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Cheap flights from London to Southeast Asia from $623

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
18 jun — 25 jun1
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 13 junho 2025.

Round-trip from

$1,156

One-way from

$749

Popular in

December

Cheapest in

May

Average price

$1,174
1/7-9/7
  • 1/7-9/7
  • 5 total stops
  • 70h 55m total
  • London to Southeast Asia
Search Deals
28/9
  • 28/9
  • 2 total stops
  • 31h 50m 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 June 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 13 junho 2025.

ter 1/706:35STN - HKT
3 stops35h 05mMultiple Airlines
qua 9/708:45HKT - STN
2 stops35h 50mMultiple Airlines
Deal found 12/6$1,156
qua 2/707:25STN - KUL
3 stops31h 15mMultiple Airlines
qua 9/711:55KUL - STN
2 stops33h 10mMultiple Airlines
Deal found 11/6$1,170
ter 4/1110:00LCY - KUL
1 stop21h 45mKLM
ter 18/1123:50KUL - LCY
1 stop15h 25mKLM
Deal found 11/6$1,179
sáb 4/1009:20LCY - DPS
2 stops31h 45mSWISS
seg 27/1010:25DPS - LCY
2 stops30h 10mSWISS
Deal found 11/6$1,208
ter 1/714:35LTN - HKT
3 stops24h 55mMultiple Airlines
ter 8/722:50HKT - LTN
2 stops24h 55mMultiple Airlines
Deal found 10/6$1,277
qui 11/921:10STN - KUL
1 stop17h 40mEmirates
qui 25/910:15KUL - STN
1 stop15h 30mEmirates
Deal found 11/6$1,409
seg 10/1117:05LCY - DPS
2 stops19h 15mKLM
dom 23/1121:40DPS - LCY
2 stops26h 55mKLM
Deal found 12/6$1,411
qua 10/908:40LCY - HKT
2 stops23h 25mKLM
ter 23/914:05HKT - LCY
2 stops24h 45mKLM
Deal found 13/6$1,478
ter 23/907:40LTN - KUL
2 stops39h 20mMultiple Airlines
sáb 27/919:15KUL - LTN
2 stops35h 15mMultiple Airlines
Deal found 12/6$1,527
qui 27/1107:05LCY - KUL
2 stops21h 25mMultiple Airlines
qui 4/1217:50KUL - LCY
2 stops25h 00mMultiple Airlines
Deal found 11/6$1,547
ter 2/1219:10LCY - KUL
2 stops29h 00mSWISS
ter 27/120:30KUL - LCY
2 stops20h 15mSWISS
Deal found 11/6$1,564
ter 30/914:55STN - HKT
2 stops21h 35mEmirates
qui 16/1019:10HKT - STN
2 stops23h 45mEmirates
Deal found 11/6$1,610

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 13 junho 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

LondonPhuket City

STN - HKT

STNHKT

London Stansted

ter 1/7

06:35-23:40

3 stops35h 05m

Phuket City

qua 9/7

08:45-14:35

2 stops35h 50m

$1,156

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

qua 2/7

07:25-21:40

3 stops31h 15m

Kuala Lumpur Intl

qua 9/7

11:55-14:05

2 stops33h 10m

$1,170

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

ter 4/11

10:00-15:45

1 stop21h 45m

Kuala Lumpur Intl

ter 18/11

23:50-07:15

1 stop15h 25m

$1,179

LondonDenpasar

LCY - DPS

LCYDPS

London City

sáb 4/10

09:20-00:05

2 stops31h 45m

Denpasar Bali Ngurah Rai

seg 27/10

10:25-08:35

2 stops30h 10m

$1,208

LondonPhuket City

LTN - HKT

LTNHKT

London Luton

ter 1/7

14:35-21:30

3 stops24h 55m

Phuket City

ter 8/7

22:50-17:45

2 stops24h 55m

$1,277

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

qui 11/9

21:10-21:50

1 stop17h 40m

Kuala Lumpur Intl

qua 24/9

10:15-18:45

1 stop15h 30m

$1,409

LondonDenpasar

LCY - DPS

LCYDPS

London City

seg 10/11

17:05-20:20

2 stops19h 15m

Denpasar Bali Ngurah Rai

dom 23/11

21:40-16:35

2 stops26h 55m

$1,411

LondonPhuket City

LCY - HKT

LCYHKT

London City

qua 10/9

08:40-14:05

2 stops23h 25m

Phuket City

ter 23/9

14:05-08:50

2 stops24h 45m

$1,478

LondonKuala Lumpur

LTN - KUL

LTNKUL

London Luton

ter 23/9

07:40-06:00

2 stops39h 20m

Kuala Lumpur Intl

sáb 27/9

19:15-23:30

2 stops35h 15m

$1,527

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

qui 27/11

07:05-12:30

2 stops21h 25m

Kuala Lumpur Intl

qui 4/12

17:50-10:50

2 stops25h 00m

$1,547

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 40 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 13 junho 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 13 junho 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).

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 13 junho 2025.
Read through reviews of airlines operating flights from London to Southeast Asia, such as Emirates, KLM and SWISS. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very Good
3,265 reviews
Check prices

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.
Emirates
8.1
Very Good
3,265 reviews
Emirates
8.1
Very Good
3,265 reviews
Check prices

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.
KLM
7.8
Good
1,358 reviews
Emirates
8.1
Very Good
3,265 reviews
Check prices

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.
SWISS
7.5
Good
1,624 reviews
Emirates
8.1
Very Good
3,265 reviews
Check prices

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.
Lufthansa
6.8
Okay
7,139 reviews
Emirates
8.1
Very Good
3,265 reviews
Check prices

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.

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 Emirates ($910), SWISS ($1,090), and KLM ($1,204).

  • 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 (62%), EVA Air (59%), Air Canada (57%).

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

    On average you can expect to pay $4,994 for a flight from London to Southeast Asia. The cheapest flight overall is $789 while the most popular route, (London City - Denpasar Bali Ngurah Rai) is currently priced at $936.

  • 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 Singapore flights
Heathrow to Suvarnabhumi 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 13 junho 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,173Average$1,347FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Thai AirwaysCheapest$1,186Average$1,230FlexibilityNo 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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