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Cheap flights from London to Southeast Asia from ₹ 36,960

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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
5 Jan — 12 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from London to Southeast Asia
Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 December 2025.

Sat 6/1216:25LHR - SIN
1 stop15h 50mKLM
Sat 7/201:40SIN - LHR
1 stop18h 25mKLM
Deal found 6/12₹ 60,791
Sat 6/1214:05LHR - SIN
1 stop18h 10mMultiple Airlines
Sun 18/122:50SIN - LHR
1 stop19h 40mMultiple Airlines
Deal found 6/12₹ 60,881
Wed 31/1221:10LHR - SIN
1 stop31h 00mShenzhen Airlines
Fri 16/103:00SIN - LHR
1 stop24h 10mShenzhen Airlines
Deal found 6/12₹ 61,510
Sat 6/1214:05LHR - SIN
2 stops18h 50mKLM
Sat 24/101:40SIN - LHR
1 stop17h 05mKLM
Deal found 6/12₹ 63,668
Mon 8/1209:30LHR - SIN
1 stop19h 00mGulf Air
Wed 21/120:00SIN - LHR
1 stop18h 35mGulf Air
Deal found 6/12₹ 65,107
Fri 5/1210:00LHR - SIN
1 stop22h 15mMultiple Airlines
Fri 12/1210:55SIN - LHR
1 stop18h 30mMultiple Airlines
Deal found 4/12₹ 65,647
Sat 6/1214:05LHR - SIN
1 stop18h 10mMultiple Airlines
Sun 21/1210:55SIN - LHR
1 stop18h 30mMultiple Airlines
Deal found 6/12₹ 65,827
Sat 6/1206:30LHR - SIN
1 stop25h 45mMultiple Airlines
Fri 12/1210:55SIN - LHR
1 stop18h 30mMultiple Airlines
Deal found 5/12₹ 65,917
Thu 4/1215:45LHR - SIN
1 stop16h 30mKLM
Wed 10/1201:40SIN - LHR
1 stop17h 05mKLM
Deal found 4/12₹ 67,535
Mon 8/1217:05LHR - SIN
1 stop15h 10mMultiple Airlines
Fri 12/1210:55SIN - LHR
1 stop18h 30mMultiple Airlines
Deal found 4/12₹ 67,625
Sat 6/1214:05LHR - SIN
2 stops18h 50mMultiple Airlines
Sun 1/222:50SIN - LHR
1 stop17h 05mMultiple Airlines
Deal found 6/12₹ 67,985
Sun 28/1222:00LHR - IXZ
1 stop29h 10mAir India
Sun 11/110:05IXZ - LHR
1 stop30h 55mAir India
Deal found 4/12₹ 75,539

Find flight deals from London to Southeast Asia

Keep the following information in mind while searching for London to Southeast Asia flight deals. Data was last updated 6 December 2025.

Round-trip from

₹ 56,744

One-way from

₹ 36,960

Popular in

December

Cheapest in

May

Average price

₹ 105,125
Lufthansa
  • Lufthansa
  • 5/5-20/5
  • 2 total stops
  • 31h 25m total
  • London to Southeast Asia
Search Deals
15/2
  • 15/2
  • 1 total stop
  • 21h 05m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (₹ 639,534 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (₹ 225,295 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 6 December 2025.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

London

Fly to

Southeast Asia

Route

Depart

Return

Price

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 20/1

08:45-10:55

1 stop20h 40m

Port Blair

Tue 27/1

11:30-20:30

1 stop38h 30m

₹ 56,744

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 5/3

13:30-14:25

2 stops19h 25m

Port Blair

Thu 19/3

09:40-19:30

1 stop15h 20m

₹ 59,262

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 12/2

09:30-12:30

1 stop19h 00m

Singapore Changi

Wed 11/3

20:00-14:45

1 stop26h 45m

₹ 64,388

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 1/3

21:05-14:25

1 stop35h 50m

Port Blair

Sun 15/3

11:30-11:30

1 stop29h 30m

₹ 64,748

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 10/2

14:25-18:00

2 stops19h 35m

Singapore Changi

Mon 9/3

00:05-08:05

1 stop16h 00m

₹ 65,647

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 1/3

20:10-17:40

Nonstop13h 30m

Singapore Changi

Sun 15/3

23:05-06:15

Nonstop15h 10m

₹ 72,032

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 23/4

09:45-19:30

1 stop26h 45m

Singapore Changi

Fri 22/5

14:35-10:15

2 stops26h 40m

₹ 72,751

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 1/3

22:00-07:00

1 stop25h 00m

Singapore Changi

Sun 15/3

13:35-06:35

2 stops25h 00m

₹ 73,021

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sat 28/2

20:10-17:40

Nonstop13h 30m

Singapore Changi

Sun 15/3

23:05-06:15

Nonstop15h 10m

₹ 75,089

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 28/12

22:00-08:40

1 stop29h 10m

Port Blair

Sun 11/1

10:05-11:30

1 stop30h 55m

₹ 75,539

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 26 results
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2
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Best time to book a flight from London to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from London 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 to Southeast Asia

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

Currently, May is the cheapest month in which you can book a flight from London to Southeast Asia (average of ₹ 40,557). Flying from London to Southeast Asia in July is currently the most expensive (average of ₹ 61,780). 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 LON to YJX?

Find hourly flight availability from London 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 6 December 2025.

It’s typically best to fly out from London to Southeast Asia at midday. Doing so could potentially save you 26% on the flight price compared to flying in the afternoon, which is usually more expensive.

Weekly flight availability from London to Southeast Asia

Explore weekly flight availability from London 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 6 December 2025.

The most flights from LON to zzYJX are scheduled on a Tuesday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (8 on average).

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 6 December 2025.
Get a feel of what it's like to fly with Air China from London to Southeast Asia by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air China
7.2
Good
127 reviews
Check prices

Boarding

7.6

Food

7.0

Entertainment

6.4

Comfort

7.0

Overall

7.2

Crew

7.9

Reviews

1 / 4
8.0
Excellent

jin oh,Nov 2025

HGH - HKG

Kind attention. Food was ok and the entertainment not remarkable
Air China
7.2
Good
127 reviews
Air China
7.2
Good
127 reviews
Check prices

Boarding

7.6

Food

7.0

Entertainment

6.4

Comfort

7.0

Overall

7.2

Crew

7.9

Reviews

1 / 4
8.0
Excellent

jin oh,Nov 2025

HGH - HKG

Kind attention. Food was ok and the entertainment not remarkable

Related info for your journey

Find useful and relevant information for your journey from London 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 to Southeast Asia?

    Airlines like Air India, Gulf Air, and SWISS fly from London to Southeast Asia in about 19h. The time it takes to get you to your destination can typically vary by up to 35m. The distance between London and Southeast Asia is about 10874 km. Both multi-stop and direct flights can be found to your destination and back.

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

    The top 3 most reliable airlines when flying from London to Southeast Asia are EVA Air (90%), Thai Airways (87%) and Air Canada (83%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London 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 to Southeast Asia?

    Currently, May is the cheapest month in which you can book a flight from London to Southeast Asia (average of ₹ 40,557). Flying from London to Southeast Asia in July is currently the most expensive (average of ₹ 61,780). 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 London 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 London to Southeast Asia

Discover the top airline that operate flights from London 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 6 December 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest₹ 86,979Average₹ 116,525FlexibilityNo cancel feeOn-time74%
Search EVA Air 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 London to Southeast Asia?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London 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 London to Southeast Asia?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Southeast Asia from London.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Southeast Asia, users can toggle the no change fees filter when performing a flight search.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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