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Cheap flights from London to Southeast Asia from £292

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
2 Apr — 9 Apr1
1 adult

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 28 March 2025.

Round-trip from

£419

One-way from

£292

Popular in

December

Cheapest in

May

Average price

£642
Air China
  • Air China
  • 6/5-22/5
  • 2 total stops
  • 38h 50m total
  • London to Southeast Asia
Search Deals
15/4
  • 15/4
  • 1 total stop
  • 15h 55m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£43 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 28 March 2025.

Tue 6/522:00LHR - MNL
1 stop20h 30mAir China
Thu 22/506:25MNL - LHR
1 stop18h 20mAir China
Deal found 27/3£419
Fri 25/414:40LHR - MNL
1 stop23h 10mSAUDIA
Fri 2/523:30MNL - LHR
1 stop20h 10mSAUDIA
Deal found 27/3£420
Tue 6/521:20LHR - MNL
1 stop21h 00mChina Eastern
Wed 21/503:55MNL - LHR
1 stop21h 45mChina Eastern
Deal found 27/3£421
Sat 10/517:35LHR - MNL
2 stops29h 25mMultiple Airlines
Wed 11/612:30MNL - LHR
2 stops26h 30mMultiple Airlines
Deal found 27/3£424
Tue 13/522:10LHR - MNL
1 stop35h 35mChina Southern
Wed 28/517:45MNL - LHR
1 stop32h 15mChina Southern
Deal found 27/3£425
Sun 20/422:05LHR - MNL
1 stop20h 35mShenzhen Airlines
Fri 16/502:55MNL - LHR
1 stop23h 55mShenzhen Airlines
Deal found 27/3£437
Mon 28/420:55LHR - MNL
2 stops38h 35mKLM
Tue 13/517:40MNL - LHR
2 stops24h 05mKLM
Deal found 27/3£441
Thu 8/521:20LHR - BKK
1 stop18h 35mChina Eastern
Thu 22/502:10BKK - LHR
1 stop22h 30mChina Eastern
Deal found 27/3£450
Fri 16/511:35LGW - BKK
1 stop28h 20mChina Eastern
Fri 23/502:10BKK - LGW
1 stop18h 50mChina Eastern
Deal found 27/3£451
Thu 24/415:50STN - BKK
2 stops36h 00mMultiple Airlines
Wed 14/502:10BKK - STN
3 stops27h 45mMultiple Airlines
Deal found 27/3£451
Sun 11/507:15LGW - BKK
2 stops44h 35mMultiple Airlines
Sun 18/516:15BKK - LGW
2 stops36h 40mMultiple Airlines
Deal found 27/3£452
Fri 30/512:35LGW - BKK
1 stop23h 35mAir China
Sat 21/601:30BKK - LGW
1 stop35h 05mAir China
Deal found 27/3£453

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 28 March 2025.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

London

Fly to

Southeast Asia

Route

Depart

Return

Price

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 6/5

22:00-01:30

1 stop20h 30m

Manila Ninoy Aquino Intl

Thu 22/5

06:25-17:45

1 stop18h 20m

£419

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Fri 25/4

14:40-20:50

1 stop23h 10m

Manila Ninoy Aquino Intl

Fri 2/5

23:30-12:40

1 stop20h 10m

£420

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 6/5

21:20-01:20

1 stop21h 00m

Manila Ninoy Aquino Intl

Wed 21/5

03:55-18:40

1 stop21h 45m

£421

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Sat 26/4

22:10-16:45

1 stop35h 35m

Manila Ninoy Aquino Intl

Sun 25/5

17:45-19:00

1 stop32h 15m

£428

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Sun 20/4

22:05-01:40

1 stop20h 35m

Manila Ninoy Aquino Intl

Fri 16/5

02:55-19:50

1 stop23h 55m

£437

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Mon 28/4

20:55-18:30

2 stops38h 35m

Manila Ninoy Aquino Intl

Tue 13/5

17:40-10:45

2 stops24h 05m

£441

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Fri 25/4

09:00-18:30

1 stop26h 30m

Manila Ninoy Aquino Intl

Thu 15/5

14:05-21:25

2 stops38h 20m

£448

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 8/5

21:20-21:55

1 stop18h 35m

Bangkok Suvarnabhumi

Thu 22/5

02:10-18:40

1 stop22h 30m

£450

LondonBangkok

STN - BKK

STNBKK

London Stansted

Thu 24/4

15:50-09:50

2 stops36h 00m

Bangkok Suvarnabhumi

Wed 14/5

02:10-23:55

3 stops27h 45m

£451

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 30/5

12:35-18:10

1 stop23h 35m

Bangkok Suvarnabhumi

Sat 21/6

01:30-06:35

1 stop35h 05m

£453

Flights are sorted by cheapest return flights first.

Deals found on 27/3

Showing 1-10 of 60 results
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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, May is the cheapest month in which you can book a flight from London to Southeast Asia (average of £758). Flying from London to Southeast Asia in December is currently the most expensive (average of £1,123). 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?

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 28 March 2025.

When flying from London to Southeast Asia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average rainfall totals by month.

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.

Temperature in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 28 March 2025.
See what other customers who have flown with Garuda Indonesia, China Airlines and Singapore Airlines from London to Southeast Asia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Garuda Indonesia
8.2
Very Good
71 reviews
Check prices

Crew

8.7

Comfort

8.0

Boarding

8.3

Overall

8.2

Entertainment

7.6

Food

7.7

Reviews

1 / 2
10.0
Excellent

Piero,Sept 2024

SYD - DPS

I had a pleasant experience with the cabin staff, who were attentive, friendly, and accommodating throughout the flight. Their professionalism made the journey more comfortable. The food and beverage were well-presented, and delicious, perfectly meeting my expectations. I appreciated that the airline accommodated dietary preferences (Seafood Meal), which enhanced my overall experience. I am writing this feedback on behalf of my friends and family who traveled in the economy class. We strongly believe that there is a splendid opportunity to further enrich the economy class experience by introducing a new feature for purchase, drawing inspiration from your existing product, 'Garuda Priority Service.' 1. Enhanced Meal Options Introduce a premium meal selection for purchase in the economy class. This would allow economy class passengers to relish business class meals. Providing the option to savor premium meals would undoubtedly elevate the travel experience for passengers. 2. Upgraded Amenity Kits Offer economy class passengers the opportunity to purchase enhanced amenity kits, inclusive of noise-canceling headphones and other amenities akin to those provided in the business class. The provision of these upgraded amenity kits would significantly enhance the in-flight comfort and overall experience for economy class travelers. 3. Displaying the menu on the in-flight entertainment screen would be helpful. 4. Implementing a system similar to Tapendium, where passengers can order snacks, beverages, and other items directly from the in-flight entertainment screen, would further enhance the passenger experience.
Garuda Indonesia
8.2
Very Good
71 reviews
Garuda Indonesia
8.2
Very Good
71 reviews
Check prices

Crew

8.7

Comfort

8.0

Boarding

8.3

Overall

8.2

Entertainment

7.6

Food

7.7

Reviews

1 / 2
10.0
Excellent

Piero,Sept 2024

SYD - DPS

I had a pleasant experience with the cabin staff, who were attentive, friendly, and accommodating throughout the flight. Their professionalism made the journey more comfortable. The food and beverage were well-presented, and delicious, perfectly meeting my expectations. I appreciated that the airline accommodated dietary preferences (Seafood Meal), which enhanced my overall experience. I am writing this feedback on behalf of my friends and family who traveled in the economy class. We strongly believe that there is a splendid opportunity to further enrich the economy class experience by introducing a new feature for purchase, drawing inspiration from your existing product, 'Garuda Priority Service.' 1. Enhanced Meal Options Introduce a premium meal selection for purchase in the economy class. This would allow economy class passengers to relish business class meals. Providing the option to savor premium meals would undoubtedly elevate the travel experience for passengers. 2. Upgraded Amenity Kits Offer economy class passengers the opportunity to purchase enhanced amenity kits, inclusive of noise-canceling headphones and other amenities akin to those provided in the business class. The provision of these upgraded amenity kits would significantly enhance the in-flight comfort and overall experience for economy class travelers. 3. Displaying the menu on the in-flight entertainment screen would be helpful. 4. Implementing a system similar to Tapendium, where passengers can order snacks, beverages, and other items directly from the in-flight entertainment screen, would further enhance the passenger experience.
China Airlines
8.2
Very Good
722 reviews
Garuda Indonesia
8.2
Very Good
71 reviews
Check prices

Crew

8.7

Comfort

8.0

Boarding

8.3

Overall

8.2

Entertainment

7.6

Food

7.7

Reviews

1 / 2
10.0
Excellent

Piero,Sept 2024

SYD - DPS

I had a pleasant experience with the cabin staff, who were attentive, friendly, and accommodating throughout the flight. Their professionalism made the journey more comfortable. The food and beverage were well-presented, and delicious, perfectly meeting my expectations. I appreciated that the airline accommodated dietary preferences (Seafood Meal), which enhanced my overall experience. I am writing this feedback on behalf of my friends and family who traveled in the economy class. We strongly believe that there is a splendid opportunity to further enrich the economy class experience by introducing a new feature for purchase, drawing inspiration from your existing product, 'Garuda Priority Service.' 1. Enhanced Meal Options Introduce a premium meal selection for purchase in the economy class. This would allow economy class passengers to relish business class meals. Providing the option to savor premium meals would undoubtedly elevate the travel experience for passengers. 2. Upgraded Amenity Kits Offer economy class passengers the opportunity to purchase enhanced amenity kits, inclusive of noise-canceling headphones and other amenities akin to those provided in the business class. The provision of these upgraded amenity kits would significantly enhance the in-flight comfort and overall experience for economy class travelers. 3. Displaying the menu on the in-flight entertainment screen would be helpful. 4. Implementing a system similar to Tapendium, where passengers can order snacks, beverages, and other items directly from the in-flight entertainment screen, would further enhance the passenger experience.
Singapore Airlines
8.1
Very Good
1,285 reviews
Garuda Indonesia
8.2
Very Good
71 reviews
Check prices

Crew

8.7

Comfort

8.0

Boarding

8.3

Overall

8.2

Entertainment

7.6

Food

7.7

Reviews

1 / 2
10.0
Excellent

Piero,Sept 2024

SYD - DPS

I had a pleasant experience with the cabin staff, who were attentive, friendly, and accommodating throughout the flight. Their professionalism made the journey more comfortable. The food and beverage were well-presented, and delicious, perfectly meeting my expectations. I appreciated that the airline accommodated dietary preferences (Seafood Meal), which enhanced my overall experience. I am writing this feedback on behalf of my friends and family who traveled in the economy class. We strongly believe that there is a splendid opportunity to further enrich the economy class experience by introducing a new feature for purchase, drawing inspiration from your existing product, 'Garuda Priority Service.' 1. Enhanced Meal Options Introduce a premium meal selection for purchase in the economy class. This would allow economy class passengers to relish business class meals. Providing the option to savor premium meals would undoubtedly elevate the travel experience for passengers. 2. Upgraded Amenity Kits Offer economy class passengers the opportunity to purchase enhanced amenity kits, inclusive of noise-canceling headphones and other amenities akin to those provided in the business class. The provision of these upgraded amenity kits would significantly enhance the in-flight comfort and overall experience for economy class travelers. 3. Displaying the menu on the in-flight entertainment screen would be helpful. 4. Implementing a system similar to Tapendium, where passengers can order snacks, beverages, and other items directly from the in-flight entertainment screen, would further enhance the passenger experience.
Hainan Airlines
8.0
Very Good
34 reviews
Garuda Indonesia
8.2
Very Good
71 reviews
Check prices

Crew

8.7

Comfort

8.0

Boarding

8.3

Overall

8.2

Entertainment

7.6

Food

7.7

Reviews

1 / 2
10.0
Excellent

Piero,Sept 2024

SYD - DPS

I had a pleasant experience with the cabin staff, who were attentive, friendly, and accommodating throughout the flight. Their professionalism made the journey more comfortable. The food and beverage were well-presented, and delicious, perfectly meeting my expectations. I appreciated that the airline accommodated dietary preferences (Seafood Meal), which enhanced my overall experience. I am writing this feedback on behalf of my friends and family who traveled in the economy class. We strongly believe that there is a splendid opportunity to further enrich the economy class experience by introducing a new feature for purchase, drawing inspiration from your existing product, 'Garuda Priority Service.' 1. Enhanced Meal Options Introduce a premium meal selection for purchase in the economy class. This would allow economy class passengers to relish business class meals. Providing the option to savor premium meals would undoubtedly elevate the travel experience for passengers. 2. Upgraded Amenity Kits Offer economy class passengers the opportunity to purchase enhanced amenity kits, inclusive of noise-canceling headphones and other amenities akin to those provided in the business class. The provision of these upgraded amenity kits would significantly enhance the in-flight comfort and overall experience for economy class travelers. 3. Displaying the menu on the in-flight entertainment screen would be helpful. 4. Implementing a system similar to Tapendium, where passengers can order snacks, beverages, and other items directly from the in-flight entertainment screen, would further enhance the passenger experience.

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?

    The cheapet airlines for a one-way flight from London to Southeast Asia are China Southern (£292), SAUDIA (£295), and China Eastern (£296).

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

    The most popular route from London to Southeast Asia is London Heathrow - Bangkok Suvarnabhumi. You may also consider London Gatwick - Bangkok Suvarnabhumi or London City - Bangkok Suvarnabhumi.

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

    No one likes to see their flight delayed. When booking a flight from London to Southeast Asia consider choosing Air Canada (71%), Thai Airways (67%) or EVA Air (62%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London to Southeast Asia?

    The cheapest flight price from London to Southeast Asia is £360. On average you can expect to pay £2,722. The most popular route, (London Heathrow - Bangkok Suvarnabhumi), can usually be booked for £307.

  • 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, May is the cheapest month in which you can book a flight from London to Southeast Asia (average of £758). Flying from London to Southeast Asia in December is currently the most expensive (average of £1,123). 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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Alternative routes for London to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Suvarnabhumi flights
Heathrow to Haneda flights
Gatwick to Suvarnabhumi flights
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Gatwick to Narita flights
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London City to Manila flights
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Heathrow to Hyderabad flights
London City to Denpasar flights
Gatwick to Kuala Lumpur Intl flights
Stansted to Denpasar flights
Stansted to New Delhi flights
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Gatwick to New Delhi flights
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Stansted to Kuala Lumpur Intl flights
London City to New Delhi flights
London City to Kuala Lumpur Intl flights
Gatwick to Lahore flights
Heathrow to Gimpo Intl flights
Gatwick to Islamabad flights
Stansted to Lahore flights
London City to Hong Kong flights
Gatwick to Hong Kong flights
Stansted to Mumbai flights

Top 10 airlines flying from London to Southeast Asia

Discover the top 10 airlines that operate flights from London to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkmenistan AirlinesCheapest£299Average£558FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
Qantas AirwaysCheapest£387Average£723FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air FranceCheapest£407Average£717FlexibilityNo cancel feeOn-time77%
Search Air France flights
Hainan AirlinesCheapest£413Average£469FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Norse Atlantic UKCheapest£447Average£583FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Royal JordanianCheapest£477Average£641FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
Royal Brunei AirlinesCheapest£480Average£614FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
LufthansaCheapest£504Average£737FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
A.P.G.Cheapest£530Average£781FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
Virgin AtlanticCheapest£546Average£683FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Southeast Asia from London today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to Southeast Asia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from London to Southeast Asia with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Of course! You can now track prices for flights from London to Southeast Asia and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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