£241 Find Cheap Flights from London Heathrow Airport to Bangkok

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 Bangkok departing on 27/4. 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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KAYAK searches hundreds of travel sites at once for deals on flights to Bangkok

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Bangkok.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Bangkok.
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Cheap Flight Deals from Heathrow to Bangkok (LHR-BKK)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Bangkok that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Heathrow to Bangkok

KAYAK's recommended return flight deals from the most popular airlines that fly from Heathrow to Bangkok.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
China Eastern Logo
21:20 - 20:55LHR-BKK
17h 35m1 stop
China Eastern Logo
21:55 - 18:40BKK-LHR
26h 45m1 stop
£373China Eastern
Find Deal
Tue, 20 May - Tue, 27 May
China Eastern Logo
21:20 - 20:55LHR-BKK
17h 35m1 stop
China Eastern Logo
05:05 - 18:40BKK-LHR
19h 35m1 stop
£373China Eastern
Find Deal
Sat, 3 May - Mon, 12 May
China Southern Logo
22:10 - 16:50LHR-BKK
36h 40m1 stop
China Southern Logo
08:20 - 19:00BKK-LHR
16h 40m1 stop
£377China Southern
Find Deal
Mon, 12 May - Sun, 25 May
China Southern Logo
22:10 - 10:20LHR-BKK
30h 10m1 stop
China Southern Logo
08:20 - 19:00BKK-LHR
16h 40m1 stop
£379China Southern
Find Deal
Mon, 12 May - Sun, 25 May
Shenzhen Airlines Logo
22:05 - 02:15LHR-BKK
22h 10m1 stop
Shenzhen Airlines Logo
03:15 - 19:50BKK-LHR
22h 35m1 stop
£418Shenzhen Airlines
Find Deal
Sat, 7 Jun - Fri, 13 Jun
Shenzhen Airlines Logo
22:05 - 02:15LHR-BKK
22h 10m1 stop
Shenzhen Airlines Logo
03:15 - 20:00BKK-LHR
22h 45m1 stop
£421Shenzhen Airlines
Find Deal
Sun, 1 Jun - Sat, 7 Jun
Air China Logo
20:25 - 00:10LHR-BKK
21h 45m1 stop
Air China Logo
19:35 - 20:30BKK-LHR
30h 55m1 stop
£437Air China
Find Deal
Tue, 20 May - Fri, 30 May
Air China Logo
20:25 - 00:10LHR-BKK
21h 45m1 stop
Air China Logo
01:30 - 20:30BKK-LHR
25h 00m1 stop
£438Air China
Find Deal
Thu, 5 Jun - Wed, 11 Jun
Air India Logo
12:30 - 13:35LHR-BKK
19h 05m1 stop
Air India Logo
20:50 - 19:30BKK-LHR
28h 40m1 stop
£441Air India
Find Deal
Mon, 9 Jun - Mon, 23 Jun
Air India Logo
21:05 - 19:35LHR-BKK
16h 30m1 stop
Air India Logo
20:50 - 10:15BKK-LHR
19h 25m1 stop
£488Air India
Find Deal
Sat, 10 May - Thu, 29 May

Expert advice for your flight from Heathrow to Bangkok

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are specific to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Thai Airways

Thai Airways’ Royal Silk Class offers exquisite service and Thai meal options like green curry.


Thai Airways offers generous baggage policy with at least 20 kg checked bags for all passengers.

EVA Air

EVA Air offers generous baggage allowances with two free checked bags on long-haul flights.


EVA Air’s Royal Laurel Class offers direct aisle access and pre-order meals like signature rack of lamb.

Read more about EVA Airby Robert Schrader
Airports
LHR

Heathrow offers Fast Track security with advance booking, ideal for busy travel days like Fridays and weekends.

Read more about LHRby Kirstie Pickering
BKK

Use the Airport Rail Link from BKK to reach central Bangkok in under 30 minutes, avoiding traffic.

Read more about BKKby Duncan Madden
Our travel experts
Robert Schrader

Robert Schrader

Expert on Thai Airways and EVA Air

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site, Leave Your Daily Hell, in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Duncan Madden

Duncan Madden

Expert on BKK

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Kirstie Pickering

Kirstie Pickering

Expert on LHR

Kirstie Pickering

Kirstie Pickering

Aviation and business journalist Kirstie didn’t leave England until she was 18 years old, but has since travelled to over 20 countries including Japan, Canada, and Iceland. Her travel expertise lies in European city breaks, including how to find the best locally-owned hotels and restaurants and how to optimise the airport experience for your needs.

Read more

KAYAK's insights & trends for Heathrow to Bangkok flights

Get data-powered insights and trends into flights from Heathrow to Bangkok to help you find the cheapest flights, the best time to fly and much more.
Find cheap flights to Bangkok
Find cheap flights to Bangkok

Planning a trip from Heathrow to Bangkok? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What is the cheapest London Heathrow Airport to Bangkok flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London Heathrow Airport to Bangkok.
Our data shows that the cheapest route for a return flight from London Heathrow Airport to Bangkok cost £590 and was between London Heathrow Airport (LHR) and Bangkok Suvarnabhumi Airport (BKK). On average, the best prices are found if you fly this route. The average price for a return flight for this route is £590.

What’s the cheapest day of the week to fly from London Heathrow Airport to Bangkok?

The average price of all round-trip flights from London Heathrow Airport to Bangkok clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from London Heathrow Airport to Bangkok, look for departures on Wednesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Bangkok, Tuesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Bangkok, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London Heathrow Airport to Bangkok is May, where tickets cost £610 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £917 and £914 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Bangkok, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from London Heathrow Airport to Bangkok, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know - Cheap tickets from London Heathrow Airport to Bangkok

Cheapest flight

£241
Flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport

When to book flights from Heathrow to Bangkok

Are your dates flexible? Find out the best times to travel from Heathrow to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Bangkok flights

  • What is the cheapest flight from London Heathrow Airport to Bangkok?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Bangkok was £322 for a one-way ticket and £498 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Bangkok?

    London Heathrow Airport is served by only 1 airport and there are 2 airports in Bangkok. You will leave London Heathrow Airport from London Heathrow and you will be arriving in Bangkok at one of these airports: Bangkok Suvarnabhumi or Bangkok Don Mueang Intl.

  • Which aircraft models fly most regularly from London Heathrow Airport to Bangkok?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Bangkok?

    SkyTeam, and Star Alliance are the airline alliances operating flights between London Heathrow Airport and Bangkok, with Star Alliance being the most commonly used for this route.

  • What is the most popular stopover when flying to Bangkok from London Heathrow Airport?

    Abu Dhabi is the most popular stopover city among KAYAK users travelling from London Heathrow Airport to Bangkok.

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

    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 Bangkok.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok 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 Bangkok?

    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 Bangkok 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 Bangkok?

    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 Bangkok 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

Prefer to fly direct from London Heathrow Airport to Bangkok?

Find which airlines fly direct from London Heathrow Airport to Bangkok, which days they fly and book direct flights.

Direct departures

London Heathrow to Bangkok

Monday

EVA Air, Thai Airways

EVA Air, Thai Airways

Tuesday

EVA Air, Thai Airways

EVA Air, Thai Airways

Wednesday

EVA Air, Thai Airways

EVA Air, Thai Airways

Thursday

EVA Air, Thai Airways

EVA Air, Thai Airways

Friday

EVA Air, Thai Airways

EVA Air, Thai Airways

Saturday

EVA Air, Thai Airways

EVA Air, Thai Airways

Sunday

EVA Air, Thai Airways

EVA Air, Thai Airways

See more direct flights

Direct returns

Bangkok to London Heathrow

Monday

EVA Air, Thai Airways

EVA Air, Thai Airways

Tuesday

EVA Air, Thai Airways

EVA Air, Thai Airways

Wednesday

EVA Air, Thai Airways

EVA Air, Thai Airways

Thursday

EVA Air, Thai Airways

EVA Air, Thai Airways

Friday

EVA Air, Thai Airways

EVA Air, Thai Airways

Saturday

EVA Air, Thai Airways

EVA Air, Thai Airways

Sunday

EVA Air, Thai Airways

EVA Air, Thai Airways

See more direct flights
See more direct flights

Top 5 airlines serving from Heathrow to Bangkok

 
See real verified KAYAK customer reviews for airlines flying from London to Bangkok. 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 Bangkok? 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.
8.4
EVA AirOverall score based on 1179 reviews
8.6Crew
8.4Boarding
8.0Entertainment
8.3Comfort
8.1Food
Airline reviews

Sub sandwhich for a snack through mid flight and giving a bottle water was a good idea

8.0 ExcellentAnonymous, Mar 2025TPE - IAH
Read more EVA Air reviews

Sub sandwhich for a snack through mid flight and giving a bottle water was a good idea

For the price, it was better than other airlines; quality of food and service was very good.

I appreciate the email reminders for online check-in which made my entry to the lines less stressful. The flight was on schedule and on time. The baording staff were proactively helpful and approachable. The airplane inflight food, entertainment and comfies as well as provisions are excellent even in the economy seating. The airline transfer was smooth and easy! Luggage safe and intact! Thank you EVA airline for making my trip a reliable safe and comfortable experience.

Very smooth flight. Superb crew, great food and service. Slept most of the way. Excellent airline.

Excellent food. Good service. Crammed Premium Economy seats. I Asked to change seats during check in. They told me the flight was fully booked. But on board I saw empty seats where I could have been easily relocated.

Great service. Was there a food option? I was given food (I could have ordered ahead of time?) but had no choice. I like choice.

delayed and the cabin crew was like trainees.. a bit careless and not so pleasing to their job

Good. Please add a non- applicable category to your questions.

EVA air was nice. It was the first time I’ve flown with them. The poor entertainment choices for 2 long flights will make me think about choosing them next time. I didn’t know if would effect me so much but I couldn’t sleep and it added to the stress. The food was terrible for me but I couldn’t find how to inform them about my diet when I bought my ticket.

Boarding was good. It will be nice to have beer anytime. I asked for a beer at tea time & I was refused. Quite disappointed

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

I give EVA 5 stars in every category. I enjoy this airline and it's great team of employees. I always highly recommend EVA to friends and family and everyone.

The flight was delayed going out of the gate at BKK that made it a difficult challenge to get through immigration transfer at tapei and make it to my departure on time. This appears to be a recurring issue. The flight crew and cabin crew were excellent. The food was very nice.

The boarding efficiency was good. A couple of the flight attendants did not seem in the best of moods. Overall it was a good experience.

The setting configuration of the aircraft stinks. Nobody should pay business class fares and be so uncomfortable. The design of facing fellow passengers is a brilliant nincompoop.

Entertainment is limited with a relatively old catalogue. Wi-Fi never works and the cabin and lavatory had evidence of a lot of scuff marks and temporary repairs. Nothing unsafe, but a bit tatty in places.

Delayed flight in Singapore caused the transfer at Bangkok to be very stressful. Fortunately, no elderly were in this trip, else it will not be possible to catch the connecting flight. There were also several occasions throughout the flight journey where some of the passengers were not wearing their seat belts despite several remainders from the stewardess.

USB charging port was not working at my seat 48K.

I enjoy flying with Thai Airways, however their B788 business class configuration is quite dated. Additionally , while the service is always friendly and efficient, I’m getting tired of the same “usual suspects” when it comes to food choices. Since it was a lunchtime flight, what about some gourmet sandwiches or some type of salad dish for the main course? The entertainment options are also quite limited and this is not unique to TG, so much so that given the short duration of the flight I ended up not bothering with any entertainment. Finally, despite signs around the cabin advising wifi available, I was unable to con-net and in fact I’ve never been able to connect on any TG flight over the last year or so - what’s the go here??

Always liked Thai Airways but in the past they have been very expensive, not being a millionaire just yet, I will use cheaper airlines. Bangkok to London £370 11 hours 45 mins. Old plane but ok. Lovely ladies on board, very polite. Food was ok. Will always use them if the price is right.

I had to stay in the airport 15 even with a hotel reservation..i was refused to inter to qatar cuz the hotel was outside the airport. They could have offered a solution. It was really exhausting for me and my family.

I was unable to pre purchase sear upgrades or internet. Their online site is not user friendly and poor. I felt singled out in customs. Seats are very small even for a small person.

The only thing that could have been better, is that the food trays get left way to long after a meal. We had a snack 8 hrs into the trip, and they left us with the boxes and cups for way too long. It is not fun being trapped in your seat unnecessarily

Worst air experience in whole life . Boarding and checking was hassle as they did 3 times. Crew team was clueless about passengers need. Despite of passengers raising hand , they were resetting the program

There was not enough food for everybody. Some dishes were missing.

Do not overbook flights and kick out confirmed ticketed passengers :-(

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.

Fly Qatar Airways is always amazing. Their service and care for details is really very good.

Staff was very friendly. There is no on board entertainment, but it’s such a short flight that it doesn’t matter. We also got a meal which was nice and unexpected due to the length of the flight.

Flight was fine overall. What you would expect from economy seats. I did appreciate the amenities (eyemask, earplugs, small toothbrush and toothpaste, thin socks).

Etihad seems to have a very strict luggage enforcement. I am a very light passenger compared to other passengers which are mainly heavier. I do not understood why airlines enforce the weight restriction so strictly. I was overweight luggage of 1.5kg, but am probably 10+kg lighter than the average passenger. Other airlines are far more accommodating. Poor customer service as far as I am concerned. If weight is such an important issue to an airline they should charge passengers by total amount of body weight plus luggage. To me just ridiculous.

Crew Check-In – Kolkata (CCU) The crew handling check-in in Kolkata was outstanding—efficient, courteous, and highly organized. Flight Segment – CCU to Abu Dhabi (AUH) A standard flight overall. Notably, only one in-flight meal option—a vegetarian curry—was available, which seemed unsuitable for a red-eye journey. The crew offered no alternatives, which was unexpected. Flight Segment – Abu Dhabi to Rome (AUH-FCO) Comfort improved on this leg, but service quality was average, falling short of Etihad’s premium standards. Crew attention was heavily absorbed by a difficult couple in Row 15 (port side), resulting in disproportionate focus. It was concerning that a steward had to personally return to apologize, a task better suited for supervisory staff. This highlights a development opportunity for supervisors Anna and Quashim in managing guest escalation professionally.

Certainly! Here’s a more concise and refined version of your report, maintaining a polished and professional tone: --- Crew Check-In – Kolkata (CCU) The crew handling check-in in Kolkata was outstanding—efficient, courteous, and highly organized. Flight Segment – CCU to Abu Dhabi (AUH) A standard flight overall. Notably, only one in-flight meal option—a vegetarian curry—was available, which seemed unsuitable for a red-eye journey. The crew offered no alternatives, which was unexpected. Flight Segment – Abu Dhabi to Rome (AUH-FCO) Comfort improved on this leg, but service quality was average, falling short of Etihad’s premium standards. Crew attention was heavily absorbed by a difficult couple in Row 15 (port side), resulting in disproportionate focus. It was concerning that a steward had to personally return to apologize, a task better suited for supervisory staff. This highlights a development opportunity for supervisors Anna and Quashim in managing guest escalation professionally.

Flight was delayed due to slow boarding process by etihad. Update food options and movies as well.

Extremely bad food, they never gave our bags in time, the online check-in did not let us check in because we had Indian OCI not sure why we were given the option to check in then, because we couldn’t check in online we had to go in person and we were not able to change our seats and sit with our family

Used to Etihad employees are very rude and unprofessional but now better than before over all is okay now

we were delayed from Athens to Abu Dhabi by an hour and a half, so I had trouble connecting the flight from there to Bali. It could have been done had they waited even 15 mins. There was another lady who was in the same boat. By the time we were half way across the terminal, they have actually already issued different flights for us to go Jakarta then to Bali. Not to mention the inconvenience of waiting over 4 hrs at the airport and the subsequent inconvenience, we did not arrive to Bali till after 800pm the next day, which means I paid for the hotel for nothing when I could have been there before noon the next day! There was little explanation. It was just as well I needed some assistance getting around, otherwise the 2 of us would have been completely lost! Not going to fly with them again!

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 seat was like there is no leg space....there were no proper option for food in the airline. It seemed like the airline was at brink of bankruptcy. The crew was helpful except for a few.

Bad. Flight was very uncomfortable with narrow and shallow seats, very little food and water. I will not fly etihad again.

Communication between the captain/crew and the passengers needs to be improved.

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 !

Everything you need to know for your flight from Heathrow to Bangkok

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