How long is the flight from London to Southeast Asia?

For as low as S$ 812, Shenzhen Airlines can have you in Southeast Asia from London in 15h 20m. The distance between London and Southeast Asia is about 10863 km. This flight may include one or multiple stops. Find deals

What are the cheapest airlines to fly from London to Southeast Asia one-way?

The cheapet airlines for a one-way flight from London to Southeast Asia are Gulf Air (S$ 533), Shenzhen Airlines (S$ 546), and SWISS (S$ 581). Find deals

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).

What are the most popular routes from London to Southeast Asia?

The most popular flight routes from London to Southeast Asia are London Heathrow - Singapore Changi, London Gatwick - Singapore Changi and London Stansted - Singapore Changi.

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

Consider EVA Air (78%), Thai Airways (74%) or Air Canada (68%) when booking your flight. These represent the most reliable airlines when flying from London to Southeast Asia.

What are the most popular airlines that fly from London to Southeast Asia?

When booking a flight from London to Southeast Asia, you may want to consider flying on Singapore Airlines, British Airways or Lufthansa as they are the most popular for this route.

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.

S$ 508+ Cheap Flights from London to Southeast Asia

Find 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 15 October 2025.

Sat 29-1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Tue 9-1203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 13-10S$ 770

Wed 29-1021:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Thu 27-1103:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 15-10S$ 772

Wed 29-1021:10LHR - BKK

1 stop38h 20mShenzhen Airlines

Thu 13-1119:30BKK - LHR

1 stop30h 40mShenzhen Airlines

Deal found 14-10S$ 773

Fri 7-1121:10LHR - BKK

1 stop38h 20mShenzhen Airlines

Fri 21-1119:30BKK - LHR

1 stop30h 40mShenzhen Airlines

Deal found 13-10S$ 774

Sat 29-1121:10LHR - BKK

1 stop31h 00mShenzhen Airlines

Sat 20-1212:10BKK - LHR

1 stop38h 00mShenzhen Airlines

Deal found 13-10S$ 776

Wed 12-1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Tue 18-1103:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 15-10S$ 780

Fri 24-1022:00LHR - SIN

2 stops22h 10mHainan Airlines

Sun 26-1015:45SIN - LHR

2 stops34h 10mHainan Airlines

Deal found 13-10S$ 785

Mon 17-1106:30LHR - SIN

2 stops37h 10mMultiple Airlines

Wed 3-1206:00SIN - LHR

1 stop17h 25mMultiple Airlines

Deal found 13-10S$ 786

Fri 14-1121:00LHR - SIN

2 stops22h 10mHainan Airlines

Wed 10-1204:40SIN - LHR

2 stops44h 55mHainan Airlines

Deal found 13-10S$ 787

Thu 6-1111:05LGW - SIN

1 stop21h 10mAir China

Sun 16-1117:50SIN - LGW

1 stop21h 05mAir China

Deal found 13-10S$ 787

Wed 12-1111:30LHR - SIN

2 stops21h 50mMultiple Airlines

Mon 17-1106:00SIN - LHR

1 stop17h 25mMultiple Airlines

Deal found 14-10S$ 789

Sun 26-1021:10LHR - SIN

1 stop31h 00mShenzhen Airlines

Tue 28-1003:00SIN - LHR

1 stop24h 10mShenzhen Airlines

Deal found 14-10S$ 790

Best flights from London to Southeast Asia
Discover carefully curated flight deals from London to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 October 2025.

Fri 28-1121:10LHR - BKK

1 stop22h 05mShenzhen Airlines

Tue 16-1203:15BKK - LHR

1 stop22h 55mShenzhen Airlines

Deal found 13-10S$ 773

Thu 29-122:15LHR - SIN

1 stop21h 05mMultiple Airlines

Sun 8-202:45SIN - LHR

1 stop23h 10mMultiple Airlines

Deal found 13-10S$ 812

Thu 19-318:40LGW - SIN

1 stop15h 20mSWISS

Sun 22-300:05SIN - LGW

1 stop25h 45mSWISS

Deal found 14-10S$ 812

Sun 8-310:35LGW - SIN

1 stop17h 55mGulf Air

Thu 26-320:25SIN - LGW

1 stop17h 55mGulf Air

Deal found 15-10S$ 824

Mon 17-1113:55LHR - SIN

1 stop35h 40mEtihad Airways

Sat 24-119:25SIN - LHR

1 stop19h 15mEtihad Airways

Deal found 12-10S$ 829

Thu 19-317:15LCY - SIN

1 stop15h 40mLufthansa

Mon 23-323:55SIN - LCY

1 stop17h 20mLufthansa

Deal found 13-10S$ 851

Thu 15-122:05LHR - BKK

1 stop18h 25mSAUDIA

Tue 14-415:25BKK - LHR

1 stop22h 05mSAUDIA

Deal found 14-10S$ 906

Wed 26-1117:05LHR - SIN

2 stops19h 30mKLM

Wed 3-1221:20SIN - LHR

2 stops18h 20mKLM

Deal found 12-10S$ 922

Wed 5-1106:25LGW - SIN

1 stop18h 20mTurkish Airlines

Wed 19-1123:25SIN - LGW

1 stop18h 00mTurkish Airlines

Deal found 14-10S$ 980

Thu 19-317:00LGW - SIN

1 stop19h 25mChina Eastern

Mon 23-312:40SIN - LGW

2 stops33h 20mChina Eastern

Deal found 14-10S$ 986

Thu 19-321:05LHR - HKT

1 stop28h 00mAir India

Sun 22-320:30HKT - LHR

1 stop17h 05mAir India

Deal found 14-10S$ 1,048

Sat 25-1018:10LHR - BKK

1 stop37h 05mFinnair

Wed 19-1108:00BKK - LHR

1 stop32h 10mFinnair

Deal found 14-10S$ 1,102

Wed 5-1120:15STN - SIN

1 stop17h 30mEmirates

Tue 18-1100:30SIN - STN

1 stop19h 35mEmirates

Deal found 14-10S$ 1,191

Wed 4-321:20LHR - BKK

Nonstop11h 40mEVA Air

Fri 20-312:40BKK - LHR

Nonstop13h 25mEVA Air

Deal found 14-10S$ 1,272

Tue 11-1114:00LTN - SIN

2 stops43h 20mMultiple Airlines

Mon 17-1102:45SIN - LTN

1 stop21h 35mMultiple Airlines

Deal found 14-10S$ 820

Thu 27-1118:40LHR - SIN

1 stop15h 20mSWISS

Wed 3-1200:05SIN - LHR

1 stop16h 00mSWISS

Deal found 13-10S$ 846

Wed 29-1010:35LGW - SIN

1 stop17h 55mGulf Air

Sat 15-1120:25SIN - LGW

1 stop17h 55mGulf Air

Deal found 14-10S$ 860

Fri 31-1021:10LHR - SIN

1 stop31h 00mShenzhen Airlines

Thu 13-1113:10SIN - LHR

1 stop38h 00mShenzhen Airlines

Deal found 14-10S$ 889

Sun 11-120:50LTN - SIN

2 stops35h 25mMultiple Airlines

Sat 24-117:50SIN - LTN

2 stops33h 35mMultiple Airlines

Deal found 14-10S$ 820

Mon 5-108:50LHR - HKT

1 stop31h 15mEtihad Airways

Sun 25-103:10HKT - LHR

1 stop18h 20mEtihad Airways

Deal found 14-10S$ 925

Thu 19-317:45LCY - SIN

1 stop16h 15mSWISS

Sun 22-300:05SIN - LCY

1 stop26h 35mSWISS

Deal found 14-10S$ 848

Fri 5-1210:35LGW - SIN

1 stop17h 55mGulf Air

Tue 16-1220:25SIN - LGW

1 stop18h 05mGulf Air

Deal found 13-10S$ 870

Fri 30-121:10LHR - SIN

1 stop20h 50mShenzhen Airlines

Fri 13-203:00SIN - LHR

1 stop24h 10mShenzhen Airlines

Deal found 11-10S$ 890

Thu 27-1117:05LCY - SIN

1 stop15h 10mKLM

Wed 10-1221:20SIN - LCY

2 stops17h 55mKLM

Deal found 13-10S$ 993

Thu 27-1106:25LGW - SIN

1 stop19h 35mTurkish Airlines

Thu 4-1210:25SIN - LGW

1 stop20h 10mTurkish Airlines

Deal found 13-10S$ 993

Sun 23-1114:30LTN - SIN

1 stop28h 50mMultiple Airlines

Fri 5-1202:45SIN - LTN

1 stop21h 35mMultiple Airlines

Deal found 13-10S$ 822

Thu 5-319:20LHR - HKT

1 stop15h 35mEtihad Airways

Tue 17-303:10HKT - LHR

1 stop15h 55mEtihad Airways

Deal found 14-10S$ 941

Thu 5-318:40LHR - SIN

1 stop15h 20mSWISS

Wed 18-300:05SIN - LHR

2 stops21h 35mSWISS

Deal found 12-10S$ 861

Mon 1-1221:50LHR - SIN

1 stop30h 40mGulf Air

Wed 17-1220:25SIN - LHR

1 stop26h 20mGulf Air

Deal found 13-10S$ 881

Thu 19-321:00LHR - HKT

1 stop18h 45mChina Eastern

Sat 21-300:05HKT - LHR

2 stops24h 25mChina Eastern

Deal found 12-10S$ 1,078

Direct flights from London to Southeast Asia
Explore direct flight options from London to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 October 2025.

Thu 27-1110:40LHR - SIN

Nonstop13h 10mSingapore Airlines

Tue 23-1201:10SIN - LHR

Nonstop14h 30mSingapore Airlines

Deal found 13-10S$ 925

Mon 2-209:25LGW - SIN

Nonstop12h 50mSingapore Airlines

Tue 10-223:55SIN - LGW

Nonstop14h 30mSingapore Airlines

Deal found 14-10S$ 942

Thu 15-109:10LHR - SIN

Nonstop13h 00mSingapore Airlines

Thu 29-109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 15-10S$ 956

Wed 18-221:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Wed 4-309:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 14-10S$ 958

Tue 3-309:10LHR - SIN

Nonstop13h 00mSingapore Airlines

Tue 10-312:45SIN - LHR

Nonstop14h 25mSingapore Airlines

Deal found 14-10S$ 963

Tue 27-109:20LGW - SIN

Nonstop12h 55mSingapore Airlines

Wed 4-223:55SIN - LGW

Nonstop14h 30mSingapore Airlines

Deal found 14-10S$ 972

Thu 27-1121:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Tue 23-1209:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 14-10S$ 973

Wed 18-209:20LGW - SIN

Nonstop12h 55mSingapore Airlines

Wed 4-323:55SIN - LGW

Nonstop14h 30mSingapore Airlines

Deal found 13-10S$ 973

Tue 17-221:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Thu 26-212:45SIN - LHR

Nonstop14h 25mSingapore Airlines

Deal found 14-10S$ 976

Tue 13-110:40LHR - SIN

Nonstop13h 10mSingapore Airlines

Mon 26-109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 14-10S$ 990

Tue 13-110:40LHR - SIN

Nonstop13h 10mSingapore Airlines

Sun 25-109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 14-10S$ 991

Thu 13-1121:45LHR - SIN

Nonstop13h 15mSingapore Airlines

Thu 20-1109:00SIN - LHR

Nonstop14h 20mSingapore Airlines

Deal found 15-10S$ 994

Last-minute flights from London to Southeast Asia
Discover last-minute flight deals from London to Southeast Asia. Data last updated 15 October 2025 and is based on user searches.

Mon 20-1021:45LHR - SIN

1 stop28h 55mEtihad Airways

Tue 28-1019:25SIN - LHR

1 stop24h 40mEtihad Airways

Deal found 14-10S$ 825

Tue 21-1019:30LHR - SIN

2 stops38h 45mMultiple Airlines

Tue 28-1006:00SIN - LHR

1 stop17h 25mMultiple Airlines

Deal found 14-10S$ 819

Tue 21-1007:10LGW - SIN

2 stops43h 30mMultiple Airlines

Tue 28-1017:35SIN - LGW

1 stop32h 55mMultiple Airlines

Deal found 14-10S$ 900

Tue 21-1009:30LHR - BKK

1 stop15h 00mEtihad Airways

Mon 17-1102:55BKK - LHR

1 stop16h 10mEtihad Airways

Deal found 13-10S$ 903

Tue 21-1007:10LGW - SIN

2 stops43h 30mMultiple Airlines

Wed 29-1006:40SIN - LGW

1 stop19h 50mMultiple Airlines

Deal found 14-10S$ 912

Wed 22-1022:00LHR - SIN

1 stop34h 30mHainan Airlines

Sat 29-1104:40SIN - LHR

2 stops45h 15mHainan Airlines

Deal found 13-10S$ 811

Wed 22-1006:40LHR - SIN

2 stops27h 35mMultiple Airlines

Mon 19-106:00SIN - LHR

1 stop17h 25mMultiple Airlines

Deal found 13-10S$ 812

Thu 23-1017:00LHR - SIN

2 stops41h 15mMultiple Airlines

Mon 19-106:00SIN - LHR

1 stop17h 25mMultiple Airlines

Deal found 13-10S$ 809

Fri 24-1022:00LHR - SIN

2 stops22h 10mHainan Airlines

Sun 26-1015:45SIN - LHR

2 stops34h 10mHainan Airlines

Deal found 13-10S$ 785

Fri 24-1022:00LHR - SIN

1 stop22h 10mMultiple Airlines

Fri 7-1106:00SIN - LHR

1 stop17h 25mMultiple Airlines

Deal found 14-10S$ 828

Fri 24-1022:00LHR - SIN

2 stops30h 10mMultiple Airlines

Tue 28-1006:00SIN - LHR

1 stop17h 25mMultiple Airlines

Deal found 12-10S$ 841

Fri 24-1006:40LHR - SIN

2 stops27h 35mMultiple Airlines

Mon 19-106:00SIN - LHR

1 stop17h 25mMultiple Airlines

Deal found 13-10S$ 880

One-way flights from London to Southeast Asia
Search for one-way flight options from London to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 15 October 2025.

Mon 27-1021:00LHR - SIN

2 stops22h 10mHainan Airlines

Deal found 14-10S$ 508

Fri 7-1110:35LGW - SIN

1 stop17h 55mGulf Air

Deal found 14-10S$ 508

Wed 7-105:45LTN - SIN

3 stops47h 35mMultiple Airlines

Deal found 14-10S$ 511

Sun 14-1206:25LGW - SIN

1 stop36h 55mMultiple Airlines

Deal found 14-10S$ 511

Mon 23-308:45STN - SIN

2 stops24h 35mMultiple Airlines

Deal found 14-10S$ 512

Thu 13-1111:30LHR - SIN

3 stops26h 00mMultiple Airlines

Deal found 14-10S$ 512

Sun 2-1121:15LHR - SIN

1 stop21h 55mHainan Airlines

Deal found 12-10S$ 513

Tue 4-1111:05LGW - SIN

1 stop21h 10mAir China

Deal found 14-10S$ 513

Sat 22-1121:45STN - SIN

2 stops27h 50mMultiple Airlines

Deal found 14-10S$ 514

Thu 6-1120:00LTN - SIN

2 stops29h 35mMultiple Airlines

Deal found 14-10S$ 514

Fri 7-1121:00LHR - SIN

1 stop30h 10mHainan Airlines

Deal found 14-10S$ 514

Sun 11-114:35LGW - SIN

2 stops43h 00mMultiple Airlines

Deal found 13-10S$ 514

Cheap flight deals from London to Southeast Asia

Round-trip from	S$ 770
One-way from	S$ 508
Popular in	December
Cheapest in	May
Average price	S$ 1,002

Shenzhen Airlines
29-11-9-12
2 total stops
45h 00m total
London to Southeast Asia

Search Deals

Hainan Airlines
27-10
2 total stops
22h 10m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (S$ 145 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (S$ 52 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Cheapflights Fare Finder

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

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 28-11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Tue 16-12

03:15-19:10

1 stop22h 55m

S$ 773

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 29-1

22:15-03:20

1 stop21h 05m

Singapore Changi

Sun 8-2

02:45-17:55

1 stop23h 10m

S$ 812

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Thu 19-3

18:40-18:00

1 stop15h 20m

Singapore Changi

Sun 22-3

00:05-17:50

1 stop25h 45m

S$ 812

LondonSingapore

LTN - SIN

LTNSIN

London Luton

Tue 11-11

14:00-17:20

2 stops43h 20m

Singapore Changi

Mon 17-11

02:45-16:20

1 stop21h 35m

S$ 820

LondonSingapore

LTN - SIN

LTNSIN

London Luton

Sun 11-1

20:50-16:15

2 stops35h 25m

Singapore Changi

Sat 24-1

17:50-19:25

2 stops33h 35m

S$ 820

LondonSingapore

LTN - SIN

LTNSIN

London Luton

Sun 23-11

14:30-03:20

1 stop28h 50m

Singapore Changi

Fri 5-12

02:45-16:20

1 stop21h 35m

S$ 822

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sun 8-3

10:35-12:30

1 stop17h 55m

Singapore Changi

Thu 26-3

20:25-06:20

1 stop17h 55m

S$ 824

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 17-11

13:55-09:35

1 stop35h 40m

Singapore Changi

Sat 24-1

19:25-06:40

1 stop19h 15m

S$ 829

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 27-11

18:40-18:00

1 stop15h 20m

Singapore Changi

Wed 3-12

00:05-08:05

1 stop16h 00m

S$ 846

LondonSingapore

LCY - SIN

LCYSIN

London City

Thu 19-3

17:45-18:00

1 stop16h 15m

Singapore Changi

Sun 22-3

00:05-18:40

1 stop26h 35m

S$ 848

Flights are sorted by cheapest return flights first.

Deals found on 14-10

Showing 1-10 of 60 results

...

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 S$ 586). Flying from London to Southeast Asia in July is currently the most expensive (average of S$ 909). 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?

One of the essential ways to save on airfare from London to Southeast Asia is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 8% on airfare.

Weekly flight availability from London to Southeast Asia

The most flights from LON 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

Read reviews from past customers who have flown with Singapore Airlines, SAUDIA, andGulf Air from London to Southeast Asia. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.1

Very Good

1,381 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Singapore Airlines

8.1

Very Good

1,381 reviews

Singapore Airlines

8.1

Very Good

1,381 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

SAUDIA

7.4

Good

635 reviews

Singapore Airlines

8.1

Very Good

1,381 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Gulf Air

7.2

Good

213 reviews

Singapore Airlines

8.1

Very Good

1,381 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Lufthansa

6.8

Okay

7,491 reviews

Singapore Airlines

8.1

Very Good

1,381 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

British Airways

6.7

Okay

7,455 reviews

Singapore Airlines

8.1

Very Good

1,381 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Related info for your journey

How long is the flight from London to Southeast Asia?
For as low as S$ 812, Shenzhen Airlines can have you in Southeast Asia from London in 15h 20m. The distance between London and Southeast Asia is about 10863 km. This flight may include one or multiple stops.
What are the cheapest airlines to fly from London to Southeast Asia one-way?
The cheapet airlines for a one-way flight from London to Southeast Asia are Gulf Air (S$ 533), Shenzhen Airlines (S$ 546), and SWISS (S$ 581).
What are the most popular routes from London to Southeast Asia?
The most popular flight routes from London to Southeast Asia are London Heathrow - Singapore Changi, London Gatwick - Singapore Changi and London Stansted - Singapore Changi.
What are the most reliable airlines from London to Southeast Asia?
Consider EVA Air (78%), Thai Airways (74%) or Air Canada (68%) when booking your flight. These represent the most reliable airlines 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, May is the cheapest month in which you can book a flight from London to Southeast Asia (average of S$ 586). Flying from London to Southeast Asia in July is currently the most expensive (average of S$ 909). 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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Direct flights to

Top 7 airlines flying from London to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	CheapestS$ 799	AverageS$ 1,271	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
SWISS	CheapestS$ 816	AverageS$ 1,337	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
British Airways	CheapestS$ 837	AverageS$ 1,224	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Gulf Air	CheapestS$ 855	AverageS$ 975	FlexibilityNo cancel fee	On-time67%	Search Gulf Air flights
Singapore Airlines	CheapestS$ 948	AverageS$ 1,466	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Lufthansa	CheapestS$ 971	AverageS$ 1,721	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Qantas Airways	CheapestS$ 1,027	AverageS$ 1,710	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

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When you search for this flight from London to Southeast Asia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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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 London to Southeast Asia.

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Cheap flights from London to Southeast Asia from S$ 508

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 27-10. Fares are subject to change and may not be available on all flights or dates of travel.

Find flight deals from London to Southeast Asia

Cheapest flights from London to Southeast AsiaExplore 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 15 October 2025.

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 15 October 2025.

Cheap 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 15 October 2025.

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Cheapflights Fare Finder

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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.

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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?

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 15 October 2025.

Weekly flight availability from London to Southeast Asia

Reviews of airlines servicing Southeast Asia

Read reviews from past customers who have flown with Singapore Airlines, SAUDIA, andGulf Air from London to Southeast Asia. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

What are the cheapest airlines to fly from London to Southeast Asia one-way?

What are the most popular routes from London to Southeast Asia?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 7 airlines flying from London to Southeast Asia

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

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

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

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

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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 15 October 2025.