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Find cheap flights from London Heathrow Airport to Southeast Asia from $617

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 19/6. 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
Sun 2/6
Sun 9/6

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Best Southeast Asia Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours

Singapore
Singapore1 stop$943

Good to know

Low season

August

High season

December
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly (24% more expensive on average)

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 to Southeast Asia from London Heathrow Airport 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 to Southeast Asia with an airline and back to London Heathrow Airport 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 to Southeast Asia from London Heathrow Airport 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 $1,079 one-way - $1,784 round-trip; Singapore $1,089 one-way - $1,771 round-trip

Top 5 airlines serving from Heathrow to Southeast Asia

 
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.
8.2
Singapore AirlinesOverall score based on 1470 reviews
8.4Boarding
8.2Entertainment
7.8Food
8.7Crew
8.1Comfort
Airline reviews

Great to have actual hot tastey meal on a flight. Well done

10.0 ExcellentJeff, Apr 2024SIN - MNL
Read more about Singapore Airlines reviews

Great to have actual hot tastey meal on a flight. Well done

All in all the flight was good. Love the fact that for airline food it was piping hot

Awesome as always. I wish though the cabin for premium was upgraded.... Same old sane old :(

Wonderful service, planes and interior in great condition, very pleasant experience

Flying with Singapore airlines is always excelllent - the crew are lovely and the food too is great. It’s my number 1 airline

Perfect experience from boarding through to leaving the flight, comfortable and personalised service from all staff, highly recommended

They were able to assist my elderly father and myself after not being able to check in to scoot. The counter service was phenomenal. They did what they could to get us on the next plane so we could catch our Connecting flight. Scoot closed early on us so we ended up missing our flight.

The stewardess was very helpful all the way. My seat had an issue with headphones and after the replaced and gave me a new pair and noticed it was the seat I got a new chair to sit and a great ride back home

The seat comfort, the food and of course the crew, they made you feel welcome and relaxed 😊

The overall operation needs to be improved. The in-flight services took forever and sometimes ran out of options.

Don't be afraid if you board an Oman Air Airbus A330 - it will take you to Colombo and not Muskat. The Aircraft is leased by Qatar Airways ;-)

No towels or tissue and chocolate and mint provided before arrival

Not good. Expected a lot more as far as excellence.

I staff or crew they were very friendly and humbly, they done theirs service very well, I appreciate them and thank you to the company or Qatar 🇶🇦 Government for providing as good service in their flight ,once again, thank you 😊 🙏 😀 😉 👍

Fantastic, the 787-9 is a very beautifully designed plane and it was a pleasure to fly in the Qsuite. The suite did feel slightly smaller than the 777 variant, and the suite door also felt smaller, as I felt more exposed as passengers and crew walked past. Food was too notch, and the service was fantastic. I wish they’d enforce boarding zones more effectively, but otherwise they did really well.

To many ads. 3 or 4 between each movie. All repetitive, all related to Doha which I was just passing thru.

My seat that I booked over a year ago and some other passenger was sitting in it. They said they could not walk and they would not move. I was with my young kid and the crew did nothing to accommodate that. Just disappointed that the airline accepts that excuse from a passenger.

Crews are very rude and unhelpful. Cramped seats in economy. Foods are useless

Better service is needed. I booked for Qatar but I was switched to American way after I bought my tickets.

Lovely aircraft and I flight entertainment. Good leg room. Full flight crew struggled a bit

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

The cabin was quite noisy as there were lots of children travelling for the school holidays. Found the selection of movies limited.

Delayed, not enough information. Had to ask for refreshments, crew could have been more proactive

The best so far coz this time it was all male steward on the economy cluster. They were polite, efficient & genuinely courteous. They do not judge you when you ask for more food & peanuts.

Delayed for 45 minutes. Don't know what's the issue. Other than that, food was not to my satisfaction. However it's okay.

My first course flight (Aor-Kul) was cancelled in the morning, and they asked me to board the night flight hence I need to transit overnight for the 2nd flight (Kul-Myy) that supposed to be on the same day. The overnight stay was not provided, (I'm traveling with my spouse, a daughter (5 y.o.) and an infant (2 months old). Hence I booked Sama Sama Hotel at my own expense (fortunately using my enrich miles points). Other than this issue, all services is good.

My experience with the flight was okay. My experience checking in was absolutely terrible. I was told I needed to change my e-ticket number to check in because I missed my flight in PDX. Even when shown the itinerary, they didn't budge and sent me to KLM across the airport. KLM wasn't open until 8pm and my flight was at 7:30pm. Nobody made accommodations in any way to get me to KUL. To add insult to injury, they rescheduled my flight to the very next day, creating a very long layover and did not offer any hotel stay. After this, even worse, I found out later they delayed the first 7:30pm flight to 9:10pm. Meaning, I could have still boarded but they refused to even try to get me on the plane. As a result, I missed a day of work and lost pay for the day. Also, when I went to get my luggage, it wasn't there. It was STILL in Singapore. They had from 5:30pm to 5am to get my luggage onto the plane and they still couldn't get that right. This is the worst experience I've had flying anywhere in the past decade I've been travelling.

Orange juice change to mineral water . Should keep the orange juice.

No recognition for one World Emerald member. Business class seat has flat bed

No recognition for one World Emerald member. I got row 1 in business class and it was pathetic. No leg space, cramped space, less recline

Comfortable seats. Be aware there is no alcohol on this airline.

Seats were comfortable. Be aware there is no alcohol on this airline.

Every thing was very food except the meal. It was a sandwich of something like a beef kebab. It was really bad in terms of hardness as well as taste. We were a family of 7 persons non of us could eat it his sandwich. Cake was good.

It was very nice flight only suggestions to upload recent videos and English subtitles. Thanks

Wheelchair service is not available right away on Kuwait Airways

Everybody was so nice to treat me good all the workers When I came to Bangladesh there was just a little problem with the luggage but I got my luggage it took like two hours Other than that everything is good

Food quality should be upgrade. Plastic spoons looks like not good as well as food quality not up to the mark.

Everything was great specially the seats was comfortable even I was in the economy and the food was really Great👍

Not much on entertainment, food was good but not delicious, flight was on time

The crew was attentive and kind. The business class cabin wasn’t very full during the flight so the service was catered to your specific needs.

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The flight was on time and the crew very professional. Everything went as expected and I will use BA again for this trip.

We paid to have overhead carry-on baggage. When we got to the gate we were told that our carry on bags would need to be checked and go below because the flight was full. Notably we were nowhere near the last people to board and about 30 other passengers also had to check their carry-on bags. Other than that the flight was fine.

Very bad plain although I paid A business class ticket I was stuck in a stiff fixed seat without any entertainment or Wi Fi for 5 hours I will never ever book a flight on British airline.

Self check in Kiosk did not recognize that I had prepaid for my luggage. This caused a 40 minute delay even though I had my British Airways email receipt for the prepaid luggage.

Crew were very friendly and helpful. They explained to us in detail the delay in our takeoff due to the storm that rolled in from Belfast and did their best to make up the time. Always great to fly BA!

Staff were very helpful. The free WiFi for messages was also very useful to keep in touch

Crew was more interested on looking at their phones than welcoming passengers during boarding.

The crew was very attentive and kept busy serving a variety of treats!

Terrible. Missed my flight to final destination because of delayed British Airways flight. Had to spend 12 hours in airport and $1500 for new plane tickets

Book cheap flights from London to Southeast Asia

Recent return flight deals

21/5Tue
1 stopAir China
36h 40mLHR-KUL
13/6Thu
1 stopAir China
27h 20mKUL-LHR
$862
30/5Thu
1 stopAir China
36h 40mLHR-KUL
5/6Wed
1 stopAir China
26h 50mKUL-LHR
$863
1/6Sat
directBritish Airways
13h 30mLHR-SIN
19/6Wed
directBritish Airways
14h 10mSIN-LHR
$1,077
15/5Wed
directBritish Airways
13h 30mLHR-SIN
26/5Sun
directBritish Airways
14h 10mSIN-LHR
$1,079
12/5Sun
1 stopQatar Airways
14h 10mLHR-BKK
12/6Wed
1 stopQatar Airways
14h 55mBKK-LHR
$1,103
12/5Sun
1 stopQatar Airways
14h 10mLHR-BKK
11/6Tue
1 stopQatar Airways
16h 30mBKK-LHR
$1,106
12/9Thu
1 stopSingapore Airlines
15h 40mLHR-KUL
7/10Mon
1 stopSingapore Airlines
15h 50mKUL-LHR
$1,227
15/10Tue
directSingapore Airlines
13h 05mLHR-SIN
15/12Sun
directSingapore Airlines
14h 20mSIN-LHR
$1,241
5/9Thu
directMalaysia Airlines
13h 15mLHR-KUL
30/9Mon
directMalaysia Airlines
13h 45mKUL-LHR
$1,461
10/9Tue
directMalaysia Airlines
13h 15mLHR-KUL
7/10Mon
directMalaysia Airlines
13h 25mKUL-LHR
$1,462

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Recent one-way flight deals

19/6Wed
1 stopShenzhen Airlines
24h 55mLHR-KUL
$617
12/6Wed
1 stopShenzhen Airlines
31h 35mLHR-BKK
$619
3/6Mon
1 stopShenzhen Airlines
22h 15mLHR-BKK
$620
14/5Tue
directBritish Airways
13h 35mLHR-SIN
$630
11/5Sat
1 stopSingapore Airlines
17h 00mLHR-DPS
$889
25/10Fri
1 stopMalaysia Airlines
19h 30mLHR-BKK
$932
8/10Tue
directMalaysia Airlines
13h 15mLHR-KUL
$954
13/6Thu
directBritish Airways
13h 35mLHR-SIN
$957
12/7Fri
1 stopQatar Airways
17h 40mLHR-KUL
$1,320
9/8Fri
directSingapore Airlines
13h 05mLHR-SIN
$1,435

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Last minute flights from Heathrow to Southeast Asia

Last minute flight, train and bus deals

5/5Sun
multi-stopKLM
21h 00mLHR-BKK
24/5Fri
multi-stopKLM
25h 35mBKK-LHR
$1,019
6/5Mon
multi-stopOman Air
27h 30mLHR-BKK
16/5Thu
multi-stopOman Air
28h 30mBKK-LHR
$1,032
8/5Wed
multi-stopShenzhen Airlines
22h 10mLHR-BKK
4/6Tue
multi-stopShenzhen Airlines
22h 45mBKK-LHR
$1,041
5/5Sun
multi-stopKuwait Airways
17h 00mLHR-BKK
30/5Thu
multi-stopKuwait Airways
17h 35mBKK-LHR
$1,381
4/5Sat
directSingapore Airlines
13h 05mLHR-SIN
6/9Fri
directSingapore Airlines
13h 40mSIN-LHR
$1,469
4/5Sat
directBritish Airways
13h 35mLHR-SIN
5/9Thu
directBritish Airways
14h 10mSIN-LHR
$1,537
8/5Wed
multi-stopMalaysia Airlines
21h 30mLHR-DPS
6/6Thu
multi-stopMalaysia Airlines
28h 15mDPS-LHR
$1,548
8/5Wed
multi-stopMalaysia Airlines
24h 30mLHR-DPS
8/6Sat
multi-stopMalaysia Airlines
28h 15mDPS-LHR
$1,577
7/5Tue
directSingapore Airlines
13h 05mLHR-SIN
22/7Mon
directSingapore Airlines
13h 35mSIN-LHR
$1,945
4/5Sat
directBritish Airways
13h 35mLHR-SIN
5/9Thu
multi-stopBritish Airways
17h 45mSIN-LHR
$2,022

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London Heathrow Airport - Southeast Asia Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

Southeast Asia - London Heathrow Airport

Cabin classes:

$6,223
$458
$278
$122

Browse origins:

  • Flights » 
  • London » 
  • London Heathrow Airport

Browse destinations:

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  • Worldwide » 
  • Southeast Asia