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Cheap flights from the United Kingdom to Southeast Asia from ₹ 36,098

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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
20 Jan — 27 Jan1
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 21 December 2025.

Thu 25/1215:15LHR - SIN
1 stop18h 20mTurkish Airlines
Thu 15/110:15SIN - LHR
1 stop18h 50mTurkish Airlines
Deal found 21/12₹ 77,123
Sun 28/1221:10LHR - SIN
1 stop31h 00mShenzhen Airlines
Sat 24/103:00SIN - LHR
1 stop24h 10mShenzhen Airlines
Deal found 21/12₹ 80,616
Wed 24/1221:30LHR - SIN
1 stop15h 45mBritish Airways
Mon 26/123:15SIN - LHR
Nonstop14h 40mBritish Airways
Deal found 21/12₹ 89,484
Sun 28/1221:10LHR - SIN
1 stop31h 00mShenzhen Airlines
Fri 30/103:00SIN - LHR
1 stop24h 10mShenzhen Airlines
Deal found 21/12₹ 89,932
Sun 28/1221:10LHR - SIN
1 stop36h 20mShenzhen Airlines
Thu 29/118:30SIN - LHR
1 stop32h 40mShenzhen Airlines
Deal found 21/12₹ 90,021
Tue 30/1217:05LHR - SIN
1 stop15h 10mMultiple Airlines
Mon 26/122:50SIN - LHR
1 stop19h 40mMultiple Airlines
Deal found 21/12₹ 90,290
Wed 31/1218:40LHR - SIN
1 stop15h 20mMultiple Airlines
Tue 27/123:45SIN - LHR
1 stop16h 20mMultiple Airlines
Deal found 21/12₹ 91,007
Wed 24/1219:45LHR - SIN
1 stop23h 25mHainan Airlines
Sat 27/1212:15SIN - LHR
1 stop37h 40mHainan Airlines
Deal found 21/12₹ 91,186
Wed 31/1218:40LHR - SIN
1 stop15h 20mSWISS
Sun 25/100:05SIN - LHR
1 stop19h 10mSWISS
Deal found 21/12₹ 92,798
Wed 24/1219:45LHR - SIN
1 stop23h 25mMultiple Airlines
Tue 30/1210:25SIN - LHR
1 stop36h 30mMultiple Airlines
Deal found 21/12₹ 94,142
Wed 24/1221:30LHR - SIN
1 stop15h 45mBritish Airways
Sat 31/123:05SIN - LHR
Nonstop14h 40mBritish Airways
Deal found 21/12₹ 95,575
Mon 22/1208:40LHR - SIN
1 stop23h 35mKLM
Tue 30/1201:40SIN - LHR
1 stop17h 05mKLM
Deal found 20/12₹ 95,754

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 21 December 2025.

Round-trip from

₹ 56,879

One-way from

₹ 36,098

Popular in

December

Cheapest in

May

Average price

₹ 101,935
Lufthansa
  • Lufthansa
  • 25/4-10/5
  • 2 total stops
  • 33h 40m total
  • United Kingdom to Southeast Asia
Search Deals
5/2
  • 5/2
  • 1 total stop
  • 21h 05m total
  • United Kingdom to Southeast Asia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (₹ 575,555 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (₹ 204,183 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 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 21 December 2025.
Use the filters below to find and compare flights from the United Kingdom to Southeast Asia that are best for you.

Fly from

United Kingdom

Fly to

Southeast Asia

Route

Depart

Return

Price

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Wed 4/2

21:05-07:50

2 stops29h 15m

Port Blair

Wed 11/2

09:40-11:05

2 stops30h 55m

₹ 58,850

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Mon 16/3

22:00-10:55

1 stop31h 25m

Port Blair

Mon 23/3

11:30-20:30

1 stop38h 30m

₹ 59,029

LondonPort Blair

LHR - IXZ

LHRIXZ

London Heathrow

Mon 2/2

21:05-07:50

2 stops29h 15m

Port Blair

Mon 9/2

11:30-11:05

2 stops29h 05m

₹ 59,835

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 27/4

10:00-12:20

1 stop19h 20m

Singapore Changi

Mon 11/5

20:00-06:55

1 stop17h 55m

₹ 61,000

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 14/1

18:40-18:00

1 stop15h 20m

Singapore Changi

Mon 2/2

00:05-13:40

2 stops21h 35m

₹ 65,657

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 14/1

14:25-18:00

2 stops19h 35m

Singapore Changi

Tue 20/1

00:05-13:40

2 stops21h 35m

₹ 68,703

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 27/1

14:25-18:00

2 stops19h 35m

Singapore Changi

Mon 2/2

00:05-13:40

2 stops21h 35m

₹ 68,703

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 25/1

14:25-18:00

2 stops19h 35m

Singapore Changi

Fri 30/1

00:05-11:15

1 stop19h 10m

₹ 70,226

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 1/3

13:00-18:55

1 stop21h 55m

Singapore Changi

Sun 15/3

13:35-06:35

2 stops25h 00m

₹ 73,450

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 3/2

15:30-14:55

1 stop15h 25m

Singapore Changi

Mon 9/2

23:05-05:45

Nonstop14h 40m

₹ 73,988

Flights are sorted by cheapest return flights first.

Deals found on 21/12

Showing 1-10 of 26 results
1
2
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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, May is the cheapest month in which you can book a flight from United Kingdom to Southeast Asia (average of ₹ 40,129). Flying from United Kingdom to Southeast Asia in July is currently the most expensive (average of ₹ 61,537). 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 21 December 2025.

It’s optimal to fly from United Kingdom to Southeast Asia in the morning. By choosing this option you can save up to 32% 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 21 December 2025.

The most flights from GB0 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).

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 21 December 2025.
Get a feel of what it's like to fly with Air China 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.
Air China
7.2
Good
131 reviews
Check prices

Crew

7.9

Entertainment

6.4

Comfort

7.0

Food

7.0

Overall

7.2

Boarding

7.6

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
131 reviews
Air China
7.2
Good
131 reviews
Check prices

Crew

7.9

Entertainment

6.4

Comfort

7.0

Food

7.0

Overall

7.2

Boarding

7.6

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 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, Gulf Air, and SWISS fly from United Kingdom to Southeast Asia in about 15h 20m. The time it takes to get you to your destination can typically vary by up to 13h 55m. 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, May is the cheapest month in which you can book a flight from United Kingdom to Southeast Asia (average of ₹ 40,129). Flying from United Kingdom to Southeast Asia in July is currently the most expensive (average of ₹ 61,537). 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 United Kingdom to Southeast Asia

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Top airline flying from United Kingdom to Southeast Asia

Discover the top airline 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 21 December 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest₹ 86,637Average₹ 116,067FlexibilityNo 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?

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