€332 Find cheap flights from London Heathrow Airport to Southeast Asia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Southeast Asia departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Search hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Southeast Asia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Southeast Asia, as well as popular online travel agencies
In the last 7 days, travellers have searched 46,646,933 times on KAYAK, and here's why:

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Good to know

Low season

September

High season

December
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (28% more expensive on average)

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Southeast Asia from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Southeast Asia with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Southeast Asia from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Flights from Heathrow to Southeast Asia: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Heathrow to Southeast Asia 
Verified travelerFlew with Qantas AirwaysLHR-SINSept 2024
Unless you’re flying Business or First Class, definitely take your own travel pillow - they make a difference.
NorhayatiFlew with Malaysia AirlinesLHR-KULMar 2024
Take MH (Malaysia Airline) coz they are good
OmarFlew with Qantas AirwaysLHR-SINMay 2024
Qantas lounge was crowded. try other One World lounges
Verified travelerFlew with Singapore AirlinesLHR-SINFeb 2024
Flew with Singapore Airlines great experience and efficient transfer to next flight at Changi . Premium economy was worth the extra giving easier boarding and comfortable seats with more room.

Top airlines flying from Heathrow to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from London to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Vietnam AirlinesOverall score based on 233 reviews
6.5Entertainment
7.6Boarding
7.5Comfort
8.1Crew
6.8Food
Airline reviews

Overall very nice airline. The seats were cloth unlike leather seats I am accustom to on planes. The food was adequate. I had to use a paper boarding pass as they do not like electronic boarding passes. I scanned my electronic pass, but the gate agent requested the paper pass. Luckily I had a paper pass, although my electronic pass worked and when the paper pass was scanned it stated I was already on board.

10.0 ExcellentDarryl, Nov 2024HAN - HND
Read more Vietnam Airlines reviews

Overall very nice airline. The seats were cloth unlike leather seats I am accustom to on planes. The food was adequate. I had to use a paper boarding pass as they do not like electronic boarding passes. I scanned my electronic pass, but the gate agent requested the paper pass. Luckily I had a paper pass, although my electronic pass worked and when the paper pass was scanned it stated I was already on board.

Overall very nice airline. The seats were cloth unlike leather seats I am accustom to on planes. The food was adequate.

I am a bit upset with the check in counter, I signed up a wheelchair for my mom so they wouldn’t grant us her boarding pass. We got to the airport a couple of hours earlier and they had us wait and no one ever gave us her boarding pass or the wheelchair, I had to go back and complain when it was already time for our flight to board. Since we got their earlier, I could have easily pushed my mom myself and we could have relaxed and went to the lounge while waiting… when I finally got someone to help us he couldn’t explain how and why they dismissed us in the first place.

Was on holiday with my partner and we booked with Vietnam airlines as it not meant to be a budget airline. They separated us and made us sit at either end of the plane. Not the way I planned to spend my time on my holiday separate from my loved one. How can they separate people on the same booking. They know we are together and spending quality time together.

I had sometimes my trips with Vietnam Airlines and I like it 😊

The check-in process was great, and I cannot remember the name of the supervisor, but he was good and told us about the transit process very correctly and efficiently and kindly. We were given down access and the overall process was very efficient.

The plane had a technical problem it would delayed 10 hours but they just gave limited information and put all passengers into the Miracle lounge. Ther were not enough chairs and so on.

Ensure there is a choice of food for all customers and also enough food

An excellent airline; polite and courteous cabin crew, excellent meal and drink service. Highly recommended.

We boarded the plane at 1:20 pm It was hot. There was no air-conditioning It was stifling They kept us on the plane sitting there for 1 hour and 10 minutes

Food and service are good. Bathroom was lack of lotions and cleaning. That should be improved.

Food & service very good next I will pick up again

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced. Also, a cabin bag allows only 5kg!

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced.

Everything was not satisfactory - the flight was delayed, staffs were ok but they didn't speak English well. I am from east Asia (not Chinese) and they didn't care enough to remember that I wasn't Chinese but persistently spoke chinese to me. The flight announcement in english wasn't clear to understand.

I wish I had been able to choose a vegetarian meal. Crew friendly and helpful. Seat was ok. All quite efficient and pleasant. Would recommend for inner China travel for sure.

The flight is not bad, but the Business Lounge is not big enough for the quantity of people they accept and there is a limited options for food and beverages.

It was simply bad and on top of that my luggage hasn't been delivered until now. They can't even localize it which is just unacceptable when they are supposed to scan the bar code they put when we check in

We bought premium Economy, thinking it would be more comfortable, but the seat is so narrow ,that my legs and feet are swollen , I can't wear shoes !

The flight was delayed for almost 5 hours, but I understand that it was not up to the company, however how they could handle the situation better, they never apologized for that delay, moreover despite passengers being there for 7 hours only thing they did was to give a bowl of instant noodles, afterwards on the plane tiny snacks, people were there starting from lunch time and we’ve arrived to destination at almost midnight

Book cheap flights from London to Southeast Asia

Recent return flight deals

 
These are the cheapest return flights from London to Southeast Asia found on KAYAK in the last 72 hours.
29/1Wed
1 stopShenzhen Airlines
21h 55mLHR-BKK
28/3Fri
1 stopShenzhen Airlines
30h 40mBKK-LHR
€501
1/12Sun
1 stopShenzhen Airlines
20h 30mLHR-MNL
12/12Thu
1 stopShenzhen Airlines
24h 15mMNL-LHR
€507
26/2Wed
1 stopShenzhen Airlines
20h 30mLHR-MNL
13/3Thu
1 stopShenzhen Airlines
24h 15mMNL-LHR
€511
14/1Tue
1 stopAir China
19h 50mLHR-MNL
29/1Wed
1 stopAir China
24h 45mMNL-LHR
€521
10/1Fri
2 stopsHainan Airlines
30h 05mLHR-BKK
19/1Sun
2 stopsHainan Airlines
29h 45mBKK-LHR
€550
18/2Tue
2 stopsKLM
34h 10mLHR-MNL
19/3Wed
2 stopsKLM
30h 25mMNL-LHR
€624
6/12Fri
1 stopAir China
39h 50mLHR-HKT
12/12Thu
1 stopAir China
26h 15mHKT-LHR
€626
9/5Fri
1 stopKLM
18h 50mLHR-BKK
22/5Thu
1 stopKLM
14h 50mBKK-LHR
€646
1/5Thu
directVietnam Airlines
12h 30mLHR-SGN
20/5Tue
directVietnam Airlines
13h 20mSGN-LHR
€841
10/3Mon
1 stopVietnam Airlines
23h 50mLHR-KUL
23/3Sun
2 stopsVietnam Airlines
43h 25mKUL-LHR
€875

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Southeast Asia found on KAYAK in the last 72 hours.
5/3Wed
1 stopShenzhen Airlines
21h 10mLHR-SGN
€332
19/3Wed
1 stopShenzhen Airlines
20h 30mLHR-MNL
€332
26/1Sun
1 stopShenzhen Airlines
21h 55mLHR-BKK
€332
4/2Tue
2 stops
33h 10mLHR-HKT
€385
4/2Tue
1 stopOman Air
27h 40mLHR-BKK
€420
4/2Tue
3 stops
26h 10mLHR-HKT
€439
4/2Tue
1 stopSAUDIA
20h 40mLHR-HKT
€495
4/2Tue
1 stopSAUDIA
23h 15mLHR-HKT
€528
1/12Sun
2 stopsVietnam Airlines
24h 30mLHR-BKK
€604
27/11Wed
2 stopsVietnam Airlines
24h 30mLHR-BKK
€605

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Last minute flights from Heathrow to Southeast Asia

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to Southeast Asia that are departing in the next 10 days.
23/11Sat
multi-stopAir China
31h 55mLHR-BKK
9/12Mon
multi-stopAir China
36h 50mBKK-LHR
€499
25/11Mon
multi-stopAir China
23h 30mLHR-BKK
10/12Tue
multi-stopAir China
27h 25mBKK-LHR
€517
23/11Sat
multi-stop
31h 55mLHR-BKK
8/12Sun
multi-stop
23h 05mBKK-LHR
€525
23/11Sat
multi-stop
31h 55mLHR-BKK
9/12Mon
multi-stop
26h 35mBKK-LHR
€575
25/11Mon
multi-stopChina Eastern
18h 25mLHR-BKK
9/12Mon
multi-stopChina Eastern
22h 35mBKK-LHR
€581
23/11Sat
multi-stopChina Eastern
29h 30mLHR-BKK
9/12Mon
multi-stopChina Eastern
19h 25mBKK-LHR
€597
25/11Mon
multi-stopShenzhen Airlines
22h 20mLHR-KUL
8/12Sun
multi-stopShenzhen Airlines
22h 40mKUL-LHR
€614
25/11Mon
multi-stopShenzhen Airlines
21h 55mLHR-BKK
5/12Thu
multi-stopShenzhen Airlines
38h 00mBKK-LHR
€617
27/11Wed
multi-stopVietnam Airlines
24h 30mLHR-BKK
11/12Wed
multi-stopVietnam Airlines
26h 55mBKK-LHR
€892
25/11Mon
multi-stopVietnam Airlines
20h 45mLHR-BKK
11/12Wed
multi-stopVietnam Airlines
18h 40mBKK-LHR
€897

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Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

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