Southeast Asia

$359+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
Mar 5 — Mar 121
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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 February 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/117:45 pm
LHR
-
HAN
1 stop19h 25m
Hainan Airlines
Sun 3/1511:15 pm
HAN
-
LHR
2 stops25h 40m
Hainan Airlines
Deal found 2/1$518
This Gotogate deal was found by Cheapflights users on 2/1. 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.
Mon 5/2510:00 pm
LHR
-
BKK
2 stops30h 00m
Hainan Airlines
Sun 6/217:20 pm
BKK
-
LHR
2 stops30h 10m
Hainan Airlines
Deal found 2/1$547
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/510:00 pm
LHR
-
BKK
2 stops30h 00m
Hainan Airlines
Thu 7/27:20 pm
BKK
-
LHR
2 stops30h 10m
Hainan Airlines
Deal found 2/2$549
This Trip.com deal was found by Cheapflights users on 2/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/135:40 pm
LHR
-
BKK
1 stop17h 25m
Air China
Mon 3/301:30 am
BKK
-
LHR
1 stop24h 55m
Air China
Deal found 2/3$550
This China Eastern deal was found by Cheapflights users on 2/2. 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 China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1211:35 am
LGW
-
BKK
2 stops21h 20m
China Eastern
Sun 5/38:50 pm
BKK
-
LGW
2 stops39h 50m
China Eastern
Deal found 2/2$551
This Mytrip deal was found by Cheapflights users on 1/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:00 pm
LHR
-
BKK
2 stops30h 00m
Hainan Airlines
Tue 5/511:05 am
BKK
-
LHR
1 stop38h 25m
Hainan Airlines
Deal found 1/31$551
This China Eastern deal was found by Cheapflights users on 2/1. 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 China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:00 pm
LGW
-
BKK
1 stop24h 55m
China Eastern
Mon 11/27:50 am
BKK
-
LGW
3 stops29h 40m
China Eastern
Deal found 2/1$554
This Booking.com deal was found by Cheapflights users on 2/1. 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.
Mon 6/18:25 pm
LHR
-
BKK
1 stop21h 45m
Air China
Sat 6/67:35 pm
BKK
-
LHR
1 stop30h 50m
Air China
Deal found 2/1$554
This Air China deal was found by Cheapflights users on 2/3. 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.
Tue 6/28:25 pm
LHR
-
BKK
1 stop21h 45m
Air China
Mon 6/81:30 am
BKK
-
LHR
1 stop24h 55m
Air China
Deal found 2/3$555
This China Eastern deal was found by Cheapflights users on 2/3. 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 China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/77:00 pm
LGW
-
BKK
1 stop17h 05m
China Eastern
Mon 6/88:50 pm
BKK
-
LGW
2 stops48h 10m
China Eastern
Deal found 2/3$556
This SmartFares deal was found by Cheapflights users on 2/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1512:35 pm
LGW
-
BKK
1 stop23h 45m
Air China
Tue 7/77:35 pm
BKK
-
LGW
1 stop17h 00m
Air China
Deal found 2/1$557
This Gotogate deal was found by Cheapflights users on 2/3. 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.
Wed 4/810:00 pm
LHR
-
BKK
1 stop30h 00m
Hainan Airlines
Thu 4/307:20 pm
BKK
-
LHR
2 stops30h 10m
Hainan Airlines
Deal found 2/3$557

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 February 3, 2026.

Round-trip from

$518
(Kiwi.com)

One-way from

$359
(Mytrip)

Popular in

December

Cheapest in

May

Average price

$838
From London (LON) to Southeast Asia
One-way flight from London (LON) to Southeast Asia
Highest demand for flights based on searches. 4% potential increase in price ($43 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Average for round-trip flights in February 2026

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 February 3, 2026.
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

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Sun 3/8

9:00 pm-2:10 pm

1 stop34h 10m

Hanoi Noibai

Mon 3/16

3:10 pm-5:30 pm

1 stop33h 20m

$561

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Wed 3/11

10:30 am-3:55 pm

1 stop22h 25m

Bangkok Suvarnabhumi

Sat 3/14

1:35 pm-2:00 pm

1 stop31h 25m

$566

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Mon 3/9

9:00 pm-10:45 pm

1 stop18h 45m

Phuket City

Sun 3/15

7:45 pm-5:30 pm

3 stops52h 45m

$570

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Tue 5/26

9:20 pm-5:45 pm

1 stop38h 25m

Hanoi Noibai

Wed 6/3

3:00 pm-6:40 pm

1 stop33h 40m

$580

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Wed 5/27

9:20 pm-1:20 am

1 stop22h 00m

Hanoi Noibai

Tue 6/2

6:45 pm-6:40 pm

1 stop29h 55m

$580

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Tue 5/26

9:20 pm-1:20 am

1 stop22h 00m

Hanoi Noibai

Wed 6/3

2:20 am-6:40 pm

1 stop22h 20m

$580

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Tue 5/26

9:20 pm-5:45 pm

1 stop38h 25m

Hanoi Noibai

Mon 6/1

3:00 pm-6:40 pm

1 stop33h 40m

$580

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 5/1

10:05 pm-2:15 am

1 stop22h 10m

Bangkok Suvarnabhumi

Sat 5/16

7:30 pm-8:00 pm

1 stop30h 30m

$634

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Wed 3/11

9:10 pm-2:00 am

1 stop20h 50m

Singapore Changi

Sun 3/15

6:40 pm-7:10 pm

1 stop32h 30m

$675

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 4/20

1:15 pm-4:55 pm

1 stop21h 40m

Bangkok Suvarnabhumi

Thu 4/23

8:20 pm-10:15 am

1 stop19h 55m

$691

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of $437). Flying from London to Southeast Asia in July is currently the most expensive (average of $671). 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 February 3, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Southeast Asia as you normally would.

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 February 3, 2026.

The most flights from LON to zzYJX are scheduled on a Tuesday (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 February 3, 2026.
Read through reviews of airlines operating flights from London to Southeast Asia, such as Singapore Airlines, Qatar Airways, and China Southern. 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.

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

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

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

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

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

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

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

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

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

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

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Comfort

8.0

Entertainment

8.0

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?

    Hainan Airlines, Air China, and China Eastern can get you from London to Southeast Asia in just under 17h 25m. Your travel time can differ by up to 4h 35m. The distance from London to Southeast Asia is about 5947 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 Shenzhen Airlines, which is currently one of the cheapest options available, starting at $207. SAUDIA flights start at $292 while deals on China Eastern start at $328 one-way.

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

  • 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: Thai Airways (82%), EVA Air (80%), Air Canada (79%).

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

    On average you can expect to pay $2,418 for a flight from London to Southeast Asia. The cheapest flight overall is $633 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at $516.

  • 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, November is the cheapest month in which you can book a flight from London to Southeast Asia (average of $437). Flying from London to Southeast Asia in July is currently the most expensive (average of $671). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest$407Average$816FlexibilityNo cancel feeOn-time86%
Hainan AirlinesCheapest$434Average$709FlexibilityNo cancel feeOn-time61%
Air IndiaCheapest$472Average$816FlexibilityNo cancel feeOn-timeN/A
China EasternCheapest$490Average$658FlexibilityNo cancel feeOn-time62%
Shenzhen AirlinesCheapest$494Average$581FlexibilityNo cancel feeOn-time63%
Norse Atlantic UKCheapest$533Average$732FlexibilityNo cancel feeOn-timeN/A
China SouthernCheapest$540Average$680FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$608Average$978FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$641Average$925FlexibilityNo cancel feeOn-time78%
Gulf AirCheapest$645Average$823FlexibilityNo cancel feeOn-time67%

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