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Cheap flights from London to Southeast Asia from $595

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
19 May — 26 May1
1 adult
1 adult, Economy, 0 bags

Cheap 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 19 April 2026.

Mon 1/608:30
STN
-
KUL
2 stops28h 15m
Multiple Airlines
Mon 8/609:50
KUL
-
STN
2 stops19h 30m
Multiple Airlines
Deal found 17/4$892
Mon 1/612:25
LTN
-
KUL
2 stops24h 20m
Multiple Airlines
Mon 8/609:50
KUL
-
LTN
2 stops18h 50m
Multiple Airlines
Deal found 17/4$934
Fri 8/506:20
LTN
-
HKT
2 stops30h 00m
Multiple Airlines
Thu 21/522:50
HKT
-
LTN
2 stops30h 25m
Multiple Airlines
Deal found 18/4$959
Fri 8/516:30
STN
-
HKT
2 stops19h 50m
Multiple Airlines
Thu 21/508:55
HKT
-
STN
2 stops28h 55m
Multiple Airlines
Deal found 18/4$965
Tue 2/608:15
STN
-
HKT
2 stops28h 05m
Multiple Airlines
Tue 9/621:20
HKT
-
STN
2 stops25h 20m
Multiple Airlines
Deal found 18/4$1,012
Sat 9/520:00
STN
-
HKT
2 stops29h 35m
Multiple Airlines
Thu 21/520:50
HKT
-
STN
2 stops22h 05m
Multiple Airlines
Deal found 18/4$1,041
Sat 9/505:40
LTN
-
HKT
2 stops19h 55m
Multiple Airlines
Thu 21/522:50
HKT
-
LTN
2 stops30h 25m
Multiple Airlines
Deal found 18/4$1,085
Tue 2/614:45
LTN
-
HKT
2 stops21h 35m
Multiple Airlines
Tue 9/621:20
HKT
-
LTN
2 stops19h 40m
Multiple Airlines
Deal found 18/4$1,089
Sat 30/505:40
LTN
-
HKT
2 stops19h 55m
Multiple Airlines
Sat 6/612:35
HKT
-
LTN
3 stops31h 40m
Multiple Airlines
Deal found 14/4$1,107
Tue 5/505:40
LTN
-
DPS
3 stops31h 20m
Multiple Airlines
Mon 18/521:55
DPS
-
LTN
3 stops27h 10m
Multiple Airlines
Deal found 14/4$1,138
Tue 5/507:55
STN
-
DPS
3 stops29h 05m
Multiple Airlines
Mon 18/521:55
DPS
-
STN
3 stops27h 20m
Multiple Airlines
Deal found 14/4$1,170
Sun 10/514:55
STN
-
KUL
1 stop16h 30m
Emirates
Wed 3/610:20
KUL
-
STN
1 stop15h 25m
Emirates
Deal found 14/4$1,313

Find 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 19 April 2026.

Round-trip from

$892

One-way from

$595

Popular in

December

Cheapest in

May

Average price

$1,146
1/6-8/6
  • 1/6-8/6
  • 4 total stops
  • 47h 45m total
  • London to Southeast Asia
Search Deals
11/10
  • 11/10
  • 1 total stop
  • 24h 55m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($88 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($47 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 19 April 2026.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKuala Lumpur

LTN - KUL

LTNKUL

London Luton

Mon 1/6

12:25-19:45

2 stops24h 20m

Kuala Lumpur Intl

Mon 8/6

09:50-21:40

2 stops18h 50m

$934

LondonPhuket City

LTN - HKT

LTNHKT

London Luton

Tue 2/6

14:45-18:20

2 stops21h 35m

Phuket City

Tue 9/6

21:20-11:00

2 stops19h 40m

$1,089

LondonPhuket City

LTN - HKT

LTNHKT

London Luton

Sat 30/5

05:40-07:35

2 stops19h 55m

Phuket City

Sat 6/6

12:35-14:15

3 stops31h 40m

$1,107

LondonPhuket City

LTN - HKT

LTNHKT

London Luton

Sat 9/5

05:40-07:35

2 stops19h 55m

Phuket City

Thu 21/5

07:30-14:35

3 stops37h 05m

$1,117

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Thu 14/5

21:05-21:50

1 stop17h 45m

Kuala Lumpur Intl

Thu 4/6

10:20-18:45

1 stop15h 25m

$1,315

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Wed 3/6

21:05-08:35

1 stop28h 30m

Kuala Lumpur Intl

Wed 10/6

10:20-18:45

1 stop15h 25m

$1,322

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Thu 18/6

14:55-14:25

1 stop16h 30m

Kuala Lumpur Intl

Mon 6/7

02:15-18:45

1 stop23h 30m

$1,322

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Mon 22/6

14:55-14:25

1 stop16h 30m

Kuala Lumpur Intl

Mon 6/7

02:15-18:45

1 stop23h 30m

$1,322

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Wed 9/9

14:55-14:25

1 stop16h 30m

Kuala Lumpur Intl

Thu 1/10

10:20-18:45

1 stop15h 25m

$1,323

LondonKuala Lumpur

STN - KUL

STNKUL

London Stansted

Mon 12/10

21:05-21:50

1 stop17h 45m

Kuala Lumpur Intl

Tue 20/10

02:15-12:55

1 stop17h 40m

$1,323

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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 $1,129). Flying from London to Southeast Asia in December is currently the most expensive (average of $1,917). 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 19 April 2026.

When flying from London to Southeast Asia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 24% versus a flight in the morning.

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 19 April 2026.

The most flights from LON to zzYJX are scheduled on a Tuesday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

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?

    Emirates, KLM, and SWISS can get you from London to Southeast Asia in just under 22h 45m. Your travel time can differ by up to 5h 15m. Airlines will cover a distance of 9860 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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 Singapore Airlines ($605), Qatar Airways ($755), and Thai Airways ($1,011).

  • 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 (77%), Air Canada (74%), EVA Air (71%).

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

    On average you can expect to pay $1,736 for a flight from London to Southeast Asia. The cheapest flight overall is $1,092 while the most popular route, (London City - Denpasar Bali Ngurah Rai) is currently priced at $850.

  • 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 $1,129). Flying from London to Southeast Asia in December is currently the most expensive (average of $1,917). 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

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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 Suvarnabhumi flights
Heathrow to Suvarnabhumi 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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