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 £276. However, be on the lookout for offers from Air India and Air China, 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 - Singapore Changi, London Heathrow - Bangkok Suvarnabhumi is the most popular route from London Heathrow Airport to Southeast Asia.

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 £2,563, our data indicates the cheapest price to be £357. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £382.

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

The most popular airlines flying from London Heathrow Airport to Southeast Asia are Sichuan Airlines, Air France and Air India. Something to consider prior to booking your flight.

How far in advance should I book a flight from London Heathrow Airport to Southeast Asia?

Travelers have found it’s best to book a flight 57 days in advance to save up to 48% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London Heathrow Airport to Southeast Asia 1-2 weeks in advance for as low as £584, or £695 for flights within the next 24 hours.

What is the cheapest month to fly from London Heathrow Airport to Southeast Asia?

Our data shows that May tends to be the cheapest month to fly to Southeast Asia from London Heathrow Airport. Users have commonly found prices around £644 for the month, but tickets can be as low as £284. Due to multiple factors, prepare for potentially higher prices in December.

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.

£276+ Flights from London Heathrow Airport to Southeast Asia

Cheap flight deals from Heathrow to Southeast Asia

Round-trip from	£393
One-way from	£276
Popular in	December
Cheapest in	May
Average price	£422

SAUDIA
14/5-30/9
2 total stops
48h 50m total
London to Southeast Asia

Search Deals

Hainan Airlines
12/5
1 total stop
30h 00m total
London to Southeast Asia

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (£42 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in May 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 1 May 2025.

Wed 14/517:45LHR - CGK

1 stop23h 00mSAUDIA

Tue 30/900:40CGK - LHR

1 stop25h 50mSAUDIA

Deal found 30/4£393

Wed 24/922:00LHR - BKK

1 stop20h 20mHainan Airlines

Sun 12/1019:20BKK - LHR

2 stops30h 10mHainan Airlines

Deal found 30/4£411

Mon 5/521:20LHR - BKK

1 stop18h 35mChina Eastern

Tue 20/520:50BKK - LHR

2 stops27h 50mChina Eastern

Deal found 30/4£412

Sun 25/522:05LHR - MNL

1 stop20h 35mShenzhen Airlines

Thu 5/602:55MNL - LHR

1 stop24h 05mShenzhen Airlines

Deal found 1/5£414

Tue 3/621:20LHR - MNL

1 stop21h 00mChina Eastern

Wed 18/602:25MNL - LHR

1 stop23h 15mChina Eastern

Deal found 1/5£417

Mon 2/622:05LHR - BKK

1 stop31h 05mShenzhen Airlines

Sun 15/619:30BKK - LHR

1 stop30h 20mShenzhen Airlines

Deal found 30/4£418

Tue 27/522:00LHR - MNL

1 stop20h 30mAir China

Mon 2/602:55MNL - LHR

1 stop24h 20mAir China

Deal found 30/4£419

Mon 3/1122:00LHR - BKK

1 stop29h 10mChina Southern

Wed 19/1111:25BKK - LHR

1 stop37h 50mChina Southern

Deal found 30/4£421

Sun 9/1122:00LHR - MNL

1 stop34h 35mChina Southern

Fri 21/1108:20MNL - LHR

1 stop17h 55mChina Southern

Deal found 30/4£423

Mon 12/522:40LHR - HAN

1 stop31h 15mAir China

Wed 28/513:25HAN - LHR

1 stop37h 05mAir China

Deal found 30/4£429

Sat 10/514:45LHR - CGK

2 stops21h 30mKLM

Thu 22/519:30CGK - LHR

2 stops24h 20mKLM

Deal found 30/4£432

Fri 30/522:05LHR - SIN

1 stop21h 25mShenzhen Airlines

Fri 13/603:30SIN - LHR

1 stop23h 20mShenzhen Airlines

Deal found 30/4£435

Best flights from Heathrow to Southeast Asia
Discover carefully curated flight deals from Heathrow to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 May 2025.

Wed 14/517:45LHR - CGK

1 stop23h 00mSAUDIA

Tue 30/900:40CGK - LHR

1 stop25h 50mSAUDIA

Deal found 30/4£393

Mon 19/521:20LHR - BKK

1 stop17h 35mChina Eastern

Mon 2/621:55BKK - LHR

2 stops26h 45mChina Eastern

Deal found 1/5£409

Mon 12/522:00LHR - BKK

2 stops30h 00mHainan Airlines

Thu 22/519:20BKK - LHR

2 stops30h 10mHainan Airlines

Deal found 1/5£411

Sun 25/522:05LHR - MNL

1 stop20h 35mShenzhen Airlines

Thu 5/602:55MNL - LHR

1 stop24h 05mShenzhen Airlines

Deal found 1/5£414

Tue 27/522:00LHR - MNL

1 stop20h 30mAir China

Mon 2/602:55MNL - LHR

1 stop24h 20mAir China

Deal found 30/4£419

Tue 28/1022:00LHR - BKK

1 stop29h 10mChina Southern

Mon 1/1213:55BKK - LHR

1 stop35h 20mChina Southern

Deal found 1/5£427

Wed 14/522:00LHR - BKK

2 stops29h 45mMultiple Airlines

Tue 20/501:30BKK - LHR

1 stop24h 00mMultiple Airlines

Deal found 30/4£430

Sun 8/612:30LHR - BKK

1 stop25h 05mAir India

Tue 24/614:45BKK - LHR

1 stop25h 30mAir India

Deal found 30/4£436

Tue 27/522:05LHR - SIN

1 stop31h 15mGulf Air

Mon 2/620:00SIN - LHR

1 stop26h 20mGulf Air

Deal found 30/4£440

Sun 18/521:45LHR - SIN

1 stop28h 55mEtihad Airways

Mon 26/521:10SIN - LHR

1 stop28h 35mEtihad Airways

Deal found 30/4£446

Thu 15/521:20LHR - SIN

Nonstop13h 40mBritish Airways

Wed 16/723:20SIN - LHR

Nonstop14h 10mBritish Airways

Deal found 30/4£475

Sun 18/519:45LHR - MNL

1 stop15h 45mAir France

Thu 5/621:45MNL - LHR

2 stops30h 40mAir France

Deal found 30/4£476

Direct flights from Heathrow to Southeast Asia
Explore direct flight options from Heathrow to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 1 May 2025.

Sat 17/519:35LHR - SIN

Nonstop13h 30mBritish Airways

Sat 24/522:40SIN - LHR

Nonstop13h 45mBritish Airways

Deal found 30/4£474

Wed 4/621:10LHR - KUL

Nonstop13h 10mBritish Airways

Tue 10/622:50KUL - LHR

Nonstop13h 35mBritish Airways

Deal found 30/4£512

Mon 8/920:35LHR - SIN

Nonstop13h 10mSingapore Airlines

Tue 7/1009:00SIN - LHR

Nonstop13h 45mSingapore Airlines

Deal found 30/4£570

Mon 1/921:35LHR - KUL

Nonstop13h 15mMalaysia Airlines

Tue 30/909:50KUL - LHR

Nonstop13h 45mMalaysia Airlines

Deal found 30/4£581

Tue 28/1021:35LHR - BKK

Nonstop11h 25mThai Airways

Wed 12/1113:20BKK - LHR

Nonstop13h 15mThai Airways

Deal found 1/5£628

Tue 20/519:50LHR - SGN

Nonstop12h 30mVietnam Airlines

Tue 3/610:30SGN - LHR

Nonstop13h 20mVietnam Airlines

Deal found 30/4£639

Mon 12/521:35LHR - BKK

Nonstop11h 55mEVA Air

Sat 24/512:20BKK - LHR

Nonstop13h 00mEVA Air

Deal found 30/4£641

Mon 12/518:55LHR - HAN

Nonstop11h 45mVietnam Airlines

Mon 26/510:20HAN - LHR

Nonstop12h 45mVietnam Airlines

Deal found 30/4£643

Sun 22/620:50LHR - SIN

Nonstop13h 35mQantas Airways

Sun 6/723:25SIN - LHR

Nonstop14h 10mQantas Airways

Deal found 30/4£679

Last-minute flights from Heathrow to Southeast Asia
Discover last-minute flight deals from Heathrow to Southeast Asia. Data last updated 1 May 2025 and is based on user searches.

Mon 5/521:20LHR - BKK

1 stop18h 35mChina Eastern

Tue 20/520:50BKK - LHR

2 stops27h 50mChina Eastern

Deal found 30/4£412

Tue 6/522:00LHR - MNL

1 stop20h 30mAir China

Mon 12/502:55MNL - LHR

1 stop24h 20mAir China

Deal found 1/5£427

Tue 6/517:10LHR - KUL

2 stops20h 15mKLM

Sun 25/523:55KUL - LHR

1 stop17h 50mKLM

Deal found 29/4£448

Wed 7/521:20LHR - BKK

1 stop17h 35mChina Eastern

Thu 15/520:50BKK - LHR

2 stops27h 50mChina Eastern

Deal found 1/5£409

Wed 7/522:05LHR - SIN

1 stop21h 25mShenzhen Airlines

Thu 15/518:10SIN - LHR

1 stop32h 50mShenzhen Airlines

Deal found 30/4£436

Wed 7/522:40LHR - HAN

1 stop31h 15mAir China

Thu 29/513:25HAN - LHR

1 stop37h 05mAir China

Deal found 30/4£438

Wed 7/519:15LHR - MNL

2 stops32h 20mChina Southern

Sun 25/511:55MNL - LHR

1 stop38h 05mChina Southern

Deal found 30/4£443

Thu 8/522:40LHR - BKK

2 stops22h 30mAir China

Mon 26/504:10BKK - LHR

2 stops22h 20mAir China

Deal found 30/4£441

Fri 9/522:00LHR - BKK

2 stops30h 00mHainan Airlines

Sun 1/619:20BKK - LHR

2 stops30h 10mHainan Airlines

Deal found 1/5£411

Fri 9/522:00LHR - BKK

2 stops30h 00mHainan Airlines

Thu 19/619:20BKK - LHR

2 stops30h 10mHainan Airlines

Deal found 30/4£412

Sat 10/514:45LHR - CGK

2 stops21h 30mKLM

Thu 22/519:30CGK - LHR

2 stops24h 20mKLM

Deal found 30/4£432

Sat 10/521:05LHR - BKK

1 stop16h 30mAir India

Fri 6/608:40BKK - LHR

1 stop16h 20mAir India

Deal found 1/5£440

One-way flights from Heathrow to Southeast Asia
Search for one-way flight options from Heathrow to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 1 May 2025.

Mon 12/522:00LHR - BKK

1 stop30h 00mHainan Airlines

Deal found 30/4£276

Thu 15/515:05LHR - BKK

3 stops35h 00mMultiple Airlines

Deal found 30/4£277

Tue 19/821:45LHR - SIN

1 stop26h 45mAir India

Deal found 30/4£280

Wed 14/522:00LHR - SIN

1 stop22h 45mHainan Airlines

Deal found 30/4£281

Tue 6/522:40LHR - BKK

2 stops22h 30mAir China

Deal found 1/5£281

Tue 27/509:10LHR - SIN

2 stops34h 00mMultiple Airlines

Deal found 30/4£287

Sat 10/516:35LHR - DPS

2 stops34h 15mMultiple Airlines

Deal found 30/4£288

Wed 28/522:00LHR - KUL

1 stop38h 55mHainan Airlines

Deal found 30/4£293

Thu 8/522:15LHR - KUL

2 stops27h 20mMultiple Airlines

Deal found 1/5£294

Mon 26/522:10LHR - KUL

1 stop31h 15mChina Southern

Deal found 1/5£296

Tue 6/521:20LHR - BKK

1 stop22h 35mChina Eastern

Deal found 1/5£296

Sat 10/516:35LHR - MNL

2 stops43h 00mMultiple Airlines

Deal found 30/4£299

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonJakarta

LHR - CGK

LHRCGK

London Heathrow

Wed 14/5

17:45-22:45

1 stop23h 00m

Jakarta Soekarno-Hatta Intl

Tue 30/9

00:40-20:30

1 stop25h 50m

£393

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 19/5

21:20-20:55

1 stop17h 35m

Bangkok Suvarnabhumi

Mon 2/6

21:55-18:40

2 stops26h 45m

£409

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 12/5

22:00-10:00

2 stops30h 00m

Bangkok Suvarnabhumi

Thu 22/5

19:20-19:30

2 stops30h 10m

£411

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Sun 25/5

22:05-01:40

1 stop20h 35m

Manila Ninoy Aquino Intl

Thu 5/6

02:55-20:00

1 stop24h 05m

£414

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 3/6

21:20-01:20

1 stop21h 00m

Manila Ninoy Aquino Intl

Wed 18/6

02:25-18:40

1 stop23h 15m

£417

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 27/5

22:00-01:30

1 stop20h 30m

Manila Ninoy Aquino Intl

Mon 2/6

02:55-20:15

1 stop24h 20m

£419

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 26/10

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

Thu 20/11

03:05-19:10

1 stop23h 05m

£420

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 27/5

22:10-11:40

1 stop31h 30m

Bangkok Suvarnabhumi

Wed 11/6

12:40-19:00

1 stop36h 20m

£421

LondonHanoi

LHR - HAN

LHRHAN

London Heathrow

Mon 12/5

22:40-11:55

1 stop31h 15m

Hanoi Noibai

Wed 28/5

13:25-20:30

1 stop37h 05m

£429

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 14/5

22:00-09:45

2 stops29h 45m

Bangkok Suvarnabhumi

Tue 20/5

01:30-19:30

1 stop24h 00m

£430

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 60 results

...

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 £717). 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?

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

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

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

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 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

8.3

Very Good

732 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

China Airlines

8.3

Very Good

732 reviews

China Airlines

8.3

Very Good

732 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

Hainan Airlines

8.1

Very Good

38 reviews

China Airlines

8.3

Very Good

732 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

Singapore Airlines

8.1

Very Good

1,292 reviews

China Airlines

8.3

Very Good

732 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

Emirates

8.0

Very Good

3,216 reviews

China Airlines

8.3

Very Good

732 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

Related info for your journey

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 £276. However, be on the lookout for offers from Air India and Air China, 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 - Singapore Changi, 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 Thai Airways (69%), Air Canada (68%) 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 £2,563, our data indicates the cheapest price to be £357. The most popular route (London Heathrow - Bangkok Suvarnabhumi), is priced around £382.
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 £717). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Southeast Asia

Heathrow to Suvarnabhumi flights

Gatwick to Suvarnabhumi flights

Heathrow to Haneda flights

London City to Suvarnabhumi flights

Stansted to Suvarnabhumi flights

Heathrow to Narita flights

Heathrow to Kuala Lumpur Intl flights

Gatwick to Haneda flights

Gatwick to Narita flights

Heathrow to New Delhi flights

Heathrow to Hong Kong flights

London City to Narita flights

Heathrow to Colombo flights

Heathrow to Incheon Intl flights

Stansted to Narita flights

Heathrow to Mumbai flights

London City to Haneda flights

Heathrow to Singapore flights

Heathrow to Manila flights

Heathrow to Taiwan Taoyuan Intl flights

Gatwick to Singapore flights

Luton to Suvarnabhumi flights

Heathrow to Denpasar flights

Gatwick to Kuala Lumpur Intl flights

Gatwick to Manila flights

Heathrow to Hongqiao Intl flights

Heathrow to Islamabad flights

London City to Kuala Lumpur Intl flights

Stansted to Kuala Lumpur Intl flights

Stansted to Manila flights

Heathrow to Gimpo Intl flights

Gatwick to Denpasar flights

Stansted to Denpasar flights

Heathrow to Hyderabad flights

London City to Denpasar flights

London City to Manila flights

Heathrow to Lahore flights

Heathrow to Bangalore flights

Gatwick to Colombo flights

Heathrow to Ho Chi Minh City flights

Stansted to Colombo flights

Heathrow to Dhaka flights

Heathrow to Kathmandu flights

Heathrow to Chennai flights

Gatwick to Hong Kong flights

Gatwick to Islamabad flights

Heathrow to Phuket City flights

Gatwick to Mumbai flights

Gatwick to Hongqiao Intl flights

Gatwick to New Delhi flights

Complete your trip

Incheon Intl Airport car hire

Los Angeles Airport car hire

Kastrup Copenhagen Airport car hire

Madrid Barajas Airport car hire

Bangkok Suvarnabhumi Airport car hire

Barcelona-El Prat Airport car hire

Lisbon Humberto Delgado Airport car hire

San Francisco Airport car hire

Miami Airport car hire

Amsterdam Schiphol Airport car hire

Manila Ninoy Aquino Intl Airport car hire

Boston Logan Intl Airport car hire

Direct flights to

Heathrow to Southeast Asia flights

Heathrow to Don Mueang Intl flights

Heathrow to Hanoi flights

Heathrow to Soekarno-Hatta Intl flights

Heathrow to Cebu City flights

Heathrow to Angeles City flights

Heathrow to Phnom Penh flights

Heathrow to Subang flights

Heathrow to Da Nang flights

Heathrow to Ko Samui flights

Heathrow to Chiang Mai flights

Heathrow to Penang flights

Heathrow to Krabi flights

Heathrow to Davao City flights

Heathrow to Praya flights

Heathrow to Langkawi flights

Heathrow to Kota Kinabalu flights

Heathrow to Medan flights

Heathrow to Yangon flights

Heathrow to Rayong flights

Heathrow to Laguindingan International flights

Heathrow to Puerto Princesa flights

Heathrow to Surabaya flights

Heathrow to Kuching flights

Heathrow to Miri flights

Heathrow to Nha Trang flights

Heathrow to Boracay flights

Heathrow to Alor Setar flights

Heathrow to Bandar Seri Begawan flights

Heathrow to Vientiane flights

Heathrow to Phu Quoc flights

Heathrow to Iloilo City flights

Heathrow to Panglao flights

Heathrow to Udon Thani flights

Heathrow to Hat Yai flights

Heathrow to Hue flights

Heathrow to Haiphong flights

Heathrow to Labuan Bajo flights

Heathrow to Manado flights

Heathrow to Dili flights

Heathrow to Kalibo flights

Heathrow to Senai flights

Top 10 airlines flying from Heathrow to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Norse Atlantic UK	Cheapest£313	Average£568	FlexibilityNo cancel fee	On-timeN/A	Search Norse Atlantic UK flights
Air France	Cheapest£394	Average£637	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Hainan Airlines	Cheapest£405	Average£476	FlexibilityNo cancel fee	On-time61%	Search Hainan Airlines flights
KLM	Cheapest£418	Average£835	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Royal Brunei Airlines	Cheapest£429	Average£597	FlexibilityNo cancel fee	On-time84%	Search Royal Brunei Airlines flights
Finnair	Cheapest£483	Average£843	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
SWISS	Cheapest£485	Average£701	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
Lufthansa	Cheapest£489	Average£742	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Royal Jordanian	Cheapest£520	Average£701	FlexibilityNo cancel fee	On-time61%	Search Royal Jordanian flights
Austrian Airlines	Cheapest£523	Average£906	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to Southeast Asia from £276

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.

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 1 May 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Southeast Asia

Cheapest flights from Heathrow to Southeast AsiaExplore 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 1 May 2025.

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 1 May 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Southeast Asia that are best for you.

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.

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?

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 1 May 2025.

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 1 May 2025.

Rainfall in Southeast Asia by month

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

Temperature in Southeast Asia by month

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

Reviews of airlines servicing Southeast Asia

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?

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

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

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

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

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

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

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

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.

Alternative routes for Heathrow to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Heathrow to Southeast Asia

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?

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 1 May 2025.