Cheap flights from London Heathrow Airport to Southeast Asia from £258
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 3/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London Heathrow Airport to Southeast Asia
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Cheap direct flights
Air China flights from London Heathrow Airport to Southeast Asia
Our best Air China deals on London Heathrow Airport to Southeast Asia flight tickets
Hainan Airlines flights from London Heathrow Airport to Southeast Asia
Our best Hainan Airlines deals on London Heathrow Airport to Southeast Asia flight tickets
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
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 £651. If you are unable to visit Southeast Asia during the month of May, then departing from London Heathrow Airport during the month September is also very affordable. Most momondo users find prices during this month for around £655.
What is the cheapest day to depart on your flight to Southeast Asia?
Our data shows that Wednesday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as £783. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Southeast Asia on Saturday is £819.
What is the cheapest time of day to depart on your flight to Southeast Asia?
At midday 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 £687. Flying to Southeast Asia at midday is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around £866. 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 £735 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 £676 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 Singapore Airlines are the most popular carriers operating from London Heathrow to Southeast Asia
Which 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 29% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 39 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, there are 53 flights per day flying from London Heathrow Airport to Southeast Asia. The most common time of day flights depart is 20:00, with 63% of flights taking off in the evening.
How many flights depart from London Heathrow Airport to Southeast Asia on average per week?
As of February 2025, there are 375 flights per week flying from London Heathrow Airport to Southeast Asia. The most common day of the week flights depart is Mon, with 14% of flights 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 | £258 |
|---|---|
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 are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Southeast Asia?
As of February 2025, there are 40 operators available to choose from for flights from London Heathrow Airport to Southeast Asia.
How old do you have to be to fly from London Heathrow Airport to Southeast Asia?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable 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 £396 | Free Cancellation | Rating 7.4 813 reviews | |||
| PriceFrom £417 | Free Cancellation | Rating 7.4 1,449 reviews | |||
| PriceFrom £426 | Free Cancellation | Rating 7.8 31 reviews | |||
| PriceFrom £443 | Free Cancellation | Rating 7.8 1,333 reviews | |||
| PriceFrom £478 | Free Cancellation | Rating 5.7 7 reviews | |||
| PriceFrom £515 | Free Cancellation | Rating 7.5 1,568 reviews | |||
| PriceFrom £525 | Free Cancellation | Rating 7.6 1,273 reviews | |||
| PriceFrom £540 | Free Cancellation | Rating 6.7 6,986 reviews | |||
| PriceFrom £549 | Free Cancellation | Rating 7.0 396 reviews | |||
| PriceFrom £559 | Free Cancellation | Rating 7.5 654 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Southeast Asia?
Finding the right flight to Southeast Asia from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Southeast Asia quick and easy, saving you time and money.
Can I find flights from London to Southeast Asia with flexible booking policies on momondo?
Flights from London to Southeast Asia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to Southeast Asia?
momondo helps you find the best flight between London and Southeast Asia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from London to Southeast Asia right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Southeast Asia from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.