Cheap flights from London to Southeast Asia from $657
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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
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 10 July 2025.
Round-trip from | $1,235 |
---|---|
One-way from | $657 |
Popular in | December |
Cheapest in | May |
Average price | $1,716 |
Find flight deals from London to Southeast Asia
Cheapest flights from London to Southeast AsiaExplore 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 10 July 2025.
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 10 July 2025.
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 10 July 2025.
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
LondonKuala Lumpur
LCY - KUL
LCYKUL
London City
Wed 19/11
10:00-15:45
1 stop21h 45m
Kuala Lumpur Intl
Mon 24/11
23:50-07:15
1 stop15h 25m
LondonPhuket City
LCY - HKT
LCYHKT
London City
Wed 17/9
10:00-14:05
2 stops22h 05m
Phuket City
Wed 1/10
07:35-07:15
2 stops29h 40m
LondonDenpasar
LCY - DPS
LCYDPS
London City
Tue 28/10
19:10-23:55
2 stops20h 45m
Denpasar Bali Ngurah Rai
Wed 12/11
13:00-08:35
2 stops27h 35m
LondonKuala Lumpur
LCY - KUL
LCYKUL
London City
Tue 4/11
19:10-08:10
2 stops29h 00m
Kuala Lumpur Intl
Tue 18/11
20:30-12:50
2 stops24h 20m
LondonKuala Lumpur
LCY - KUL
LCYKUL
London City
Tue 2/12
19:10-20:40
2 stops17h 30m
Kuala Lumpur Intl
Tue 27/1
21:45-09:15
2 stops19h 30m
LondonDenpasar
LCY - DPS
LCYDPS
London City
Thu 20/11
09:20-20:20
1 stop27h 00m
Denpasar Bali Ngurah Rai
Sun 18/1
21:40-16:35
2 stops26h 55m
LondonKuala Lumpur
STN - KUL
STNKUL
London Stansted
Tue 4/11
14:05-14:45
1 stop16h 40m
Kuala Lumpur Intl
Tue 25/11
10:15-18:00
1 stop15h 45m
LondonDenpasar
LTN - DPS
LTNDPS
London Luton
Tue 16/9
07:40-09:50
2 stops43h 10m
Denpasar Bali Ngurah Rai
Sat 11/10
19:40-23:30
2 stops34h 50m
LondonPhuket City
LTN - HKT
LTNHKT
London Luton
Tue 12/8
14:35-07:55
2 stops35h 20m
Phuket City
Tue 19/8
08:45-22:10
2 stops19h 25m
LondonPhuket City
LCY - HKT
LCYHKT
London City
Tue 25/11
19:10-11:25
1 stop33h 15m
Phuket City
Tue 2/12
21:50-12:50
2 stops46h 00m
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.
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 10 July 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 10 July 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).
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 10 July 2025.
See what other customers who have flown with Emirates, KLM, andSWISS 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.
Crew
Boarding
Entertainment
Comfort
Overall
Food
Reviews
Anonymous,June 2025
KTM - DXB
Crew
Boarding
Entertainment
Comfort
Overall
Food
Reviews
Anonymous,June 2025
KTM - DXB
Crew
Boarding
Entertainment
Comfort
Overall
Food
Reviews
Anonymous,June 2025
KTM - DXB
Crew
Boarding
Entertainment
Comfort
Overall
Food
Reviews
Anonymous,June 2025
KTM - DXB
Crew
Boarding
Entertainment
Comfort
Overall
Food
Reviews
Anonymous,June 2025
KTM - DXB
Crew
Boarding
Entertainment
Comfort
Overall
Food
Reviews
Anonymous,June 2025
KTM - DXB
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.
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.
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 10 July 2025.
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.