288€ Find Cheap Flights from London to Southeast Asia – Compare and Save

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Cheap Flights from London to Southeast Asia

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Southeast Asia

Mon, 28. Sep - Sun, 11. Oct
China Southern Logo
22:10 - 23:00LHR  London Heathrow-HAN Hanoi Noibai
18h 50m1 stop Guangzhou Baiyun
China Southern Logo
8:15 - 19:20HAN  Hanoi Noibai-LHR London Heathrow
17h 05m1 stop Guangzhou Baiyun
482 €China Southern
Thu, 3. Dec - Sun, 13. Dec
China Southern Logo
9:50 - 19:00LGW  London Gatwick-BKK Bangkok Suvarnabhumi
26h 10m1 stop Guangzhou Baiyun
China Southern Logo
19:55 - 6:30BKK  Bangkok Suvarnabhumi-LGW London Gatwick
17h 35m1 stop Guangzhou Baiyun
483 €China Southern
Thu, 15. Oct - Sun, 25. Oct
Air China Logo
22:40 - 0:10LHR  London Heathrow-BKK Bangkok Suvarnabhumi
19h 30m1 stop Beijing Capital
Air China Logo
19:30 - 17:50BKK  Bangkok Suvarnabhumi-LHR London Heathrow
29h 20m1 stop Beijing Capital
483 €Air China
Tue, 1. Dec - Tue, 15. Dec
Air China Logo
21:30 - 12:30LHR  London Heathrow-BKK Bangkok Suvarnabhumi
32h 00m1 stop Chengdu Tianfu Intl
Air China Logo
19:30 - 15:55BKK  Bangkok Suvarnabhumi-LHR London Heathrow
27h 25m1 stop Beijing Capital
483 €Air China
Wed, 3. Feb - Thu, 4. Mar
Qatar Airways Logo
8:35 - 6:40LHR  London Heathrow-BKK Bangkok Suvarnabhumi
15h 05m1 stop Doha Hamad Intl
Qatar Airways Logo
9:05 - 21:55BKK  Bangkok Suvarnabhumi-LHR London Heathrow
19h 50m1 stop Doha Hamad Intl
735 €Qatar Airways
Mon, 1. Feb - Thu, 4. Mar
Qatar Airways Logo
14:55 - 13:05LHR  London Heathrow-BKK Bangkok Suvarnabhumi
15h 10m1 stop Doha Hamad Intl
Qatar Airways Logo
9:05 - 21:55BKK  Bangkok Suvarnabhumi-LHR London Heathrow
19h 50m1 stop Doha Hamad Intl
735 €Qatar Airways
Tue, 9. Feb - Thu, 25. Feb
Qatar Airways Logo
20:10 - 19:25LHR  London Heathrow-BKK Bangkok Suvarnabhumi
16h 15m1 stop Doha Hamad Intl
Qatar Airways Logo
8:15 - 21:55BKK  Bangkok Suvarnabhumi-LHR London Heathrow
20h 40m1 stop Doha Hamad Intl
735 €Qatar Airways
Sun, 25. Oct - Mon, 9. Nov
EVA Air Logo
21:20 - 16:00LHR  London Heathrow-BKK Bangkok Suvarnabhumi
11h 40mdirect
EVA Air Logo
12:40 - 19:05BKK  Bangkok Suvarnabhumi-LHR London Heathrow
13h 25mdirect
911 €EVA Air
Sat, 27. Feb - Thu, 11. Mar
EVA Air Logo
21:20 - 16:00LHR  London Heathrow-BKK Bangkok Suvarnabhumi
11h 40mdirect
EVA Air Logo
12:40 - 19:05BKK  Bangkok Suvarnabhumi-LHR London Heathrow
13h 25mdirect
917 €EVA Air
Fri, 27. Nov - Thu, 10. Dec
EVA Air Logo
21:20 - 16:00LHR  London Heathrow-BKK Bangkok Suvarnabhumi
11h 40mdirect
EVA Air Logo
12:40 - 19:05BKK  Bangkok Suvarnabhumi-LHR London Heathrow
13h 25mdirect
918 €EVA Air
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?

The cheapest ticket to Southeast Asia from London found in the last 5 days was to Bangkok, at 670 € return. The most popular route is from London Heathrow Airport (LHR) to Singapore (SIN), and the cheapest return airline ticket found on this route in the last 5 days was 853 €.

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

The cheapest time of day to fly to Southeast Asia is generally at night, when retur flights cost 832 € 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 1.188 €.

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

No, with an average price for the route of 380 €, prices are generally cheapest when you fly direct.

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

The cheapest month for flights from London to Southeast Asia is November, when tickets cost 701 € (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 1.069 € respectively.

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

To get a below-average price on a flight from London to Southeast Asia, you should book around 2 weeks before departure, which saves you about 6% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

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Good to know - Cheap tickets from London to Southeast Asia

Low season

September

Cheapest flight

288 €
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (33% 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-Jan 2025
It’s a long time sitting in that seat so sit on a cushion!
Verified travelerFlew with Qantas Airways-Sept 2024
Unless you’re flying Business or First Class, definitely take your own travel pillow - they make a difference.
OmarFlew with Qantas Airways-May 2024
Qantas lounge was crowded. try other One World lounges
Verified travelerFlew with Singapore Airlines-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

 
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
China EasternOverall score based on 236 reviews
7,2Comfort
7,8Crew
6,3Entertainment
6,9Food
7,6Boarding
Airline reviews

Broken business class seat which could not convert into a bed and had to switch to a narrower aisle seat to sleep

2,0 MediocreNathanael, Aug 2026
Read more China Eastern reviews

Broken business class seat which could not convert into a bed and had to switch to a narrower aisle seat to sleep

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.

2 parts to the journey. First leg covered in a newer plane with decent staff + POOR FOOD QUALITY but the second half didn’t leave a positive impression at all as the plane itself was an older built and the crew didn’t serve properly. Language is an issue with China Eastern flights as always, but unmotivated crew just makes it even bad.

Better good than most, if not all European airlines. If you’re stuck in an economy seat anyways, China Eastern is a good choice because of shorter flight time, being able to overfly Russia

For the price we paid, we had a really good flight. The seats and bed (business class) was extremely comfortable. I have no complaints. The crew were very attentive and helpful. They spoke English and there were no misunderstanding although their English wasn’t perfect or fluent. You will never go hungry as there was ample food and drinks but their food for mediocre. The entertainment was limited to older movies and the wifi didn’t allow you to access some Social media. Apart from the above, it was a very pleasant flight. Would highly recommend them.

Great staff and food. Seats pretty uncomfortable but plenty of legroom. Entertainment system outdated.

Gatwick London-Shanghai -Bangkok.. Would have liked entertainment screens, but I know these planes are not that new. Cheap flights at the time of booking, Emirates wanted double so you get what you paid for. I would fly again with them, but if Emirates was the same price I would go with them.

Flight was fine, however we were not able to check in online, this adds to travel stress. Luckily check-in at Heathrow was quick, but we did not get the seats we paid extra for. We paid for a window and 2 aisle seats from Shanghai to Tokyo leg, but they changed us to middle seats. Not good :(

2 hours delay on the 1st plane out of the day!!!!!

Multiple delays, with no explanation. Caused us to almost miss our connector. The airline made no effort when we arrived in Shanghai to help us make it to our next flight with the same airline.

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