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Southeast Asia

$332+ Cheap flights from London (LON) to Southeast Asia

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from London to Southeast Asia

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 December 18, 2025.

This Air China deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:35 pmLHR - BKK
1 stop31h 55mAir China
Wed 1/75:55 pmBKK - LHR
1 stop32h 45mAir China
Deal found 12/17$609
This CheapOair deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:30 amLGW - BKK
1 stop34h 35mChina Eastern
Fri 1/237:55 pmBKK - LGW
1 stop25h 05mChina Eastern
Deal found 12/17$756
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:15 pmLHR - BKK
1 stop37h 50mHainan Airlines
Tue 1/137:10 pmBKK - LHR
1 stop28h 10mHainan Airlines
Deal found 12/16$760
This FlightHub deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/269:00 pmLHR - BKK
1 stop24h 05mChina Eastern
Mon 2/27:55 pmBKK - LHR
1 stop28h 35mChina Eastern
Deal found 12/16$775
This Etihad Airways deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:50 amLHR - HKT
1 stop26h 05mEtihad Airways
Tue 1/139:05 amHKT - LHR
1 stop28h 35mEtihad Airways
Deal found 12/17$777
This Booking.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:00 pmLHR - HAN
1 stop21h 45mChina Eastern
Fri 1/236:45 pmHAN - LHR
1 stop29h 45mChina Eastern
Deal found 12/17$790
This CheapOair deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:00 pmLHR - BKK
1 stop24h 05mChina Eastern
Fri 1/237:05 pmBKK - LHR
1 stop29h 25mChina Eastern
Deal found 12/16$798
This Gotogate deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:10 pmLHR - HAN
2 stops37h 30mMultiple Airlines
Thu 1/222:35 amHAN - LHR
2 stops21h 55mMultiple Airlines
Deal found 12/17$800
This Etihad Airways deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:50 amLHR - BKK
1 stop31h 35mEtihad Airways
Wed 1/219:15 amBKK - LHR
1 stop15h 55mEtihad Airways
Deal found 12/17$813
This FlightHub deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:25 amLHR - BKK
1 stop15h 20mOman Air
Sun 2/89:00 amBKK - LHR
1 stop16h 25mOman Air
Deal found 12/17$817
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:15 amLGW - BKK
2 stops20h 35mMultiple Airlines
Fri 2/274:20 amBKK - LGW
1 stop16h 50mMultiple Airlines
Deal found 12/16$819
This Etihad Airways deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:50 amLHR - BKK
1 stop31h 35mEtihad Airways
Fri 2/68:55 amBKK - LHR
1 stop34h 10mEtihad Airways
Deal found 12/17$824

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 December 18, 2025.

Round-trip from

$534
(FlightHub)

One-way from

$332
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,247
From London (LON) to Southeast Asia
Search Deals
One-way flight from London (LON) to Southeast Asia
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

London

Fly to

Southeast Asia

Route

Depart

Return

Price

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 5/5

10:15 pm-4:05 pm

Nonstop11h 50m

Bangkok Suvarnabhumi

Wed 5/20

10:35 pm-5:55 am

Nonstop13h 20m

$614

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sat 5/9

10:15 pm-4:05 pm

Nonstop11h 50m

Bangkok Suvarnabhumi

Wed 5/20

10:35 pm-5:55 am

Nonstop13h 20m

$614

LondonHo Chi Minh City

LHR - SGN

LHRSGN

London Heathrow

Fri 3/6

9:10 pm-1:50 am

1 stop21h 40m

Ho Chi Minh City

Fri 3/20

2:50 am-7:10 pm

1 stop23h 20m

$616

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Sun 3/1

9:10 pm-1:10 am

1 stop21h 00m

Hanoi Noibai

Thu 3/19

2:10 am-7:10 pm

1 stop24h 00m

$621

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Wed 1/14

9:10 pm-1:40 am

1 stop20h 30m

Manila Ninoy Aquino Intl

Sat 1/24

2:55 am-7:10 pm

1 stop24h 15m

$660

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Mon 5/11

6:35 pm-5:05 pm

1 stop15h 30m

Singapore Changi

Sun 5/17

11:30 pm-8:20 am

1 stop15h 50m

$670

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Wed 1/14

10:35 am-12:30 pm

1 stop17h 55m

Singapore Changi

Sat 1/24

8:00 pm-6:20 am

1 stop18h 20m

$678

LondonHo Chi Minh City

LHR - SGN

LHRSGN

London Heathrow

Sun 1/18

9:10 pm-1:50 am

1 stop21h 40m

Ho Chi Minh City

Thu 1/22

2:50 am-7:10 pm

1 stop23h 20m

$679

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 1/22

9:50 pm-12:30 pm

1 stop30h 40m

Singapore Changi

Mon 1/26

8:00 pm-2:45 pm

1 stop26h 45m

$691

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 5/4

2:55 pm-6:20 pm

1 stop21h 25m

Bangkok Suvarnabhumi

Wed 5/20

10:35 pm-5:55 am

Nonstop13h 20m

$691

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 60 results
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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.
Estimated round-trip 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 $448). Flying from London to Southeast Asia in July is currently the most expensive (average of $687). 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 December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from London to Southeast Asia in the afternoon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from London to Southeast Asia?

Use this chart to determine the cheapest time to fly round-trip from London to Southeast Asia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their London to Southeast Asia flight should consider departing on Monday evenings when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.

The most flights from LON to zzYJX are scheduled on a Monday (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 December 18, 2025.
Read through reviews of airlines operating flights from London to Southeast Asia, such as Singapore Airlines, China Southern, and Qatar Airways. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,414 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.1

Crew

8.6

Food

7.8

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
8.1
Very good
1,414 reviews
Singapore Airlines
8.1
Very good
1,414 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.1

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
China Southern
7.5
Good
122 reviews
Singapore Airlines
8.1
Very good
1,414 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.1

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Qatar Airways
7.4
Good
3,686 reviews
Singapore Airlines
8.1
Very good
1,414 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.1

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
China Eastern
7.2
Good
178 reviews
Singapore Airlines
8.1
Very good
1,414 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.1

Crew

8.6

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Air China
7.1
Good
129 reviews
Singapore Airlines
8.1
Very good
1,414 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.1

Crew

8.6

Food

7.8

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

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?

    China Southern, British Airways, and China Eastern can get you from London to Southeast Asia in just under 11h 50m. Your travel time can differ by up to 14h 05m. The distance from London to Southeast Asia is about 5942 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    To fly one-way, consider booking your trip with SAUDIA, which is currently one of the cheapest options available, starting at $292. Shenzhen Airlines flights start at $320 while deals on China Eastern start at $328 one-way.

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

    When deciding which route to take from London to Southeast Asia consider London Heathrow - Bangkok Suvarnabhumi, London Gatwick - Bangkok Suvarnabhumi or London Heathrow - Langkawi as they are the most popular.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Southeast Asia on time: EVA Air (88%), Thai Airways (84%), Air Canada (80%).

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

    On average you can expect to pay $2,264 for a flight from London to Southeast Asia. The cheapest flight overall is $636 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at $506.

  • 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 vacation 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 $448). Flying from London to Southeast Asia in July is currently the most expensive (average of $687). 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 London to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from London to Southeast Asia

Discover the top 10 airlines that operate flights from London 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 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest$407Average$816FlexibilityNo cancel feeOn-time86%
Shenzhen AirlinesCheapest$457Average$555FlexibilityNo cancel feeOn-time63%
Gulf AirCheapest$462Average$772FlexibilityNo cancel feeOn-time67%
Air IndiaCheapest$472Average$827FlexibilityNo cancel feeOn-timeN/A
China EasternCheapest$490Average$696FlexibilityNo cancel feeOn-time62%
Norse Atlantic UKCheapest$496Average$696FlexibilityNo cancel feeOn-timeN/A
China SouthernCheapest$559Average$697FlexibilityNo cancel feeOn-time69%
Hainan AirlinesCheapest$560Average$848FlexibilityNo cancel feeOn-time61%
British AirwaysCheapest$620Average$1,006FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$641Average$925FlexibilityNo cancel feeOn-time78%

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