₹ 400 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 Heathrow to Southeast Asia departing on 21/11. 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

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 Heathrow to Southeast Asia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Denpasar
Denpasar2 stops₹ 65,133
Singapore
Singapore1 stop₹ 54,307
Port Blair
Port Blair2 stops₹ 55,106
Manila
Manila1 stop₹ 58,922
Denpasar
Denpasar2 stops₹ 65,133
Singapore
Singapore1 stop₹ 54,307
Port Blair
Port Blair2 stops₹ 55,106
Manila
Manila1 stop₹ 58,922

Book Cheap Heathrow 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 Heathrow 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 Heathrow to Southeast Asia

pon., 10 lis - wt., 25 lis
Multiple Airlines Logo
16:40 - 17:25LHR-SIN
16h 45m1 stop
Multiple Airlines Logo
00:05 - 08:05SIN-LHR
16h 00m1 stop
₹ 54,307Multiple Airlines
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pon., 3 lis - pon., 17 lis
Etihad Airways Logo
19:20 - 09:35LHR-SIN
30h 15m1 stop
Etihad Airways Logo
19:25 - 12:05SIN-LHR
24h 40m1 stop
₹ 54,396Etihad Airways
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pt., 13 mar - śr., 25 mar
Lufthansa Logo
17:50 - 17:25LHR-SIN
15h 35m1 stop
Lufthansa Logo
23:55 - 08:45SIN-LHR
16h 50m1 stop
₹ 54,485Lufthansa
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czw., 19 mar - pon., 23 mar
Lufthansa Logo
13:50 - 17:25LHR-SIN
19h 35m1 stop
Lufthansa Logo
23:55 - 08:45SIN-LHR
16h 50m1 stop
₹ 54,574Lufthansa
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ndz., 9 lis - sob., 15 lis
Air India Logo
20:30 - 09:25LHR-IXZ
31h 25m2 stops
Air India Logo
09:40 - 19:30IXZ-LHR
15h 20m1 stop
₹ 55,106Air India
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ndz., 9 lis - sob., 15 lis
Air India Logo
21:05 - 09:10LHR-IXZ
30h 35m1 stop
Air India Logo
09:40 - 19:30IXZ-LHR
15h 20m1 stop
₹ 55,461Air India
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ndz., 2 lis - pt., 14 lis
Etihad Airways Logo
20:55 - 09:35LHR-SIN
28h 40m1 stop
Etihad Airways Logo
19:25 - 06:40SIN-LHR
19h 15m1 stop
₹ 55,461Etihad Airways
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czw., 5 lut - czw., 19 lut
Finnair Logo
07:30 - 18:40LHR-SIN
27h 10m1 stop
Finnair Logo
22:05 - 09:10SIN-LHR
19h 05m1 stop
₹ 55,816Finnair
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czw., 13 lis - czw., 27 lis
Finnair Logo
16:15 - 18:40LHR-SIN
18h 25m1 stop
Finnair Logo
22:05 - 09:10SIN-LHR
19h 05m1 stop
₹ 55,905Finnair
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czw., 19 mar - ndz., 22 mar
SWISS Logo
17:10 - 18:00LHR-SIN
16h 50m1 stop
SWISS Logo
00:05 - 13:00SIN-LHR
20h 55m1 stop
₹ 56,171SWISS
Find Deal
Booking Insights

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

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

What is the cheapest London Heathrow Airport 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 Heathrow Airport found in the last 72 hours was to Bangkok, at ₹ 85,829 return. The most popular route is from London Heathrow Airport (LHR) to Bangkok Suvarnabhumi Airport (BKK), and the cheapest round-trip airline ticket found on this route in the last 72 hours was ₹ 85,829.

Can I save money by flying with a stopover from London Heathrow Airport 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 ₹ 61,129, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport to Southeast Asia is September, when tickets cost ₹ 72,587 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of return tickets is ₹ 108,792 and ₹ 108,792 respectively.

How far in advance should I book a flight from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport to Southeast Asia, you should book around 7 weeks before departure, which saves you about 10% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight₹ 35,495
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (30% more expensive on average)
Flight from London to Singapore

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

Insights shared by verified travellers who flew the route from Heathrow 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.
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

  • 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.

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

    The cheapest time of day to fly to Southeast Asia is generally in the evening, when retur flights cost ₹ 70,590 on average. Morning departures are around 35% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Asia is generally at night, which is peak travel time and where the average cost of a ticket is ₹ 114,984.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

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