S$ 456 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 23-3. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Southeast Asia.
In the last 7 days, travellers have searched 41,299,237 times on KAYAK, and here's why:

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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

Singapore
Singapore1 stopS$ 604

Good to know

Low season

September

High season

December

Cheapest flight

S$ 456
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (26% more expensive on average)
Flight from London Heathrow Airport to Singapore

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: Singapore S$ 740 one-way - S$ 1,177 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 November.

Top 5 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 1331 reviews
7.7Food
8.6Crew
8.0Entertainment
8.0Comfort
8.2Boarding
Airline reviews

Everything was great keep up the good work 😁, can't ask for more.

10.0 Excellentselamat, Dec 2024LAX - SIN
Read more Singapore Airlines reviews

Everything was great keep up the good work 😁, can't ask for more.

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 staff on Singapore Airlines was incredible. I would like to commend LS Reuben from my SQ37 flight on November 19th, 2024, from LAX to Singapore, for his outstanding service and care. During the flight, one of my earbuds—brand new and valued at nearly $300—fell out and became lodged in the box controlling the in-flight entertainment system. I was understandably upset, but Reuben went above and beyond to assist me in this tough situation. Reuben demonstrated exceptional determination and empathy. Instead of suggesting we wait for an engineer, he immediately took action, spending almost 30 minutes searching for the earbud. He even got down on the floor to ensure it was recovered. His genuine concern and persistence made all the difference and turned a frustrating situation into one where I felt truly valued as a passenger. Reuben is a shining example of the remarkable service that sets Singapore Airlines apart. His dedication and willingness to go the extra mile left a lasting impression, and I want to sincerely thank him for his kindness and professionalism.

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

Overall, very good. The food was better than expected with the exception of the pork and potatoes dinner at the end of the flight. My family all selected that dish and did not set it. I tried a bite also and it was honestly terrible. Also, it would be helpful to know when the snacks in the back of the plane are available.

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.

Food option Hindu veg to Hindu non veg request was unheard

This flight was 16 hours and they made it very tolerable. Seats were comfortable and the staff very accommodating. I had plenty of inflight entertainment. Food was very good.

Service excellent would chose Singapore airlines as my first choice

Nothing special.. they could have provided something to eat without a charge

Terrible plane small airbus good for a 1 hr trip I booked business as it is. A night flight and 4hrs trip it was an ordinary economy seat with no one next to me what a joke what a stupid decision to buy business

better announcing at the gate prior to boarding and better organization of various gps

The plane was good - on time! But can the stewardesses smile or actually be nice - not to bark the commands

This time, I traveled in the economy, and it was surprisingly better than the eco-premium (food, comfort, and crew were noticeably worse in premium!)

I would recommend flying SWISS to anyone. Very impressed by the quality of food. The staff was extremely kind and accommodating. They arranged a shuttle to help a group of passengers make connecting flights when there was a delay.

Flight was cancelled due to technical problems with the aircraft. It would be nice if SWISS would invest in new aircraft; that would for sure minimize the technical issues with (old) aircrafts.

overall the flight was good and we were happy they waited for us. However, our luggage didn t make it and this caused us a lot of problems.

Flight was very full and we had to checkin our carry on. Stuff however promised us that our luggage will be the first one to come out and it did

Flight was diverted from Firenze to Pisa causing delay and inconvenience.

The plane was old Only 3 bathrooms available for economy The entertainment was old and the selection was poor

Georgian Airways check in staff initially denied us, because they thought passengers required transit visas to transfer on connecting flights. This required 70 minutes for them to call multiple people to confirm how transfers worked. They did not apologize once accepting our check in. Onboard, the four hour flight gave stale bread with spam slices as lunch. The only included drinks were still or sparkling water.

There was 2 hours delay before boarding and 2 hours delay after boarding while waiting in the plane

Very good crew. Food service above average. Seats very small for a 12 hours flight.

Boarding was a disaster being moved by Air France by bus to the plane. The plane should have been at the right gate.

They lost my baggage and I still have not got it back. Disgrace

They lost my lauggage and I STILL HAVE NOT RECEIVED IT. NO ONE IS HELPING! PLEASE HELP FIND MY LOST LAUGGAGE

A disaster. Air France is a real joke. They overcharge us customers for absolutely nothing. Service was very poor, food was mediocre, entertainment non existent, etc. We paid thousands of dollars for our business class tickets and then we were told in Paris we could not access its lounge. Really Air France ? Congratulations on irritating your customers to the sky high level and ensuring we will do everything in our power to discourage others to travel with you.

They again did not offer any functioning WiFi in the transatlantic crossing.

The first half from DC to Paris was very good and the staff were very helpful and humble BUT flight from Paris to Mumbai was sad. 1) it was packed. 2) no space on head compartment 3) crews were unresponsive to the calls 4) one crew member literally banged the bottle of water after giving me glass of water. A little water splashed on me and she was unapologetic 5) with so many hours of flight, little leg space should be taken care else don’t fill your airline till brim which affects your crew and they remove anger on us. 6) huge line for washrooms. 7) 2nd half journey was pathetic

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

I barely made the flight. We had to take a bus to the plane and the plane smelled awfully of body odor. When the flight attendant walked by she smelled of body odor. It was incredibly uncomfortable. Also my luggage did not make it onto this flight and when it finally arrived home the handle of the luggage was all ripped. I will have to purchase a bag again.

Crew were friendly and very helpful Plane was clean and the legroom is standard. Overall a good flight, no complaints.

I remember flying with Lufthansa many years ago, and it used to be an amazing airline with more technologically savvy and roomy planes, but unfortunately that isn’t the case anymore. The space between the seats is much smaller, which is ok for short flights, but definitely not for across the Atlantic flights. Not sure if I’ll opt for Lufthansa the next time, maybe just if necessary.

Seats are too close together, there is not enough legroom. Food was pretty bad. TV didn’t work for more than half the flight which was annoying. Crew was annoyed that I complained about the TV they shut down the system and it restarted but then froze again. Asked them again but they were annoyed only to shut it down again it worked for two hours then froze again.

No assistance as requested. Very late take off. Very hard landing And again , no assistance after landing

The connection to LYON was very tight. The flight was nearly finished boarding when we got to the gate

Mechanical problems had to be fixed after all the passengers were boarded, and kept on the plane for over close to two hours with no air conditioning. Did not have enough snacks for everyone to distribute. Also, the movie screen did not work and no-one seem to be interested in helping us fix the problem. And the last, two people from our family got severe food poisoning. Arrived Atlanta 4 hours later than estimated 2:35 pm landing time. Deeply disappointed in Lufthansa, since it has been one of our preferable air companies to fly with.

I did not like that they failed to put my luggage on my connecting flight to Athens. I was promised it would be located and delivered within 2 days but later told there was no information on its location. This caused me to have unplanned for expenses because I then had to purchase new clothing to wear on my vacation. I did not receive my luggage until my return flight home. I will not be traveling with them again.

I never made this flight but the staff helped to get me rebooked (see previous review)

The seat was very uncomfortable. It helped to use the foot rest. Could not sleep because of the seat.

The seats are incredibly uncomfortable. My luggage didn't make it on the flight from London to Nashville.

The plane itself is old and way overcrowded. The crew do a great job of trying to mitigate. It is just uncomfortable for over 8 hours, bearable, but barely. Boarding, and the baggage game, is ludicrous. Why charge extra to check bags when there is not enough room for everyone to "carry-on" and checking is needed? I do not think these issues would be different with other airlines, I believe it is the attitude that squeezes every penny out of each traveler.

Expected a lot better service paying for a business class seat. Seemed to be short on staff and did not get the service I expected.

Nice experience. Baggage arrival in Mumbai wasn't that quick and needs improvement.

I flew Club World and was SHOCKED at how totally absent the crew were for the duration of the flight. So much so that we received no drink service other than the post-departure cocktail and that was it. Wasn't even offered tea/coffee and the in-flight attention was so bad that literally minutes before landing the one crew member for our row was scrambling to pick up left-behind water bottles, glassware, trash. And the rest of the crew had already stowed all carts, he was cramming the trash into the lavatory trash can and was stashing the glassware frantically in the galley as we were on final approach. He was so scrambled he left two overhead lockers wide open (that he'd opened) for landing. Unbelievable!

Paid for first class and was surprised that the seats were the same in economy except no one was in the middle seat. I expected an actual first class seat.

The flight was several times changed. That was inconvenient, to sah the least.

They lost my special meal request and tried to tell me I didn't request it. I had the proof. Then they tried to get me to eat food I can't eat. No apologies

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.
3-3Mon
1 stopAir India
28h 45mLHR-SIN
24-3Mon
1 stopAir India
23h 15mSIN-LHR
S$ 604
4-3Tue
1 stopAir India
21h 50mLHR-SIN
13-3Thu
1 stopAir India
20h 30mSIN-LHR
S$ 647
14-1Tue
1 stopAir France
15h 20mLHR-SIN
20-1Mon
1 stopAir France
27h 25mSIN-LHR
S$ 774
22-1Wed
1 stopAir France
15h 20mLHR-SIN
2-2Sun
1 stopAir France
18h 35mSIN-LHR
S$ 782
23-1Thu
directBritish Airways
13h 00mLHR-SIN
27-1Mon
directBritish Airways
14h 25mSIN-LHR
S$ 882
19-5Mon
1 stopSingapore Airlines
24h 00mLHR-BKK
14-7Mon
1 stopSingapore Airlines
23h 40mBKK-LHR
S$ 1,041
25-2Tue
1 stopSingapore Airlines
24h 50mLHR-BKK
4-4Fri
1 stopSingapore Airlines
25h 35mBKK-LHR
S$ 1,060
17-3Mon
1 stopBritish Airways
14h 55mLHR-BKK
26-3Wed
1 stopBritish Airways
16h 50mBKK-LHR
S$ 1,084
1-4Tue
2 stopsSWISS
18h 30mLHR-HKT
14-4Mon
1 stopSWISS
16h 20mHKT-LHR
S$ 1,436
31-3Mon
1 stopSWISS
30h 50mLHR-HKT
22-4Tue
2 stopsSWISS
29h 50mHKT-LHR
S$ 1,514

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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.
23-3Sun
1 stop
29h 20mLHR-SIN
S$ 456
23-3Sun
1 stop
29h 20mLHR-SIN
S$ 457
23-3Sun
directSingapore Airlines
12h 50mLHR-SIN
S$ 497
21-3Fri
directSingapore Airlines
12h 50mLHR-SIN
S$ 501
25-2Tue
1 stopAir China
20h 15mLHR-SIN
S$ 548
18-1Sat
1 stopAir China
33h 20mLHR-SIN
S$ 549
24-4Thu
2 stopsLufthansa
15h 45mLHR-BKK
S$ 912
1-4Tue
2 stopsLufthansa
16h 45mLHR-BKK
S$ 966
3-1Fri
2 stopsSWISS
17h 35mLHR-HKT
S$ 1,455
30-12Mon
2 stopsSWISS
20h 40mLHR-BKK
S$ 6,013

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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.
25-12Wed
multi-stopAir France
26h 35mLHR-SIN
26-12Thu
multi-stopAir France
25h 40mSIN-LHR
S$ 1,264
24-12Tue
multi-stop
16h 30mLHR-SIN
28-12Sat
multi-stop
22h 50mSIN-LHR
S$ 1,278
23-12Mon
directBritish Airways
13h 15mLHR-SIN
26-1Sun
directBritish Airways
14h 25mSIN-LHR
S$ 1,455
24-12Tue
multi-stopLufthansa
21h 55mLHR-SIN
14-1Tue
multi-stopLufthansa
18h 50mSIN-LHR
S$ 1,551
25-12Wed
directBritish Airways
13h 00mLHR-SIN
28-1Tue
directBritish Airways
14h 25mSIN-LHR
S$ 1,559
24-12Tue
multi-stopLufthansa
19h 35mLHR-SIN
14-1Tue
multi-stopLufthansa
16h 20mSIN-LHR
S$ 1,647
24-12Tue
multi-stopSWISS
15h 15mLHR-SIN
13-1Mon
multi-stopSWISS
27h 10mSIN-LHR
S$ 1,748
24-12Tue
directSingapore Airlines
12h 50mLHR-SIN
14-1Tue
directSingapore Airlines
14h 25mSIN-LHR
S$ 1,804
25-12Wed
multi-stopSWISS
15h 15mLHR-SIN
30-12Mon
multi-stopSWISS
20h 55mSIN-LHR
S$ 1,820
26-12Thu
multi-stopSingapore Airlines
16h 20mLHR-BKK
24-1Fri
multi-stopSingapore Airlines
25h 25mBKK-LHR
S$ 2,168

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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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