Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from London to Southeast Asia from S$ 401

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Southeast Asia departing on 5-6. 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
Thu 6-6
Thu 13-6

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

In the last 7 days, travellers have searched 43,707,506 times on KAYAK, and here's why:

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.

Best Southeast Asia Flight Deals

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

Singapore
Singapore1 stopS$ 766

Good to know

Low season

September

High season

December

Cheapest flight

S$ 401
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (26% more expensive on average)
Flight from London Luton Airport to Singapore

FAQs - booking Southeast Asia flights

  • What airport should I fly to visit Mount Bromo in Indonesia?

    If you want to marvel this spectacular mountainscape of Bromo you need to fly into the Surabaya Juanda International Airport (SUB). There are no direct flights from London, but you can stop over at multiple destinations. From the airport you can either book with a travel guide or drive the 2-3 hour journey on the Surabaya-Pasuruan-Wonokitri-Mt Bromo route.

  • Can I sleep at the Noi Bai International Airport (HAN)?

    You can sleep overnight at the Noi Bai International Airport in their special sleeping pods for passengers who want a quick rest after a long flight. The pods are private and offer free Wi-Fi, comfy mattresses, and refreshments, and are located within the airport terminals.

  • Which airport do I fly into to visit Mui Ne?

    Southeast Asias best new beach destination is only a few hours from Ho Chi Minh City. You would need to fly into the Vietnam Tan Son Nhat International Airport (SGN) in the city and then find the best transport for your next step of the journey. You can hire a travel guide or your own car rental for this leg of the journey.

  • Which airport should I fly into to visit the Buddhist monuments of Bagan?

    You need to fly into Nyaung-U Airport (NYU) to access the Bagan Monuments. The flight will need a layover. This is the main airport that serves as the aerial gateway to the Bagan region.  

  • How does KAYAK find such low prices on flights from London 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 to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London 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 is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London 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 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

  • If you are flying from London to Southeast Asia, you will fly from one of the four main London Airports Heathrow (LGW), London City (LCY), and London Stansted (STN) or Gatwick (GTW). As the flight is a long-haul flight you should arrive at the airport 3 hours in advance and you can choose to make use of one of the many Business and VIP Lounges available to you. This is a good idea for some relaxation time and a good meal to prepare you for your onward journey.
  • If your journey from London stops at Singapore Airport Changi (SIN), you can make use of the BeRelax Spa to recover from your long flight. The spa is found at the airport and offers essential wellness and relaxation services like massages, facials and much more. This is the perfect after-flight treat to prepare you for your onward journey.
  • Depending on what destination in Southeast Asia you are flying to, there are multiple routes, stopovers and options, and if you are flying to one of the more remote islands you will probably need to have a connecting flight to the venue. The most popular airlines connecting visitors to Southeast Asia are Singapore Airlines, Etihad, Austrian Airlines, Malaysia Airlines and more. It all depends on your route and destination so click through KAYAK to find your best route.
  • If you are flying into Bangkok (BKK) and want to get a good night's rest after your long-haul flight there is a hotel at the airport grounds. The Novotel Bangkok Airport Hotel is connected to the airport terminal by a walkway and is easily accessible. You can also choose to use the hotel for a business meeting.
  • If you are flying from London into Kuala Lumpur International Airport (KUL), this is one of Southeast Asia’s busiest aviation hubs. After a long-haul flight you might need to relax and have a smoke, so you can luckily find designated smoking lounges at the Satellite Building located at the Mezzanine level 2, South Zone next to the China Air’s Lounge and North Zone next to Singapore Airlines Lounge.
See more tips

Top 5 airlines serving from London to Southeast Asia

 
Need help choosing which airline to fly with from London 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 1464 reviews
8.7Crew
8.4Boarding
8.2Entertainment
7.8Food
8.1Comfort
Airline reviews

My experience with Scoot is very good. Will have no issue flying with Scoot again.

8.0 ExcellentAnonymous, Apr 2024SIN - DPS
Read more about Singapore Airlines reviews

My experience with Scoot is very good. Will have no issue flying with Scoot again.

Good flight. Fiod was ready a bit late hence a hurry to finish before landing. Excellent crew and service

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

In general good, but the machine seems to be long in operation and some functions were restricted as e. g. Adjusting of seats.

Every thing was fine. Some ild classical Hindi movies should be add

The singapore airline now compared before covid, I like the service before covid. SQ was the best of all airlines but now I am going to look for different airline if I am travelling in asia.

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

They are great with every aspect of customer service. Helped my elderly father and aided him with using the restroom.

I did not like anything. Flight experience was bad overall.

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

All good- I love BA and the professionalism of the crew and pilots.

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

The flight was Finnair but there was no indications anywhere that the checkin was for Finnair also. There was no one to ask. I think at a minimum they should list the code shares so people don’t stand in the wrong line for an hour.

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Flight ok, but me and other two passengers didn’t have connection with the entertainment in our seats. So, no movies, no games, no music… for 9 hours. The crew just told us that there’s nothing they can do but I noticed during the flight that there were empty seats, so they could have offered to us to change seats. Customer service could be better.

Had a nice flight to London on BA will fly with them again in the future

Finnair cancelled my flight 12 hours prior to leaving for Helsinki. They stated there were mechanical problems. I had to scurry around to find a new flight that would meet my needs for arrival in Helsinki. Luckily I was able to find alternate transportation through Lufthansa/United.

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

Helpful steward. Allowed me to move to some empty seats and I was able to get some sleep. He also had milk for my tea. Americans don’t realise that cream or half and half ruin tea.

Flight was late and crew were unwilling to help with information on connections. Call light had been on for 61 minutes without tesponse.

Kudos to Swiss!! My wife and I thought Swiss was like flying years back: good food service, refreshments, friendly and courteous crew! We look forward to another trip to Europe next year, and it will be a priority to hopefully fly Swiss, thank you! We strongly can say from experience - the treatment (food, drink, entertainment) in service for Economy Class is unmatched!!!

SO disappointing. I spent so much money on this ticket, for them to cancel and not be able to rebook me in time. They were very unhelpful, and condescending throughout the whole Swiss airport. Will not be flying again.

I was pleasantly surprised with the whole experience. Thank you

There were multiple delays and the food was poor. Better food.

Thank you to the cordial crew and good hydration throughout the flight, food was good too. Carry ons usually weight by themselves so it does reduce option for cold weather clothes that are heavy, so carryon weight is tight.

Delay on take if- short connecting time- was supposed to have a wheelchair to connecting flight- limped with a cane thru the airport to make a connection

Crew took my carry on and checked it in; turned out to be a blessing; however the luggage was delayed at my final destination; receiving it 36 hours later. Thought, we'd get, at least water; but the Swiss chocolate was delicious. Thanks.

Cons: "Flight was completely full and certain passengers were belligerent about wearing face masks. The cabin crew did not enforce mask wearing, stating “we are not the police”"
Cons: "I fell sick and my doctor advised against flying. Tried calling Swiss Air and JustFly.com: 6 calls back and forth and 7 hours on hold, no help. Finally got advised on driving to the airport to make the flight change at the Swiss Air counter at O’Hare. The representative told me to bring a note from doctor to switch flights. I did the next day. The same representative looked me in the eye after advising the day before and said there’s nothing she could do. Why make an elderly sick person drive to the airport again if you know already you cannot help??Absolutely terrible experience, no help from the airline or travel agency. Total loss of the full price of the ticket."

Just happy I flew Qatar Airways awesome no wonder they are #1 in the world right now! The food was just delicious, very courteous, professional crew.

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 😊 🙏 😀 😉 👍

It was pretty good overall. I just wish the crew didn't have to interrupt you every five seconds to ask you if you wanted anything, I mean that's what the help button is for. When someone is tired and sleepy and still getting their bearings, turning on DND button is maybe not the first thing on their mind.

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

Ultimate customer care humble and excellent service oriented crew , perfect timing maintained by the crew . My profound appreciation.

Okay not so good or great. The flight operated by Indigo is worst from boarding to luggage handling and food. Damaged one luggage and delayed another luggage. Still did not get it, since 2 days.

I would advice everybody not to fly by Indigo, no entertainment in flight, rude behavior of staff, worst experience of my life

The flight from Doha to Mumbai with Indigo was worst in my whole life, I had booked tickets with Qatar, but still we had to fly by Indigo , worst flight

They ran out of some of the popular food items. 😞

Was unable to check in via app or website with supplied booking code (something to do with flight being operated by a partner airline, although the code didn’t work on the partner’s website either) Specified a vegetarian meal during booking, but that somehow wasn’t captured in airline’s system By the time flight crew got to my row, now vegetarian food was available. Had nothing to eat on flight from Philadelphia to Doha! Flight attendant was completely unconcerned and actively apathetic to the situation

My luggage never arrived to Zurich. They can't confirm when it will arrive

Late again. 3 out of 4 late. One cancelled flight and one lost bag.

Charged an extra 65 pounds for overweight suitcase, Not told how much overweight but had no choice but to pay the price. Compare to Delta Airlines where I flew internationally a few days before with this suitcase and no extra charge by Delta. Comfort was horrible. I am just under 6 feet tall, and good that the flight was only 1 1/2 hours, because my knees were in the seat back in front of me the whole flight. I felt that my knees were part way up to my chest. No reason to have the seats that close. I will say to the positive was the flight crew, very friendly and efficient.

The flight was delayed as they were waiting on catering. Catering. Was eventually delivered but they still had no food. No meals for us in business class - just a bag of nuts.

Our luggage is missing. We are at the Hotel Gran Via in Barcelona

Air hostess delayed providing food and then pulled away the tray before i finished eating

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.

Book cheap flights from London to Southeast Asia

Recent return flight deals

1-6Sat
1 stopAir China
21h 15mLGW-SIN
8-6Sat
1 stopAir China
20h 40mSIN-LGW
S$ 766
9-6Sun
1 stopAir China
21h 15mLGW-SIN
24-6Mon
1 stopAir China
28h 35mSIN-LGW
S$ 767
3-9Tue
1 stopFinnair
19h 25mLHR-SIN
19-9Thu
1 stopFinnair
29h 55mSIN-LHR
S$ 828
8-9Sun
1 stopSWISS
21h 40mLHR-BKK
6-10Sun
1 stopSWISS
33h 35mBKK-LHR
S$ 828
8-9Sun
1 stopSWISS
21h 40mLHR-BKK
1-10Tue
1 stopSWISS
25h 10mBKK-LHR
S$ 829
3-9Tue
1 stopFinnair
25h 15mLHR-SIN
20-9Fri
1 stopFinnair
24h 25mSIN-LHR
S$ 890
6-6Thu
directBritish Airways
13h 35mLHR-SIN
12-6Wed
directBritish Airways
14h 10mSIN-LHR
S$ 909
5-6Wed
directBritish Airways
13h 30mLHR-SIN
19-6Wed
directBritish Airways
14h 10mSIN-LHR
S$ 913
25-9Wed
directSingapore Airlines
13h 05mLHR-SIN
6-10Sun
directSingapore Airlines
13h 40mSIN-LHR
S$ 942
24-10Thu
directSingapore Airlines
13h 05mLHR-SIN
6-11Wed
directSingapore Airlines
14h 10mSIN-LHR
S$ 954

Search by stops

Search by airline

Search by price

Recent one-way flight deals

5-6Wed
1 stop
17h 35mLTN-SIN
S$ 401
5-6Wed
1 stop
17h 40mLGW-SIN
S$ 416
17-5Fri
directSingapore Airlines
13h 05mLHR-SIN
S$ 523
16-5Thu
directSingapore Airlines
13h 05mLHR-SIN
S$ 527
18-5Sat
directBritish Airways
13h 35mLHR-SIN
S$ 539
20-5Mon
directBritish Airways
13h 30mLHR-SIN
S$ 547
7-9Sat
1 stopSWISS
31h 35mLHR-BKK
S$ 634
8-9Sun
2 stopsSWISS
18h 45mLHR-BKK
S$ 708
22-8Thu
1 stopFinnair
19h 25mLHR-SIN
S$ 801
14-6Fri
2 stopsFinnair
25h 40mLHR-BKK
S$ 974

Search by stops

Search by airline

Search by price

Last minute flights from London to Southeast Asia

Last minute flight, train and bus deals

11-5Sat
multi-stopChina Southern
23h 15mLHR-SIN
24-5Fri
multi-stopChina Southern
36h 40mSIN-LHR
S$ 798
12-5Sun
multi-stopEtihad Airways
28h 50mLHR-SIN
1-7Mon
multi-stopEtihad Airways
25h 20mSIN-LHR
S$ 854
9-5Thu
directBritish Airways
13h 30mLHR-SIN
22-5Wed
directBritish Airways
14h 10mSIN-LHR
S$ 929
9-5Thu
directBritish Airways
13h 30mLHR-SIN
22-5Wed
directBritish Airways
14h 10mSIN-LHR
S$ 932
9-5Thu
multi-stopFinnair
17h 25mLHR-SIN
19-5Sun
multi-stopFinnair
18h 25mSIN-LHR
S$ 967
9-5Thu
multi-stopFinnair
17h 25mLHR-SIN
27-5Mon
multi-stopFinnair
18h 25mSIN-LHR
S$ 969
9-5Thu
directSingapore Airlines
13h 05mLHR-SIN
14-5Tue
directSingapore Airlines
13h 40mSIN-LHR
S$ 1,039
9-5Thu
directSingapore Airlines
13h 05mLHR-SIN
14-5Tue
directSingapore Airlines
13h 40mSIN-LHR
S$ 1,040
8-5Wed
multi-stopSWISS
13h 55mLHR-BKK
21-5Tue
multi-stopSWISS
14h 40mBKK-LHR
S$ 1,644
8-5Wed
multi-stopSWISS
18h 45mLHR-BKK
21-5Tue
multi-stopSWISS
14h 40mBKK-LHR
S$ 1,681

Search by stops

Search by airline

Search by price

Flights to Southeast Asia

Return flight deals:

Southeast Asia - London

Cabin classes:

S$ 288
S$ 367
S$ 51

Browse destinations:

  • Flights » 
  • Southeast Asia