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Cheap flights from London to Southeast Asia from $676

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

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 9 January 2026.

Round-trip from

$1,030

One-way from

$676

Popular in

July

Cheapest in

May

Average price

$1,225
22/2-1/3
  • 22/2-1/3
  • 3 total stops
  • 53h 35m total
  • London to Southeast Asia
Search Deals
7/7
  • 7/7
  • 3 total stops
  • 33h 20m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($264 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($57 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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Find flight deals from London to Southeast Asia

Enter your travel dates to find the best prices.

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 9 January 2026.

Sun 22/215:50STN - KUL
2 stops32h 55mMultiple Airlines
Sun 1/309:35KUL - STN
1 stop20h 40mMultiple Airlines
Deal found 7/1$1,030
Tue 16/620:05LHR - DPS
2 stops45h 05mSWISS
Tue 7/713:05DPS - LHR
2 stops25h 50mSWISS
Deal found 8/1$1,031
Sat 30/520:05LHR - DPS
2 stops45h 05mSWISS
Tue 9/613:05DPS - LHR
2 stops25h 50mSWISS
Deal found 6/1$1,034
Sat 14/322:00LHR - DPS
1 stop25h 35mChina Southern
Sat 28/300:40DPS - LHR
2 stops24h 25mChina Southern
Deal found 7/1$1,060
Thu 21/518:40LHR - DPS
2 stops22h 30mMultiple Airlines
Mon 1/619:00DPS - LHR
2 stops30h 40mMultiple Airlines
Deal found 6/1$1,061
Tue 27/109:20LCY - KUL
1 stop22h 20mKLM
Tue 3/223:50KUL - LCY
1 stop17h 40mKLM
Deal found 5/1$1,067
Tue 2/620:05LHR - DPS
2 stops45h 05mSWISS
Thu 11/613:05DPS - LHR
2 stops25h 50mSWISS
Deal found 7/1$1,074
Sun 1/217:15LHR - DPS
2 stops22h 10mChina Southern
Sun 8/208:35DPS - LHR
1 stop40h 25mChina Southern
Deal found 8/1$1,076
Mon 9/214:00LTN - KUL
3 stops32h 10mMultiple Airlines
Sun 15/220:40KUL - LTN
3 stops34h 30mMultiple Airlines
Deal found 6/1$1,080
Wed 23/908:55LHR - DPS
3 stops32h 15mSWISS
Wed 7/1013:05DPS - LHR
2 stops25h 50mSWISS
Deal found 8/1$1,082
Thu 10/908:55LHR - DPS
3 stops32h 15mSWISS
Mon 28/913:05DPS - LHR
2 stops25h 50mSWISS
Deal found 7/1$1,085
Wed 10/606:15STN - KUL
1 stop18h 55mTurkish Airlines
Tue 23/609:50KUL - STN
1 stop19h 20mTurkish Airlines
Deal found 8/1$1,085

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 9 January 2026.
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

Sun 25/1

13:45-15:40

1 stop17h 55m

Kuala Lumpur Intl

Tue 3/2

23:50-07:15

1 stop15h 25m

$1,067

LondonKuala Lumpur

LTN - KUL

LTNKUL

London Luton

Mon 9/2

14:00-06:10

3 stops32h 10m

Kuala Lumpur Intl

Sun 15/2

20:40-23:10

3 stops34h 30m

$1,080

LondonKuala Lumpur

LTN - KUL

LTNKUL

London Luton

Sun 22/2

14:40-19:35

2 stops20h 55m

Kuala Lumpur Intl

Sun 1/3

21:40-14:15

2 stops24h 35m

$1,145

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Fri 15/5

06:15-08:10

1 stop18h 55m

Kuala Lumpur Intl

Tue 9/6

09:50-22:10

1 stop19h 20m

$1,160

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Sun 17/5

06:15-08:10

1 stop18h 55m

Kuala Lumpur Intl

Tue 9/6

09:50-22:10

1 stop19h 20m

$1,160

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Sat 25/4

17:45-08:10

1 stop31h 25m

Kuala Lumpur Intl

Mon 4/5

09:50-16:50

1 stop38h 00m

$1,161

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Thu 19/3

17:20-17:20

1 stop16h 00m

Kuala Lumpur Intl

Sat 2/5

09:50-22:10

1 stop19h 20m

$1,164

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Fri 17/4

10:50-17:15

1 stop23h 25m

Kuala Lumpur Intl

Thu 7/5

09:50-22:10

1 stop19h 20m

$1,182

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Sat 25/4

17:45-08:10

1 stop31h 25m

Kuala Lumpur Intl

Tue 5/5

09:50-16:50

1 stop38h 00m

$1,192

LondonDenpasar

LHR - DPS

LHRDPS

London Heathrow

Tue 19/5

19:50-15:00

1 stop36h 10m

Denpasar Bali Ngurah Rai

Wed 27/5

16:00-16:55

1 stop31h 55m

$1,206

Flights are sorted by cheapest return flights first.

Deals found on 6/1

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, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of $652). Flying from London to Southeast Asia in July is currently the most expensive (average of $977). 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 9 January 2026.

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 9 January 2026.

The most flights from LON to zzYJX are scheduled on a Tuesday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (8 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 9 January 2026.
See what other customers who have flown with Singapore Airlines 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.
Singapore Airlines
8.1
Very Good
1,429 reviews
Check prices

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.1
Very Good
1,429 reviews
Singapore Airlines
8.1
Very Good
1,429 reviews
Check prices

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

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?

    KLM, Turkish Airlines, and Vietnam Airlines can get you from London to Southeast Asia in just under 17h 55m. Your travel time can differ by up to 18h 15m. Airlines will cover a distance of 10562 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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 (83%), Thai Airways (80%), Air Canada (76%).

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

    On average you can expect to pay $2,649 for a flight from London to Southeast Asia. The cheapest flight overall is $1,118 while the most popular route, (London City - Denpasar Bali Ngurah Rai) is currently priced at $910.

  • 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, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of $652). Flying from London to Southeast Asia in July is currently the most expensive (average of $977). 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
Gatwick to Suvarnabhumi flights
Heathrow to Singapore 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 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,050Average$1,403FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Thai AirwaysCheapest$1,153Average$1,196FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

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?

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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