sat 6-917:30SIN - LGW

1 stop20h 25mAir China

Deal found 19-8S$ 846

Tue 4-1119:10LCY - SIN

1 stop14h 50mSWISS

Thu 13-1100:05SIN - LCY

1 stop16h 40mSWISS

Deal found 19-8S$ 848

Tue 9-910:55LGW - SIN

1 stop24h 00mTurkish Airlines

Tue 16-910:15SIN - LGW

1 stop19h 05mTurkish Airlines

Deal found 19-8S$ 873

Mon 26-113:55LHR - SIN

1 stop35h 40mEtihad Airways

Mon 2-319:25SIN - LHR

1 stop19h 15mEtihad Airways

Deal found 19-8S$ 886

Mon 13-1020:50LHR - BKK

1 stop28h 05mOman Air

Mon 3-1120:05BKK - LHR

1 stop29h 20mOman Air

Deal found 19-8S$ 886

Fri 7-1121:10LHR - BKK

1 stop38h 20mShenzhen Airlines

Fri 21-1112:10BKK - LHR

1 stop38h 00mShenzhen Airlines

Deal found 18-8S$ 887

Mon 1-910:00LHR - BKK

1 stop21h 45mSAUDIA

Thu 2-1015:25BKK - LHR

1 stop22h 05mSAUDIA

Deal found 19-8S$ 900

Wed 12-1110:35LGW - SIN

1 stop17h 55mGulf Air

Thu 4-1220:25SIN - LGW

1 stop17h 55mGulf Air

Deal found 19-8S$ 835

Wed 24-909:25LCY - SIN

1 stop24h 40mSWISS

Tue 14-1023:20SIN - LCY

1 stop16h 30mSWISS

Deal found 18-8S$ 849

Direct flights from London to Southeast Asia
Explore direct flight options from London to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 August 2025.

Thu 27-1109:10LHR - SIN

Nonstop12h 50mSingapore Airlines

Sat 27-1209:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 19-8S$ 931

Thu 27-1120:35LHR - SIN

Nonstop13h 05mSingapore Airlines

Thu 25-1201:10SIN - LHR

Nonstop14h 30mSingapore Airlines

Deal found 18-8S$ 946

Thu 6-1120:35LHR - SIN

Nonstop13h 05mSingapore Airlines

Tue 11-1112:45SIN - LHR

Nonstop14h 25mSingapore Airlines

Deal found 17-8S$ 961

Wed 19-1121:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Mon 24-1112:45SIN - LHR

Nonstop14h 25mSingapore Airlines

Deal found 19-8S$ 963

Wed 12-1110:40LHR - SIN

Nonstop13h 10mSingapore Airlines

Tue 2-1209:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 19-8S$ 964

Tue 10-221:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Tue 10-309:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 19-8S$ 966

Thu 5-209:20LGW - SIN

Nonstop12h 55mSingapore Airlines

Mon 9-323:55SIN - LGW

Nonstop14h 30mSingapore Airlines

Deal found 19-8S$ 977

Tue 10-209:20LGW - SIN

Nonstop12h 55mSingapore Airlines

Tue 10-323:55SIN - LGW

Nonstop14h 30mSingapore Airlines

Deal found 17-8S$ 978

Wed 14-109:10LHR - SIN

Nonstop12h 50mSingapore Airlines

Wed 4-309:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 19-8S$ 982

Tue 10-210:40LHR - SIN

Nonstop13h 10mSingapore Airlines

Tue 17-223:25SIN - LHR

Nonstop14h 30mSingapore Airlines

Deal found 18-8S$ 989

Tue 10-209:10LHR - SIN

Nonstop12h 50mSingapore Airlines

Wed 11-309:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 19-8S$ 998

Tue 14-1011:25LHR - SIN

Nonstop13h 05mSingapore Airlines

Tue 21-1009:00SIN - LHR

Nonstop13h 45mSingapore Airlines

Deal found 17-8S$ 1,000

Last-minute flights from London to Southeast Asia
Discover last-minute flight deals from London to Southeast Asia. Data last updated 20 August 2025 and is based on user searches.

Sun 24-806:30LHR - BKK

1 stop21h 00mKLM

Mon 10-1112:15BKK - LHR

1 stop26h 25mKLM

Deal found 17-8S$ 876

Sun 24-806:30LHR - BKK

1 stop21h 00mMultiple Airlines

Sun 14-911:35BKK - LHR

1 stop15h 50mMultiple Airlines

Deal found 19-8S$ 877

Mon 25-813:15LHR - SIN

1 stop23h 15mAir India

Wed 10-908:45SIN - LHR

1 stop17h 15mAir India

Deal found 18-8S$ 874

Tue 26-821:20LHR - SIN

1 stop25h 05mChina Eastern

Sun 7-900:55SIN - LHR

1 stop24h 45mChina Eastern

Deal found 18-8S$ 841

Tue 26-822:00LHR - SIN

1 stop34h 00mAir China

Tue 9-909:00SIN - LHR

1 stop18h 30mAir China

Deal found 18-8S$ 842

Wed 27-821:20LHR - SIN

1 stop36h 35mChina Eastern

Sun 7-910:10SIN - LHR

1 stop39h 30mChina Eastern

Deal found 18-8S$ 840

Wed 27-820:25LHR - SIN

1 stop18h 30mAir China

Mon 8-909:00SIN - LHR

1 stop18h 30mAir China

Deal found 18-8S$ 866

Thu 28-821:20LHR - SIN

1 stop36h 35mChina Eastern

Mon 8-914:20SIN - LHR

2 stops59h 20mChina Eastern

Deal found 18-8S$ 848

Thu 28-822:00LHR - SIN

1 stop34h 00mMultiple Airlines

Thu 4-912:05SIN - LHR

2 stops38h 25mMultiple Airlines

Deal found 17-8S$ 857

Fri 29-809:45LHR - SIN

1 stop29h 00mAir India

Fri 12-923:00SIN - LHR

1 stop27h 00mAir India

Deal found 19-8S$ 839

Fri 29-818:40LHR - BKK

1 stop33h 05mSWISS

Mon 13-1012:35BKK - LHR

1 stop25h 20mSWISS

Deal found 19-8S$ 855

Sat 30-820:45LGW - SIN

1 stop36h 15mAir China

Sat 6-917:30SIN - LGW

1 stop20h 25mAir China

Deal found 19-8S$ 846

One-way flights from London to Southeast Asia
Search for one-way flight options from London to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 20 August 2025.

Mon 22-909:30LTN - SIN

2 stops24h 50mMultiple Airlines

Deal found 18-8S$ 528

Wed 3-922:05LHR - SIN

2 stops41h 35mMultiple Airlines

Deal found 18-8S$ 528

Tue 4-1110:30LGW - SIN

1 stop20h 30mChina Eastern

Deal found 18-8S$ 528

Mon 1-906:25STN - SIN

3 stops27h 55mMultiple Airlines

Deal found 17-8S$ 529

Mon 1-906:35LTN - SIN

3 stops27h 45mMultiple Airlines

Deal found 18-8S$ 529

Mon 3-1121:00LHR - SIN

2 stops30h 10mHainan Airlines

Deal found 18-8S$ 529

Tue 16-916:30LGW - SIN

3 stops24h 35mMultiple Airlines

Deal found 19-8S$ 529

Mon 15-915:30STN - SIN

3 stops25h 35mMultiple Airlines

Deal found 18-8S$ 530

Tue 14-1007:10LTN - SIN

2 stops43h 30mMultiple Airlines

Deal found 18-8S$ 530

Thu 2-1005:45LGW - SIN

1 stop37h 25mMultiple Airlines

Deal found 18-8S$ 530

Tue 26-808:15STN - SIN

1 stop34h 55mMultiple Airlines

Deal found 19-8S$ 532

Thu 11-921:45LHR - SIN

1 stop26h 30mAir India

Deal found 18-8S$ 532

Cheapflights Fare Finder

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

LGW - SIN

LGWSIN

London Gatwick

Wed 14-1

10:35-12:30

1 stop17h 55m

Singapore Changi

Tue 3-3

20:25-06:30

1 stop18h 05m

S$ 824

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Wed 12-11

10:35-12:30

1 stop17h 55m

Singapore Changi

Thu 4-12

20:25-06:20

1 stop17h 55m

S$ 835

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sun 14-9

11:25-12:20

1 stop17h 55m

Singapore Changi

Tue 23-9

20:00-06:55

1 stop17h 55m

S$ 835

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sun 14-9

11:25-12:20

1 stop17h 55m

Singapore Changi

Tue 30-9

20:00-06:55

1 stop17h 55m

S$ 835

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 9-9

17:50-16:40

1 stop15h 50m

Singapore Changi

Tue 10-3

00:05-08:05

1 stop16h 00m

S$ 840

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 9-9

17:50-16:40

1 stop15h 50m

Singapore Changi

Wed 11-3

23:55-10:45

1 stop18h 50m

S$ 842

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sun 2-11

10:35-12:30

1 stop17h 55m

Singapore Changi

Thu 13-11

20:25-06:20

1 stop17h 55m

S$ 845

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sat 30-8

20:45-16:00

1 stop36h 15m

Singapore Changi

Sat 6-9

17:30-06:55

1 stop20h 25m

S$ 846

LondonSingapore

LCY - SIN

LCYSIN

London City

Tue 4-11

19:10-18:00

1 stop14h 50m

Singapore Changi

Thu 13-11

00:05-08:45

1 stop16h 40m

S$ 848

LondonSingapore

LCY - SIN

LCYSIN

London City

Wed 24-9

09:25-17:05

1 stop24h 40m

Singapore Changi

Tue 14-10

23:20-08:50

1 stop16h 30m

S$ 849

Flights are sorted by cheapest return flights first.

Deals found on 19-8

Showing 1-10 of 60 results

...

Best time to book a flight from London to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from London with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Southeast Asia

What is the cheapest month to book a flight from London to Southeast Asia?

Currently, January is the cheapest month in which you can book a flight from London to Southeast Asia (average of S$ 134). Flying from London to Southeast Asia in December is currently the most expensive (average of S$ 238). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to YJX?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Southeast Asia as you normally would.

Weekly flight availability from London to Southeast Asia

The most flights from LON to zzYJX are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Southeast Asia

Read reviews from past customers who have flown with Singapore Airlines, SAUDIA, andGulf Air from London to Southeast Asia. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.1

Very Good

1,347 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

Singapore Airlines

8.1

Very Good

1,347 reviews

Singapore Airlines

8.1

Very Good

1,347 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

SAUDIA

7.4

Good

626 reviews

Singapore Airlines

8.1

Very Good

1,347 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Gulf Air

7.1

Good

207 reviews

Singapore Airlines

8.1

Very Good

1,347 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Lufthansa

6.8

Okay

7,337 reviews

Singapore Airlines

8.1

Very Good

1,347 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

British Airways

6.7

Okay

7,289 reviews

Singapore Airlines

8.1

Very Good

1,347 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Related info for your journey

How long is the flight from London to Southeast Asia?
For as low as S$ 848, Gulf Air can have you in Southeast Asia from London in 14h 50m. The distance between London and Southeast Asia is about 10839 km. This flight may include one or multiple stops.
What are the cheapest airlines to fly from London to Southeast Asia one-way?
The cheapet airlines for a one-way flight from London to Southeast Asia are Hainan Airlines (S$ 528), China Eastern (S$ 528), and Air China (S$ 528).
What are the most popular routes from London to Southeast Asia?
The most popular flight routes from London to Southeast Asia are London Heathrow - Singapore Changi, London Gatwick - Singapore Changi and London City - Singapore Changi.
What are the most reliable airlines from London to Southeast Asia?
Consider EVA Air (80%), Thai Airways (78%) or Air Canada (71%) when booking your flight. These represent the most reliable airlines when flying from London to Southeast Asia.
What are the cheapest flights from London to Southeast Asia?
While on average a flight from London to Southeast Asia is generally S$ 663, our data shows the cheapest flight currently is S$ 609. When looking at the most popular route, (London Heathrow - Singapore Changi), you can expect to pay S$ 673 for that flight.
Can I find deals for flights from London to Southeast Asia that include hotel bookings?
Yes. In addition to deals on London to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Southeast Asia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Southeast Asia.
Can I find deals for business class flights from London to Southeast Asia?
Yes. Cheapflights offers flight deals from London to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Southeast Asia?
Currently, January is the cheapest month in which you can book a flight from London to Southeast Asia (average of S$ 134). Flying from London to Southeast Asia in December is currently the most expensive (average of S$ 238). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for London to Southeast Asia

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Direct flights to

Top 6 airlines flying from London to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	CheapestS$ 789	AverageS$ 993	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Gulf Air	CheapestS$ 845	AverageS$ 1,008	FlexibilityNo cancel fee	On-time67%	Search Gulf Air flights
British Airways	CheapestS$ 850	AverageS$ 1,130	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Singapore Airlines	CheapestS$ 937	AverageS$ 1,298	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
SWISS	CheapestS$ 946	AverageS$ 1,322	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
Lufthansa	CheapestS$ 1,022	AverageS$ 1,776	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Southeast Asia?

When you search for this flight from London to Southeast Asia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Southeast Asia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to Southeast Asia.

Can Cheapflights find flights from London to Southeast Asia with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Southeast Asia flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to Southeast Asia become cheaper?

Yes! Start tracking prices for London to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from London to Southeast Asia from S$ 528

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14-10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Southeast Asia

Keep the following information in mind while searching for London to Southeast Asia flight deals. Data was last updated 20 August 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from London to Southeast Asia

Cheapest flights from London to Southeast AsiaExplore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.

Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Best time to book a flight from London to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Southeast Asia

What is the cheapest month to book a flight from London to Southeast Asia?

What is the cheapest time of day to fly from LON to YJX?

Find hourly flight availability from London to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 August 2025.

Weekly flight availability from London to Southeast Asia

Reviews of airlines servicing Southeast Asia

Read reviews from past customers who have flown with Singapore Airlines, SAUDIA, andGulf Air from London to Southeast Asia. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from London to Southeast Asia?

What are the cheapest airlines to fly from London to Southeast Asia one-way?

What are the most popular routes from London to Southeast Asia?

What are the most reliable airlines from London to Southeast Asia?

What are the cheapest flights from London to Southeast Asia?

Can I find deals for flights from London to Southeast Asia that include hotel bookings?

How can I find direct flights from London to Southeast Asia?

Can I find deals for business class flights from London to Southeast Asia?

What is the cheapest month to book a flight from London to Southeast Asia?

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Alternative routes for London to Southeast Asia

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Top 6 airlines flying from London to Southeast Asia

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Cheapest flights from London to Southeast Asia
Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.