$580 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 7/6. 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
1 adult, Economy, 0 bags

KAYAK searches 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
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Cheap Flights from London to Southeast Asia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Denpasar
Denpasar1 stop$1,166
Singapore
Singapore1 stop$989
Phuket City
Phuket City1 stop$957
Denpasar
Denpasar1 stop$1,166
Singapore
Singapore1 stop$989
Phuket City
Phuket City1 stop$957

Book Cheap London to Southeast Asia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Southeast Asia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Southeast Asia

Wed, 13 May - Fri, 12 Jun
Turkish Airlines Logo
10:50 - 08:10
STN
-
KUL
38h 20m
1 stop
Turkish Airlines Logo
09:50 - 09:55
KUL
-
STN
31h 05m
1 stop
$1,235Turkish Airlines
Tue, 23 Jun - Mon, 29 Jun
Turkish Airlines Logo
06:55 - 08:10
STN
-
KUL
18h 15m
1 stop
Turkish Airlines Logo
09:50 - 22:10
KUL
-
STN
19h 20m
1 stop
$1,305Turkish Airlines
Wed, 9 Sep - Wed, 23 Sep
KLM Logo
09:20 - 14:05
LCY
-
HKT
22h 45m
2 stops
KLM Logo
07:35 - 07:55
HKT
-
LCY
30h 20m
2 stops
$1,394KLM
Tue, 6 Oct - Mon, 19 Oct
KLM Logo
09:20 - 14:05
LCY
-
HKT
22h 45m
2 stops
KLM Logo
18:05 - 09:30
HKT
-
LCY
21h 25m
2 stops
$1,408KLM
Sat, 6 Jun - Wed, 17 Jun
Multiple Airlines Logo
16:50 - 10:20
STN
-
DPS
34h 30m
2 stops
Multiple Airlines Logo
18:00 - 21:55
DPS
-
STN
34h 55m
3 stops
$1,418Multiple Airlines
Tue, 16 Jun - Tue, 23 Jun
Emirates Logo
21:05 - 22:25
STN
-
DPS
18h 20m
1 stop
Emirates Logo
19:45 - 12:55
DPS
-
STN
24h 10m
1 stop
$1,446Emirates
Sun, 31 May - Mon, 15 Jun
Emirates Logo
21:05 - 22:25
STN
-
DPS
18h 20m
1 stop
Emirates Logo
00:35 - 18:45
DPS
-
STN
25h 10m
1 stop
$1,457Emirates
Wed, 10 Jun - Wed, 17 Jun
Multiple Airlines Logo
09:15 - 22:20
LCY
-
DPS
30h 05m
2 stops
Multiple Airlines Logo
14:55 - 08:40
DPS
-
LCY
24h 45m
2 stops
$1,485Multiple Airlines
Wed, 16 Sep - Wed, 30 Sep
SWISS Logo
13:10 - 00:10
LCY
-
DPS
28h 00m
2 stops
SWISS Logo
13:15 - 12:35
DPS
-
LCY
30h 20m
2 stops
$1,729SWISS
Tue, 22 Sep - Wed, 30 Sep
SWISS Logo
13:10 - 00:10
LCY
-
DPS
28h 00m
2 stops
SWISS Logo
13:15 - 08:40
DPS
-
LCY
26h 25m
2 stops
$1,735SWISS
Booking Insights

KAYAK's insights & trends for London to Southeast Asia flights

Get data-powered insights and trends into flights from London to Southeast Asia to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest London to Southeast Asia flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Southeast Asia from London found in the last 72 hours was to Bangkok, at $1,049 return. The most popular route is from London Heathrow Airport (LHR) to Singapore (SIN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $1,218.

Can I save money by flying with a stopover from London to Southeast Asia?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $538, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from London to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Southeast Asia is November, when tickets cost $1,131 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $1,921 and $1,743 respectively.

How far in advance should I book a flight from London to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London to Southeast Asia, you should book around 4 weeks before departure, which saves you about 15% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonSeptember
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (32% 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 Airlines
LHR
-
SIN
Jan 2025
It’s a long time sitting in that seat so sit on a cushion!
Verified travelerFlew with Qantas Airways
LHR
-
SIN
Sept 2024
Unless you’re flying Business or First Class, definitely take your own travel pillow - they make a difference.
OmarFlew with Qantas Airways
LHR
-
SIN
May 2024
Qantas lounge was crowded. try other One World lounges
Verified travelerFlew with Singapore Airlines
LHR
-
SIN
Feb 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.

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.

Reviews of the top airline flying 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.
7.3
Etihad AirwaysOverall score based on 1434 reviews
7.2Entertainment
7.6Boarding
7.3Comfort
7.8Crew
7.2Food
Airline reviews

I booked tickets for a family of five and specifically paid extra to select our seats together. We spent nearly $1,000 extra (around $100 per seat) for extra legroom so we could sit near each other. However, despite paying for this, we ended up being separated on the flight. This caused a major issue for our family because my parents do not speak English and rely on me to translate and assist them during the journey. I do not understand why Etihad changed our reserved seats without explanation. I am extremely dissatisfied with this experience. I expect the airline to do better, and I am requesting a full refund for the seat selection fees we paid.

2.0 MediocreRBLX, Apr 2026
LHR - AUH
Read more Etihad Airways reviews

I booked tickets for a family of five and specifically paid extra to select our seats together. We spent nearly $1,000 extra (around $100 per seat) for extra legroom so we could sit near each other. However, despite paying for this, we ended up being separated on the flight. This caused a major issue for our family because my parents do not speak English and rely on me to translate and assist them during the journey. I do not understand why Etihad changed our reserved seats without explanation. I am extremely dissatisfied with this experience. I expect the airline to do better, and I am requesting a full refund for the seat selection fees we paid.

Limit the number of usage of wine or please arrange our seats. The passenger was drunk on this flight and not on Thiruvananthapuram to Abudhabi.

1 hour delay meant missed my connecting flight and 1st day of holiday

The seats seemed smaller than other business class offerings. The entertainment menu was limited. Flight crew was good.

Business class ticket should include lounge access and seat selection. The food quality and varieties should be more. It was surpirise that no dessert was offered.

Dear Team, I purchased a full travel package that included 2 checked bags through you and JustFly. However, when I arrived at the airport, my ticket showed 0 checked bags. Since I was traveling internationally to India with 2 bags, It was a $200 per bag at the counter, which was extremely disappointing. For an international trip, why would I ever choose a no‑bag option for only $20–$30 less? This seems like an error in the booking process, and I am requesting clarification and a resolution. I have called JustFly and on phone for 1 hr :53 min and they couldn't help till I show some kind of proof etc which isn't possible but besides that love your service and using it for years !

Early arrival. Good boarding. Deplaning this flight is very slow both coming and going. Baggage arrived quickly for Pearson

Good flight. There were a few issues with the flat bed. It was some technical issues. Otherwise everything was good

It was great! Kept the time. Provided what was promised

It was mediocre. Honestly, the flight was late but that didn’t bother me as I had plenty of time. The only thing that bothered me is that the crew never asked to make the beds for us in business class. Maybe the crew was exhausted and that just didn’t occur to them.

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.