Cheap flights from London to Southeast Asia from C$ 398
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 to Southeast Asia departing on 8/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Round-trip
1 adult
Economy
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Round-trip
One-way
Last minute
Direct
Cheap round-trip flights
These are some of the best round-trip flight deals from London 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 to Southeast Asia.
Cheap last-minute flights
Planning a quick getaway from London 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.
Qatar Airways flights from London to Southeast Asia
Our best Qatar Airways deals on London to Southeast Asia flight tickets
Qatar Airways![Qatar Airways]()
13 May![Qatar Airways]()
26 May
LGW2:55 p.m.London Gatwick
16h 30m
1 stop
BKK1:25 p.m.Bangkok Suvarnabhumi
BKK2:30 a.m.Bangkok Suvarnabhumi
16h 55m
1 stop
LGW1:25 p.m.London Gatwick
Qatar Airways![Qatar Airways]()
6 May![Qatar Airways]()
3 Jun
LGW2:55 p.m.London Gatwick
16h 30m
1 stop
BKK1:25 p.m.Bangkok Suvarnabhumi
BKK8:00 p.m.Bangkok Suvarnabhumi
16h 40m
1 stop
LGW6:40 a.m.London Gatwick
SAUDIA flights from London to Southeast Asia
Our best SAUDIA deals on London to Southeast Asia flight tickets
SAUDIA![SAUDIA]()
4 May![SAUDIA]()
1 Jul
LHR10:10 p.m.London Heathrow
20h 00m
1 stop
BKK12:10 a.m.Bangkok Suvarnabhumi
BKK3:25 p.m.Bangkok Suvarnabhumi
22h 05m
1 stop
LHR7:30 a.m.London Heathrow
SAUDIA![SAUDIA]()
12 May![SAUDIA]()
13 Jul
LHR10:00 a.m.London Heathrow
21h 45m
1 stop
BKK1:45 p.m.Bangkok Suvarnabhumi
BKK3:25 p.m.Bangkok Suvarnabhumi
22h 05m
1 stop
LHR7:30 a.m.London Heathrow
See travel insights to Southeast Asia from
How to get the cheapest flight ticket from London 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 cheapest month to fly to Southeast Asia from London is in November. Flight prices, which tend to average around C$ 967, are often lower during this time because this is during the off-season. If you don’t want to visit Southeast Asia in November, then you should wait until October to fly from London, when ticket prices are also cheap, with an average price of C$ 1,003.
What is the cheapest day to depart on your flight to Southeast Asia?
The cheapest day to depart from London to Southeast Asia is on a Tuesday when prices can be found for as low as C$ 925. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around C$ 1,294. 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?
According to our data, the cheapest time of day to fly to Southeast Asia is in the evening. momondo users have found flights departing from London to Southeast Asia in the evening for as low as C$ 934. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Southeast Asia are more costly in the afternoon, with an average ticket price of C$ 1,117. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest London to Southeast Asia flight route?
Fly from London Gatwick to Singapore Changi for the best London - 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 when booking 4 weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around C$ 1,270 when searching 4 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from London for as low as C$ 1,204 on momondo.
What cabin class options are available on London to Southeast Asia flights?
There are 3 cabin classes available to choose from on London 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 to Southeast Asia?
Hainan Airlines, Air China, and Oman Air are the most popular carriers operating from London to Southeast Asia
Which airlines fly to Southeast Asia?
Air China, EVA Air and Thai Airways are the top three most popular airlines that fly to Southeast Asia from London according to our data. Air China is the first choice among our users, with 47% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 3 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 to Southeast Asia on average per day?
The number of flights available between London and Southeast Asia is 7 per day as of April 2025. The most frequent departure time is 8:00p.m., with 63% of daily flights leaving in the evening.
How many flights depart from London to Southeast Asia on average per week?
As of April 2025, there are 49 flights per week flying from London 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 to Southeast Asia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Southeast Asia
Best price found | C$ 398 |
|---|---|
Fastest flight time | 11h 25m |
Direct flights | Every day |
Airports in Southeast Asia | 4 airports |
When did momondo last update prices for flights from London to Southeast Asia?
Prices for flights from London to Southeast Asia are refreshed on a daily basis.
How many operators does momondo search for flights from London to Southeast Asia?
The number of operators available for flights from London to Southeast Asia is 3 as of April 2025.
How old do you have to be to fly from London to Southeast Asia?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The necessary travel and health documents for your Southeast Asia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Southeast Asia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to Southeast Asia is Boeing 787-9 Dreamliner (16.39% of total bookings). The next most popular plane models are Boeing 777 (15.12%), Airbus A350-1000 (14.54%), and Boeing 787-8 Dreamliner (6.66%).
Best airlines flying from London to Southeast Asia
Compare and see reviews for airlines that fly from London to Southeast Asia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 744 | Free Cancellation | Rating 7.7 325 reviews | |||
| PriceFrom C$ 815 | Free Cancellation | Rating 7.2 88 reviews | |||
| PriceFrom C$ 1,249 | Free Cancellation | Rating 8.4 1,186 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?
Yes. momondo enables you to select and highlight flights to Southeast Asia from London with this policy.
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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