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Cheap flights from London Heathrow Airport to Southeast Asia from £291

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 18/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
7 Apr — 14 Apr1
1 adult

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 2 April 2025.

Round-trip from

£417

One-way from

£291

Popular in

December

Cheapest in

May

Average price

£700
SAUDIA
  • SAUDIA
  • 28/6-19/7
  • 2 total stops
  • 35h 55m total
  • London to Southeast Asia
Search Deals
18/5
  • 18/5
  • 2 total stops
  • 27h 50m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£45 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 2 April 2025.

Fri 4/714:40LHR - CGK
1 stop26h 05mSAUDIA
Fri 25/707:50CGK - LHR
2 stops29h 40mSAUDIA
Deal found 2/4£416
Thu 1/520:55LHR - MNL
2 stops38h 35mMultiple Airlines
Thu 15/513:05MNL - LHR
2 stops39h 20mMultiple Airlines
Deal found 31/3£419
Thu 1/521:20LHR - MNL
1 stop21h 00mChina Eastern
Fri 16/503:55MNL - LHR
1 stop21h 45mChina Eastern
Deal found 1/4£419
Tue 22/422:40LHR - MNL
1 stop18h 40mAir China
Mon 12/502:55MNL - LHR
1 stop24h 20mAir China
Deal found 1/4£422
Sun 11/522:10LHR - MNL
1 stop35h 35mChina Southern
Sun 25/511:55MNL - LHR
1 stop38h 05mChina Southern
Deal found 2/4£425
Thu 12/614:45LHR - MNL
2 stops23h 15mKLM
Mon 7/720:55MNL - LHR
2 stops20h 50mKLM
Deal found 1/4£427
Sun 4/517:30LHR - CGK
1 stop23h 15mMultiple Airlines
Sun 11/519:50CGK - LHR
1 stop26h 45mMultiple Airlines
Deal found 1/4£438
Thu 5/620:25LHR - BKK
2 stops24h 45mAir China
Thu 19/604:10BKK - LHR
2 stops22h 20mAir China
Deal found 1/4£444
Fri 18/422:10LHR - BKK
1 stop31h 30mChina Southern
Sat 17/508:20BKK - LHR
1 stop16h 40mChina Southern
Deal found 2/4£445
Sun 2/1121:10LHR - BKK
1 stop31h 00mShenzhen Airlines
Thu 20/1103:05BKK - LHR
1 stop23h 05mShenzhen Airlines
Deal found 2/4£447
Tue 27/521:20LHR - BKK
1 stop21h 20mChina Eastern
Wed 4/613:35BKK - LHR
1 stop35h 05mChina Eastern
Deal found 1/4£448
Thu 19/622:10LHR - BKK
1 stop20h 00mSAUDIA
Sat 12/715:25BKK - LHR
1 stop22h 05mSAUDIA
Deal found 2/4£451

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 2 April 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

LondonJakarta

LHR - CGK

LHRCGK

London Heathrow

Fri 4/7

14:40-22:45

1 stop26h 05m

Jakarta Soekarno-Hatta Intl

Fri 25/7

07:50-07:30

2 stops29h 40m

£416

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Thu 1/5

20:55-18:30

2 stops38h 35m

Manila Ninoy Aquino Intl

Thu 15/5

13:05-21:25

2 stops39h 20m

£419

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Thu 1/5

21:20-01:20

1 stop21h 00m

Manila Ninoy Aquino Intl

Fri 16/5

03:55-18:40

1 stop21h 45m

£419

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 22/4

22:40-00:20

1 stop18h 40m

Manila Ninoy Aquino Intl

Tue 13/5

06:25-17:45

1 stop18h 20m

£422

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Sun 11/5

22:10-16:45

1 stop35h 35m

Manila Ninoy Aquino Intl

Sun 25/5

11:55-19:00

1 stop38h 05m

£425

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Thu 12/6

14:45-21:00

2 stops23h 15m

Manila Ninoy Aquino Intl

Mon 7/7

20:55-10:45

2 stops20h 50m

£427

LondonJakarta

LHR - CGK

LHRCGK

London Heathrow

Sun 4/5

17:30-22:45

1 stop23h 15m

Jakarta Soekarno-Hatta Intl

Sun 11/5

19:50-16:35

1 stop26h 45m

£438

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 5/6

20:25-03:10

2 stops24h 45m

Bangkok Suvarnabhumi

Thu 19/6

04:10-20:30

2 stops22h 20m

£444

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 29/5

22:10-01:30

1 stop21h 20m

Bangkok Suvarnabhumi

Thu 12/6

13:45-19:00

1 stop35h 15m

£446

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 31/5

22:05-11:10

1 stop31h 05m

Bangkok Suvarnabhumi

Sat 7/6

12:10-20:00

1 stop37h 50m

£447

Flights are sorted by cheapest return flights first.

Deals found on 1/4

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 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 Heathrow Airport to Southeast Asia

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

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of £730). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,123). 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 2 April 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 2 April 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 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.

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 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).

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 2 April 2025.
Get a feel of what it's like to fly with China Airlines, Hainan Airlines and Singapore Airlines from London to Southeast Asia by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.2
Very Good
724 reviews
Check prices

Boarding

8.3

Comfort

8.0

Crew

8.5

Overall

8.2

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
China Airlines
8.2
Very Good
724 reviews
China Airlines
8.2
Very Good
724 reviews
Check prices

Boarding

8.3

Comfort

8.0

Crew

8.5

Overall

8.2

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Hainan Airlines
8.1
Very Good
36 reviews
China Airlines
8.2
Very Good
724 reviews
Check prices

Boarding

8.3

Comfort

8.0

Crew

8.5

Overall

8.2

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Singapore Airlines
8.1
Very Good
1,288 reviews
China Airlines
8.2
Very Good
724 reviews
Check prices

Boarding

8.3

Comfort

8.0

Crew

8.5

Overall

8.2

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Emirates
8.0
Very Good
3,193 reviews
China Airlines
8.2
Very Good
724 reviews
Check prices

Boarding

8.3

Comfort

8.0

Crew

8.5

Overall

8.2

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

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 China Southern, with whom users have recently found tickets for as low as £292. However, be on the lookout for offers from Air India and SAUDIA, 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?

    While some choose either London Heathrow - Kuala Lumpur Intl or London Heathrow - Manila Ninoy Aquino Intl, London Heathrow - Bangkok Suvarnabhumi is the most popular route from London Heathrow Airport to Southeast Asia.

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

    The top 3 most reliable airlines when flying from London Heathrow Airport to Southeast Asia are Air Canada (71%), Thai Airways (67%) and EVA Air (62%).

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

    Looking for the cheapest flight from London Heathrow Airport to Southeast Asia? While on average our users pay £2,719, our data indicates the cheapest price to be £359. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £347.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Southeast Asia (average of £730). Flying from London Heathrow Airport to Southeast Asia in December is currently the most expensive (average of £1,123). 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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Stansted to Manila flights
Heathrow to Taiwan Taoyuan Intl flights
Gatwick to Kuala Lumpur Intl flights
Heathrow to Hyderabad flights
London City to Manila flights
Gatwick to Denpasar flights
Heathrow to Lahore flights
London City to Kuala Lumpur Intl flights
Heathrow to Hongqiao Intl flights
London City to Denpasar flights
Stansted to Denpasar flights
Gatwick to Hong Kong flights
Heathrow to Bangalore flights
Stansted to Kuala Lumpur Intl flights
London City to Hong Kong flights
Stansted to Hong Kong flights
Heathrow to Gimpo Intl flights
Heathrow to Ho Chi Minh City flights
Heathrow to Chennai flights
Heathrow to Don Mueang Intl flights
Gatwick to Colombo flights
Stansted to Colombo flights
Stansted to Islamabad flights
Heathrow to Dhaka flights
Heathrow to Cochin flights
Stansted to New Delhi flights

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 858,174 searches. Data last updated 2 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest£389Average£725FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air FranceCheapest£408Average£719FlexibilityNo cancel feeOn-time77%
Search Air France flights
Hainan AirlinesCheapest£415Average£478FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
KLMCheapest£433Average£863FlexibilityNo cancel feeOn-time75%
Search KLM flights
Royal Brunei AirlinesCheapest£480Average£614FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
SWISSCheapest£501Average£719FlexibilityNo cancel feeOn-time79%
Search SWISS flights
FinnairCheapest£503Average£872FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£505Average£739FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Norse Atlantic UKCheapest£505Average£588FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Royal JordanianCheapest£537Average£716FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

When you search for this flight from Heathrow 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.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Southeast Asia from Heathrow.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Southeast Asia, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Heathrow to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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