Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London to Southeast Asia from ₹ 36,342

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 16/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
6 Apr — 13 Apr1
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 7 March 2026.

Sat 25/420:05
LHR
-
SIN
1 stop38h 05m
SWISS
Mon 11/523:25
SIN
-
LHR
2 stops21h 15m
SWISS
Deal found 2/3₹ 62,039
Thu 18/621:05
LHR
-
SIN
1 stop27h 40m
Air India
Sat 4/708:55
SIN
-
LHR
1 stop17h 05m
Air India
Deal found 2/3₹ 62,406
Tue 10/1117:50
LHR
-
SIN
1 stop15h 35m
Lufthansa
Tue 24/1123:45
SIN
-
LHR
1 stop16h 20m
Lufthansa
Deal found 2/3₹ 62,497
Sun 1/1114:05
LHR
-
SIN
1 stop18h 10m
Multiple Airlines
Tue 1/1222:50
SIN
-
LHR
1 stop19h 40m
Multiple Airlines
Deal found 3/3₹ 62,681
Sun 15/321:10
LHR
-
SIN
1 stop20h 50m
Shenzhen Airlines
Thu 26/303:00
SIN
-
LHR
1 stop24h 10m
Shenzhen Airlines
Deal found 4/3₹ 62,865
Sun 28/613:15
LHR
-
SIN
1 stop25h 30m
Air India
Tue 14/719:40
SIN
-
LHR
1 stop21h 35m
Air India
Deal found 4/3₹ 63,048
Sun 8/321:10
LHR
-
SIN
1 stop31h 00m
Shenzhen Airlines
Tue 31/318:10
SIN
-
LHR
1 stop32h 50m
Shenzhen Airlines
Deal found 2/3₹ 63,507
Sun 15/321:00
LHR
-
SIN
1 stop36h 00m
China Eastern
Mon 15/612:40
SIN
-
LHR
2 stops37h 00m
China Eastern
Deal found 4/3₹ 63,599
Fri 6/1117:50
LHR
-
SIN
1 stop15h 35m
Lufthansa
Fri 20/1123:55
SIN
-
LHR
1 stop17h 50m
Lufthansa
Deal found 4/3₹ 63,782
Sat 30/514:45
LHR
-
SIN
1 stop17h 55m
Multiple Airlines
Wed 22/722:20
SIN
-
LHR
1 stop25h 15m
Multiple Airlines
Deal found 5/3₹ 63,966
Tue 10/321:00
LHR
-
SIN
2 stops44h 40m
China Eastern
Wed 18/316:15
SIN
-
LHR
1 stop33h 15m
China Eastern
Deal found 2/3₹ 64,149
Tue 10/1117:50
LHR
-
SIN
1 stop15h 35m
Multiple Airlines
Tue 24/1100:05
SIN
-
LHR
1 stop16h 00m
Multiple Airlines
Deal found 2/3₹ 64,333

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 7 March 2026.

Round-trip from

₹ 62,039

One-way from

₹ 36,342

Popular in

July

Cheapest in

May

Average price

₹ 76,355
SWISS
  • SWISS
  • 25/4-11/5
  • 3 total stops
  • 59h 20m total
  • London to Southeast Asia
Search Deals
16/5
  • 16/5
  • 1 total stop
  • 19h 55m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (₹ 955,166 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (₹ 206,864 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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 7 March 2026.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 16/4

21:45-14:25

2 stops36h 10m

Port Blair

Thu 23/4

11:30-20:20

2 stops37h 20m

₹ 70,115

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 8/4

10:20-18:30

1 stop25h 10m

Singapore Changi

Thu 16/4

21:35-20:40

1 stop30h 05m

₹ 70,206

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Mon 27/7

22:10-14:25

1 stop35h 45m

Port Blair

Sun 2/8

15:05-20:20

1 stop33h 45m

₹ 72,409

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Mon 20/4

22:10-14:25

1 stop35h 45m

Port Blair

Mon 27/4

11:30-10:15

2 stops27h 15m

₹ 73,327

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Mon 20/4

14:45-14:25

2 stops19h 10m

Port Blair

Mon 27/4

08:55-07:00

3 stops26h 35m

₹ 79,017

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Wed 15/4

22:10-10:55

2 stops32h 15m

Port Blair

Tue 21/4

11:30-10:15

2 stops27h 15m

₹ 79,475

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Thu 16/4

09:30-08:55

2 stops18h 55m

Port Blair

Thu 23/4

11:20-18:45

3 stops35h 55m

₹ 83,055
Fastest return journey

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 10/4

09:25-05:45

Nonstop13h 20m

Singapore Changi

Fri 24/4

12:35-19:30

Nonstop13h 55m

₹ 83,697

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 21/4

19:25-16:05

Nonstop13h 40m

Singapore Changi

Wed 29/4

19:40-06:25

1 stop17h 45m

₹ 84,523

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sat 21/3

08:45-08:55

2 stops42h 40m

Port Blair

Sat 28/3

11:40-17:10

1 stop35h 00m

₹ 97,188

Flights are sorted by cheapest return flights first.

Deals found on 6/3

Showing 1-10 of 31 resultsSorted by cheapest first
1
2
3
4

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, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of ₹ 37,352). Flying from London to Southeast Asia in July is currently the most expensive (average of ₹ 50,659). 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 7 March 2026.

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

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 7 March 2026.

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 7 March 2026.
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
7.3
Good
141 reviews
Check prices

Comfort

7.0

Boarding

7.7

Food

7.1

Crew

7.9

Entertainment

6.4

Overall

7.3

Reviews

1 / 5
8.0
Excellent

Anonymous,Dec 2025

BKK - TFU

It would be nice to have backseat TV or complimentary Wi-Fi.
Air China
7.3
Good
141 reviews
Air China
7.3
Good
141 reviews
Check prices

Comfort

7.0

Boarding

7.7

Food

7.1

Crew

7.9

Entertainment

6.4

Overall

7.3

Reviews

1 / 5
8.0
Excellent

Anonymous,Dec 2025

BKK - TFU

It would be nice to have backseat TV or complimentary Wi-Fi.

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, Finnair, and Singapore Airlines fly from London to Southeast Asia in about 13h 20m. The time it takes to get you to your destination can typically vary by up to 22h 50m. 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 Thai Airways (88%), Air Canada (85%) and EVA Air (85%).

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

    Looking at all options, your cheapest flight can be booked for ₹ 93,050. While the most popular route (London Heathrow - Port Blair) can be booked for ₹ 72,409 on average, our data indicates ₹ 117,663 when flying from London to Southeast Asia.

  • 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, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of ₹ 37,352). Flying from London to Southeast Asia in July is currently the most expensive (average of ₹ 50,659). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to New Delhi flights
Heathrow to Mumbai flights
Gatwick to New Delhi flights
Stansted to New Delhi flights
Gatwick to Mumbai flights
Stansted to Mumbai flights
Heathrow to Hyderabad flights
Heathrow to Chennai flights
Heathrow to Bangalore flights
Heathrow to Cochin flights
Gatwick to Hyderabad flights
London City to Mumbai flights
Luton to Mumbai flights
Luton to New Delhi flights
Gatwick to Cochin flights
Stansted to Cochin flights
London City to New Delhi flights
Heathrow to Ahmedabad flights
Gatwick to Amritsar flights
Gatwick to Ahmedabad flights
Heathrow to Amritsar flights
London City to Hyderabad flights
Birmingham to Amritsar flights
Stansted to Bangalore flights
Manchester to Mumbai flights
Birmingham to New Delhi flights
Stansted to Hyderabad flights
Heathrow to Vasco da Gama flights
Gatwick to Bangalore flights
Gatwick to Chennai flights
London City to Cochin flights
Stansted to Chennai flights
Manchester to New Delhi flights
London City to Chennai flights
Heathrow to Trivandrum flights
Stansted to Ahmedabad flights
Gatwick to Vasco da Gama flights
London City to Vasco da Gama flights
London City to Bangalore flights
Manchester to Cochin flights
London City to Ahmedabad flights
Gatwick to Trivandrum flights
Stansted to Trivandrum flights
Stansted to Amritsar flights
London City to Amritsar flights
Heathrow to Kolkata flights
Southend to New Delhi flights
Stansted to Kolkata flights
Manchester to Amritsar flights
Manchester to Chennai 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.