Cheap flights from London Heathrow Airport to Southeast Asia from $612
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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Heathrow to Southeast Asia
Keep the following information in mind while searching for Heathrow to Southeast Asia flight deals. Data was last updated 4 July 2025.
Round-trip from | $972 |
---|---|
One-way from | $612 |
Popular in | December |
Cheapest in | May |
Average price | $1,706 |
Find flight deals from Heathrow to Southeast Asia
Cheapest flights from Heathrow to Southeast AsiaExplore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.
Explore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Heathrow 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 4 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Southeast Asia that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 20/11
16:40-17:25
1 stop16h 45m
Singapore Changi
Wed 3/12
23:45-18:35
1 stop26h 50m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Tue 28/10
16:30-17:00
1 stop16h 30m
Singapore Changi
Mon 3/11
00:05-11:15
1 stop19h 10m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Sun 2/11
05:00-16:50
1 stop27h 50m
Singapore Changi
Tue 18/11
00:05-08:05
1 stop16h 00m
LondonBangkok
LHR - BKK
LHRBKK
London Heathrow
Thu 27/11
20:05-06:45
1 stop27h 40m
Bangkok Suvarnabhumi
Fri 12/12
20:05-05:55
1 stop16h 50m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Wed 26/11
13:55-09:05
1 stop35h 10m
Singapore Changi
Mon 2/3
20:40-18:25
1 stop29h 45m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Sat 20/9
22:05-02:30
1 stop21h 25m
Singapore Changi
Sun 28/9
03:30-19:50
1 stop23h 20m
LondonBangkok
LHR - BKK
LHRBKK
London Heathrow
Fri 7/11
21:10-02:15
1 stop22h 05m
Bangkok Suvarnabhumi
Fri 21/11
03:15-19:10
1 stop22h 55m
LondonKuala Lumpur
LHR - KUL
LHRKUL
London Heathrow
Sun 19/10
22:05-03:20
1 stop22h 15m
Kuala Lumpur Intl
Thu 13/11
20:30-19:10
1 stop30h 40m
LondonBangkok
LHR - BKK
LHRBKK
London Heathrow
Sun 24/8
06:00-09:45
1 stop21h 45m
Bangkok Suvarnabhumi
Tue 16/9
12:35-21:45
1 stop15h 10m
LondonBangkok
LHR - BKK
LHRBKK
London Heathrow
Fri 22/8
06:30-09:30
1 stop21h 00m
Bangkok Suvarnabhumi
Thu 18/9
11:35-21:25
1 stop15h 50m
Best time to book a flight from Heathrow to Southeast Asia
Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Heathrow with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Southeast Asia
What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of $489). Flying from London Heathrow Airport 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 LHR to YJX?
Find hourly flight availability from Heathrow 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 4 July 2025.
When flying from London Heathrow Airport to Southeast Asia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from London Heathrow Airport to Southeast Asia
Explore weekly flight availability from Heathrow 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 4 July 2025.
The most flights from LHR 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 4 July 2025.
See what other customers who have flown with China Airlines, Hainan Airlines, andGaruda Indonesia from London Heathrow Airport to Southeast Asia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Entertainment
Crew
Food
Overall
Comfort
Reviews
Anonymous,Apr 2025
YVR - TPE
Boarding
Entertainment
Crew
Food
Overall
Comfort
Reviews
Anonymous,Apr 2025
YVR - TPE
Boarding
Entertainment
Crew
Food
Overall
Comfort
Reviews
Anonymous,Apr 2025
YVR - TPE
Boarding
Entertainment
Crew
Food
Overall
Comfort
Reviews
Anonymous,Apr 2025
YVR - TPE
Boarding
Entertainment
Crew
Food
Overall
Comfort
Reviews
Anonymous,Apr 2025
YVR - TPE
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Heathrow to Southeast Asia
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Heathrow to Southeast Asia
Discover the top 2 airlines that operate flights from Heathrow 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 4 July 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from Heathrow to Southeast Asia?
When you search for this flight from Heathrow 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 Heathrow to Southeast Asia?
Cheapflights helps you find that perfect flight to Southeast Asia from Heathrow 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 Heathrow to Southeast Asia with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Southeast Asia flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Heathrow to Southeast Asia become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Southeast Asia from Heathrow today and book when prices fit your budget.