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Cheap flights from London to Southeast Asia from $782

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 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
23 7월 — 30 7월1
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 18 7월 2025.

Round-trip from

$1,135

One-way from

$782

Popular in

December

Cheapest in

May

Average price

$1,734
KLM
  • KLM
  • 2/11-24/11
  • 2 total stops
  • 33h 20m total
  • London to Southeast Asia
Search Deals
17/8
  • 17/8
  • 2 total stops
  • 33h 35m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($185 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($72 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 18 7월 2025.

일 2/1113:45LCY - KUL
1 stop17h 55mKLM
월 24/1123:50KUL - LCY
1 stop15h 25mKLM
Deal found 17/7$1,135
화 2/1219:10LCY - KUL
2 stops29h 00mSWISS
화 27/120:30KUL - LCY
2 stops20h 15mSWISS
Deal found 18/7$1,323
화 9/1219:10LCY - DPS
2 stops20h 45mSWISS
화 13/120:15DPS - LCY
2 stops24h 35mSWISS
Deal found 18/7$1,331
일 7/914:40LHR - DPS
2 stops22h 25mSAUDIA
금 12/922:15DPS - LHR
2 stops21h 25mSAUDIA
Deal found 16/7$1,333
화 21/1019:30LHR - DPS
2 stops41h 45mLufthansa
일 9/1119:00DPS - LHR
2 stops21h 05mLufthansa
Deal found 18/7$1,340
일 2/1118:40LHR - DPS
2 stops21h 15mSWISS
목 6/1113:00DPS - LHR
2 stops27h 05mSWISS
Deal found 17/7$1,345
화 28/1017:05LCY - DPS
2 stops19h 15mKLM
수 12/1121:40DPS - LCY
2 stops26h 55mKLM
Deal found 18/7$1,348
일 7/905:45LGW - DPS
2 stops45h 05mMultiple Airlines
화 7/1019:40DPS - LGW
2 stops34h 25mMultiple Airlines
Deal found 16/7$1,357
화 9/1218:40LGW - DPS
2 stops21h 15mSWISS
일 18/110:25DPS - LGW
2 stops39h 25mSWISS
Deal found 17/7$1,370
화 2/1219:10LCY - KUL
2 stops17h 30mMultiple Airlines
화 27/121:45KUL - LCY
2 stops19h 30mMultiple Airlines
Deal found 17/7$1,382
수 12/1122:05LHR - DPS
1 stop35h 35mCathay Pacific
일 23/1118:40DPS - LHR
1 stop28h 20mCathay Pacific
Deal found 17/7$1,384
수 17/920:20LHR - DPS
2 stops35h 40mMultiple Airlines
목 16/1018:45DPS - LHR
1 stop32h 50mMultiple Airlines
Deal found 16/7$1,390

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 647,157 searches. Data last updated 18 7월 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

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

일 2/11

13:45-15:40

1 stop17h 55m

Kuala Lumpur Intl

월 24/11

23:50-07:15

1 stop15h 25m

$1,135

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

화 2/12

19:10-08:10

2 stops29h 00m

Kuala Lumpur Intl

화 27/1

20:30-08:45

2 stops20h 15m

$1,323

LondonDenpasar

LCY - DPS

LCYDPS

London City

화 9/12

19:10-23:55

2 stops20h 45m

Denpasar Bali Ngurah Rai

화 13/1

20:15-12:50

2 stops24h 35m

$1,331

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

일 7/9

14:40-20:05

2 stops22h 25m

Denpasar Bali Ngurah Rai

금 12/9

22:15-12:40

2 stops21h 25m

$1,333

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

일 4/1

17:30-15:10

2 stops37h 40m

Denpasar Bali Ngurah Rai

일 18/1

13:00-08:05

2 stops27h 05m

$1,334

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

화 21/10

19:30-20:15

2 stops41h 45m

Denpasar Bali Ngurah Rai

일 9/11

19:00-13:00

2 stops26h 00m

$1,340

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

일 2/11

18:40-23:55

2 stops21h 15m

Denpasar Bali Ngurah Rai

목 6/11

13:00-08:05

2 stops27h 05m

$1,345

LondonDenpasar

LCY - DPS

LCYDPS

London City

화 28/10

17:05-20:20

2 stops19h 15m

Denpasar Bali Ngurah Rai

수 12/11

21:40-16:35

2 stops26h 55m

$1,348

LondonDenpasar

LGW - DPS

LGWDPS

London Gatwick

일 7/9

05:45-09:50

2 stops45h 05m

Denpasar Bali Ngurah Rai

화 7/10

19:40-23:05

2 stops34h 25m

$1,357

LondonDenpasar

LGW - DPS

LGWDPS

London Gatwick

화 9/12

18:40-23:55

2 stops21h 15m

Denpasar Bali Ngurah Rai

일 18/1

10:25-17:50

2 stops39h 25m

$1,370

Flights are sorted by cheapest return flights first.

Deals found on 18/7

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, 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?

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 18 7월 2025.

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

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 18 7월 2025.

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

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 18 7월 2025.
See what other customers who have flown with China Airlines, Emirates, andGaruda Indonesia 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.
China Airlines
8.2
Very Good
745 reviews
Check prices

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Airlines
8.2
Very Good
745 reviews
China Airlines
8.2
Very Good
745 reviews
Check prices

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Emirates
8.1
Very Good
3,288 reviews
China Airlines
8.2
Very Good
745 reviews
Check prices

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Garuda Indonesia
8.1
Very Good
77 reviews
China Airlines
8.2
Very Good
745 reviews
Check prices

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Singapore Airlines
8.1
Very Good
1,328 reviews
China Airlines
8.2
Very Good
745 reviews
Check prices

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
KLM
7.8
Good
1,374 reviews
China Airlines
8.2
Very Good
745 reviews
Check prices

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

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 SWISS ($813), Air India ($835), and SAUDIA ($853).

  • 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: EVA Air (85%), Thai Airways (82%), Air Canada (77%).

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

    On average you can expect to pay $3,598 for a flight from London to Southeast Asia. The cheapest flight overall is $1,124 while the most popular route, (London City - Denpasar Bali Ngurah Rai) is currently priced at $941.

  • 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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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 Singapore flights
Gatwick to Suvarnabhumi flights

Top 2 airlines flying from London to Southeast Asia

Discover the top 2 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 647,157 searches. Data last updated 18 7월 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,095Average$1,458FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Thai AirwaysCheapest$1,191Average$1,236FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

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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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