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Southeast Asia

$390+ Cheap flights from Heathrow (LHR) 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 6/20. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Heathrow to Southeast Asia

Keep the following information in mind while searching for Heathrow to Southeast Asia flight deals. Data was last updated June 12, 2025.

Round-trip from

$564
(Booking.com)

One-way from

$390
(FlightHub)

Popular in

December

Cheapest in

November

Average price

$837
From London Heathrow to Southeast Asia
Search Deals
One-way flight from London Heathrow to Southeast Asia
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Heathrow to Southeast Asia

Cheapest flights from Heathrow to Southeast Asia
Explore the most affordable flight options available from Heathrow to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Booking.com deal was found by Cheapflights users on 6/10. 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 9/810:00 pmLHR - BKK
2 stops30h 00mHainan Airlines
Thu 10/27:20 pmBKK - LHR
2 stops30h 10mHainan Airlines
Deal found 6/10$564
This Mytrip deal was found by Cheapflights users on 6/11. 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 11/219:10 pmLHR - BKK
1 stop21h 40mShenzhen Airlines
Sat 11/293:05 amBKK - LHR
1 stop23h 05mShenzhen Airlines
Deal found 6/11$576
This Gotogate deal was found by Cheapflights users on 6/11. 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 9/169:20 pmLHR - BKK
1 stop21h 20mChina Eastern
Mon 10/132:10 amBKK - LHR
1 stop22h 30mChina Eastern
Deal found 6/11$616
This Gotogate deal was found by Cheapflights users on 6/11. 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 11/35:40 pmLHR - SIN
1 stop29h 10mAir China
Sat 11/811:55 pmSIN - LHR
1 stop25h 55mAir China
Deal found 6/11$619
This Trip.com deal was found by Cheapflights users on 6/11. 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.
Sun 6/159:20 pmLHR - HAN
1 stop22h 00mChina Eastern
Thu 6/193:00 pmHAN - LHR
1 stop33h 40mChina Eastern
Deal found 6/11$620
This Booking.com deal was found by Cheapflights users on 6/10. 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 6/1610:40 pmLHR - BKK
1 stop19h 30mAir China
Wed 7/21:30 amBKK - LHR
1 stop25h 00mAir China
Deal found 6/10$621
This China Southern deal was found by Cheapflights users on 6/12. 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 Southern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1810:00 pmLHR - BKK
1 stop29h 10mChina Southern
Mon 12/12:10 amBKK - LHR
1 stop23h 05mChina Southern
Deal found 6/12$627
This Shenzhen Airlines deal was found by Cheapflights users on 6/10. 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 Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:10 pmLHR - HAN
1 stop29h 40mShenzhen Airlines
Sat 11/156:40 pmHAN - LHR
1 stop31h 30mShenzhen Airlines
Deal found 6/10$628
This FlightHub deal was found by Cheapflights users on 6/10. 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 10/315:40 pmLHR - HAN
1 stop35h 15mAir China
Fri 11/71:25 pmHAN - LHR
1 stop35h 25mAir China
Deal found 6/10$640
This Gotogate deal was found by Cheapflights users on 6/10. 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 6/1710:05 pmLHR - SIN
1 stop31h 15mGulf Air
Tue 6/248:00 pmSIN - LHR
1 stop26h 20mGulf Air
Deal found 6/10$652
This SWISS deal was found by Cheapflights users on 6/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:00 amLHR - BKK
1 stop21h 45mSWISS
Wed 9/2412:35 pmBKK - LHR
1 stop36h 45mSWISS
Deal found 6/11$656
This Shenzhen Airlines deal was found by Cheapflights users on 6/11. 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 Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:05 pmLHR - MNL
1 stop20h 35mShenzhen Airlines
Fri 10/242:55 amMNL - LHR
1 stop23h 55mShenzhen Airlines
Deal found 6/11$660

Cheapflights Fare Finder

Customize your flight search to find flights from Heathrow 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 June 12, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Southeast Asia that are best for you.

Fly from

Heathrow

Fly to

Southeast Asia

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 9/8

10:00 pm-10:00 am

2 stops30h 00m

Bangkok Suvarnabhumi

Thu 10/2

7:20 pm-7:30 pm

2 stops30h 10m

$564

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 11/21

9:10 pm-1:50 am

1 stop21h 40m

Bangkok Suvarnabhumi

Sat 11/29

3:05 am-7:10 pm

1 stop23h 05m

$576

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 9/16

9:20 pm-12:40 am

1 stop21h 20m

Bangkok Suvarnabhumi

Mon 10/13

2:10 am-6:40 pm

1 stop22h 30m

$616

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 11/3

5:40 pm-6:50 am

1 stop29h 10m

Singapore Changi

Sat 11/8

11:55 pm-5:50 pm

1 stop25h 55m

$619

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 11/18

10:00 pm-10:10 am

1 stop29h 10m

Bangkok Suvarnabhumi

Tue 12/2

11:25 am-6:15 pm

1 stop37h 50m

$627

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Fri 10/31

9:10 pm-9:50 am

1 stop29h 40m

Hanoi Noibai

Sat 11/15

6:40 pm-7:10 pm

1 stop31h 30m

$628

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 11/3

8:25 pm-6:05 pm

1 stop38h 40m

Bangkok Suvarnabhumi

Wed 12/10

1:50 pm-7:40 pm

1 stop36h 50m

$628

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 8/24

6:00 am-9:45 am

1 stop21h 45m

Bangkok Suvarnabhumi

Wed 9/24

12:35 pm-7:20 pm

1 stop36h 45m

$656

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Fri 11/21

3:45 pm-4:15 pm

1 stop16h 30m

Singapore Changi

Sun 11/23

1:40 am-4:05 pm

1 stop22h 25m

$663

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Mon 6/30

10:05 pm-12:20 pm

1 stop31h 15m

Singapore Changi

Fri 7/4

8:00 pm-6:55 am

1 stop17h 55m

$669

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 60 results
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Best time to book a flight from Heathrow to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Heathrow 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 Heathrow Airport to Southeast Asia

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

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of $953). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of $1,574). 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 LHR to YJX?

Find hourly flight availability from Heathrow 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 June 12, 2025.

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

Weekly flight availability from London Heathrow Airport to Southeast Asia

Explore weekly flight availability from Heathrow 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 June 12, 2025.

The most flights from LHR 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).

Rainfall in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Southeast Asia ranges from 0.4 - 15.7 inches per month. July is typically the wettest month, when rainfall can reach 15.7 in. February is typically the driest time to visit Southeast Asia when rainfall is around 0.4 in.

Temperature in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average temperature totals by month.

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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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 June 12, 2025.
Read reviews from past customers who have flown EVA Air, China Airlines and Hainan Airlines from London to Southeast Asia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Hainan Airlines
8.1
Very good
39 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Garuda Indonesia
8.1
Very good
76 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    The cheapest airline one-way is Hainan Airlines, with whom users have recently found tickets for as low as $390. However, be on the lookout for offers from China Southern and Oman Air, as they are both options that can get you from London Heathrow Airport to Southeast Asia for a low price.

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

    The most popular route from London Heathrow Airport to Southeast Asia is London Heathrow - Bangkok Suvarnabhumi. You may also consider London Heathrow - Langkawi or London Heathrow - Manila Ninoy Aquino Intl.

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

    Before booking your flight to Southeast Asia from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Thai Airways (62%), EVA Air (59%), Air Canada( 57%).

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

    On average you can expect to pay $2,425 for a flight from London Heathrow Airport to Southeast Asia. The cheapest flight overall is $486 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at $572.

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

    Yes. In addition to deals on Heathrow to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Southeast Asia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Southeast Asia.

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Southeast Asia?

    Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of $953). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of $1,574). 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 Heathrow to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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London City to New Delhi flights
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Gatwick to Hong Kong flights
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Top 10 airlines flying from Heathrow to Southeast Asia

Discover the top 10 airlines that operate flights from Heathrow 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest$407Average$818FlexibilityNo cancel feeOn-time86%
Shenzhen AirlinesCheapest$457Average$549FlexibilityNo cancel feeOn-time63%
Gulf AirCheapest$514Average$783FlexibilityNo cancel feeOn-time67%
China EasternCheapest$533Average$692FlexibilityNo cancel feeOn-time62%
Hainan AirlinesCheapest$560Average$636FlexibilityNo cancel feeOn-time61%
Air IndiaCheapest$590Average$908FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$620Average$953FlexibilityNo cancel feeOn-time70%
Oman AirCheapest$683Average$821FlexibilityNo cancel feeOn-time76%
Kuwait AirwaysCheapest$689Average$872FlexibilityNo cancel feeOn-time64%
FinnairCheapest$726Average$1,087FlexibilityNo cancel feeOn-time76%

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