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Cheap flights from London to Southeast Asia from $610

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
5 May — 12 May1
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 30 April 2025.

Round-trip from

$921

One-way from

$610

Popular in

December

Cheapest in

May

Average price

$1,436
Hainan Airlines
  • Hainan Airlines
  • 4/7-10/7
  • 4 total stops
  • 54h 00m total
  • London to Southeast Asia
Search Deals
29/5
  • 29/5
  • 3 total stops
  • 43h 50m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($184 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 April 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 30 April 2025.

Fri 4/722:00LHR - BKK
2 stops30h 00mHainan Airlines
Thu 10/701:30BKK - LHR
2 stops24h 00mHainan Airlines
Deal found 29/4$921
Fri 30/522:05LHR - BKK
1 stop31h 05mShenzhen Airlines
Fri 20/619:30BKK - LHR
1 stop30h 20mShenzhen Airlines
Deal found 28/4$926
Sun 11/521:20LHR - BKK
1 stop24h 45mChina Eastern
Sat 17/521:55BKK - LHR
1 stop26h 45mChina Eastern
Deal found 29/4$938
Sun 11/520:25LHR - BKK
1 stop21h 45mAir China
Fri 16/501:30BKK - LHR
1 stop25h 00mAir China
Deal found 29/4$941
Sat 10/512:10LCY - KUL
1 stop20h 30mKLM
Sun 25/523:55KUL - LCY
1 stop16h 25mKLM
Deal found 29/4$957
Sun 4/522:10LHR - BKK
1 stop20h 00mSAUDIA
Tue 1/715:25BKK - LHR
1 stop22h 05mSAUDIA
Deal found 29/4$1,010
Sun 6/721:05LHR - BKK
1 stop16h 30mAir India
Sat 12/708:40BKK - LHR
1 stop16h 20mAir India
Deal found 29/4$1,016
Wed 11/613:30STN - KUL
2 stops20h 45mMultiple Airlines
Sun 15/610:15KUL - STN
1 stop15h 30mMultiple Airlines
Deal found 29/4$1,045
Wed 27/819:15LHR - BKK
1 stop32h 15mMultiple Airlines
Wed 17/911:35BKK - LHR
1 stop15h 50mMultiple Airlines
Deal found 29/4$1,101
Fri 6/609:55LHR - BKK
1 stop17h 35mKLM
Tue 15/712:05BKK - LHR
1 stop26h 55mKLM
Deal found 29/4$1,109
Mon 11/820:50LHR - BKK
1 stop33h 45mOman Air
Mon 22/919:10BKK - LHR
1 stop30h 00mOman Air
Deal found 29/4$1,118
Wed 11/613:15LTN - KUL
1 stop20h 50mMultiple Airlines
Sun 15/610:50KUL - LTN
1 stop18h 55mMultiple Airlines
Deal found 29/4$1,124

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 30 April 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

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 2/6

22:05-11:10

1 stop31h 05m

Bangkok Suvarnabhumi

Sun 8/6

03:15-19:50

1 stop22h 35m

$884

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 4/7

22:00-10:00

2 stops30h 00m

Bangkok Suvarnabhumi

Thu 10/7

01:30-19:30

2 stops24h 00m

$921

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 11/5

21:20-04:05

1 stop24h 45m

Bangkok Suvarnabhumi

Sat 17/5

21:55-18:40

1 stop26h 45m

$938

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 11/5

20:25-00:10

1 stop21h 45m

Bangkok Suvarnabhumi

Fri 16/5

01:30-20:30

1 stop25h 00m

$941

LondonKuala Lumpur

LCY - KUL

LCYKUL

London City

Sat 10/5

12:10-15:40

1 stop20h 30m

Kuala Lumpur Intl

Sun 25/5

23:55-09:20

1 stop16h 25m

$957

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 10/5

10:00-13:45

1 stop21h 45m

Bangkok Suvarnabhumi

Sun 20/7

15:25-07:30

1 stop22h 05m

$1,010

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 6/7

21:05-19:35

1 stop16h 30m

Bangkok Suvarnabhumi

Sat 12/7

08:40-19:00

1 stop16h 20m

$1,016

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Wed 11/6

13:30-17:15

2 stops20h 45m

Kuala Lumpur Intl

Sun 15/6

10:15-18:45

1 stop15h 30m

$1,045

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 27/8

19:15-09:30

1 stop32h 15m

Bangkok Suvarnabhumi

Wed 17/9

11:35-21:25

1 stop15h 50m

$1,101

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 6/6

09:55-09:30

1 stop17h 35m

Bangkok Suvarnabhumi

Tue 15/7

12:05-09:00

1 stop26h 55m

$1,109

Flights are sorted by cheapest return flights first.

Deals found on 29/4

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 30 April 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 30 April 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 30 April 2025.
Read through reviews of airlines operating flights from London to Southeast Asia, such as EVA Air, Hainan Airlines and Garuda Indonesia. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very Good
1,186 reviews
Check prices

Comfort

8.3

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very Good
1,186 reviews
EVA Air
8.4
Very Good
1,186 reviews
Check prices

Comfort

8.3

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Hainan Airlines
8.1
Very Good
38 reviews
EVA Air
8.4
Very Good
1,186 reviews
Check prices

Comfort

8.3

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Garuda Indonesia
8.1
Very Good
72 reviews
EVA Air
8.4
Very Good
1,186 reviews
Check prices

Comfort

8.3

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Singapore Airlines
8.1
Very Good
1,292 reviews
EVA Air
8.4
Very Good
1,186 reviews
Check prices

Comfort

8.3

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 Shenzhen Airlines ($710), Etihad Airways ($835), and Lufthansa ($842).

  • 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 (69%), Air Canada (68%), EVA Air (62%).

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

    On average you can expect to pay $2,056 for a flight from London to Southeast Asia. The cheapest flight overall is $970 while the most popular route, (London City - Denpasar Bali Ngurah Rai) is currently priced at $952.

  • 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

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.
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 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest$1,206Average$1,251FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Etihad AirwaysCheapest$1,321Average$1,370FlexibilityNo cancel feeOn-time75%
Search Etihad 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.

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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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