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Cheap flights from London Heathrow Airport to Southeast Asia from ₹ 41,435

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
7 Jul — 14 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Southeast Asia
Explore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 June 2026.

Wed 24/610:00
LHR
-
SIN
1 stop19h 45m
Gulf Air
Wed 8/720:00
SIN
-
LHR
1 stop17h 55m
Gulf Air
Deal found 2/6₹ 72,677
Wed 3/618:10
LHR
-
SIN
1 stop17h 20m
Finnair
Sun 28/621:35
SIN
-
LHR
1 stop30h 05m
Finnair
Deal found 3/6₹ 72,868
Thu 19/1118:40
LHR
-
SIN
1 stop15h 25m
Multiple Airlines
Tue 1/1223:45
SIN
-
LHR
1 stop16h 20m
Multiple Airlines
Deal found 3/6₹ 72,963
Wed 10/622:05
LHR
-
SIN
1 stop31h 15m
Shenzhen Airlines
Tue 7/718:10
SIN
-
LHR
1 stop32h 50m
Shenzhen Airlines
Deal found 2/6₹ 73,153
Fri 30/1021:10
LHR
-
SIN
1 stop36h 20m
Shenzhen Airlines
Sun 15/1118:30
SIN
-
LHR
1 stop32h 40m
Shenzhen Airlines
Deal found 3/6₹ 73,249
Thu 11/622:05
LHR
-
SIN
1 stop31h 40m
Gulf Air
Wed 8/720:00
SIN
-
LHR
1 stop26h 20m
Gulf Air
Deal found 2/6₹ 73,344
Sun 7/622:05
LHR
-
SIN
1 stop31h 40m
Gulf Air
Tue 7/720:00
SIN
-
LHR
1 stop26h 20m
Gulf Air
Deal found 2/6₹ 73,915
Mon 8/610:00
LHR
-
SIN
1 stop19h 45m
Gulf Air
Wed 8/720:00
SIN
-
LHR
1 stop17h 55m
Gulf Air
Deal found 3/6₹ 74,011
Sat 14/1118:40
LHR
-
SIN
1 stop15h 25m
Multiple Airlines
Mon 30/1123:55
SIN
-
LHR
1 stop17h 50m
Multiple Airlines
Deal found 6/6₹ 74,582
Thu 25/610:00
LHR
-
SIN
1 stop24h 50m
Gulf Air
Thu 9/720:00
SIN
-
LHR
1 stop17h 55m
Gulf Air
Deal found 6/6₹ 74,677
Thu 29/1018:40
LHR
-
SIN
1 stop15h 25m
Multiple Airlines
Mon 30/1123:55
SIN
-
LHR
1 stop16h 50m
Multiple Airlines
Deal found 5/6₹ 74,773
Wed 24/622:05
LHR
-
SIN
1 stop36h 45m
Gulf Air
Thu 9/720:00
SIN
-
LHR
1 stop26h 20m
Gulf Air
Deal found 4/6₹ 74,868

Find flight deals from Heathrow to Southeast Asia

Keep the following information in mind while searching for Heathrow to Southeast Asia flight deals. Data was last updated 7 June 2026.

Round-trip from

₹ 72,677

One-way from

₹ 41,435

Popular in

December

Cheapest in

September

Average price

₹ 70,391
Gulf Air
  • Gulf Air
  • 24/6-8/7
  • 2 total stops
  • 37h 40m total
  • London to Southeast Asia
Search Deals
5/11
  • 5/11
  • 1 total stop
  • 24h 20m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (₹ 468,681 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (₹ 224,943 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 454,620 searches. Data last updated 7 June 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 12/11

18:40-15:55

Nonstop13h 15m

Singapore Changi

Mon 16/11

17:25-05:20

1 stop19h 55m

₹ 80,297

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sat 4/7

22:10-14:40

1 stop36h 00m

Port Blair

Fri 10/7

15:15-10:15

2 stops23h 30m

₹ 87,917

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 16/8

22:10-14:40

1 stop36h 00m

Port Blair

Sat 29/8

11:40-11:30

1 stop28h 20m

₹ 100,776

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 1/7

14:25-17:10

2 stops19h 45m

Singapore Changi

Tue 7/7

23:25-13:40

2 stops21h 15m

₹ 105,539

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 10/8

14:25-15:00

1 stop17h 35m

Singapore Changi

Wed 19/8

01:40-16:10

1 stop21h 30m

₹ 109,349
Fastest return journey

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 5/7

21:55-21:15

1 stop16h 20m

Singapore Changi

Sat 12/9

23:25-06:35

Nonstop14h 10m

₹ 114,874

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 26/11

14:50-19:25

2 stops20h 35m

Singapore Changi

Sun 6/12

10:50-21:40

2 stops18h 50m

₹ 116,779

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 25/8

22:00-18:40

Nonstop13h 40m

Singapore Changi

Tue 1/9

19:40-06:30

1 stop17h 50m

₹ 121,160

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 1/7

21:55-21:15

1 stop16h 20m

Singapore Changi

Tue 7/7

23:20-06:35

Nonstop14h 15m

₹ 123,827

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 12/11

08:55-12:15

2 stops19h 20m

Singapore Changi

Mon 16/11

20:45-07:15

1 stop18h 30m

₹ 129,447

Flights are sorted by cheapest return flights first.

Deals found on 4/6

Showing 1-10 of 25 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Southeast Asia

What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of ₹ 79,916). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of ₹ 132,305). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to YJX?

Find hourly flight availability from Heathrow to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Southeast Asia as you normally would.

Weekly flight availability from London Heathrow Airport to Southeast Asia

Explore weekly flight availability from Heathrow to Southeast Asia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 7 June 2026.

The most flights from LHR to zzYJX are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

How far ahead should I book a flight from London Heathrow Airport to Southeast Asia?

The best time to book flights from London Heathrow Airport to Southeast Asia is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London Heathrow Airport to Southeast Asia?

    Airlines like British Airways, Air India, and SWISS fly from London Heathrow Airport to Southeast Asia in about 13h 15m. The time it takes to get you to your destination can typically vary by up to 22h 45m. Airlines will cover a distance of 10874 km. This flight may include one or multiple stops.

  • What are the most reliable airlines from London Heathrow Airport to Southeast Asia?

    No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to Southeast Asia consider choosing Thai Airways(92%), EVA Air(91%) or Air Canada(91%), as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Heathrow to Southeast Asia that include hotel bookings?

    Yes. In addition to deals on Heathrow to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Southeast Asia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Southeast Asia.

  • Can I find deals for business class flights from Heathrow to Southeast Asia?

    Yes. Cheapflights offers flight deals from Heathrow to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Southeast Asia?

    Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of ₹ 79,916). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of ₹ 132,305). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Heathrow to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Heathrow to Southeast Asia

Discover the top airline that operate flights from Heathrow to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 454,620 searches. Data last updated 7 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest₹ 65,272Average₹ 81,124FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Southeast Asia?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Southeast Asia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Southeast Asia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Southeast Asia for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Heathrow to Southeast Asia with no change fees?

Certainly. Search results for flights to Southeast Asia from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to Southeast Asia become cheaper?

Yes! Start tracking prices for Heathrow to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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