฿11,544 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 7/9. 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.
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Best Southeast Asia Flight Deals from London

Cheapest return prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop฿21,339
Chiang Mai
Chiang Mai2 stops฿25,984
Phuket City
Phuket City2 stops฿25,411
Hat Yai
Hat Yai2 stops฿21,945
Krabi
Krabi2 stops฿20,699
Ko Samui
Ko Samui2 stops฿31,066
Chiang Rai
Chiang Rai2 stops฿21,608
Surat Thani
Surat Thani2 stops฿26,926
Bangkok
Bangkok1 stop฿21,339
Chiang Mai
Chiang Mai2 stops฿25,984
Phuket City
Phuket City2 stops฿25,411
Hat Yai
Hat Yai2 stops฿21,945
Krabi
Krabi2 stops฿20,699
Ko Samui
Ko Samui2 stops฿31,066
Chiang Rai
Chiang Rai2 stops฿21,608
Surat Thani
Surat Thani2 stops฿26,926

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

Fri 8 Jan - Fri 5 Mar
Air China Logo
17:40 - 18:05
LHR
-
BKK
17h 25m
1 stop
Air China Logo
00:20 - 17:50
BKK
-
LHR
24h 30m
1 stop
฿21,305Air China
Wed 6 Jan - Mon 1 Mar
Air China Logo
20:25 - 00:10
LHR
-
BKK
20h 45m
1 stop
Air China Logo
01:30 - 15:55
BKK
-
LHR
21h 25m
1 stop
฿21,305Air China
Mon 2 Nov - Mon 16 Nov
China Eastern Logo
17:00 - 17:50
LGW
-
BKK
17h 50m
1 stop
China Eastern Logo
13:35 - 06:30
BKK
-
LGW
23h 55m
1 stop
฿21,339China Eastern
Mon 26 Oct - Wed 4 Nov
Multiple Airlines Logo
09:50 - 10:10
LGW
-
BKK
17h 20m
1 stop
Multiple Airlines Logo
09:20 - 15:35
BKK
-
LGW
13h 15mdirect
฿21,339Multiple Airlines
Tue 20 Oct - Fri 30 Oct
โอมานแอร์ Logo
20:50 - 17:45
LHR
-
BKK
14h 55m
1 stop
โอมานแอร์ Logo
09:00 - 18:25
BKK
-
LHR
16h 25m
1 stop
฿22,248โอมานแอร์
Fri 16 Oct - Sat 14 Nov
โอมานแอร์ Logo
08:25 - 06:50
LHR
-
BKK
16h 25m
1 stop
โอมานแอร์ Logo
19:10 - 05:55
BKK
-
LHR
17h 45m
1 stop
฿22,248โอมานแอร์
Mon 5 Oct - Thu 26 Nov
เอทิฮัดแอร์เวย์ Logo
14:45 - 12:10
LHR
-
BKK
15h 25m
1 stop
เอทิฮัดแอร์เวย์ Logo
14:40 - 18:10
BKK
-
LHR
34h 30m
1 stop
฿23,829เอทิฮัดแอร์เวย์
Sat 22 Aug - Mon 7 Sep
เอทิฮัดแอร์เวย์ Logo
20:45 - 12:10
LHR
-
BKK
33h 25m
1 stop
เอทิฮัดแอร์เวย์ Logo
15:55 - 15:05
BKK
-
LHR
29h 10m
1 stop
฿23,998เอทิฮัดแอร์เวย์
Sat 22 Aug - Fri 18 Sep
บริติชแอร์เวย์ Logo
22:15 - 16:05
LGW
-
BKK
11h 50mdirect
บริติชแอร์เวย์ Logo
22:35 - 05:55
BKK
-
LGW
13h 20mdirect
฿25,277บริติชแอร์เวย์
Sat 22 Aug - Wed 16 Sep
บริติชแอร์เวย์ Logo
22:15 - 16:05
LGW
-
BKK
11h 50mdirect
บริติชแอร์เวย์ Logo
22:35 - 05:55
BKK
-
LGW
13h 20mdirect
฿25,277บริติชแอร์เวย์
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 5 days was to Bangkok, at ฿12,447 return. The most popular route is from London Heathrow Airport (LHR) to Bangkok Suvarnabhumi Airport (BKK), and the cheapest return airline ticket found on this route in the last 5 days was ฿30,961.

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 ฿34,447 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 ฿44,756.

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 ฿14,897, 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 ฿27,633 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is ฿45,976 and ฿42,072 respectively.

What’s the cheapest day of the week to fly from London to Southeast Asia?

The average price of all round-trip flights from London to Southeast Asia clicked on KAYAK for each day over the last 12 months.

When flying from London to Southeast Asia, you should consider leaving on a Saturday and avoid Thursdays if you are looking for the best rates. For your return to London, you’ll find the best rates on Sundays and the most expensive ones on Fridays.

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 11% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low season

September

Cheapest flight

฿11,544
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (30% more expensive on average)
Flight from London Gatwick Airport to Phuket City

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 แควนตัสแอร์เวย์
LHR
-
SIN
Sep 2024
Unless you’re flying Business or First Class, definitely take your own travel pillow - they make a difference.
OmarFlew with แควนตัสแอร์เวย์
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.

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.