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Cheap flights from London to Southeast Asia from S$ 512

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 3-5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
31 Mar — 7 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 26 March 2025.

Round-trip from

S$ 779

One-way from

S$ 512

Popular in

December

Cheapest in

May

Average price

S$ 1,110
SAUDIA
  • SAUDIA
  • 15-6-8-7
  • 2 total stops
  • 46h 45m total
  • London to Southeast Asia
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3-5
  • 3-5
  • 1 total stop
  • 20h 55m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (S$ 130 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (S$ 52 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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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 26 March 2025.

Sun 15-617:30LHR - BKK
1 stop24h 40mSAUDIA
Tue 8-715:25BKK - LHR
1 stop22h 05mSAUDIA
Deal found 25-3S$ 779
Thu 1-521:20LHR - BKK
1 stop21h 20mChina Eastern
Wed 7-502:10BKK - LHR
1 stop22h 30mChina Eastern
Deal found 25-3S$ 789
Fri 9-522:00LHR - BKK
2 stops30h 00mHainan Airlines
Thu 15-501:30BKK - LHR
2 stops24h 00mHainan Airlines
Deal found 25-3S$ 798
Thu 15-510:00LHR - SIN
1 stop19h 20mGulf Air
Sat 24-520:00SIN - LHR
1 stop17h 55mGulf Air
Deal found 25-3S$ 813
Wed 26-317:05LHR - SIN
1 stop15h 10mMultiple Airlines
Mon 7-422:30SIN - LHR
1 stop27h 05mMultiple Airlines
Deal found 25-3S$ 814
Mon 31-317:35LHR - SIN
1 stop15h 55mAir France
Mon 7-422:30SIN - LHR
1 stop27h 05mAir France
Deal found 25-3S$ 816
Wed 1-1011:25LGW - SIN
1 stop17h 55mGulf Air
Tue 7-1020:00SIN - LGW
1 stop17h 55mGulf Air
Deal found 25-3S$ 816
Thu 29-521:20LHR - SIN
2 stops31h 20mChina Eastern
Sat 14-623:10SIN - LHR
1 stop26h 30mChina Eastern
Deal found 25-3S$ 818
Mon 22-911:35LGW - SIN
2 stops29h 05mChina Eastern
Sat 18-1018:10SIN - LGW
1 stop28h 50mChina Eastern
Deal found 25-3S$ 820
Mon 5-510:00LCY - SIN
1 stop22h 30mKLM
Tue 13-500:40SIN - LCY
1 stop15h 10mKLM
Deal found 24-3S$ 825
Thu 2-1020:25LHR - SIN
1 stop27h 25mAir China
Sun 12-1023:25SIN - LHR
1 stop28h 05mAir China
Deal found 25-3S$ 825
Wed 26-320:25LHR - SIN
1 stop35h 50mKLM
Thu 3-400:40SIN - LHR
1 stop17h 05mKLM
Deal found 25-3S$ 826

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 200,618 searches. Data last updated 26 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

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 15-6

17:30-00:10

1 stop24h 40m

Bangkok Suvarnabhumi

Tue 8-7

15:25-07:30

1 stop22h 05m

S$ 779

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 1-5

21:20-00:40

1 stop21h 20m

Bangkok Suvarnabhumi

Wed 7-5

02:10-18:40

1 stop22h 30m

S$ 789

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 9-5

22:00-10:00

2 stops30h 00m

Bangkok Suvarnabhumi

Thu 15-5

01:30-19:30

2 stops24h 00m

S$ 798

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 15-5

10:00-12:20

1 stop19h 20m

Singapore Changi

Sat 24-5

20:00-06:55

1 stop17h 55m

S$ 813

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 30-4

14:45-09:40

1 stop35h 55m

Singapore Changi

Mon 30-6

21:10-18:45

1 stop28h 35m

S$ 814

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 15-4

21:20-05:25

1 stop25h 05m

Singapore Changi

Sun 25-5

16:35-18:40

1 stop33h 05m

S$ 816

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Wed 21-5

11:25-12:20

1 stop17h 55m

Singapore Changi

Thu 5-6

20:00-06:55

1 stop17h 55m

S$ 824

LondonSingapore

LCY - SIN

LCYSIN

London City

Mon 5-5

10:00-15:30

1 stop22h 30m

Singapore Changi

Tue 13-5

00:40-08:50

1 stop15h 10m

S$ 825

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 5-5

10:00-20:00

3 stops27h 00m

Singapore Changi

Thu 15-5

20:15-20:30

2 stops31h 15m

S$ 828

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 4-6

21:00-12:30

2 stops32h 30m

Singapore Changi

Wed 18-6

17:50-19:00

1 stop32h 10m

S$ 829

Flights are sorted by cheapest return flights first.

Deals found on 25-3

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, January is the cheapest month in which you can book a flight from London to Southeast Asia (average of S$ 134). Flying from London to Southeast Asia in December is currently the most expensive (average of S$ 231). 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 26 March 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.

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 26 March 2025.
See what other customers who have flown with EVA Air, Singapore Airlines and Emirates from London to Southeast Asia have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very Good
1,169 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very Good
1,169 reviews
EVA Air
8.4
Very Good
1,169 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Singapore Airlines
8.1
Very Good
1,284 reviews
EVA Air
8.4
Very Good
1,169 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Emirates
8.0
Very Good
3,190 reviews
EVA Air
8.4
Very Good
1,169 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Air New Zealand
7.9
Good
456 reviews
EVA Air
8.4
Very Good
1,169 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 Eastern (S$ 512), Singapore Airlines (S$ 513), and China Southern (S$ 516).

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

    The most popular flight routes from London to Southeast Asia are London Heathrow - Singapore Changi, London Gatwick - Singapore Changi and London City - Singapore Changi.

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

    Consider Air Canada (71%), Thai Airways (67%) or EVA Air (62%) when booking your flight. These represent the most reliable airlines when flying from London to Southeast Asia.

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

    While on average a flight from London to Southeast Asia is generally S$ 848, our data shows the cheapest flight currently is S$ 600. When looking at the most popular route, (London Heathrow - Singapore Changi), you can expect to pay S$ 711 for that flight.

  • 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, January is the cheapest month in which you can book a flight from London to Southeast Asia (average of S$ 134). Flying from London to Southeast Asia in December is currently the most expensive (average of S$ 231). 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
Gatwick to Singapore flights
Manchester to Singapore flights
Edinburgh to Singapore flights
Birmingham to Singapore flights
Newcastle upon Tyne to Singapore flights

Top 8 airlines flying from London to Southeast Asia

Discover the top 8 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 200,618 searches. Data last updated 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapestS$ 843AverageS$ 1,101FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Air FranceCheapestS$ 862AverageS$ 2,031FlexibilityNo cancel feeOn-time77%
Search Air France flights
Gulf AirCheapestS$ 880AverageS$ 1,105FlexibilityNo cancel feeOn-time67%
Search Gulf Air flights
British AirwaysCheapestS$ 944AverageS$ 1,187FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapestS$ 965AverageS$ 1,034FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Singapore AirlinesCheapestS$ 976AverageS$ 1,275FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
SWISSCheapestS$ 985AverageS$ 1,398FlexibilityNo cancel feeOn-time79%
Search SWISS flights
LufthansaCheapestS$ 1,251AverageS$ 1,727FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to Southeast Asia.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Southeast Asia flexibly with Cheapflights today.

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

Yes! Start tracking prices for London to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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