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Cheap flights from the United Kingdom to Southeast Asia from ₹ 42,954

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
7 Aug — 14 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Southeast Asia
Explore the most affordable flight options available from United Kingdom to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2026.

Wed 30/922:10
LHR
-
IXZ
1 stop36h 00m
Air India
Sun 18/1011:40
IXZ
-
LHR
1 stop24h 20m
Air India
Deal found 8/7₹ 60,231
Sun 4/1022:10
LHR
-
IXZ
1 stop36h 00m
Air India
Wed 14/1011:40
IXZ
-
LHR
2 stops37h 10m
Air India
Deal found 6/7₹ 62,044
Sun 4/1022:10
LHR
-
IXZ
1 stop36h 00m
Air India
Fri 16/1011:40
IXZ
-
LHR
1 stop24h 20m
Air India
Deal found 6/7₹ 62,331
Tue 6/1022:10
LHR
-
IXZ
2 stops32h 20m
Air India
Fri 16/1011:40
IXZ
-
LHR
1 stop35h 50m
Air India
Deal found 6/7₹ 62,426
Thu 10/907:30
LHR
-
SIN
1 stop28h 00m
Finnair
Thu 24/921:35
SIN
-
LHR
1 stop18h 35m
Finnair
Deal found 8/7₹ 76,171
Sat 10/1010:00
LHR
-
SIN
1 stop19h 45m
Gulf Air
Fri 23/1020:00
SIN
-
LHR
1 stop17h 55m
Gulf Air
Deal found 5/7₹ 76,744
Wed 30/1221:10
LHR
-
SIN
1 stop36h 05m
Shenzhen Airlines
Sat 23/118:45
SIN
-
LHR
1 stop32h 25m
Shenzhen Airlines
Deal found 7/7₹ 77,030
Tue 20/1010:00
LHR
-
SIN
1 stop19h 45m
Gulf Air
Tue 27/1020:00
SIN
-
LHR
1 stop26h 45m
Gulf Air
Deal found 7/7₹ 77,126
Thu 22/1010:00
LHR
-
SIN
1 stop19h 45m
Gulf Air
Tue 27/1020:00
SIN
-
LHR
1 stop18h 35m
Gulf Air
Deal found 8/7₹ 77,221
Thu 22/1017:15
LHR
-
SIN
1 stop16h 55m
Multiple Airlines
Sun 25/1023:45
SIN
-
LHR
1 stop18h 40m
Multiple Airlines
Deal found 8/7₹ 77,508
Sat 22/809:30
LHR
-
SIN
1 stop17h 10m
Etihad Airways
Thu 10/921:00
SIN
-
LHR
1 stop28h 45m
Etihad Airways
Deal found 7/7₹ 78,080
Tue 10/1119:20
LHR
-
SIN
1 stop30h 15m
Etihad Airways
Sat 21/1119:25
SIN
-
LHR
1 stop30h 45m
Etihad Airways
Deal found 8/7₹ 78,176

Find flight deals from United Kingdom to Southeast Asia

Keep the following information in mind while searching for United Kingdom to Southeast Asia flight deals. Data was last updated 8 July 2026.

Round-trip from

₹ 60,231

One-way from

₹ 42,954

Popular in

December

Cheapest in

September

Average price

₹ 102,039
Air India
  • Air India
  • 30/9-18/10
  • 2 total stops
  • 60h 20m total
  • United Kingdom to Southeast Asia
Search Deals
Air China
  • Air China
  • 3/11
  • 1 total stop
  • 33h 20m total
  • United Kingdom to Southeast Asia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (₹ 545,062 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (₹ 237,364 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 8 July 2026.
Use the filters below to find and compare flights from the United Kingdom 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

Wed 30/9

22:10-14:40

1 stop36h 00m

Port Blair

Sun 18/10

11:40-07:30

1 stop24h 20m

₹ 60,231

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 4/10

22:10-14:40

1 stop36h 00m

Port Blair

Fri 16/10

11:40-07:30

1 stop24h 20m

₹ 62,331

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Sun 4/10

20:35-14:40

2 stops37h 35m

Port Blair

Wed 14/10

11:40-11:30

2 stops28h 20m

₹ 63,762

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Tue 4/8

22:10-14:40

1 stop36h 00m

Port Blair

Tue 11/8

15:15-07:30

2 stops20h 45m

₹ 75,694

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Mon 12/10

22:10-14:40

1 stop36h 00m

Port Blair

Sat 17/10

15:15-10:15

2 stops23h 30m

₹ 79,989

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 1/11

21:00-14:45

2 stops33h 45m

Singapore Changi

Sun 8/11

10:10-17:30

1 stop39h 20m

₹ 81,230

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Wed 19/8

12:30-11:00

2 stops42h 00m

Port Blair

Wed 26/8

11:40-19:00

1 stop35h 50m

₹ 94,307

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 29/12

22:40-08:45

1 stop26h 05m

Singapore Changi

Tue 23/2

10:25-22:30

1 stop20h 05m

₹ 96,503
Fastest return journey

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 2/10

19:25-16:10

Nonstop13h 45m

Singapore Changi

Fri 9/10

22:40-05:35

Nonstop13h 55m

₹ 96,980

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 22/10

07:30-05:30

2 stops39h 00m

Singapore Changi

Mon 26/10

14:05-15:15

2 stops33h 10m

₹ 97,553

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 32 resultsSorted by cheapest first
1
2
3
4

Best time to book a flight from United Kingdom to Southeast Asia

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

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

Currently, November is the cheapest month in which you can book a flight from United Kingdom to Southeast Asia (average of ₹ 81,994). Flying from United Kingdom to Southeast Asia in December is currently the most expensive (average of ₹ 131,916). 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 GB to YJX?

Find hourly flight availability from United Kingdom 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 8 July 2026.

It’s optimal to fly from United Kingdom to Southeast Asia in the morning. By choosing this option you can save up to 38% on the cost of your flight, compared to a flight at midday.

Weekly flight availability from United Kingdom to Southeast Asia

Explore weekly flight availability from United Kingdom 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 8 July 2026.

The most flights from GB0 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 United Kingdom to Southeast Asia?

To ensure you get the cheapest price possible for a flight from United Kingdom to Southeast Asia, you should look to book at least 82 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 8 July 2026.
Get a feel of what it's like to fly with Cathay Pacific and Etihad Airways from the United Kingdom 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.
Cathay Pacific
7.6
Good
1,403 reviews
Check prices

Crew

8.1

Comfort

7.6

Overall

7.6

Food

7.3

Entertainment

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Cathay Pacific
7.6
Good
1,403 reviews
Cathay Pacific
7.6
Good
1,403 reviews
Check prices

Crew

8.1

Comfort

7.6

Overall

7.6

Food

7.3

Entertainment

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Etihad Airways
7.3
Good
1,477 reviews
Cathay Pacific
7.6
Good
1,403 reviews
Check prices

Crew

8.1

Comfort

7.6

Overall

7.6

Food

7.3

Entertainment

7.8

Boarding

7.9

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Related info for your journey

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

    Airlines like Air India, China Eastern, and Gulf Air fly from United Kingdom to Southeast Asia in about 19h 45m. The time it takes to get you to your destination can typically vary by up to 24h 45m. The distance from United Kingdom to Southeast Asia is about 10874 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Southeast Asia?

    Currently, November is the cheapest month in which you can book a flight from United Kingdom to Southeast Asia (average of ₹ 81,994). Flying from United Kingdom to Southeast Asia in December is currently the most expensive (average of ₹ 131,916). 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 United Kingdom to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from United Kingdom to Southeast Asia

Discover the top 2 airlines that operate flights from United Kingdom 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 8 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest₹ 65,410Average₹ 80,134FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
EVA AirCheapest₹ 92,324Average₹ 117,632FlexibilityNo cancel feeOn-time74%
Search EVA Air flights

Fly with Cheapflights

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

Cheapflights makes it easy to find United Kingdom to Southeast Asia flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Southeast Asia.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from United Kingdom to Southeast Asia flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from United Kingdom to Southeast Asia and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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