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Cheap flights from London to Southeast Asia from S$ 476

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 25-1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
15 Feb — 22 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 16 January 2026.

Round-trip from

S$ 717

One-way from

S$ 476

Popular in

July

Cheapest in

May

Average price

S$ 1,056
China Eastern
  • China Eastern
  • 2-2-11-3
  • 2 total stops
  • 43h 30m total
  • London to Southeast Asia
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SAUDIA
  • SAUDIA
  • 25-1
  • 1 total stop
  • 20h 40m total
  • London to Southeast Asia
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Highest demand for flights based on searches. 12% potential increase in price (S$ 194 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (S$ 43 potential savings vs. average return price).
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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 16 January 2026.

Tue 3-221:00
LHR
-
BKK
1 stop19h 55m
China Eastern
Wed 4-305:05
BKK
-
LHR
1 stop19h 25m
China Eastern
Deal found 15-1S$ 717
Mon 9-321:00
LHR
-
HKT
1 stop18h 45m
China Eastern
Wed 1-400:20
HKT
-
LHR
1 stop24h 20m
China Eastern
Deal found 15-1S$ 719
Wed 18-221:00
LHR
-
BKK
1 stop18h 25m
China Eastern
Tue 3-319:55
BKK
-
LHR
1 stop28h 35m
China Eastern
Deal found 15-1S$ 719
Sun 8-321:00
LHR
-
HKT
1 stop18h 45m
China Eastern
Sun 29-318:55
HKT
-
LHR
2 stops53h 45m
China Eastern
Deal found 16-1S$ 726
Mon 19-121:00
LHR
-
BKK
1 stop38h 25m
China Eastern
Mon 9-321:05
BKK
-
LHR
2 stops51h 25m
China Eastern
Deal found 16-1S$ 726
Wed 18-221:00
LHR
-
HKT
1 stop18h 45m
China Eastern
Sat 28-219:35
HKT
-
LHR
2 stops52h 55m
China Eastern
Deal found 15-1S$ 728
Tue 17-221:00
LHR
-
BKK
1 stop19h 55m
China Eastern
Wed 4-302:35
BKK
-
LHR
2 stops45h 55m
China Eastern
Deal found 15-1S$ 728
Mon 9-321:00
LHR
-
HKT
2 stops38h 15m
China Eastern
Sun 29-318:55
HKT
-
LHR
3 stops53h 45m
China Eastern
Deal found 16-1S$ 735
Tue 3-321:00
LHR
-
BKK
2 stops34h 55m
China Eastern
Mon 9-321:05
BKK
-
LHR
2 stops51h 25m
China Eastern
Deal found 16-1S$ 735
Sat 2-521:20
LHR
-
BKK
1 stop33h 10m
China Eastern
Mon 11-505:05
BKK
-
LHR
1 stop19h 35m
China Eastern
Deal found 16-1S$ 738
Sun 3-521:20
LHR
-
HKT
1 stop19h 25m
China Eastern
Mon 11-500:20
HKT
-
LHR
1 stop24h 20m
China Eastern
Deal found 15-1S$ 739
Mon 27-421:20
LHR
-
BKK
2 stops48h 00m
China Eastern
Mon 11-505:05
BKK
-
LHR
1 stop19h 35m
China Eastern
Deal found 15-1S$ 748

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 16 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

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 18-2

21:00-22:25

1 stop18h 25m

Bangkok Suvarnabhumi

Fri 6-3

05:45-17:30

1 stop18h 45m

S$ 719

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 30-4

09:30-11:50

1 stop20h 20m

Bangkok Suvarnabhumi

Wed 6-5

09:45-07:00

1 stop27h 15m

S$ 811

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 1-5

09:30-11:50

1 stop20h 20m

Bangkok Suvarnabhumi

Mon 8-6

03:15-15:05

1 stop17h 50m

S$ 811

LondonSingapore

LTN - SIN

LTNSIN

London Luton

Sun 1-3

21:30-17:20

3 stops35h 50m

Singapore Changi

Sun 8-3

19:40-23:10

2 stops35h 30m

S$ 828

LondonSingapore

LTN - SIN

LTNSIN

London Luton

Wed 18-3

14:00-09:35

2 stops35h 35m

Singapore Changi

Sun 22-3

02:45-23:10

1 stop28h 25m

S$ 831

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sun 8-2

10:35-12:50

1 stop18h 15m

Singapore Changi

Tue 17-2

20:00-06:30

1 stop18h 30m

S$ 842

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 2-2

13:55-11:45

1 stop14h 50m

Bangkok Suvarnabhumi

Sat 28-2

09:25-18:10

1 stop15h 45m

S$ 845

LondonSingapore

LTN - SIN

LTNSIN

London Luton

Thu 5-3

08:00-17:45

2 stops25h 45m

Singapore Changi

Wed 18-3

19:40-19:15

3 stops31h 35m

S$ 846

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 27-4

09:30-06:15

1 stop14h 45m

Bangkok Suvarnabhumi

Wed 6-5

09:45-07:00

1 stop27h 15m

S$ 846

LondonSingapore

LTN - SIN

LTNSIN

London Luton

Sun 12-4

06:20-01:10

1 stop35h 50m

Singapore Changi

Sat 25-4

21:00-14:00

2 stops24h 00m

S$ 854

Flights are sorted by cheapest return flights first.

Deals found on 14-1

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 S$ 563). Flying from London to Southeast Asia in July is currently the most expensive (average of S$ 831). 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 16 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 16 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 16 January 2026.
Read reviews from past customers who have flown with Singapore Airlines, Air China, andGulf Air from London to Southeast Asia. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Boarding

8.3

Overall

8.1

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Singapore Airlines
8.1
Very Good
1,431 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Boarding

8.3

Overall

8.1

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Air China
7.2
Good
137 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Boarding

8.3

Overall

8.1

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Gulf Air
7.2
Good
223 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Boarding

8.3

Overall

8.1

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Lufthansa
6.8
Okay
7,719 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Boarding

8.3

Overall

8.1

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
British Airways
6.7
Okay
7,681 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Boarding

8.3

Overall

8.1

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

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?

    For as low as S$ 842, China Eastern can have you in Southeast Asia from London in 18h 15m. The distance between London and Southeast Asia is about 10863 km. This flight may include one or multiple stops.

  • 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 Lufthansa (S$ 427), SWISS (S$ 444), and Air China (S$ 449).

  • 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 EVA Air (83%), Thai Airways (80%) or Air Canada (76%) when booking your flight. These represent the most reliable airlines when flying from London to Southeast Asia.

  • 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 S$ 563). Flying from London to Southeast Asia in July is currently the most expensive (average of S$ 831). 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
Birmingham to Singapore flights
Edinburgh 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 16 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapestS$ 698AverageS$ 859FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Etihad AirwaysCheapestS$ 700AverageS$ 1,071FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
British AirwaysCheapestS$ 778AverageS$ 1,267FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Gulf AirCheapestS$ 807AverageS$ 978FlexibilityNo cancel feeOn-time67%
Search Gulf Air flights
SWISSCheapestS$ 836AverageS$ 2,138FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Singapore AirlinesCheapestS$ 940AverageS$ 1,430FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
LufthansaCheapestS$ 963AverageS$ 1,706FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Qantas AirwaysCheapestS$ 1,182AverageS$ 2,409FlexibilityNo cancel feeOn-time74%
Search Qantas 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?

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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