How long is the flight from United Kingdom to Southeast Asia?

Airlines like Air India, KLM, and British Airways fly from United Kingdom to Southeast Asia in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 22h 15m. 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.

In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

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.

₹ 35,422+ Cheap Flights from the United Kingdom to Southeast Asia

Cheap flight deals from United Kingdom to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 28 August 2026.

Sun 4/1012:30 -

2 stops42h 00m

Sun 11/1011:40 -

1 stop35h 50m

Deal found 28/8₹ 61,106

Sun 4/1012:30 -

2 stops42h 00m

Mon 12/1011:40 -

2 stops27h 05m

Deal found 28/8₹ 61,774

Sun 4/1022:10 -

1 stop36h 00m

Tue 13/1011:40 -

2 stops27h 05m

Deal found 28/8₹ 61,870

Tue 6/1012:30 -

2 stops21h 40m

Thu 15/1011:40 -

1 stop35h 50m

Deal found 24/8₹ 62,825

Sun 11/1021:05 -

2 stops33h 25m

Sun 18/1011:40 -

1 stop35h 50m

Deal found 27/8₹ 63,398

Sat 7/1121:05 -

1 stop35h 50m

Sat 14/1110:05 -

1 stop38h 45m

Deal found 24/8₹ 66,453

Wed 16/922:40 -

1 stop25h 10m

Wed 23/921:00 -

1 stop17h 00m

Deal found 25/8₹ 69,413

Sun 1/1121:10 -

1 stop20h 50m

Thu 3/1203:00 -

1 stop24h 10m

Deal found 24/8₹ 69,604

Mon 12/1010:00 -

1 stop19h 45m

Mon 19/1016:00 -

1 stop35h 15m

Deal found 28/8₹ 72,564

Thu 29/1017:05 -

1 stop15h 10m

Thu 12/1122:50 -

1 stop17h 05m

Deal found 27/8₹ 72,754

Mon 14/914:45 -

1 stop17h 55m

Tue 22/910:50 -

1 stop17h 35m

Deal found 25/8₹ 72,850

Sun 1/1121:40 -

1 stop31h 10m

Tue 24/1120:00 -

1 stop18h 35m

Deal found 27/8₹ 73,614

Best flights from United Kingdom to Southeast Asia
Discover carefully curated flight deals from United Kingdom to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 August 2026.

Sun 4/1012:30 -

2 stops42h 00m

Mon 12/1011:40 -

1 stop28h 20m

Deal found 28/8₹ 61,106

Fri 12/218:45 -

Nonstop13h 20m

Thu 18/223:15 -

Nonstop14h 30m

Deal found 27/8₹ 76,574

Wed 3/208:40 -

1 stop23h 35m

Wed 17/201:40 -

1 stop17h 05m

Deal found 27/8₹ 77,624

Sun 4/1012:30 -

2 stops45h 40m

Mon 12/1010:35 -

3 stops24h 50m

Deal found 28/8₹ 77,719

Sat 13/206:25 -

1 stop16h 25m

Tue 16/204:35 -

1 stop18h 20m

Deal found 27/8₹ 88,413

Sun 4/1022:10 -

1 stop36h 00m

Sun 11/1011:40 -

1 stop28h 20m

Deal found 28/8₹ 61,106

Sun 11/1021:05 -

2 stops33h 25m

Sun 18/1011:40 -

1 stop35h 50m

Deal found 27/8₹ 63,398

Mon 12/1019:25 -

Nonstop13h 45m

Mon 19/1023:25 -

Nonstop14h 10m

Deal found 28/8₹ 76,860

Fri 5/208:40 -

1 stop23h 35m

Wed 17/201:40 -

1 stop17h 05m

Deal found 27/8₹ 80,870

Sun 4/1021:45 -

3 stops30h 10m

Sun 11/1008:55 -

3 stops32h 20m

Deal found 28/8₹ 82,302

Sun 20/919:25 -

Nonstop13h 45m

Sun 27/923:25 -

Nonstop14h 10m

Deal found 23/8₹ 77,910

Sat 7/1121:05 -

2 stops30h 50m

Sat 14/1111:30 -

1 stop38h 30m

Deal found 24/8₹ 71,800

Sun 11/1012:30 -

2 stops42h 00m

Sun 18/1010:50 -

3 stops24h 35m

Deal found 27/8₹ 84,689

Mon 7/916:00 -

1 stop16h 45m

Mon 14/923:25 -

Nonstop14h 10m

Deal found 24/8₹ 83,353

Sat 24/1022:10 -

1 stop35h 45m

Tue 3/1111:30 -

1 stop29h 30m

Deal found 26/8₹ 80,584

Tue 15/919:25 -

Nonstop13h 45m

Mon 21/919:15 -

1 stop17h 10m

Deal found 27/8₹ 84,021

Sat 28/1122:00 -

2 stops34h 55m

Sat 5/1211:30 -

2 stops29h 05m

Deal found 24/8₹ 87,649

Mon 14/919:25 -

Nonstop13h 45m

Mon 21/919:15 -

1 stop17h 10m

Deal found 24/8₹ 90,513

Fri 29/118:45 -

Nonstop13h 20m

Sat 13/223:15 -

Nonstop14h 30m

Deal found 25/8₹ 91,086

Fri 27/1108:45 -

1 stop19h 10m

Sat 5/1215:05 -

1 stop33h 55m

Deal found 24/8₹ 92,996

Wed 16/921:55 -

1 stop16h 20m

Wed 23/923:25 -

Nonstop14h 10m

Deal found 25/8₹ 98,534

Find flight deals from United Kingdom to Southeast Asia

Round-trip from	₹ 62,825
One-way from	₹ 35,422
Popular in	December
Cheapest in	September
Average price	₹ 89,750

Air India
6/10-15/10
3 total stops
57h 30m total
United Kingdom to Southeast Asia

Search Deals

20/10
1 total stop
19h 55m total
United Kingdom to Southeast Asia

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (₹ 602,382 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (₹ 251,862 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Cheapflights Fare Finder

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 London Heathrow - IXZ Port Blair

LHRIXZ

London Heathrow

Sun 4/10

12:30-11:00

2 stops42h 00m

Port Blair

Mon 12/10

11:40-11:30

1 stop28h 20m

₹ 61,106

LondonPort Blair

LHR London Heathrow - IXZ Port Blair

LHRIXZ

London Heathrow

Sun 4/10

22:10-14:40

1 stop36h 00m

Port Blair

Sun 11/10

11:40-11:30

1 stop28h 20m

₹ 61,106

LondonPort Blair

LHR London Heathrow - IXZ Port Blair

LHRIXZ

London Heathrow

Sun 11/10

21:05-11:00

2 stops33h 25m

Port Blair

Sun 18/10

11:40-19:00

1 stop35h 50m

₹ 63,398

LondonPort Blair

LHR London Heathrow - IXZ Port Blair

LHRIXZ

London Heathrow

Sat 7/11

21:05-09:25

2 stops30h 50m

Port Blair

Sat 14/11

11:30-20:30

1 stop38h 30m

₹ 71,800

Fastest return journey

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Fri 12/2

18:45-16:05

Nonstop13h 20m

Singapore Changi

Thu 18/2

23:15-05:45

Nonstop14h 30m

₹ 76,574

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Mon 12/10

19:25-16:10

Nonstop13h 45m

Singapore Changi

Mon 19/10

23:25-06:35

Nonstop14h 10m

₹ 76,860

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Wed 3/2

08:40-16:15

1 stop23h 35m

Singapore Changi

Wed 17/2

01:40-10:45

1 stop17h 05m

₹ 77,624

LondonPort Blair

LHR London Heathrow - IXZ Port Blair

LHRIXZ

London Heathrow

Sun 4/10

12:30-14:40

2 stops45h 40m

Port Blair

Mon 12/10

10:35-06:55

3 stops24h 50m

₹ 77,719

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Sun 20/9

19:25-16:10

Nonstop13h 45m

Singapore Changi

Sun 27/9

23:25-06:35

Nonstop14h 10m

₹ 77,910

LondonPort Blair

LHR London Heathrow - IXZ Port Blair

LHRIXZ

London Heathrow

Sat 24/10

22:10-14:25

1 stop35h 45m

Port Blair

Tue 3/11

11:30-11:30

1 stop29h 30m

₹ 80,584

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 35 resultsSorted by cheapest first

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.

LHR-SIN

LHR-IXZ

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

GB0-zzYJX

LHR-SIN

LHR-IXZ

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 ₹ 81,825). Flying from United Kingdom to Southeast Asia in December is currently the most expensive (average of ₹ 132,906). 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?

It’s optimal to fly from United Kingdom to Southeast Asia in the morning. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight at midday.

Weekly flight availability from United Kingdom to Southeast Asia

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 45 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 a feel of what it's like to fly with Singapore Airlines,Cathay Pacific, andEtihad 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.

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

Singapore Airlines

8.2

Very Good

1,588 reviews

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

Cathay Pacific

7.6

Good

1,461 reviews

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

Etihad Airways

7.3

Good

1,522 reviews

Singapore Airlines

8.2

Very Good

1,588 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

Related info for your journey

How long is the flight from United Kingdom to Southeast Asia?
Airlines like Air India, KLM, and British Airways fly from United Kingdom to Southeast Asia in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 22h 15m. 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 ₹ 81,825). Flying from United Kingdom to Southeast Asia in December is currently the most expensive (average of ₹ 132,906). 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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Top 2 airlines flying from United Kingdom to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	Cheapest₹ 65,427	Average₹ 80,155	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
EVA Air	Cheapest₹ 92,349	Average₹ 117,664	FlexibilityNo cancel fee	On-time74%	Search EVA Air flights

Fly with Cheapflights

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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Cheap flights from the United Kingdom to Southeast Asia from ₹ 35,422

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 20/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from United Kingdom to Southeast Asia

Cheapest flights from United Kingdom to Southeast AsiaExplore 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 28 August 2026.

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 28 August 2026.

Best flights from United Kingdom to Southeast AsiaDiscover carefully curated flight deals from United Kingdom to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 August 2026.

Discover carefully curated flight deals from United Kingdom to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 August 2026.

Direct flights from United Kingdom to Southeast AsiaExplore direct flight options from United Kingdom to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 August 2026.

Explore direct flight options from United Kingdom to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 August 2026.

Last-minute flights from United Kingdom to Southeast AsiaDiscover last-minute flight deals from United Kingdom to Southeast Asia. Data last updated 28 August 2026 and is based on user searches.

Discover last-minute flight deals from United Kingdom to Southeast Asia. Data last updated 28 August 2026 and is based on user searches.

One-way flights from United Kingdom to Southeast AsiaSearch for one-way flight options from United Kingdom to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 28 August 2026.

Search for one-way flight options from United Kingdom to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 28 August 2026.

Find flight deals from United Kingdom to Southeast Asia

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Southeast Asia that are best for you.

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.

Cheapflights Insights

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

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 28 August 2026.

It’s optimal to fly from United Kingdom to Southeast Asia in the morning. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight at midday.

Weekly flight availability from United Kingdom to Southeast Asia

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 45 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

Related info for your journey

How long is the flight from United Kingdom to Southeast Asia?

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

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

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

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

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 United Kingdom to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Southeast Asia by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from United Kingdom to Southeast Asia by cabin class

Find flights from United Kingdom to Southeast Asia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

United Kingdom and Southeast Asia flights

Browse other United Kingdom and Southeast Asia flight options. Last updated on 28 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from Southeast Asia

Find the right flight back to United Kingdom after your stay in Southeast Asia

United Kingdom to Southeast Asia flights

Consider these flights travelling from United Kingdom to Southeast Asia.

Top 2 airlines flying from United Kingdom to Southeast Asia

Fly with Cheapflights

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

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

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

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

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Travel Smart

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 28 August 2026.

Best flights from United Kingdom to Southeast Asia
Discover carefully curated flight deals from United Kingdom to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 August 2026.

Direct flights from United Kingdom to Southeast Asia
Explore direct flight options from United Kingdom to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 August 2026.

Last-minute flights from United Kingdom to Southeast Asia
Discover last-minute flight deals from United Kingdom to Southeast Asia. Data last updated 28 August 2026 and is based on user searches.

One-way flights from United Kingdom to Southeast Asia
Search for one-way flight options from United Kingdom to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 28 August 2026.