Cheap flights from London Heathrow Airport to Southeast Asia from $331
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Southeast Asia departing on 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights
These are some of the best round-trip flight deals from London Heathrow Airport to Southeast Asia that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from London Heathrow Airport to Southeast Asia.
Cheap last minute flights
Planning a quick getaway from London Heathrow Airport to Southeast Asia? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to Southeast Asia, so you can enjoy a seamless trip without layovers.
Air China flights from London Heathrow Airport to Southeast Asia
Our best Air China deals on London Heathrow Airport to Southeast Asia flight tickets
Air China![Air China]()
Mar 6![Air China]()
Mar 24
LHR9:35 pmLondon Heathrow
31h 55m
1 stop
BKK12:30 pmBangkok Suvarnabhumi
BKK1:50 pmBangkok Suvarnabhumi
36h 50m
1 stop
LHR7:40 pmLondon Heathrow
Air China![Air China]()
Mar 6![Air China]()
Mar 24
LHR9:35 pmLondon Heathrow
31h 55m
1 stop
BKK12:30 pmBangkok Suvarnabhumi
BKK1:50 pmBangkok Suvarnabhumi
36h 50m
1 stop
LHR7:40 pmLondon Heathrow
Hainan Airlines flights from London Heathrow Airport to Southeast Asia
Our best Hainan Airlines deals on London Heathrow Airport to Southeast Asia flight tickets
Hainan Airlines![Hainan Airlines]()
Mar 10![Hainan Airlines]()
Mar 30
LHR9:00 pmLondon Heathrow
30h 05m
2 stops
BKK10:05 amBangkok Suvarnabhumi
BKK11:05 amBangkok Suvarnabhumi
38h 25m
2 stops
LHR7:30 pmLondon Heathrow
Hainan Airlines![Hainan Airlines]()
Mar 10![Hainan Airlines]()
Mar 13
LHR9:00 pmLondon Heathrow
30h 05m
2 stops
BKK10:05 amBangkok Suvarnabhumi
BKK7:10 pmBangkok Suvarnabhumi
29h 25m
2 stops
LHR5:35 pmLondon Heathrow
See travel insights to Southeast Asia from
How to get the cheapest flight ticket from London Heathrow Airport to Southeast Asia
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
Airlines
Other information
What is the cheapest month to fly to Southeast Asia?
The month of May is, on average, the cheapest month to fly to Southeast Asia from London Heathrow Airport, with most prices found around $822. If you don’t want to visit Southeast Asia in May, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $827.
What is the cheapest day to depart on your flight to Southeast Asia?
The cheapest day to depart from London Heathrow Airport to Southeast Asia is on a Sunday when prices can be found for as low as $999. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,063. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.
What is the cheapest time of day to depart on your flight to Southeast Asia?
In the afternoon is the cheapest time of day to fly from London Heathrow Airport to Southeast Asia when you can find flight prices for as low as $798. Flying to Southeast Asia in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $1,081. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest London Heathrow to Southeast Asia flight route?
Fly from London Heathrow to Singapore Changi for the best London Heathrow - Southeast Asia flight prices
How far in advance should I book a flight to Southeast Asia?
You are more likely to see cheaper flights to Southeast Asia from London Heathrow Airport when booking 19 weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $928 when searching 19 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from London Heathrow Airport for as low as $853 on momondo.
What cabin class options are available on London Heathrow to Southeast Asia flights?
There are 4 cabin classes available to choose from on London Heathrow to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from London Heathrow to Southeast Asia?
Air China, Hainan Airlines, and China Eastern are the most popular carriers operating from London Heathrow to Southeast Asia
What airlines fly to Southeast Asia?
Thai Airways, Air China and EVA Air are the top three most popular airlines that fly to Southeast Asia from London Heathrow Airport according to our data. Thai Airways is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 25 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.
How many flights depart from London Heathrow Airport to Southeast Asia on average per day?
As of February 2025, 53 flights take off from London Heathrow Airport and land in Southeast Asia each day. The most common flight departure time for this route is 8:00PM, with 63% of daily flights taking off in the evening.
How many flights depart from London Heathrow Airport to Southeast Asia on average per week?
375 flights are operational weekly from London Heathrow Airport to Southeast Asia as of February 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.
Cheap London Heathrow Airport to Southeast Asia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Southeast Asia
Best Price Found | $331 |
|---|---|
Fastest flight time | 11h 20m |
Direct flights | Every day |
Airports in Southeast Asia | 8 airports |
When did momondo last update prices for flights from London Heathrow Airport to Southeast Asia?
Prices for flights from London Heathrow Airport to Southeast Asia were last updated today.
How many operators does momondo search for flights from London Heathrow Airport to Southeast Asia?
The number of operators available for flights from London Heathrow Airport to Southeast Asia is 26 as of February 2025.
How old do you have to be to fly from London Heathrow Airport to Southeast Asia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Southeast Asia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Southeast Asia is Airbus A350-1000 (19.43% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (15.23%), Boeing 777 (14.53%), and Airbus A380-800 (6.86%).
Best airlines flying from London Heathrow Airport to Southeast Asia
Compare and see reviews for airlines that fly from London Heathrow Airport to Southeast Asia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $450 | Free Cancellation | Rating 7.6 87 reviews | |||
| PriceFrom $457 | Free Cancellation | Rating 6.1 11 reviews | |||
| PriceFrom $514 | Free Cancellation | Rating 7.1 205 reviews | |||
| PriceFrom $520 | Free Cancellation | Rating 7.0 126 reviews | |||
| PriceFrom $590 | Free Cancellation | Rating 5.5 2,908 reviews | |||
| PriceFrom $639 | Free Cancellation | Rating 7.3 3,825 reviews | |||
| PriceFrom $649 | Free Cancellation | Rating 7.3 1,179 reviews | |||
| PriceFrom $673 | Free Cancellation | Rating 7.1 299 reviews | |||
| PriceFrom $679 | Free Cancellation | Rating 7.5 1,566 reviews | |||
| PriceFrom $682 | Free Cancellation | Rating 8.3 90 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Southeast Asia?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Southeast Asia for you.
Can I find flights from London to Southeast Asia with flexible booking policies on momondo?
All flight searches from London to Southeast Asia on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to Southeast Asia?
Once all potential London to Southeast Asia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from London to Southeast Asia right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Southeast Asia, momondo offers a useful price alert feature which will track prices for flights to Southeast Asia from London and alert you when they change.
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