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Find cheap flights from London Heathrow Airport to Southeast Asia from €377

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 2/6. 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.
1 adult
0 bags
Sun 2/6
Sun 9/6

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Good to know

Low season

August

High season

December
Best time to beat the crowds but there is an average 16% increase in price.
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

Top tips for finding cheap flights to Southeast Asia

  • Looking for a cheap flight? 25% of our users found tickets from London Heathrow Airport to the following destinations at these prices or less: Kuala Lumpur €533 one-way - €742 round-trip

Top airlines flying from Heathrow to Southeast Asia

 
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.
7.5
Vietnam AirlinesOverall score based on 297 reviews
7.0Food
8.1Crew
7.7Boarding
6.6Entertainment
7.6Comfort
Airline reviews

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.

2.0 MediocrePeter Kwangjin, Mar 2024BKK - SGN
Read more about Vietnam Airlines reviews

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

No space in between the seats as per them the average height of human is 5’3” and weight as 55, so seats are designed as per the same. Also, the aircraft was dirty and full of insects

when we arrived at Taipei no one help us to get boarding pass. we saw a few people there asked them for help but they just ignored us. There was a guy told us to call Starlux number to get help but we don’t know how to dial the number until there was a lady working there helped us to call Starlux customer then someone came down took us to another counter for boarding pass. Very confused and inconvenient. We might not choose Starlux again in the future.

There was no entertainment and food option limited But the service was first class on an economy flight

They didn't have a vegetarian food in spite of the ore order

Technical problems checking in. Had to wait a long time while they got things ready.

Vietnam airlines is just one step upper to the cheapest one (vietjet, if you wanted delays and cancel or feel like a criminal then vietjet is for you) for sure better customer cares and on time.

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

Flight was delayed for 2 hours for no reason, then we spent almost an hour after boarding because of the weather conditions. If we left on time we could avoid that 😾

Pros: "Friendly crew and helpful staff"
Cons: "Missed connection from PEK to XIY due to delayed arrival and early departure. From XIY to PEK, booked and confirmed 11 departure, changed to 12:30 without notification or explaination. Rushed connections at PEK, pretty much ran from the minute left plan to another terminal, through custom, through all the health check points, security check. Just keep the fights on time and keep the original schedules, not arbitrarily change them."
Pros: "Because of our delay, we flew with Air Thai instead of Air China....much better airline"
Pros: "The crew was accommodating during the flight but spoke very little English and could not help with information on connecting flight."
Cons: "We missed our connecting flight due to a delay and the airline would not let us through because we could have made our second flight...."
Cons: "Even for business class there is no TV screen on each seat. Just one small TV screen on the ceiling for a few rows to share. It would be much better with TV screen on each seat. I was sitting in the first row business class and the air hostess skipped me and didn’t give me a slipper. She gave me a used slipper at the end only without a packet. This is unprofessional to treat a business class passenger"
Cons: "Seats are narrow, leg room limited, and food is minimal."
Pros: "Crew was great and was happy to get gluten free food i could eat"
Cons: "Not lose my bags :("
Pros: "The crew was super helpful and amazing! Comfortable seats and plenty of space for someone my size to sit (5’4”)."
Cons: "The only thing that I think could be better is the entertainment. I had a hard time figuring out how to use the screen on the aircraft but the selection of shows was good."
Cons: "kayak charge me for seat assiment and kosher food and millage number Nom of those was in and i had to travel with out food and fight to get seats and make sure the millage number is in"

Book cheap flights from London to Southeast Asia

Recent return flight deals

9/6Sun
1 stopShenzhen Airlines
22h 10mLHR-BKK
27/6Thu
1 stopShenzhen Airlines
30h 35mBKK-LHR
€526
9/6Sun
1 stopShenzhen Airlines
20h 35mLHR-MNL
22/6Sat
1 stopShenzhen Airlines
24h 05mMNL-LHR
€540
29/5Wed
1 stopShenzhen Airlines
20h 35mLHR-MNL
27/6Thu
1 stopShenzhen Airlines
24h 05mMNL-LHR
€542
8/9Sun
1 stopSWISS
21h 40mLHR-BKK
1/10Tue
1 stopSWISS
36h 40mBKK-LHR
€569
16/5Thu
1 stopAir China
37h 05mLHR-BKK
3/6Mon
1 stopAir China
30h 25mBKK-LHR
€574
19/9Thu
1 stopAustrian Airlines
19h 30mLHR-BKK
2/10Wed
1 stopAustrian Airlines
14h 40mBKK-LHR
€579
8/9Sun
1 stopSWISS
21h 40mLHR-BKK
1/10Tue
2 stopsSWISS
35h 45mBKK-LHR
€596
29/8Thu
1 stopAustrian Airlines
23h 30mLHR-BKK
30/9Mon
1 stopAustrian Airlines
25h 00mBKK-LHR
€596
15/5Wed
1 stopVietnam Airlines
16h 50mLHR-SGN
15/6Sat
directVietnam Airlines
13h 20mSGN-LHR
€858
12/10Sat
directVietnam Airlines
12h 45mLHR-SGN
27/10Sun
directVietnam Airlines
14h 10mSGN-LHR
€904

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Recent one-way flight deals

2/6Sun
1 stopShenzhen Airlines
20h 35mLHR-MNL
€377
19/6Wed
1 stopShenzhen Airlines
24h 55mLHR-KUL
€377
15/5Wed
1 stopAir India
25h 10mLHR-BKK
€411
22/9Sun
1 stopAir India
30h 40mLHR-BKK
€412
12/8Mon
1 stopGulf Air
22h 35mLHR-BKK
€432
3/6Mon
2 stopsGulf Air
23h 35mLHR-BKK
€439
6/9Fri
2 stopsSWISS
56h 25mLHR-BKK
€467
30/5Thu
2 stopsSWISS
20h 40mLHR-BKK
€556
18/5Sat
2 stopsVietnam Airlines
39h 45mLHR-BKK
€603
27/10Sun
2 stopsVietnam Airlines
24h 30mLHR-BKK
€639

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Last minute flights from Heathrow to Southeast Asia

Last minute flight, train and bus deals

6/5Mon
multi-stopShenzhen Airlines
21h 20mLHR-SGN
21/5Tue
multi-stopShenzhen Airlines
23h 40mSGN-LHR
€551
7/5Tue
multi-stopChina Eastern
21h 00mLHR-MNL
22/5Wed
multi-stopChina Eastern
21h 45mMNL-LHR
€620
5/5Sun
multi-stopKLM
21h 00mLHR-BKK
24/5Fri
multi-stopKLM
25h 35mBKK-LHR
€623
6/5Mon
multi-stopOman Air
27h 30mLHR-BKK
20/5Mon
multi-stopOman Air
28h 30mBKK-LHR
€630
6/5Mon
multi-stopKLM
18h 50mLHR-BKK
31/10Thu
multi-stopKLM
27h 30mBKK-LHR
€642
7/5Tue
multi-stopOman Air
27h 30mLHR-BKK
15/5Wed
multi-stopOman Air
28h 30mBKK-LHR
€650
5/5Sun
multi-stopEtihad Airways
16h 05mLHR-BKK
6/6Thu
multi-stopEtihad Airways
27h 20mBKK-LHR
€656
6/5Mon
multi-stopEtihad Airways
16h 05mLHR-BKK
7/6Fri
multi-stopEtihad Airways
15h 30mBKK-LHR
€680
4/5Sat
multi-stopVietnam Airlines
35h 50mLHR-BKK
8/5Wed
multi-stopVietnam Airlines
27h 50mBKK-LHR
€1,105
8/5Wed
multi-stopVietnam Airlines
33h 25mLHR-BKK
24/5Fri
multi-stopVietnam Airlines
28h 40mBKK-LHR
€1,154

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London Heathrow Airport - Southeast Asia Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Cabin classes:

€5,144
€389
€934
€49

Browse origins:

  • Flights » 
  • London » 
  • London Heathrow Airport

Browse destinations:

  • Flights » 
  • Southeast Asia