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Cheap flights from London Heathrow Airport to Southeast Asia from ₹ 35,875

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 26/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 9 January 2026.

Round-trip from

₹ 56,285

One-way from

₹ 35,875

Popular in

July

Cheapest in

May

Average price

₹ 73,818
Air India
  • Air India
  • 5/2-12/2
  • 2 total stops
  • 46h 10m total
  • London to Southeast Asia
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26/2
  • 26/2
  • 1 total stop
  • 21h 05m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (₹ 960,554 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (₹ 202,824 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find 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 9 January 2026.

Thu 5/221:05LHR - IXZ
1 stop30h 35mAir India
Thu 12/209:25IXZ - LHR
1 stop15h 35mAir India
Deal found 8/1₹ 56,285
Tue 3/217:05LHR - SIN
1 stop15h 10mKLM
Mon 9/201:40SIN - LHR
1 stop17h 05mKLM
Deal found 7/1₹ 57,634
Tue 3/217:05LHR - SIN
1 stop15h 10mMultiple Airlines
Sun 15/210:55SIN - LHR
1 stop18h 30mMultiple Airlines
Deal found 7/1₹ 57,814
Sat 14/317:50LHR - SIN
1 stop15h 35mLufthansa
Sun 22/323:55SIN - LHR
1 stop18h 50mLufthansa
Deal found 8/1₹ 57,904
Fri 13/317:50LHR - SIN
1 stop15h 35mMultiple Airlines
Wed 18/300:05SIN - LHR
1 stop16h 00mMultiple Airlines
Deal found 7/1₹ 57,994
Wed 21/115:45LHR - SIN
1 stop16h 30mMultiple Airlines
Fri 30/110:55SIN - LHR
1 stop18h 30mMultiple Airlines
Deal found 8/1₹ 58,263
Thu 5/320:05LHR - SIN
1 stop37h 55mSWISS
Tue 17/300:05SIN - LHR
1 stop16h 00mSWISS
Deal found 8/1₹ 58,803
Sun 1/317:05LHR - SIN
1 stop15h 10mMultiple Airlines
Mon 16/322:50SIN - LHR
1 stop19h 40mMultiple Airlines
Deal found 8/1₹ 58,893
Sat 6/616:10LHR - SIN
1 stop19h 20mFinnair
Tue 16/621:35SIN - LHR
1 stop18h 35mFinnair
Deal found 8/1₹ 59,252
Mon 18/517:50LHR - SIN
1 stop15h 45mLufthansa
Tue 9/623:40SIN - LHR
1 stop16h 00mLufthansa
Deal found 7/1₹ 59,522
Fri 27/220:05LHR - SIN
1 stop37h 55mSWISS
Sun 15/300:05SIN - LHR
1 stop16h 00mSWISS
Deal found 8/1₹ 59,612
Tue 3/209:30LHR - SIN
1 stop19h 00mGulf Air
Wed 25/220:00SIN - LHR
1 stop18h 35mGulf Air
Deal found 9/1₹ 60,062

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 9 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Southeast Asia that are best for you.

Fly from

Heathrow

Fly to

Southeast Asia

Route

Depart

Return

Price

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 5/2

21:05-09:10

1 stop30h 35m

Port Blair

Thu 12/2

09:25-19:30

1 stop15h 35m

₹ 56,285

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 15/3

21:50-12:30

1 stop30h 40m

Singapore Changi

Tue 24/3

20:00-06:35

1 stop18h 35m

₹ 60,241

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 5/3

14:25-18:00

2 stops19h 35m

Singapore Changi

Tue 17/3

00:05-08:05

1 stop16h 00m

₹ 61,860

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 6/2

21:50-12:30

1 stop30h 40m

Singapore Changi

Tue 10/2

20:00-06:35

1 stop18h 35m

₹ 63,298

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 5/2

09:30-14:25

2 stops23h 25m

Port Blair

Thu 12/2

09:25-06:35

2 stops26h 40m

₹ 66,715

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 17/3

09:10-06:10

Nonstop13h 00m

Singapore Changi

Mon 27/4

12:35-19:30

Nonstop13h 55m

₹ 70,491

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 7/3

17:10-18:00

1 stop16h 50m

Singapore Changi

Sun 15/3

00:05-13:40

2 stops21h 35m

₹ 70,941

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 19/1

08:25-20:35

2 stops28h 10m

Singapore Changi

Mon 26/1

21:20-18:25

2 stops29h 05m

₹ 71,301

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 23/2

08:25-10:20

2 stops17h 55m

Singapore Changi

Mon 2/3

17:25-18:25

2 stops33h 00m

₹ 71,390

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 7/2

21:50-12:30

1 stop30h 40m

Singapore Changi

Fri 20/2

20:00-06:35

1 stop18h 35m

₹ 71,480

Flights are sorted by cheapest return flights first.

Deals found on 8/1

Showing 1-10 of 24 results
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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 ₹ 44,776). Flying from London Heathrow Airport to Southeast Asia in July is currently the most expensive (average of ₹ 65,636). 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 9 January 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 9 January 2026.

The most flights from LHR to zzYJX are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

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 Air India, Gulf Air, and SWISS fly from London Heathrow Airport to Southeast Asia in about 19h. The time it takes to get you to your destination can typically vary by up to 11h 35m. 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 EVA Air(83%), Thai Airways(80%) or Air Canada(76%), as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London Heathrow Airport to Southeast Asia?

    Looking for the cheapest flight from London Heathrow Airport to Southeast Asia? While on average our users pay ₹ 170,559, our data indicates the cheapest price to be ₹ 127,013. The most popular route (London Heathrow - Port Blair), is priced around ₹ 57,814.

  • 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 ₹ 44,776). Flying from London Heathrow Airport to Southeast Asia in July is currently the most expensive (average of ₹ 65,636). 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

Browse thousands of different options on Cheapflights for your next trip

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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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Fly with Cheapflights

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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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