$410 Find Cheap Flights from London 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 London to Southeast Asia departing on 11/5. 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

Search 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 23% 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 from London

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

Denpasar
Denpasar2 stops$1,080
Singapore
Singapore1 stop$851
Phuket City
Phuket City1 stop$1,028

Good to know

Low season

June

High season

December
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (30% more expensive on average)

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

Insights shared by verified travellers who flew the route from London 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

  • 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 from London 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 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 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 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 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

  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be January, November and December. The cheapest month to fly from London is May.
  • 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

 
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 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.
8.1
EmiratesOverall score based on 3276 reviews
8.1Boarding
8.2Entertainment
8.3Crew
8.0Comfort
7.9Food
Airline reviews

Excellent comfort and entertainment. Service poor..Food average with little choice.

8.0 ExcellentRoy, Jan 2025LGW - DXB
Read more Emirates reviews

Excellent comfort and entertainment. Service poor..Food average with little choice.

Comfort good. Service as usual poor. Cabin temperature as usual too cold, about 15 degrees

Seat 💺 was all the way on last row. Food was okay .

Poor flight aircraft very old Crew was friendly 1 person though

Emeritus is ***** Fly dubai is 0 we need better service for Fly Dubai

everything was great. I don't use on-board entertainment at all (I just read or sleep), but I appreciate that I couldn't hear anyone else's!

Flight was on time. Seats (economy) were very comfortable and food was excellent. The bad thing was that after landing it took an hour to reach arrivals. We had to wait 15mins to get off the plane and then had to board a bus which moved very slowly and took almost 30 minutes.

Some Crew were distinguishably fake in their interactions with passengers.

The food was amazing on our flight. So many options for movies and shows to stay entertained for 12 hours.

Okish. But for £550 , I’d have preferred a better experience

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.

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.

Great airline. Excellent service, good food & lots of TV movies/shows to choose from.

Really enjoyed the flight. Our flight attendant on the way back SIN-LAX was exceptional I didn’t get her name but she was so kind and went above and beyond to make sure I was comfortable. I had a bit of a panic attack and she checked on me a few times to make sure I was ok. Really appreciated her attention and service. Thank u

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.

On time boarding I would like to see ground hostess to help transit customers to direct them to the right terminal and boarding gate. Last night, all the transit customers on SQ484 arriving Singapore had to merry go round to look for terminal and boarding gate to board SQ128 transit to KL Malaysia. We went to Terminal 3 taking the Skytrain to T3 and back to T3 to get out to look for different Skytrain to T2. On arrival t2, we had to go round to ask which boarding gate to KL. We only had 5 minutes to make to the boarding time at 6:55pm but we already spent more than 30 minutes running around to find the boarding gate. We were late at the boarding gate.

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

Extremely bad food, they never gave our bags in time, the online check-in did not let us check in because we had Indian OCI not sure why we were given the option to check in then, because we couldn’t check in online we had to go in person and we were not able to change our seats and sit with our family

Should have had business class line in immigration. Food quality suboptimal

Likes: on time departure, new plane Didn’t like:very poor quality food, very limited entertainment.no amenity kit etc.

This flight was a dreamliner so I think the space was ok for the legs, but the option for food was again limited and the crew was same.

The seat was like there is no leg space....there were no proper option for food in the airline. It seemed like the airline was at brink of bankruptcy. The crew was helpful except for a few.

Needs better seat for business class. My seat was falling apart. Also no WiFi on that flight

The flight was delayed which cause me to miss my connecting flight in AbuDhsbi airport.

The business class experience is fantastic. The crew were polite but often unavailable even when I tried to call them! I even found myself bringing my used dishes and cutlery up to the crew because no one had come to collect it after over an hour.

Overall mediocre experience. Check in was good. They're were discriminatory. They were not attentive, food choices were not vegetarian friendly. The food served was frozen.

Good range of movies but lacking decent tv shows. Wifi was really expensive on this flight, considering flights under 7 hours have a $9.99 USD charge for streaming, to jump up to $24.99 for a 7 hour 40 flight seemed a little bit of a rip off. Staff are inattentive, and really need to improve on the customer experience. The new airport is fantastic, as is the new lounge, a huge upgrade from the old airport and lounge!

Communication between the captain/crew and the passengers needs to be improved.

Food and service are good. Bathroom was lack of lotions and cleaning. That should be improved.

Food & service very good next I will pick up again

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced. Also, a cabin bag allows only 5kg!

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced.

Everything was not satisfactory - the flight was delayed, staffs were ok but they didn't speak English well. I am from east Asia (not Chinese) and they didn't care enough to remember that I wasn't Chinese but persistently spoke chinese to me. The flight announcement in english wasn't clear to understand.

I wish I had been able to choose a vegetarian meal. Crew friendly and helpful. Seat was ok. All quite efficient and pleasant. Would recommend for inner China travel for sure.

The flight is not bad, but the Business Lounge is not big enough for the quantity of people they accept and there is a limited options for food and beverages.

It was simply bad and on top of that my luggage hasn't been delivered until now. They can't even localize it which is just unacceptable when they are supposed to scan the bar code they put when we check in

We bought premium Economy, thinking it would be more comfortable, but the seat is so narrow ,that my legs and feet are swollen , I can't wear shoes !

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.
12/3Wed
1 stopShenzhen Airlines
21h 55mLHR-BKK
15/3Sat
1 stopShenzhen Airlines
23h 05mBKK-LHR
$862
15/3Sat
1 stopAir China
31h 55mLHR-BKK
28/3Fri
1 stopAir China
23h 20mBKK-LHR
$870
26/3Wed
1 stopAir China
23h 30mLHR-BKK
9/4Wed
2 stopsAir China
22h 20mBKK-LHR
$885
23/3Sun
1 stopShenzhen Airlines
38h 20mLHR-BKK
30/3Sun
1 stopShenzhen Airlines
37h 40mBKK-LHR
$898
6/3Thu
1 stopEtihad Airways
19h 40mLHR-BKK
14/5Wed
1 stopEtihad Airways
18h 20mBKK-LHR
$1,101
6/3Thu
1 stopEtihad Airways
26h 40mLHR-BKK
15/5Thu
1 stopEtihad Airways
18h 20mBKK-LHR
$1,140
29/6Sun
1 stopBritish Airways
16h 05mLHR-BKK
8/7Tue
1 stopBritish Airways
18h 55mBKK-LHR
$1,319
8/3Sat
1 stopSingapore Airlines
24h 50mLHR-BKK
11/8Mon
1 stopSingapore Airlines
24h 30mBKK-LHR
$1,332
11/3Tue
1 stopEmirates
16h 40mSTN-KUL
25/3Tue
1 stopEmirates
25h 40mKUL-STN
$1,338
5/5Mon
1 stopEmirates
17h 40mSTN-KUL
25/5Sun
1 stopEmirates
17h 55mKUL-STN
$1,354

Search by stops

Search by airline

Search by price

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.
11/5Sun
2 stops
31h 50mLTN-KUL
$410
18/5Sun
2 stops
31h 50mLTN-KUL
$421
3/6Tue
2 stops
39h 20mLTN-KUL
$462
1/6Sun
2 stopsAir China
22h 30mLHR-BKK
$635
11/3Tue
1 stopEtihad Airways
15h 40mLHR-BKK
$643
15/5Thu
1 stopSingapore Airlines
27h 35mLHR-BKK
$649
1/6Sun
1 stopEtihad Airways
20h 00mLHR-BKK
$660
30/4Wed
1 stopSingapore Airlines
25h 35mLHR-BKK
$700
30/3Sun
1 stopEmirates
14h 10mLHR-BKK
$860
20/3Thu
1 stopEmirates
17h 40mSTN-KUL
$860

Search by stops

Search by airline

Search by price

Last minute flights from London 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-stopShenzhen Airlines
21h 55mLHR-BKK
25/3Tue
multi-stopShenzhen Airlines
30h 40mBKK-LHR
$1,028
26/2Wed
multi-stopOman Air
27h 40mLHR-BKK
12/3Wed
multi-stopOman Air
29h 20mBKK-LHR
$1,157
26/2Wed
multi-stopCathay Pacific
17h 30mLHR-BKK
7/3Fri
multi-stopCathay Pacific
18h 50mBKK-LHR
$1,231
26/2Wed
multi-stopSAUDIA
20h 40mLHR-BKK
8/3Sat
multi-stopSAUDIA
27h 55mBKK-LHR
$1,286
27/2Thu
multi-stopCathay Pacific
16h 50mLHR-BKK
26/3Wed
multi-stopCathay Pacific
27h 05mBKK-LHR
$1,294
27/2Thu
multi-stopEtihad Airways
21h 05mLHR-BKK
21/3Fri
multi-stopEtihad Airways
35h 30mBKK-LHR
$1,321
25/2Tue
multi-stopSAUDIA
21h 25mLHR-BKK
24/3Mon
multi-stopSAUDIA
29h 55mBKK-LHR
$1,355
25/2Tue
multi-stopEtihad Airways
21h 15mLHR-BKK
22/3Sat
multi-stopEtihad Airways
35h 30mBKK-LHR
$1,420
27/2Thu
multi-stopEmirates
22h 10mSTN-KUL
5/3Wed
multi-stopEmirates
18h 40mKUL-STN
$1,495
27/2Thu
multi-stopEmirates
24h 15mSTN-DPS
6/3Thu
multi-stopEmirates
25h 25mDPS-STN
$1,626

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Southeast Asia

Cabin class types available on flights to London

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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