฿12,783 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 16/9. 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
1 adult, Economy, 0 bags

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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Everything you should know

Cheapest return fare
฿20,368
Typical prices: ฿36,616-฿27,119
Air China
Wed 26/8Wed 25/11
LHR - BKK • 1 stop
Cheapest direct flights
฿26,939
Typical prices: ฿44,397-฿32,922
EVA Air
Tue 3/11Tue 1/12
LHR - BKK • Direct
Top airlines
Cheapest • from ฿20,368 (return)
Best reviews • 8.5 score
Airline reviews
Airline reviews
+1
+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
Insights
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Avoid delays
Most punctual • 93% on-time
Best time • Fewest delays
Insights
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When to book
in advance
Our data shows that travellers who book at least 7 weeks in advance save around 12% 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

Wed 26 Aug - Wed 25 Nov
Air China Logo
20:25 - 13:35
LHR
-
BKK
35h 10m
1 stop
Air China Logo
01:30 - 17:50
BKK
-
LHR
23h 20m
1 stop
฿20,368Air China
Sat 29 Aug - Thu 3 Sep
Shenzhen Airlines Logo
22:05 - 11:10
LHR
-
BKK
31h 05m
1 stop
Shenzhen Airlines Logo
03:15 - 20:00
BKK
-
LHR
22h 45m
1 stop
฿20,400Shenzhen Airlines
Sat 29 Aug - Tue 1 Sep
Shenzhen Airlines Logo
22:05 - 11:10
LHR
-
BKK
31h 05m
1 stop
Shenzhen Airlines Logo
19:15 - 20:00
BKK
-
LHR
30h 45m
1 stop
฿20,433Shenzhen Airlines
Wed 2 Sep - Sun 6 Sep
ไห่หนานแอร์ไลน์ Logo
22:00 - 10:00
LHR
-
BKK
30h 00m
1 stop
ไห่หนานแอร์ไลน์ Logo
19:20 - 19:30
BKK
-
LHR
30h 10m
2 stops
฿20,629ไห่หนานแอร์ไลน์
Fri 4 Sep - Sun 6 Sep
ไห่หนานแอร์ไลน์ Logo
22:00 - 10:00
LHR
-
BKK
30h 00m
2 stops
ไห่หนานแอร์ไลน์ Logo
19:20 - 19:30
BKK
-
LHR
30h 10m
2 stops
฿20,662ไห่หนานแอร์ไลน์
Wed 2 Sep - Sun 13 Sep
ไห่หนานแอร์ไลน์ Logo
22:00 - 10:00
LHR
-
BKK
30h 00m
1 stop
ไห่หนานแอร์ไลน์ Logo
19:20 - 19:30
BKK
-
LHR
30h 10m
2 stops
฿20,695ไห่หนานแอร์ไลน์
Sun 6 Sep - Sun 6 Dec
Air China Logo
22:40 - 18:20
LHR
-
BKK
37h 40m
1 stop
Air China Logo
19:30 - 17:50
BKK
-
LHR
29h 20m
1 stop
฿20,760Air China
Sat 29 Aug - Mon 23 Nov
Air China Logo
22:40 - 13:35
LHR
-
BKK
32h 55m
1 stop
Air China Logo
01:30 - 15:55
BKK
-
LHR
21h 25m
1 stop
฿20,793Air China
Thu 1 Oct - Wed 7 Oct
Emirates Logo
20:40 - 20:45
LHR
-
DMK
18h 05m
1 stop
Emirates Logo
23:50 - 12:25
DMK
-
LHR
18h 35m
1 stop
฿29,293Emirates
Mon 31 Aug - Wed 30 Sep
Emirates Logo
09:05 - 11:25
LHR
-
DMK
20h 20m
1 stop
Emirates Logo
12:10 - 07:05
DMK
-
LHR
24h 55m
1 stop
฿29,358Emirates
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 August.

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 ฿37,242 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 Sundays 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 Saturday 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 September, where tickets cost ฿25,599 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is ฿40,114 and ฿37,172 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 7 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Cheapest flight฿12,783
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 ฿12,783 for a one-way ticket and ฿20,368 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 1474 reviews
8.7Crew
8.1Food
8.3Comfort
8.4Boarding
8.0Entertainment
Airline reviews

Great food on both legs and fast customer service from the stewardesses....

10.0 ExcellentTony, Jun 2026
LAX - CRK
Read more EVA Air reviews

Great food on both legs and fast customer service from the stewardesses....

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.

More seat space More bathrooms Charging outlets Plane was old

The soft service on EVA was superb from the quick and attentive flight attendants, to the turn down service, and excellent food. This all made my 11 hour flight very comfortable and relaxing.

My seat arrangement was good with Eva Air. The toilet sanitary was good ( hand wash, face moist spraying, fresh air spray, hair moisturizer). But the Asian movie selection was not great at all.

Certain flight crew member were rude and short with me when I asked questions.

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

Seats. there's no way to go to the washroom when you’re seated in the middle without bothering the person beside you.

I like soft landing with Oman air both ways,food could have been better it was very poor

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.

Joyful and pleasant. Food is amazing staff are so welcoming seats are comfortable. I would like to thank Shahrazad for her amazing service,

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.

If you fly more often with Oman on the same route, you will realize the offered food is always the same. Quality of food is good, however, it is getting boring to know there is a soup or salad with goat cheese as starten and maincourse there is lamb, fish or vegetarian pasta. Pasta is always nice.

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

Everything was great in the business class. Seats 1A and 1C wouldn't recline properly. If i stood up then it did recline, even when the crew checked it he made me stand up recline it all the way and then he said "ok now you can sit" i just laughed it off.

Gate and boarding processes were handled smoothly and efficiently. Both (connecting) flights departed and arrived on time. The cabin crew seemed anxious and a bit stressed/rushed. Food service was OK, but the hot food dishes were poor quality.

HAVING ANNOUNCEMENTS FOR PEOPLE TO BOARD ACCORDING TO GROUP IS ESSENTIAL N ENSURING N CUTTING OF QUEUES, EXCEPT FOR PRIORITY CLASS PASSENGERS ON A SEPARATE Q

We still get drinks and a snack. Love the gift bags too.

business class is old but still done very well by the team.

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

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

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.

Need to improve on punctuality. My flight was delayed by 1 hour.

The flight from HYD to DOH was delayed by 3 hours and we missed the connection from DOH to MIA. We had to wait 24H more to get the MIA flight. It was a total disaster. If the flight crew had waited 1 more hour to accommodate their 3 hour delayed flight, we would not have lost a whole day !

Amazing airline accommodations. The cabins were so great. The food was very good and the flight attendants were so nice. Made a 15 hour flight seem easy.

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.

Nice airline. I was in a really weird seat which had extra leg room, but no basket or stowage. And the people next to me were pretty noisy during the flight, so it was hard to rest. I wish staff came around to pick up trash more often as I had no where to put it except my lap or the floor.

Plane was good Crew was good Food was just ok Could have had more entertainment options But overall good

no qatar did noting wrong Kayak messed up my whole vacation . Went early to check in at The Cairo, Egypt airport to find our I had not tickets to board , Kayak and/or Affirm never sent the money for my flight that I paid for and booked. So I had no flight at 12am in a foreign country and I had to scramble and find anther very costly other option just so that could fly home. Fucken horrible experience.

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Awesome hospitality, awesome staff, awesome food & awesome travel time. Thanks

I would love the entertainment center to be updated with more content. The flight to Doha had more options than the one to Miami

I prebooked a comfort plus seat on this flight and therefore the flight was comfy. I got the correct seat in the correct section of the plane that I have booked, that's this. Flight was comfortable. Staff were average on the flight, appearing to be rushed and short in engagement with travellers, perhaps this to maximise there rest time on the flight.

I payed for extra leg room but in last moment my seating place was changed and i got standard one seat. Staff was not able to do anything , so was very disappointed because of this.

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

Good service. But on flight to Kochi no entertainment except in app. And no working outlets to charge phone.

Good flight. There were a few issues with the flat bed. It was some technical issues. Otherwise everything was good

It was mediocre. Honestly, the flight was late but that didn’t bother me as I had plenty of time. The only thing that bothered me is that the crew never asked to make the beds for us in business class. Maybe the crew was exhausted and that just didn’t occur to them.

The flight was over 1 hour late taking off ,when I arrived in Abu Dhabi ,I missed my connecting flight to Bangkok so I had to wait almost 6 hours for my flight arriving in Bangkok at 6:30 am ,So I missed a whole day of my vacation and my hotel room sat empty so I paid for hotel days that I was not there. In Abu Dhabi there was a woman that worked the desk at transfers that was so professional, courteous , helpful,and may I say absolutely beautiful .she got me food vouchers for my layover and was a very calming presence. Besides that I will never use Etihad again I will pay the Xtra money . I'm sure they won't read or see this but it's my "2 cents" I'll use an airline that respects me and my hard earned dollars

Nice crew , clean cabin , food was delayed due to problem with the quantity .

On this flight...fine. The one from India to Abu Dahbi, awful.

I booked and paid for a Business Class seat for myself and my wife. 4 hours before the flight i get a call saying the plane they sent doesn't have the correct layout to accommodate all the business class seats they sold me 3 months earlier at a premium of $1500 a ticket. So they have to bump me from Business to Economy and will give me a $400 credit (total of $800 for both seats) that I could turn in at Abu Dahbi for $400 in US cash. They then promised a row that we could have to ourselves and the arm rests would go up so we could spread out for each of us. My wife was taken care of but I was put in the exit row with the flight attendents set as part of the three...and the arm rest did not go up. When we got to Abu Dahbi, they would not exchange our credit for cash as promised. Very disappointed they took my money 3 months ago and refused to reimburse for the change in seats or follow the promises made.

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

Information on your arrival and departure airports