RM 1,431 Find Cheap Flights from London Heathrow Airport to Southeast Asia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Southeast Asia departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Southeast Asia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Southeast Asia, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Booking Insights
Flights Deals

Best Southeast Asia Flight Deals from Heathrow

Cheapest return prices found by our users on KAYAK in the last 72 hours
Kuala Lumpur
Kuala Lumpur1 stopRM 1,895
Kota Kinabalu
Kota Kinabalu2 stopsRM 2,423
Kuching
Kuching2 stopsRM 3,479
Penang
Penang1 stopRM 2,444
Langkawi
Langkawi2 stopsRM 3,411
Johor Bahru
Johor Bahru2 stopsRM 2,981
Miri
Miri2 stopsRM 8,993
Sandakan
Sandakan2 stopsRM 3,973
Alor Setar
Alor Setar2 stopsRM 3,888
Kuala Lumpur
Kuala Lumpur1 stopRM 1,895
Kota Kinabalu
Kota Kinabalu2 stopsRM 2,423
Kuching
Kuching2 stopsRM 3,479
Penang
Penang1 stopRM 2,444
Langkawi
Langkawi2 stopsRM 3,411
Johor Bahru
Johor Bahru2 stopsRM 2,981
Miri
Miri2 stopsRM 8,993
Sandakan
Sandakan2 stopsRM 3,973
Alor Setar
Alor Setar2 stopsRM 3,888

Cheap Flights from Heathrow to Southeast Asia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Southeast Asia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Southeast Asia

Mon, 15 Sep - Tue, 30 Sep
Shenzhen Airlines Logo
22:05 - 19:15LHR-KUL
38h 10m1 stop
Shenzhen Airlines Logo
20:30 - 20:00KUL-LHR
30h 30m1 stop
RM 1,895Shenzhen Airlines
Find Deal
Wed, 3 Sep - Sun, 28 Sep
Shenzhen Airlines Logo
22:05 - 03:20LHR-KUL
22h 15m1 stop
Shenzhen Airlines Logo
20:30 - 19:50KUL-LHR
30h 20m1 stop
RM 1,899Shenzhen Airlines
Find Deal
Fri, 5 Sep - Thu, 18 Sep
Hainan Airlines Logo
22:00 - 19:55LHR-KUL
38h 55m1 stop
Hainan Airlines Logo
21:05 - 19:30KUL-LHR
29h 25m1 stop
RM 2,376Hainan Airlines
Find Deal
Fri, 26 Sep - Sun, 5 Oct
Hainan Airlines Logo
22:00 - 19:55LHR-KUL
38h 55m1 stop
Hainan Airlines Logo
21:05 - 19:30KUL-LHR
29h 25m1 stop
RM 2,393Hainan Airlines
Find Deal
Tue, 2 Sep - Wed, 22 Oct
Singapore Airlines Logo
11:25 - 14:25LHR-PEN
20h 00m1 stop
Singapore Airlines Logo
21:25 - 15:45PEN-LHR
25h 20m1 stop
RM 3,317Singapore Airlines
Find Deal
Tue, 7 Oct - Thu, 23 Oct
Singapore Airlines Logo
20:35 - 20:35LHR-PEN
17h 00m1 stop
Singapore Airlines Logo
10:15 - 19:30PEN-LHR
16h 15m1 stop
RM 3,530Singapore Airlines
Find Deal
Wed, 29 Oct - Wed, 3 Dec
Malaysia Airlines Logo
21:25 - 09:00LHR-JHB
27h 35m1 stop
Malaysia Airlines Logo
06:30 - 05:35JHB-LHR
31h 05m1 stop
RM 3,888Malaysia Airlines
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Malaysia Airlines Logo
21:35 - 10:35LHR-LGK
30h 00m1 stop
Malaysia Airlines Logo
13:45 - 16:35LGK-LHR
33h 50m1 stop
RM 3,905Malaysia Airlines
Find Deal
Tue, 6 Jan - Thu, 19 Feb
British Airways Logo
20:40 - 20:00LHR-LGK
15h 20m1 stop
British Airways Logo
20:40 - 05:25LGK-LHR
16h 45m1 stop
RM 4,258British Airways
Find Deal
Tue, 6 Jan - Wed, 25 Feb
British Airways Logo
20:40 - 20:00LHR-LGK
15h 20m1 stop
British Airways Logo
18:25 - 05:25LGK-LHR
19h 00m1 stop
RM 4,266British Airways
Find Deal
Booking Insights

KAYAK's insights & trends for Heathrow to Southeast Asia flights

Get data-powered insights and trends into flights from Heathrow to Southeast Asia to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest London Heathrow Airport to Southeast Asia flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London Heathrow Airport to Southeast Asia.

The cheapest ticket to Southeast Asia from London Heathrow Airport found in the last 72 hours was to Singapore, at RM 3,685 return. The most popular route is from London Heathrow Airport (LHR) to Singapore (SIN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was RM 3,685.

Can I save money by flying with a stopover from London Heathrow Airport to Southeast Asia?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of RM 4,401, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from London Heathrow Airport to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Southeast Asia is May, when tickets cost RM 3,193 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of return tickets is RM 4,926 and RM 4,722 respectively.

What’s the cheapest day of the week to fly from London Heathrow Airport to Southeast Asia?

The average price of all round-trip flights from London Heathrow Airport to Southeast Asia clicked on KAYAK for each day over the last 12 months.

When flying from London Heathrow Airport to Southeast Asia, you should consider leaving on a Wednesday and avoid Saturdays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

How far in advance should I book a flight from London Heathrow Airport to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London Heathrow Airport to Southeast Asia, you should book around 4 weeks before departure, which saves you about 15% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.


Good to know

Low seasonJune
Cheapest flightRM 1,431
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (35% more expensive on average)
Flight from London Heathrow Airport to Kuala Lumpur Airport

Flights from Heathrow to Southeast Asia: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Heathrow to Southeast Asia 
MartinFlew with Singapore AirlinesLHR-SINJan 2025
It’s a long time sitting in that seat so sit on a cushion!
Verified travelerFlew with Qantas AirwaysLHR-SINSept 2024
Unless you’re flying Business or First Class, definitely take your own travel pillow - they make a difference.
OmarFlew with Qantas AirwaysLHR-SINMay 2024
Qantas lounge was crowded. try other One World lounges
Verified travelerFlew with Singapore AirlinesLHR-SINFeb 2024
Flew with Singapore Airlines great experience and efficient transfer to next flight at Changi . Premium economy was worth the extra giving easier boarding and comfortable seats with more room.

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London Heathrow Airport to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London Heathrow Airport to Southeast Asia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London Heathrow Airport to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Southeast Asia?

    The cheapest time of day to fly to Southeast Asia is generally in the evening, when retur flights cost RM 879 on average. Morning departures are around 12% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Asia is generally in the afternoon, which is peak travel time and where the average cost of a ticket is RM 1,017.

Top tips for finding cheap flights to Southeast Asia

  • Looking for a cheap flight? 25% of our users found tickets from London Heathrow Airport to the following destinations at these prices or less: Kuala Lumpur RM 2,266 one-way - RM 4,877 round-trip; Singapore RM 2,853 one-way - RM 3,713 round-trip

Reviews of the top 3 airlines flying from Heathrow to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from London to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
Singapore AirlinesOverall score based on 1338 reviews
7.9Comfort
8.2Boarding
8.6Crew
8.0Entertainment
7.7Food
Airline reviews

Headwind delayed our flight which wasn’t the airlines fault

10.0 ExcellentRon, Jul 2025PER - SIN
Read more Singapore Airlines reviews

Headwind delayed our flight which wasn’t the airlines fault

Food from Surabaya was below average but from Singapore is much better

Horrendous. We upgraded and they took the money but cancelled one of our tickets. The recline action didn’t work on the seats for the flight from Singapore to London, pre booked meals but they seemed to have disappeared as well.. Phone customer service was horrendous. Took 5 phone calls and no fix. Craig at the airport was the only one who seemed to be able to get the ticket back.

Construction at PDX resulting in very lung walk from the rental car to the gate. SFO, extremely long walk between terminals to get to connecting Singapore airlines flight. My smart watch recorded a total of 3 miles.

Loved the airline with the exception of their carry on limitations. They enforce a strict 7 kilo limit for carry on baggage which is ridiculous. We traveled from SFO to SIN with carry on with no difficulty yet when we checked in Delhi they forced us to check the carry on bags. The weight of our carry on bags were 11 and 12 kilos and while they exceeded the limitations set by Singapore Airlines they were well under weight limitations set by may other carriers. Interestingly my wife and I were each allowed two 22 KG bags to check in addition to the 7 kg carry on for a total weight of 102 KG's. Our total weight with the one bag we planned to check and our two carry ons was 46 kgs.

Crew and service was excellent, but passengers should be offered a welcome drink before take off which did not happen. Food was very good. Unfortunately the lie-flat bed in business class was one of the most uncomfortable I have experienced. The configuration forces you to sleep with your legs at an angle instead of in a straight line, plus there is very little padding on the bed so it wasn't possible to sleep for more than 2-3 hours on an 18 hour flight. For what the airlines charges for a business class ticket their hard product leaves a lot to be desired.

So happy I flew with Singapore Airlines. The customer service is top notch. I am terrified of flying and the staff made me feel so at ease. Will only fly Singapore internationally moving forward.

Delayed 1hour due to storm still didn't get window seat for third flight despite paying £240 extra to book them

Flight from SFO did not include entertainment as it was not working the entire duration of the flight. Was informed that there would be a $350 voucher for the inconvenience. Uncertain how the voucher will be provided.

Check in was easy through self-check-in kiosks just like domestic flights. Staff onboard were fantastic. Some "book the cook" good options weren't great, others really good. Entertainment options a bit limited to what I've experienced on Qantas. Overall a good flight though, especially for the price.

OK seats comfortable, easy boarding/embarking, excellent connection to domestic Malaysia flight with baggage checked through without customs. Catering especially drinks borderline ok luckily less important aspect

Comfortable seats in economy, managed a few hours sleep in an o night flight but the food was terrible. Surprising as Malaysia airlines has been good in the past. Service was mediocre this time too.

Vast improvement needed in customer service. I couldn’t get the drink of my choice during both meals (i.e. sparking water and Diet Coke). I had used plastic cups falling onto me from the tray. No eye contact when they thank you on the way out signalling an insincere thank you.

Jia yung was the flight attendant that made this a miserable flight.

The flight isn’t great, as the plane has faulty with light and noise. It blinks and make noise for 8hrs non stop! Causing health and sensory issues! Causing Hazard matter to all 3 babies that on bassinet seats. This matters affected 12 passengers and the most horrible flight I ever experience. Have been flying with MAS for more 30yrs and this is the worst! Very disappointed

AC not working, just slowly blowing room temperature air. Long taxi time does not help as well. Sweating all over the whole trip.

Did not take as cancelled 3 time so took another airline

It was a 2-hour flight so they didn't have much time for serving food. There was some turbulence so they could not serve hot coffee or tea for the safety reason. Good service, good tasting food, nice plane, a little bit of delay.

The IFE is quite unconvenient if using our own device. Not all passenger brought their own earphone/headphone.

Ok, but legspace on MH0127 from Kul to Per was too small. It was not possible to tilt my seat which I don't understand because the seat in front of my could do it. So I didn't rest on the flight. Also, the crew was probably understaffed because it took very long time to take trash after the meal. Everything very different from the flight with Malaysian Airlines from London to KL.

Everything about the flight check-in was smooth no line the plane is clean and bathroom

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

All good. Loo’s weren’t great and as clean as i would like.

A great flight. The crew was excellent too. Of particular note of excellence was the gluten-free meal which was one of the best offerings I’ve ever had on a plane. Outstanding work, BA chefs.

I was put into business class. Wow! My flight attendant was great! The food amazing’

I got stuffed on both flights into terrible seats. Second flight the seat didn’t even recline and fit s tall person, that’s very uncomfortable.

I arrived at Bridgetown only to fins that a suitcase was missing. It was left at Manchester. I had to wait wait 2 days before deciding on going to collect from the airport personally. I am not happy about paying for baggage at the airport. This I thought was included in the price of the ticket. Who goes away for 2 weeks and does not bring luggage. This was a total rip off and I am not happy. I need someone to contact me before returning so that I don't have to pay all over again to return homde.

Boarding market okay just because of the delay we had, but not related to the crew in any way…

Not so good with their baggage handling as they damaged one of my check in luggage

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.