฿13,901 Find Cheap Flights from London Heathrow Airport to Bangkok – Compare and Save

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 26/8. 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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Everything you should know

Cheapest return fare
฿21,154
Typical prices: ฿25,082-฿33,006
China Eastern
Thu 12/11Mon 23/11
LHR - BKK • 1 stop
Cheapest direct flights
฿26,123
Typical prices: ฿31,176-฿39,336
EVA Air
Mon 26/10Mon 18/1
LHR - BKK • Direct
Top airlines
Cheapest • from ฿21,154 (return)
Best reviews • 8.5 score
Airline reviews
Airline reviews
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+1
Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with EVA Air and Thai Airways. Average duration is 11h 40m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
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Avoid delays
Most punctual • 95% on-time
Best time • Fewest delays
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When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 11% compared to booking last minute.
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Booking Insights
Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Bangkok

Thu 12 Nov - Mon 23 Nov
China Eastern Logo
21:00 - 00:55
LHR
-
BKK
20h 55m
1 stop
China Eastern Logo
15:55 - 17:30
BKK
-
LHR
32h 35m
2 stops
฿21,154China Eastern
Tue 10 Nov - Sun 22 Nov
China Eastern Logo
21:00 - 22:35
LHR
-
BKK
42h 35m
2 stops
China Eastern Logo
01:55 - 17:30
BKK
-
LHR
22h 35m
1 stop
฿21,154China Eastern
Sun 1 Nov - Wed 4 Nov
Air China Logo
17:40 - 18:05
LHR
-
BKK
17h 25m
1 stop
Air China Logo
01:30 - 15:55
BKK
-
LHR
21h 25m
1 stop
฿21,254Air China
Fri 30 Oct - Tue 17 Nov
Air China Logo
17:40 - 18:05
LHR
-
BKK
17h 25m
1 stop
Air China Logo
01:30 - 15:55
BKK
-
LHR
21h 25m
1 stop
฿21,254Air China
Fri 16 Oct - Sat 14 Nov
โอมานแอร์ Logo
08:25 - 06:50
LHR
-
BKK
16h 25m
1 stop
โอมานแอร์ Logo
19:10 - 05:55
BKK
-
LHR
17h 45m
1 stop
฿22,194โอมานแอร์
Tue 20 Oct - Fri 30 Oct
โอมานแอร์ Logo
20:50 - 17:45
LHR
-
BKK
14h 55m
1 stop
โอมานแอร์ Logo
09:00 - 18:25
BKK
-
LHR
16h 25m
1 stop
฿22,194โอมานแอร์
Mon 5 Oct - Thu 26 Nov
เอทิฮัดแอร์เวย์ Logo
14:45 - 12:10
LHR
-
BKK
15h 25m
1 stop
เอทิฮัดแอร์เวย์ Logo
14:40 - 18:10
BKK
-
LHR
34h 30m
1 stop
฿23,773เอทิฮัดแอร์เวย์
Sat 22 Aug - Mon 7 Sep
เอทิฮัดแอร์เวย์ Logo
20:45 - 12:10
LHR
-
BKK
33h 25m
1 stop
เอทิฮัดแอร์เวย์ Logo
15:55 - 15:05
BKK
-
LHR
29h 10m
1 stop
฿23,940เอทิฮัดแอร์เวย์
Sat 23 Jan - Sun 14 Feb
Air India Logo
08:45 - 14:10
LHR
-
BKK
22h 25m
1 stop
Air India Logo
08:05 - 20:30
BKK
-
LHR
19h 25m
1 stop
฿25,586Air India
Sat 23 Jan - Sat 30 Jan
Air India Logo
08:45 - 14:10
LHR
-
BKK
22h 25m
1 stop
Air India Logo
08:05 - 11:30
BKK
-
LHR
34h 25m
1 stop
฿25,619Air India
Booking Insights

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.

How much is a return flight from London Heathrow Airport to Bangkok?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Bangkok departing in November.

Flight prices are below average for this route right now.

Flights to Bangkok from London Heathrow Airport usually cost between ฿30,522 and ฿42,441 in November.
The lowest price found in the past 5 days was ฿21,154 on China Eastern (10 Nov–22 Nov).

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

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London Heathrow Airport to Bangkok costs ฿30,887 on the route between London Heathrow Airport (LHR) and Bangkok Suvarnabhumi Airport (BKK). It is also the most popular route.

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 Mondays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Bangkok, Sunday is the cheapest day to fly and Friday 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 ฿26,526 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is ฿40,998 and ฿38,983 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 4 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Cheapest flight

฿13,901
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 5 days, the lowest price for a flight from London Heathrow Airport to Bangkok was ฿13,901 for a one-way ticket and ฿21,154 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?

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

  • 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.

Prefer to fly direct from London Heathrow to Bangkok?

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop from London Heathrow 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

Reviews of the top 5 airlines flying 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.
8.5
EVA AirOverall score based on 1506 reviews
8.3Comfort
8.0Entertainment
8.4Boarding
8.7Crew
8.1Food
Airline reviews

I put the review all together for the first review

6.0 GoodRichard, Apr 2026
TPE - BKK
Read more EVA Air reviews

I put the review all together for the first review

I liked that they gave us a couple of meals and drinks but the meal was not good and not many options especially if we are seated in the back of the plane.

Again on this leg the WiFi wouldn't work. The seats were comfortable with adequate cushion and space between seats for my legs. Very nice 3-hour flight.

Everything was great, however the seats in the back are very small. Not as Comfortable as I would have liked.

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.

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

Amazing crew, excellent food, business class seats seem a bit dated but are super comfy even for a very tall person. If continuing onto Taipei, the stopover in Bangkok is a bit annoying (queue at security) though the lounge is decent.

Boarding is fast and easy for economy class, food was ok baggage policies are good

Everything was fantastic! It was a short flight but the crew really went above and beyond to make it a great flight. I felt cared for with EVA.

Delayed due to no fault of flight crew. Efficient and worked well together.

We never got on the flight. It was delayed and we got moved to another flight. It was stressful and no communication involved!!!

Service for drinks and food really slow. Same food served on two long flights —LON to BKK. Would only fly if price was right - otherwise best avoided.

You guys need to check with your sub contractors. I had a confirmation email from airfare I don’t know then when I reach at the airport the check in offer did not see the ticket in the system. I had to issue another ticket at double the normal rate because I had to travel on the same day.

The seat was uncomfortable for me, less leg space and a tight space.

Very good - could have been more proactive asking for drinks as only got one all flight offered.

Man to Muscat the staff were poor. Missed bringing drinks to me & ran out of Beer. I didn't get a drink. Muscat to BKK staff excellent, food ok, and I was offered a drink.

Really a nice flight. , very comfortable seats and leg space.

Oman Air is on the relation Muscat-Salalah without any serious competition and that's to feel same as the metall bars of your seat in your backside after this flight. Don't expect anything other than being brought from A to B and you won't be disappointed

We missed our connection due to technical issues with the plane. We were stuck in Oman Airport for 5 hours, had to overnight there, got rerouted to London, were denied boarding on the plane, were then seated separately (as a family of 5), did not receive any notification of our luggage being in London, were denied boarding for the AA flight to Chicago, and then all seated separately again. Finally our luggage was lost. Worst experience ever. Will never fly on this airline again

Reduced cost for children to lounge Children’s area in airport Non spicy snacks Option of children’s meals Good films More children’s games and 2 player games Ran out of vegetarian meals

Excellent airline. The plane was clean and the staff were very attentive

I'm not interested in improving the airline. Therefore, I won't explain this in more detail. Next time I'll try a different one.

The flight (boarding) was delayed by 40-50 minutes and there was very crowed. They need to improve on the timeliness & boarding process. (They asked passenger to board in groups, but the 2nd group was standing there waiting for 20 minutes!). However, services from the crew was very good, also the food was good as well. I also found the legroom was quite comfortable.

Except that our flight was cancelled, by mail, and later moved to 12 hours prior, then the experience was good. In Bangkok we were offered a hotel, it was fine, but would have been nice to know in advance😉

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

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.

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.

Check in was a disaster. 90 minutes and only 2 economy check in desks open. Had to rush to catch the flight.

I couldnt go on this flight and lost all my money over 1,000 UK Pounds as my visa to Myanmar was not accepted :(

This flight was a very good trip for us. The crew were very friendly and helpful. They made arrangements for my husband to have assistance in boarding. We were not expecting a meal, so it was a pleasant surprise on this short flight to have a meal and beverage from a very courteous crew.

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.

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

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!

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

We have paid premium price for a business class Cabinet and we have received the old 777 with the following apart business class that is not to standard. It was very disappointing and it’s a very bad reputation for a premium airline company. This aeroplane should be the commission from being as a business class. We will pass this knowledge to our colleagues because the quality of business class in Etihad is not consistent and it is a lucky dip that sometimes you’re getting a good aeroplane and sometimes you’re getting their 30 years old aeroplane. The crew of the aeroplane have apologise and said that they hate this aeroplane and they have complained about it multiple times as well. Obviously Etihad is putting the economy in front of the Customer Experience. For the future we will not take this risk anymore and will fly with established company like emirates.

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

I paid 44 $ for seat upgrade (22D) and my seat was stack in high position for all the 6 hours of flight. I don't recommend the upgrade. I am looking to get my upgrade payment back

Same problem place in the middle so small Im 1,85 m so not good 👍

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 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.

The staff was very nice and polite but it was very very hot and no ways to have some fresh air. It would be nice to have more time to sleep since it was a night flight

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

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

Information on your arrival and departure airports