332€ Find Cheap Flights from London to Southeast Asia – Compare and Save

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 04.09.. 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

 
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

Mon, 2. Nov - Fri, 13. Nov
Shenzhen Airlines Logo
21:10 - 2:15
LHR
-
BKK
22h 05m
1 stop
Shenzhen Airlines Logo
3:15 - 19:10
BKK
-
LHR
22h 55m
1 stop
540 €Shenzhen Airlines
Sat, 31. Oct - Thu, 20. May
China Eastern Logo
10:30 - 0:55
LGW
-
BKK
31h 25m
1 stop
China Eastern Logo
2:10 - 15:00
BKK
-
LGW
18h 50m
1 stop
540 €China Eastern
Mon, 2. Nov - Thu, 26. Nov
Shenzhen Airlines Logo
21:10 - 11:10
LHR
-
BKK
31h 00m
1 stop
Shenzhen Airlines Logo
12:10 - 19:10
BKK
-
LHR
38h 00m
1 stop
540 €Shenzhen Airlines
Fri, 26. Jun - Thu, 2. Jul
Condor Logo
10:20 - 12:35
LGW
-
BKK
20h 15m
1 stop
Condor Logo
22:35 - 14:45
BKK
-
LGW
22h 10m
1 stop
547 €Condor
Wed, 2. Sep - Thu, 10. Sep
Hainan Airlines Logo
22:00 - 10:00
LHR
-
BKK
30h 00m
1 stop
Hainan Airlines Logo
11:05 - 19:30
BKK
-
LHR
38h 25m
2 stops
591 €Hainan Airlines
Mon, 22. Jun - Sun, 28. Jun
Hainan Airlines Logo
22:00 - 10:00
LHR
-
BKK
30h 00m
2 stops
Hainan Airlines Logo
19:20 - 19:30
BKK
-
LHR
30h 10m
2 stops
597 €Hainan Airlines
Mon, 2. Nov - Mon, 16. Nov
Multiple Airlines Logo
17:10 - 23:25
LHR
-
CGK
23h 15m
2 stops
Multiple Airlines Logo
19:05 - 8:20
CGK
-
LHR
20h 15m
2 stops
671 €Multiple Airlines
Thu, 5. Nov - Sun, 6. Dec
SWISS Logo
20:05 - 23:25
LHR
-
CGK
44h 20m
2 stops
SWISS Logo
20:20 - 8:05
CGK
-
LHR
18h 45m
2 stops
674 €SWISS
Tue, 8. Sep - Tue, 29. Sep
SWISS Logo
18:35 - 17:10
LGW
-
SIN
15h 35m
1 stop
SWISS Logo
23:05 - 8:25
SIN
-
LGW
16h 20m
1 stop
675 €SWISS
Mon, 2. Nov - Mon, 16. Nov
Multiple Airlines Logo
18:40 - 23:25
LHR
-
CGK
21h 45m
2 stops
Multiple Airlines Logo
19:05 - 8:20
CGK
-
LHR
20h 15m
2 stops
675 €Multiple Airlines
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 549 € 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 7 days was 645 €.

What is the cheapest time of day to fly to Southeast Asia?

The average price for all round-trip flights from London to Southeast Asia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Southeast Asia is generally at night, when retur flights cost 842 € on average. The most expensive time of day to fly to Southeast Asia is generally in the morning, which is peak travel time and where the average cost of a ticket is 1.159 €.

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 366 €, 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 712 € (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is 1.178 € and 1.060 € 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 7 weeks before departure, which saves you about 12% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know - Cheap tickets from London to Southeast Asia

Low seasonSeptember
Cheapest flight332 €
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (34% more expensive on average)
Flight from London Gatwick Airport to Bangkok

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 3 airlines 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.
8,2
Singapore AirlinesOverall score based on 1543 reviews
8,0Comfort
8,1Entertainment
8,3Boarding
7,8Food
8,6Crew
Airline reviews

Food was terrible , uncomfortable seats, WiFi did not work, will never fly Singapore again.

2,0 MediocreAnonymous, May 2026
LAX - NRT
Read more Singapore Airlines reviews

Food was terrible , uncomfortable seats, WiFi did not work, will never fly Singapore again.

Really great service throughout and the food was really nice. I can highly recommend thank you very much.

A little more room from the reclining seat in the front of me.

I loved the full Taylor Swift selection but felt that the other selections were limited, didn’t span the popular music eras nor a wide enough range of music genres. BUT the seat and bed were GREAT (it was wide, long enough, had great storage, firm enough to uphold body postural comfort). Outstanding crew and really great food - gourmet innovative dim sum breakfast so different from the boring standard fare offered by many other business class products.

Crew is excellent Wifi needs to be improved in order to connect to the internet.

They ran out of the second choice of food was stuck with fish

Excellent service. I pre-ordered gluten intolerant meal and they handle it with care. They served me my meal before other people's to avoid crossed contamination. Thank you 🙏

I wish there was a little more leg room between the seats. The recline was good and seats overall were comfortable. I also didn’t like the 2-4-2 configuration.

The flight arrived on time. 2×2 seating meant no one needed to sit in the middle. This was a connectibf flight from Singapore and required going to 3 counters in different levels to check a golf bag

SQ service is great as always. However, the food quality seems to have gotten a lot worse recently.

This was my first time ever flying China Eatern and it will not be my last. I was very satisfied with my whole experience and trip. Thank you very much and until soon.

It was just fine. The sirlines did live up fully to my expectation.

The flight was delayed. The staff made us wait in the room that is too small and it was crowded and with no seats available for waiting. They did not tell us why the delay occurred.

While boarding at PVG, there was a ticket checking at the gate, then there was another ticket checking at the bottom of the escalator, which created quite a dangerous congestion. Not sure which idiot made this absolutely unnecessary arrangement.

While boarding at PVG, there was a ticket checking by the gate, then there was another ticket checking right at the bottom of the escalator, which created quite a dangerous congestion. Don't understand why the duplication?

I was traveling alone with an infant, so the crew was incredibly helpful. Both the international and subsequent domestic flights were impeccable.

Plane was good. But food was bad and air host was so rude. I will never fly with China Eastern again

The flight was delayed by 2 hours, although to their credit they delayed my connecting flight so people could reach it. Also their site is a nightmare to navigate on a phone. Everything else was good.

The ticket was last minute buy so no concerns about the pricing this time, but the crew in general could have been more accommodating, helpful.

CTU-KMG-CNX with 1.5 hr connection at KMG. Doable but just barely bc immigration exit from China is at the last flight leg, here: KMG to CNX. We hauled out of the domestic terminal to reenter at the international departures (luggage checked thru to CNX thankfully). Immigration had only two agents, even though KMG gets a HUGE number of foreigners. It took forever for such a shot line. Then security also took a while, so I just just made the connection. Recommend if you exit China with domestic international transfer, plan for 2+ hrs to avoid a heart attack. Airline personnel don’t suffer if you miss the flight, you do. Plan accordingly.

Very friendly and attentive flight attendants, good food service. Seat was comfortable. However, the in flight electronics were poor. The screen froze repeatedly; the controller died; the headphones are a hit or miss; the wifi wasn't usable. Very scarce communication before the flight (no email reminder). Almost impossible to understand in-flight communications (audio was very poor).

The meals were not the greatest and lacking of appetite but everything else was spot on

Overall, excellent: check-in, boarding, service, and food. The Business Class seating is a little less private and spacious than the world's premier airlines, but still very good for a long haul flight.

On time. Friendly and helpful flight attendants. The plane was clean. Having a wine available would have been nice.

Your staff was exceptional. Could teach the other airlines-rules on etiquette, and service. Excellent landings on flights, carried out by your pilots. Only complaint is long delay on return flight in Beijing, onto Vancouver.

Worst than I expected, crew was not attentive, meal was as disgusting , they didn’t even drink selections as they would to other passengers. I felt discriminated

cannot get seat information for LAX to IAH when check in in XI,AN

UA is ok. But check in was a very bad experience

I hate that you cannot check in online and when you are at the airport, there aren't any aisle seats left. Also, they could work a little on subtitles for their movies (not everyone is a native English speaker).

Nothing to complain of, the only reason I am not giving better marks is that I am used to flying with ANA and they are the top.

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.