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Cheap Flights from Heathrow to Southeast Asia

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Manila
Manila1 stop$581
Singapore
Singapore1 stop$627
Denpasar
Denpasar1 stop$841
Hanoi
Hanoi1 stop$547
Phuket City
Phuket City1 stop$644
Cebu City
Cebu City2 stops$847
Phnom Penh
Phnom Penh1 stop$636
Chiang Mai
Chiang Mai1 stop$652
Angeles City
Angeles City2 stops$991
Ko Samui
Ko Samui1 stop$1,064
Davao City
Davao City2 stops$1,032
Manila
Manila1 stop$581
Singapore
Singapore1 stop$627
Denpasar
Denpasar1 stop$841
Hanoi
Hanoi1 stop$547
Phuket City
Phuket City1 stop$644
Cebu City
Cebu City2 stops$847
Phnom Penh
Phnom Penh1 stop$636
Chiang Mai
Chiang Mai1 stop$652
Angeles City
Angeles City2 stops$991
Ko Samui
Ko Samui1 stop$1,064
Davao City
Davao City2 stops$1,032
Booking Insights

Price, demand and travel trends for London Heathrow Airport to Southeast Asia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from London Heathrow Airport to Southeast Asia cheaper or more expensive than last year?

Fares from London Heathrow Airport to Southeast Asia are about the same as they were in November last year, averaging $819 round-trip.

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

November is typically the cheapest month to fly from London Heathrow Airport to Southeast Asia, with round-trip fares averaging $829. December and July are usually the most expensive, averaging $1,333 and $1,233, respectively.

How do fares from London Heathrow Airport to Southeast Asia vary by day of the week?

On average, Tuesday is the cheapest day to fly from London Heathrow Airport to Southeast Asia and Saturday is the most expensive. Looking at the past 12 months of KAYAK data, it's 11% more expensive to fly on a Saturday compared to Tuesday.

What's the best time of day to fly from London Heathrow Airport to Southeast Asia?

It's cheapest to fly to Southeast Asia at night with average prices of $917. The afternoon is the most expensive time to fly, with average prices of $1,127.

What's the best time to book a flight from London Heathrow Airport to Southeast Asia?

Book your flights 13 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 9% compared to booking at the last minute (within 2 weeks of departure).

Key details for London Heathrow Airport to Southeast Asia flights

Low season

October
Beat the crowds with an average 27% drop in travelers.
The most popular month to fly with an average 16% increase in travelers.

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

Insights shared by verified travelers who flew the route from Heathrow to Southeast Asia 
MartinFlew with Singapore Airlines-Jan 2025
It’s a long time sitting in that seat so sit on a cushion!
Verified travelerFlew with Qantas Airways-Sep 2024
Unless you’re flying Business or First Class, definitely take your own travel pillow - they make a difference.
OmarFlew with Qantas Airways-May 2024
Qantas lounge was crowded. try other One World lounges
Verified travelerFlew with Singapore Airlines-Feb 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.

Your London Heathrow Airport to Southeast Asia flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • How much should I budget for a flight from London Heathrow Airport to Southeast Asia?

    Over the past 12 months, round-trip fares from London Heathrow Airport to Southeast Asia have typically cost between $812 and $1,291.

  • Which airlines fly nonstop from London Heathrow Airport to Southeast Asia?

    Based on the flight schedule for the next 3 months, 6 airlines operate nonstop flights from London Heathrow Airport to Southeast Asia, including:

    • Singapore Airlines
    • British Airways
    • Qantas Airways
    • Vietnam Airlines
    • Virgin Atlantic

  • Is it cheaper to fly with a layover from London Heathrow Airport to Southeast Asia?

    Yes, nonstop flights from London Heathrow Airport to Southeast Asia average $1,000 over the past 12 months, but flights with a layover can cost less. The most affordable connecting airports are:

    • Bengaluru Intl (BLR) (avg. price $656)
    • Haikou Meilan Intl (HAK) (avg. price $683)
    • Chengdu Tianfu Intl (TFU) (avg. price $708)

  • How long is a flight from London Heathrow Airport to Southeast Asia?

    Nonstop flights from London Heathrow Airport to Southeast Asia take 13h 03m on average.

  • Which cabin classes are available from London Heathrow Airport to Southeast Asia?

    On flights from London Heathrow Airport to Southeast Asia you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks around Southeast Asia?

    Southeast Asia is home to many popular sights. KAYAK travelers' favorites include:

    • Patong Beach
    • Pattaya Beach
    • Kata Beach
    • Railay Beach

  • What are the earliest and latest flights from London Heathrow Airport to Southeast Asia?

    The earliest nonstop flight from London Heathrow Airport to Southeast Asia departs at 9:10 am and the latest leaves at 9:45 pm. Nonstop flights take about 13h 03m.

Your guide to booking London Heathrow Airport to Southeast Asia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 13 weeks before your trip. KAYAK data shows fares in this window are around 9% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • Flexible with your dates? Fly in November to save some money. It's typically the cheapest month on this route, while flights in December will cost you the most.
  • Fly out on a Tuesday to get the cheapest fares. Avoid Saturday flights, which are about 11% more expensive.
  • Start your trip in Bangkok, the most popular destination in Southeast Asia. From there, it's easy to continue on to other popular spots such as Singapore, Ho Chi Minh City and Manila.

Reviews of the top 5 airlines serving 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.
8.2
Singapore AirlinesOverall score based on 1633 reviews
8.0Comfort
8.6Crew
8.3Boarding
8.0Entertainment
7.8Food
Airline reviews

It was all good. Lovely attention by the crew. I lost my glasses but they did everything and eventually found them. They clean the toilets regularly which is a big plus for me.

10.0 ExcellentAnonymous, Sep 2026
Read more Singapore Airlines reviews

It was all good. Lovely attention by the crew. I lost my glasses but they did everything and eventually found them. They clean the toilets regularly which is a big plus for me.

Subject: Complaint Regarding Cabin Temperature on Flight SQ447 (DAC–SIN)** Dear Singapore Airlines Customer Service, I am writing to express my disappointment regarding my recent experience on flight SQ447 from Dhaka (DAC) to Singapore (SIN). After boarding, it became apparent that the cabin air conditioning was not functioning adequately. When we initially raised the concern, a flight attendant informed us that it would take approximately 10 minutes for the temperature to cool down once the aircraft began operating. We trusted this explanation; however, the cabin remained uncomfortably warm, and many passengers—including my family—were sweating for an extended period. After approximately 45 minutes, I raised the issue again. While the attendant mentioned that adjustments had been made, the response did not reflect the seriousness of the ongoing discomfort. It was only after about an hour into the flight that the temperature finally improved and the cabin became more comfortable. I also spoke with several other passengers seated nearby, and they confirmed they were experiencing the same issue. As a frequent traveler who has always associated Singapore Airlines with high standards of service, this experience was very disappointing. It has made me reconsider choosing this route with your airline in the future. I hope you will review this incident and take the necessary steps to ensure that such situations are handled more promptly and professionally going forward. Thank you for your attention to this matter. Sincerely, Mohammed Shahriar

Really great service throughout and the food was really nice. I can highly recommend thank you very much.

It was okay. I feel that Singapore Airlines isn't as good as it used to be but it's still not bad

Delayed 1hour due to storm still didn't get window seat for third flight despite paying £240 extra to book them

Flight from SFO did not include entertainment as it was not working the entire duration of the flight. Was informed that there would be a $350 voucher for the inconvenience. Uncertain how the voucher will be provided.

Service excellent would chose Singapore airlines as my first choice

Perfect experience from boarding through to leaving the flight, comfortable and personalised service from all staff, highly recommended

The male traveller seated in the row in front diagonally opposite my husbands seat across the aisle as soon as the seatbelt sign went off moved across the aisle into the seat in front of my husband for the entire journey from London to Singapore he had his seat reclined and pushed back and the seat touching my husbands knees for the entire journey from London to Singapore. very uncomfortable for my husband.

More Baggage limit Alternative of virtual check in at airport , prefer personal touch with “real person”check in counter for baggage drop

transit accommodation. if you dont travel with partner , it would seem fairer to only charge half the room cost to make up the difference.

Excellent service from the staff always!!!! Very professional staff! Thanks for the hot tea that I needed throughout the flight I had a problem with my entertainment screen, the movie kept restarting. Overall, a great flight and I would fly China Southern again ! Great Job 👏

The barcode on the boarding pass could be made for everyone not just the wechat user.

Seats not comfortable. We had requested vegan meal and it wasn’t given.

Poor seats. Not helpful crew. The food was awful.overall very very bad experience. Traveled with the family of 5

China Southern was not the problem. I booked my flight through Kayak and also received a booking reference and alert details regarding departure time and gate numbers… however Kayak NEVER actually booked my flight! We were stranded at the airport without a flight for a long awaited holiday!

The crew were kind, patient and responsive. The service was excellent, even though we travelled the cheapest economy class. We arrived at our destination 40 min early, which for a 15+ hour flight is a great bonus. The boarding seemed a bit "loose", but got us boarded on time, and the plane was off exactly @ 0:30 hrs.

The back of the chair - premium economy could not move back - not worth the price

We bought the business class tickets. The check-in staff and onboard crew were excellent, providing commendable service throughout. However, it was disappointing to find that China Southern Airlines does not have a lounge at SFO. Instead, passengers were provided with a $35 per person food voucher, which fell short of expectations. Furthermore, the quality of the onboard food left much to be desired, marking a significant decline compared to our previous flight experience in 2019, prior to the pandemic.

The flight was okay it was the kayak customer service that was poor, I have been trying to change my name on my flight ticket 3 days before my flight and nothing got done about it even tho I messaged so many times and phoned, all I got in return was that is was being processed and still to this day nothing has been done about it, I think it’s disgusting and un needed stress to the trip.

Weren’t even given earphones to use the entertainment system

The meals were not the greatest and lacking of appetite but everything else was spot on

Overall, excellent: check-in, boarding, service, and food. The Business Class seating is a little less private and spacious than the world's premier airlines, but still very good for a long haul flight.

On time. Friendly and helpful flight attendants. The plane was clean. Having a wine available would have been nice.

I hate that you cannot check in online and when you are at the airport, there aren't any aisle seats left. Also, they could work a little on subtitles for their movies (not everyone is a native English speaker).

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!

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

Very lovely aircraft and crew. Seats were comfortable and the food was great and served swiftly. Delayed flight due to a passenger coming off the flight but overall a great experience

Terrible experience resolving missed connection after flight was delayed. 3 hour queue at transit desk, not enough staff, no organisation, worst ever flying experience.

The rows of seats in economy class are seriously close to one another making eating and resting just about impossible - there is hardly any legroom. Anyone larger than average size would have an incredibly uncomfortable flight. I had to basically share my seat with the lady passenger next to me as she was too big to fit into her allotted seat.

Food was good, attendants were friendly. Seats were not comfortable. Did not receive any amenities such as eyemask or earplugs that would have helped sleep. Additionally a large group of passengers boarded very late into boarding and were a disruption for almost the whole flight. Flight attendants did their best but the kids were making so much noise, kicking seats, and half the time no adult was sat with them so they weren’t being managed.

I staff or crew they were very friendly and humbly, they done theirs service very well, I appreciate them and thank you to the company or Qatar 🇶🇦 Government for providing as good service in their flight ,once again, thank you 😊 🙏 😀 😉 👍

Crews are very rude and unhelpful. Cramped seats in economy. Foods are useless

Lovely aircraft and I flight entertainment. Good leg room. Full flight crew struggled a bit

Food not good as good as last time flew with them

Seats very uncomfortable, impossible to sleep. Food average, bakery items not fresh. Pockets in seats not large enough to hold a book and a few other items. Cabin temperature too cold, even with blanket. Good selection of movies. Other than that 12 hours of torture!

They will charge you money even for laptop bag pack. Be cautiou about it.

On time and no hassle luggage policy (2 checked in and 1 cabin bag)

They lost the baggage and said it was deleted from the system. I had baggage tag so was able to file the complaint but there was no PIR number and update so far

I booked tickets for a family of five and specifically paid extra to select our seats together. We spent nearly $1,000 extra (around $100 per seat) for extra legroom so we could sit near each other. However, despite paying for this, we ended up being separated on the flight. This caused a major issue for our family because my parents do not speak English and rely on me to translate and assist them during the journey. I do not understand why Etihad changed our reserved seats without explanation. I am extremely dissatisfied with this experience. I expect the airline to do better, and I am requesting a full refund for the seat selection fees we paid.

1 hour delay meant missed my connecting flight and 1st day of holiday

Etihad Check In counter/Station manager in Heathrow was bothering and not helpful at all. They are rude and not customer oriented

I am a larger than average person and in my opinion i don't think it's fair to allocate a window seat to anyone who is my size or larger, i was seated between 2 large passengers on a full aircraft. The guy in the window seat also occupied a portion of the middle seat (my seat) which made my experience of flying with etihad very cramped and uncomfortable, i was flying from Abu Dhabi to Bangkok. Had this been a airbus 380 it would have been better as the seats are larger but unfortunately it wasn't so i had to endure the 6+hrs unable to get any rest

The flight take time was changed 23 times. The system kept sending messages it will be earlier at 4am and eventually the flight was at 9am I didn’t sleep all night because of that

The business class experience is fantastic. The crew were polite but often unavailable even when I tried to call them! I even found myself bringing my used dishes and cutlery up to the crew because no one had come to collect it after over an hour.

Very unfriendly team. It was very difficult to get a cup of coffee. Legroom was extremely small. Old, dilapidated plane.

Very very bad service very tight seats never ever flying with Etihad again

More options for your flight to Southeast Asia

Complete your trip to Southeast Asia with a hotel stay or car rental