RM 1,382 Find Cheap Flights from London Heathrow Airport to Southeast Asia

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Southeast Asia departing on 31/3. 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.
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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
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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 1,382
Kota Kinabalu
Kota Kinabalu1 stopRM 2,857
Kuching
Kuching2 stopsRM 4,098
Penang
Penang1 stopRM 2,601
Langkawi
Langkawi1 stopRM 3,732
Johor Bahru
Johor Bahru2 stopsRM 3,405
Miri
Miri2 stopsRM 5,251
Sandakan
Sandakan1 stopRM 4,120

Good to know

Low season

June

High season

December

Cheapest flight

RM 1,382
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly (28% 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.
NorhayatiFlew with Malaysia AirlinesLHR-KULMar 2024
Take MH (Malaysia Airline) coz they are good
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.

See more FAQs

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 2,234 one-way - RM 3,361 round-trip; Singapore RM 2,052 one-way - RM 3,515 round-trip
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be June, July and August. The cheapest month to fly from London is May.

Top 4 airlines serving 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 1297 reviews
7.7Food
7.9Comfort
8.0Entertainment
8.6Crew
8.2Boarding
Airline reviews

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.

6.0 GoodDavid, Feb 2025JFK - SIN
Read more Singapore Airlines reviews

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.

Food could have been better. Too many passengers getting up and down all the time.

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.

The food options and quality could use some more excitement and variety.

Flight was delayed by baggage loading onto the plane. This was attributed to "inclement weather" (some moderate rain) which could be said to be beyond the airline's control, but the problematic part was that the plane was boarded and doors shut so that passengers sat in a cramped plane with rising temperature (full flight) for an hour. The airline was aware of the status of baggage loading, they could have deferred boarding to keep passengers comfortable.

The crew have great customer service but their economy seating isn’t the most comfortable for a 220lbs+ guy and the food wasn’t bad, but wasn’t exceptional, either.

Service excellent would chose Singapore airlines as my first choice

My groups frequent flyer star allianceUnited airline miles was not accepted. The Singapore premium economy bag had to be requested, it was very lacking- no toothbrush. I paid more than double than economy but could only use the bathrooms sharing with economy which was hardly available and had to wait in line. Is the 2X $ worth it just for a larger seat???? It is questionable. Seats were not that comfortable. My husband’s seat had white stains on it- had to wipe it down. Our headphones did not have covers on it. Food- way too much.

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.

Service / food has to be much better. Staff were not very attentive to requests. Requested for a second serve of coke and got a weird look back from the host! Was also told they don’t have extra water bottles when I requested for one before sleep! Dinner time food was very minimum and average.

An overnight Doha to KL. Great sleep, good service and tasty food in business class

chaos boarding. Crew in business class seemed short staffed and lacking in attention to details initially, but did improve during flight.

Excellent experience however older aeroplanes used by China Eastern Airlines.

The crew were excellent, service amazing, blankets and pillow good, cabin temperature perfect, the flight on time, food was unusual selection however plentiful, price for tickets unbeatable through Kayak. Older aeroplanes used by China Eastern was the only down side.

Delay in off-boarding due to customs at SFO... pilot announcement should have come earlier so passengers don't clog aisles.

Better good than most, if not all European airlines. If you’re stuck in an economy seat anyways, China Eastern is a good choice because of shorter flight time, being able to overfly Russia

The temperature of the plane cabin is too hot. Sweat and uncomfortable. Also my food tray was broken down drinks fall off

Reasonable. What they offer during the flight is not great, but the crew is polite and try to compensate it.

Price is the main attraction. Staff is OK but difficult to communicate with them due to general lack of English. Food is truly abysmal, the main courses (4) were barely edible. The choices for breakfast served at 5:30 am prior to landing at Gatwick airport were Spaghetti Bolognese or seafood fried rice. Choices offered for all 4 mains were either something rice or noodles. Shanghai airport layover is much too long in a very poorly serviced airport. We were unable to use WiFi; private lounges required cash only payment with no ATM or cash exchange open.

I was surprised and appreciate that they actually served a hot meal on such a short, early morning flight. The check in and boarding was hassle free and most of all my Alliance Status / Code Share was recognized and the revelant courtesy was extended; other than some needed attention to detail concerning the cleanliness of the cabin, and some unnecessary aggressive wording their safety briefing, it was an overall pleasant flight, and I would certainly fly with them again.

Flight was delayed for more than 3 hours, food was mediocre, seat didn’t recline

Lost Baggage - very frustrated…learned that bag was never put on plane.

American Airlines seemed to run a 'dry' flight. No alcohol was offered at any point with meals. Breakfast was a bit tasteless. The 'hot pocket' whatever that is, was horrid breadish pastry with very little filling. Decaf coffee was horrid. Seats didn't seem as wide or spacious as usual, especually for a ten hour flight.

We found the bag drop/ check-in proceedure at T5 unnecessarily complicated. We paid extra for seat selection in advance and were allocated worse seats at T5. We found the check-in person was not particularly helpful although the the staff at the gate were super good.

Very dated plane. Seat was firm and uncomfortable. Entertainment system almost laughably outdated. Poor audio. Picture was always too dark.

The seats on the plane and at Heathrow Airport are so uncomfortable

They did not provide free WiFi, It could be purchased for, I think, around $25, This seemed excessive.

Good flight, awful, vindictive, vile customer services in T5 Heathrow.

Ok we did get an upgrade and the flight was delayed 45 minutes BUT without any bias. The crew were excellent, friendly, efficient and verging on exuberant, they all were so happy to do their jobs. Food excellent and the new safety video is fun to watch.

Reliable, great value, but not outstanding in any aspect. This is similar to the experience you get in most international carriers like Etihad or Delta.

Aer Lingus was the actual airline so they handled everything professionally.

Flight got diverted because of an emergency and the crew were fantastic and probably saved that passenger’s life. While in emergency landing some measures could have been taken to prevent additional delays. In general not great experience with BA. I used to fly BA years ago all the time, very disappointed by the whole experience, seats were tight, bathrooms tight.

Book cheap flights from London to Southeast Asia

Recent return flight deals

 
These are the cheapest return flights from London to Southeast Asia found on KAYAK in the last 72 hours.
31/3Mon
1 stopCathay Pacific
20h 10mLHR-KUL
30/4Wed
1 stopCathay Pacific
33h 55mKUL-LHR
RM 1,382
1/4Tue
1 stopCathay Pacific
30h 50mLHR-KUL
23/4Wed
1 stopCathay Pacific
38h 05mKUL-LHR
RM 1,908
26/3Wed
1 stopChina Eastern
19h 55mLHR-KUL
13/4Sun
1 stopChina Eastern
33h 35mKUL-LHR
RM 2,398
16/4Wed
1 stopChina Eastern
34h 30mLHR-KUL
14/5Wed
1 stopChina Eastern
23h 45mKUL-LHR
RM 2,407
21/3Fri
directMalaysia Airlines
12h 50mLHR-KUL
24/3Mon
directMalaysia Airlines
14h 00mKUL-LHR
RM 3,193
15/3Sat
directMalaysia Airlines
12h 55mLHR-KUL
25/3Tue
directMalaysia Airlines
14h 00mKUL-LHR
RM 3,272
22/4Tue
1 stopSingapore Airlines
22h 15mLHR-LGK
29/4Tue
1 stopSingapore Airlines
34h 20mLGK-LHR
RM 3,732
22/4Tue
2 stopsSingapore Airlines
19h 50mLHR-LGK
29/4Tue
1 stopSingapore Airlines
34h 20mLGK-LHR
RM 3,935
16/5Fri
1 stopBritish Airways
18h 45mLHR-BKI
24/5Sat
1 stopBritish Airways
18h 40mBKI-LHR
RM 7,114
16/5Fri
1 stopBritish Airways
18h 45mLHR-BKI
24/5Sat
1 stopBritish Airways
18h 40mBKI-LHR
RM 7,119

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Southeast Asia found on KAYAK in the last 72 hours.
20/4Sun
2 stops
40h 20mLHR-KUL
RM 1,448
6/5Tue
2 stops
29h 40mLHR-KUL
RM 1,554
4/3Tue
2 stopsChina Eastern
43h 30mLHR-KUL
RM 1,665
19/3Wed
1 stopChina Eastern
27h 50mLHR-KUL
RM 1,722
23/4Wed
1 stopAir China
19h 35mLHR-KUL
RM 1,753
2/3Sun
1 stopAir China
18h 35mLHR-KUL
RM 1,762
19/3Wed
directMalaysia Airlines
12h 50mLHR-KUL
RM 2,173
17/4Thu
1 stopSingapore Airlines
15h 40mLHR-KUL
RM 2,182
23/4Wed
directMalaysia Airlines
13h 15mLHR-KUL
RM 2,186
24/3Mon
1 stopSingapore Airlines
18h 15mLHR-SZB
RM 2,491

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Last minute flights from Heathrow to Southeast Asia

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to Southeast Asia that are departing in the next 10 days.
28/2Fri
multi-stopChina Eastern
19h 55mLHR-KUL
2/4Wed
multi-stopChina Eastern
23h 45mKUL-LHR
RM 2,398
25/2Tue
multi-stopChina Eastern
36h 50mLHR-KUL
11/3Tue
multi-stopChina Eastern
38h 50mKUL-LHR
RM 2,522
27/2Thu
multi-stopChina Eastern
23h 05mLHR-KUL
11/3Tue
multi-stopChina Eastern
20h 00mKUL-LHR
RM 2,526
28/2Fri
multi-stopShenzhen Airlines
22h 20mLHR-KUL
7/3Fri
multi-stopShenzhen Airlines
30h 40mKUL-LHR
RM 2,575
28/2Fri
multi-stopShenzhen Airlines
22h 20mLHR-KUL
6/3Thu
multi-stopShenzhen Airlines
22h 40mKUL-LHR
RM 2,588
27/2Thu
directMalaysia Airlines
12h 50mLHR-KUL
6/3Thu
directMalaysia Airlines
14h 00mKUL-LHR
RM 3,193
25/2Tue
directMalaysia Airlines
12h 55mLHR-KUL
11/3Tue
directMalaysia Airlines
14h 00mKUL-LHR
RM 3,272
28/2Fri
multi-stopBritish Airways
15h 45mLHR-KUL
3/4Thu
directBritish Airways
13h 35mKUL-LHR
RM 4,001
24/2Mon
multi-stopSingapore Airlines
31h 05mLHR-SZB
5/3Wed
multi-stopSingapore Airlines
34h 45mSZB-LHR
RM 4,813
28/2Fri
multi-stopSingapore Airlines
18h 15mLHR-SZB
7/3Fri
multi-stopSingapore Airlines
37h 00mSZB-LHR
RM 7,017

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Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

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