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 SWISS ($837), Emirates ($912), and KLM ($1,209). 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. Find deals

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?

While some choose either London Stansted - Denpasar Bali Ngurah Rai or London City - Phuket City, London City - Denpasar Bali Ngurah Rai is the most popular route from London to Southeast Asia.

What are the cheapest flights from London to Southeast Asia?

On average you can expect to pay $2,068 for a flight from London to Southeast Asia. The cheapest flight overall is $1,110 while the most popular route, (London City - Denpasar Bali Ngurah Rai) is currently priced at $934.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Southeast Asia on time: Thai Airways (71%), EVA Air (70%), Air Canada (67%).

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 49% 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 $1,180, or $1,421 for flights within the next 24 hours.

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

The best pricing can be found in the month of May. Prices to Southeast Asia from London average $1,318. You can even find prices in May for less than $1,318, as users have found deals to Southeast Asia from as low as $580. The month of December appears to be one of the more expensive times to travel to Southeast Asia from London. Flying in the targeted month can save you up to 37%.

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.

$657+ Flights from London to Southeast Asia

Cheap flight deals from London to Southeast Asia

Round-trip from	$1,235
One-way from	$657
Popular in	December
Cheapest in	May
Average price	$1,716

KLM
19/11-24/11
2 total stops
37h 10m total
London to Southeast Asia

Search Deals

28/9
2 total stops
31h 05m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($183 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($71 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 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 10 July 2025.

Wed 19/1110:00LCY - KUL

1 stop21h 45mKLM

Mon 24/1123:50KUL - LCY

1 stop15h 25mKLM

Deal found 8/7$1,235

Wed 17/910:00LCY - HKT

2 stops22h 05mKLM

Wed 1/1007:35HKT - LCY

2 stops29h 40mKLM

Deal found 8/7$1,292

Tue 28/1019:10LCY - DPS

2 stops20h 45mSWISS

Wed 12/1113:00DPS - LCY

2 stops27h 35mSWISS

Deal found 8/7$1,310

Tue 4/1119:10LCY - KUL

2 stops29h 00mSWISS

Tue 18/1120:30KUL - LCY

2 stops24h 20mSWISS

Deal found 8/7$1,332

Thu 20/1109:20LCY - DPS

1 stop27h 00mKLM

Sun 18/121:40DPS - LCY

2 stops26h 55mKLM

Deal found 9/7$1,391

Tue 2/1219:10LCY - KUL

2 stops17h 30mMultiple Airlines

Tue 27/121:45KUL - LCY

2 stops19h 30mMultiple Airlines

Deal found 9/7$1,391

Tue 4/1114:05STN - KUL

1 stop16h 40mEmirates

Tue 25/1110:15KUL - STN

1 stop15h 45mEmirates

Deal found 9/7$1,413

Tue 16/907:40LTN - DPS

2 stops43h 10mMultiple Airlines

Sat 11/1019:40DPS - LTN

2 stops34h 50mMultiple Airlines

Deal found 8/7$1,425

Tue 12/814:35LTN - HKT

2 stops35h 20mMultiple Airlines

Tue 19/808:45HKT - LTN

2 stops19h 25mMultiple Airlines

Deal found 8/7$1,515

Tue 25/1119:10LCY - HKT

1 stop33h 15mSWISS

Tue 2/1221:50HKT - LCY

2 stops46h 00mSWISS

Deal found 8/7$1,589

Sun 14/914:55STN - HKT

2 stops21h 35mEmirates

Mon 6/1019:10HKT - STN

2 stops29h 35mEmirates

Deal found 9/7$1,612

Tue 23/907:40LTN - KUL

2 stops39h 20mMultiple Airlines

Sat 27/919:15KUL - LTN

2 stops35h 15mMultiple Airlines

Deal found 9/7$1,623

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 10 July 2025.

Wed 19/1110:00LCY - KUL

1 stop21h 45mKLM

Mon 24/1123:50KUL - LCY

1 stop15h 25mKLM

Deal found 8/7$1,235

Tue 28/1019:10LCY - DPS

2 stops20h 45mSWISS

Wed 12/1113:00DPS - LCY

2 stops27h 35mSWISS

Deal found 8/7$1,310

Tue 2/1219:10LCY - KUL

2 stops17h 30mMultiple Airlines

Tue 27/121:45KUL - LCY

2 stops19h 30mMultiple Airlines

Deal found 9/7$1,391

Tue 4/1114:05STN - KUL

1 stop16h 40mEmirates

Tue 25/1110:15KUL - STN

1 stop15h 45mEmirates

Deal found 9/7$1,413

Wed 17/910:00LCY - HKT

2 stops22h 05mKLM

Wed 1/1007:35HKT - LCY

2 stops29h 40mKLM

Deal found 8/7$1,292

Tue 4/1119:10LCY - KUL

2 stops29h 00mSWISS

Tue 18/1120:30KUL - LCY

2 stops24h 20mSWISS

Deal found 8/7$1,332

Tue 16/907:40LTN - DPS

2 stops43h 10mMultiple Airlines

Sat 11/1019:40DPS - LTN

2 stops34h 50mMultiple Airlines

Deal found 8/7$1,425

Thu 20/1109:20LCY - DPS

1 stop27h 00mKLM

Sun 18/121:40DPS - LCY

2 stops26h 55mKLM

Deal found 9/7$1,391

Sun 14/914:55STN - HKT

2 stops21h 35mEmirates

Thu 2/1019:10HKT - STN

2 stops23h 45mEmirates

Deal found 9/7$1,612

Tue 12/814:35LTN - HKT

2 stops35h 20mMultiple Airlines

Tue 19/808:45HKT - LTN

2 stops19h 25mMultiple Airlines

Deal found 8/7$1,515

Tue 25/1119:10LCY - HKT

1 stop33h 15mSWISS

Tue 2/1221:50HKT - LCY

2 stops46h 00mSWISS

Deal found 8/7$1,589

Sun 5/1014:55STN - DPS

1 stop24h 25mEmirates

Sun 12/1000:35DPS - STN

1 stop19h 20mEmirates

Deal found 10/7$1,699

Last-minute flights from London to Southeast Asia
Discover last-minute flight deals from London to Southeast Asia. Data last updated 10 July 2025 and is based on user searches.

Mon 14/721:10STN - HKT

1 stop16h 50mEmirates

Mon 18/823:55HKT - STN

1 stop24h 50mEmirates

Deal found 8/7$2,549

Tue 15/714:55STN - KUL

2 stops22h 45mEmirates

Wed 23/710:15KUL - STN

1 stop15h 30mEmirates

Deal found 7/7$2,230

Tue 15/707:40LTN - HKT

2 stops43h 00mMultiple Airlines

Sat 19/719:45HKT - LTN

2 stops35h 45mMultiple Airlines

Deal found 9/7$2,486

Tue 15/707:40LTN - DPS

2 stops43h 10mMultiple Airlines

Sat 19/719:40DPS - LTN

2 stops36h 50mMultiple Airlines

Deal found 9/7$2,521

Tue 15/720:10LCY - KUL

1 stop36h 30mKLM

Tue 22/723:55KUL - LCY

1 stop24h 25mKLM

Deal found 9/7$2,559

Tue 15/707:40LTN - KUL

2 stops41h 45mMultiple Airlines

Sat 23/822:40KUL - LTN

2 stops33h 50mMultiple Airlines

Deal found 8/7$2,677

Tue 15/710:00LCY - HKT

2 stops22h 05mKLM

Sat 19/721:55HKT - LCY

2 stops28h 20mKLM

Deal found 9/7$2,697

Tue 15/717:00LCY - KUL

2 stops19h 45mLufthansa

Thu 14/820:40KUL - LCY

2 stops18h 40mLufthansa

Deal found 8/7$2,757

Tue 15/708:10LCY - HKT

2 stops27h 10mMultiple Airlines

Tue 19/811:50HKT - LCY

2 stops30h 05mMultiple Airlines

Deal found 9/7$2,807

Wed 16/718:05LCY - KUL

2 stops18h 40mSWISS

Tue 22/718:40KUL - LCY

2 stops21h 10mSWISS

Deal found 9/7$2,243

Wed 16/721:10STN - DPS

2 stops42h 35mEmirates

Tue 22/700:35DPS - STN

1 stop25h 10mEmirates

Deal found 8/7$2,463

Wed 16/709:20LCY - DPS

2 stops27h 05mKLM

Thu 24/720:35DPS - LCY

2 stops27h 45mKLM

Deal found 8/7$2,599

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 10 July 2025.

Sun 28/912:15STN - KUL

2 stops31h 05mMultiple Airlines

Deal found 8/7$657

Sun 28/911:25LTN - KUL

2 stops37h 45mMultiple Airlines

Deal found 8/7$736

Tue 16/907:40LTN - DPS

2 stops43h 10mMultiple Airlines

Deal found 8/7$791

Sat 15/1112:20LCY - DPS

2 stops27h 35mSWISS

Deal found 9/7$837

Sun 28/915:30LCY - KUL

2 stops21h 35mMultiple Airlines

Deal found 8/7$888

Fri 15/822:50STN - DPS

3 stops55h 10mMultiple Airlines

Deal found 7/7$889

Sun 28/921:10STN - KUL

1 stop17h 40mEmirates

Deal found 8/7$912

Sat 15/1108:40LCY - KUL

2 stops39h 30mSWISS

Deal found 9/7$951

Thu 11/914:55STN - HKT

2 stops21h 35mEmirates

Deal found 9/7$961

Fri 15/807:45LCY - DPS

3 stops27h 55mMultiple Airlines

Deal found 7/7$1,030

Sun 24/814:55STN - DPS

2 stops40h 45mEmirates

Deal found 10/7$1,042

Sun 13/717:15LTN - HKT

2 stops33h 25mMultiple Airlines

Deal found 7/7$1,171

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

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

Wed 19/11

10:00-15:45

1 stop21h 45m

Kuala Lumpur Intl

Mon 24/11

23:50-07:15

1 stop15h 25m

$1,235

LondonPhuket City

LCY - HKT

LCYHKT

London City

Wed 17/9

10:00-14:05

2 stops22h 05m

Phuket City

Wed 1/10

07:35-07:15

2 stops29h 40m

$1,292

LondonDenpasar

LCY - DPS

LCYDPS

London City

Tue 28/10

19:10-23:55

2 stops20h 45m

Denpasar Bali Ngurah Rai

Wed 12/11

13:00-08:35

2 stops27h 35m

$1,310

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

Tue 4/11

19:10-08:10

2 stops29h 00m

Kuala Lumpur Intl

Tue 18/11

20:30-12:50

2 stops24h 20m

$1,332

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

Tue 2/12

19:10-20:40

2 stops17h 30m

Kuala Lumpur Intl

Tue 27/1

21:45-09:15

2 stops19h 30m

$1,391

LondonDenpasar

LCY - DPS

LCYDPS

London City

Thu 20/11

09:20-20:20

1 stop27h 00m

Denpasar Bali Ngurah Rai

Sun 18/1

21:40-16:35

2 stops26h 55m

$1,391

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Tue 4/11

14:05-14:45

1 stop16h 40m

Kuala Lumpur Intl

Tue 25/11

10:15-18:00

1 stop15h 45m

$1,413

LondonDenpasar

LTN - DPS

LTNDPS

London Luton

Tue 16/9

07:40-09:50

2 stops43h 10m

Denpasar Bali Ngurah Rai

Sat 11/10

19:40-23:30

2 stops34h 50m

$1,425

LondonPhuket City

LTN - HKT

LTNHKT

London Luton

Tue 12/8

14:35-07:55

2 stops35h 20m

Phuket City

Tue 19/8

08:45-22:10

2 stops19h 25m

$1,515

LondonPhuket City

LCY - HKT

LCYHKT

London City

Tue 25/11

19:10-11:25

1 stop33h 15m

Phuket City

Tue 2/12

21:50-12:50

2 stops46h 00m

$1,589

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 35 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, February is the cheapest month in which you can book a flight from London to Southeast Asia (average of $489). Flying from London to Southeast Asia in December is currently the most expensive (average of $911). 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

See what other customers who have flown with Emirates, KLM, andSWISS from London to Southeast Asia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Emirates

8.1

Very Good

3,288 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,June 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.

Emirates

8.1

Very Good

3,288 reviews

Emirates

8.1

Very Good

3,288 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,June 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.

KLM

7.8

Good

1,370 reviews

Emirates

8.1

Very Good

3,288 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,June 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.

SWISS

7.5

Good

1,652 reviews

Emirates

8.1

Very Good

3,288 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,June 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.

Royal Jordanian

6.8

Okay

411 reviews

Emirates

8.1

Very Good

3,288 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,June 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.

Lufthansa

6.8

Okay

7,199 reviews

Emirates

8.1

Very Good

3,288 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,June 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.

Related info for your journey

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 SWISS ($837), Emirates ($912), and KLM ($1,209).
What are the most popular routes from London to Southeast Asia?
While some choose either London Stansted - Denpasar Bali Ngurah Rai or London City - Phuket City, London City - Denpasar Bali Ngurah Rai is the most popular route from London to Southeast Asia.
What are the most reliable airlines from London to Southeast Asia?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Southeast Asia on time: Thai Airways (71%), EVA Air (70%), Air Canada (67%).
What are the cheapest flights from London to Southeast Asia?
On average you can expect to pay $2,068 for a flight from London to Southeast Asia. The cheapest flight overall is $1,110 while the most popular route, (London City - Denpasar Bali Ngurah Rai) is currently priced at $934.
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, February is the cheapest month in which you can book a flight from London to Southeast Asia (average of $489). Flying from London to Southeast Asia in December is currently the most expensive (average of $911). 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

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Direct flights to

Top 2 airlines flying from London to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	Cheapest$1,170	Average$1,343	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Thai Airways	Cheapest$1,182	Average$1,227	FlexibilityNo cancel fee	On-time77%	Search Thai Airways 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?

Cheapflights helps you find that perfect flight to Southeast Asia from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from London to Southeast Asia with no change fees.

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

Not ready to book yet? You can track prices for flights from London to Southeast Asia on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from London to Southeast Asia from $657

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 28/9. 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 10 July 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 10 July 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 10 July 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 10 July 2025.

Weekly flight availability from London to Southeast Asia

Explore weekly flight availability from London to Southeast Asia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 10 July 2025.

Reviews of airlines servicing Southeast Asia

See what other customers who have flown with Emirates, KLM, andSWISS from London to Southeast Asia have to say. Users have also rated airlines 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.

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?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from London to Southeast Asia

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 10 July 2025.