LHR - BKK

$387 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 4/30. 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 Suvarnabhumi Airport

 
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.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$567
Typical prices: $934-$699
Shenzhen Airlines
Fri 5/29Thu 6/18
LHR - BKK • 1 stop
Cheapest non-stop
$970
Typical prices: $956-$886
EVA Air
Tue 9/8Tue 9/29
LHR - BKK • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
EVA Air's Wi-Fi supports emails and basic browsing.
Heathrow has long security queues; arrive early.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $567 (round-trip)
Best reviews • 8.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop 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
Avoid delays
Most punctual • 92% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $553 (round-trip)
Shortest trip • 13h 33m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 9% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
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Expert advice
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 round-trip 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 round-trip flight deals from Heathrow to Bangkok

Fri, May 29 - Thu, Jun 18
Shenzhen Airlines Logo
10:05 pm - 2:15 am
LHR
-
BKK
22h 10m
1 stop
Shenzhen Airlines Logo
7:15 pm - 8:00 pm
BKK
-
LHR
30h 45m
1 stop
$567Shenzhen Airlines
Sun, May 10 - Fri, May 22
Shenzhen Airlines Logo
10:05 pm - 2:15 am
LHR
-
BKK
22h 10m
1 stop
Shenzhen Airlines Logo
7:15 pm - 7:50 pm
BKK
-
LHR
30h 35m
1 stop
$568Shenzhen Airlines
Fri, May 1 - Sun, May 24
SAUDIA Logo
4:15 pm - 1:45 pm
LHR
-
BKK
15h 30m
1 stop
SAUDIA Logo
3:25 pm - 7:30 am
BKK
-
LHR
22h 05m
1 stop
$569SAUDIA
Fri, May 1 - Sun, May 17
SAUDIA Logo
4:15 pm - 1:45 pm
LHR
-
BKK
15h 30m
1 stop
SAUDIA Logo
3:25 pm - 7:30 am
BKK
-
LHR
22h 05m
1 stop
$570SAUDIA
Mon, May 11 - Tue, May 19
China Eastern Logo
9:20 pm - 9:55 pm
LHR
-
BKK
18h 35m
1 stop
China Eastern Logo
7:10 pm - 6:40 pm
BKK
-
LHR
29h 30m
1 stop
$571China Eastern
Mon, Apr 20 - Mon, Jun 15
China Eastern Logo
9:20 pm - 12:40 am
LHR
-
BKK
21h 20m
1 stop
China Eastern Logo
5:05 am - 6:40 pm
BKK
-
LHR
19h 35m
1 stop
$573China Eastern
Mon, May 4 - Tue, May 12
Hainan Airlines Logo
10:00 pm - 10:00 am
LHR
-
BKK
30h 00m
2 stops
Hainan Airlines Logo
7:20 pm - 7:30 pm
BKK
-
LHR
30h 10m
1 stop
$574Hainan Airlines
Sat, May 2 - Sat, May 23
Shenzhen Airlines Logo
10:05 pm - 6:15 pm
LHR
-
BKK
38h 10m
1 stop
Shenzhen Airlines Logo
12:10 pm - 8:00 pm
BKK
-
LHR
37h 50m
1 stop
$576Shenzhen Airlines
Wed, May 6 - Thu, May 14
Hainan Airlines Logo
10:00 pm - 10:00 am
LHR
-
BKK
30h 00m
1 stop
Hainan Airlines Logo
11:05 am - 7:30 pm
BKK
-
LHR
38h 25m
2 stops
$577Hainan Airlines
Sun, May 3 - Thu, Dec 3
SAUDIA Logo
10:10 pm - 12:05 am
LHR
-
BKK
19h 55m
1 stop
SAUDIA Logo
3:20 pm - 7:30 am
BKK
-
LHR
23h 10m
1 stop
$578SAUDIA
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 round-trip flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport?

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

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 Suvarnabhumi Airport 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 Thursday, as it's usually the priciest day. When flying back from Bangkok, Wednesday is the cheapest day to fly and Thursday is the most expensive.

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

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 Suvarnabhumi Airport, 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 Suvarnabhumi Airport is May, where tickets cost $811 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $1,207 and $1,183 respectively.

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

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 Suvarnabhumi Airport, 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 Suvarnabhumi Airport, you should book around 6 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from Heathrow to Bangkok

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Robert Schrader

Robert Schrader

Expert on Thai Airways and EVA Air

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.

Duncan Madden

Duncan Madden

Expert on BKK and LHR

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.

Good to know

Low seasonJune
Cheapest flight$387
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from London Heathrow Airport to Bangkok

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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 Suvarnabhumi Airport?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport was $387 for a one-way ticket and $567 for a round-trip.

  • Do I need a passport to fly between London Heathrow Airport and Bangkok?

    Yes, you’ll need a passport to travel to Bangkok from London Heathrow Airport.

  • Which airlines offer Wi-Fi service onboard planes from London Heathrow Airport to Bangkok?

    Asiana Airlines, and SWISS offer inflight Wi-Fi service on the London Heathrow Airport to Bangkok flight route.

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

    The Boeing 777-300ER is the aircraft model that flies most regularly on the London Heathrow Airport to Bangkok flight route.

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

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

  • On which days can I fly direct from London Heathrow Airport to Bangkok?

    There are nonstop flights from London Heathrow Airport to Bangkok on a daily basis.

  • Which is the best airline for flights from London to Bangkok, EVA Air or Oman Air?

    The two airlines most popular with KAYAK users for flights from London to Bangkok are EVA Air and Oman Air. With an average price for the route of $1,067 and an overall rating of 8.5, EVA Air is the most popular choice. Oman Air is also a great choice for the route, with an average price of $749 and an overall rating of 8.1.

  • 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 travelers 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 round-trip ticket. You could then fly to Bangkok with an airline and back to London Heathrow Airport with another airline. Booking your flights between London Heathrow Airport and BKK can sometimes prove cheaper using this method.

  • 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.

KAYAK’s top tips for finding a cheap flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $736 or less one-way and $1,006 or less round-trip.

Prefer to fly direct from London Heathrow Airport to Bangkok?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London Heathrow to Bangkok Suvarnabhumi.
Find which airlines fly direct from London Heathrow Airport to Bangkok Suvarnabhumi Airport, which days they fly and book direct flights.

Direct departures

London Heathrow to Bangkok Suvarnabhumi

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 Suvarnabhumi 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 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.
8.5
EVA AirOverall score based on 1390 reviews
8.4Boarding
8.0Entertainment
8.3Comfort
8.1Food
8.6Crew
Airline reviews

My flight was amazing smooth and the attendants were so friendly and nice

10.0 ExcellentLaQuita, Mar 2026
TPE - LAX
Read more EVA Air reviews

My flight was amazing smooth and the attendants were so friendly and nice

Amazing customer service. BUT!! It would be nice if the flight attendants SMILE a little more, I know they are doing their job, but it is importantly to smile back and be warm to passengers. Nobody is trying to hit on them, it’s just being polite. So, please Taiwanese flight attendants: SMILE MORE WHEN YOU INTERACT WITH PAYING CUSTOMERS

What could have been better, was we were delayed from takeoff for two hours. Initially we were informed that we were delayed for refueling. Then we taxied out on the tarmac, then just waited there for a long time, with no explanation of the delay. Were we just waiting on takeoff clearance or was there some other reason for the delay? The pilot, nor none of the crew informed us passengers. That was not good customer service. That needs to be improved, whenever a delay, inform the passengers for the reason.

More new and classic movies in English. Boarding was a bit chaotic. Nore, clearer information during boarding to customers.

More seat space More bathrooms Charging outlets Plane was old

It was easy going check in was easy and pretty fast entertainment was up to date on movies and food was ok

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.

Flight attendants were very helpful and nice. Would be nice to board on time.

I love EVA airline, but the KAYAK website for not in emergency, urgency and personal issues. For instance, on January 5/2026 with already booked the flight, I have a 15 hours of delay between airport when booked before as my choice. But if I want to go back home (U.S) early, then I have to contact the KAYAK office at I was in other country without phone service and nothing that EVA can do for me. Even I offered to pay more to change from another flight to go to the U.S early, not wasting at15 hours of delay, but EVA could not help me until I call KAYAK at an Island of nation. No office of KAYAK from any nation and times of difference in the world. However, everything and everyone is the best. Therefore, please KAYAK making much more easy for both the airline and passenger in some issues at the middle of nowhere in some country when no need to call KAYAK for some emergency, urgency, sick, etc or personal reference. Please, please, please no need to call KAYAK office for any changes of flights from urgency or private.

Don’t preorder the diabetic meal if you don’t have to. Whoever creates those meals thinks everyone loves fish, and hates seasoning. In a world where we can find diabetic friendly candy and low card bread, it’s surprising that places are still serving flavorless gelatin and rice cakes. Boarding in Taipei was chaos. They tried to form a line but didn’t manage it. So once the gate was opened, the line didn’t matter and everyone just mobbed to the front.

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.

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.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

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😉

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.

Excellent service. The personal adaptation of menus and the individual timing of service of them is fantastic.

My flight was delayed. I was rebooked twice and even the second flight that was additional connection in London was delayed too, so I ended up spending more than 24 hours flying between four different countries and to be honest I’m not sure whether I ever want to use this airline again. My luggage is still delete. It’s been more than 48 hours now so to be honest, I’m not even sure how to describe the level of frustration I have.

The flight was operated by IndiGo and not Qatar, which is a budget airline from India. Nevertheless, the flight was uneventful.

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 was travelling 3.5 years after. Agree Economy is no business class but the food was mediocre. Ordered a Hindu meal, the salads were bitter . The food was really below quality and had no tast from what I had in the past. Indian Railways probably have a better quality food when compared. However the kids meal was really nice and really appreciate how they were taken care of. The restrooms were dirty .

It was excellent in all respects. I don’t think it needs any improvement

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 seats were uncomfortable. The service was poor. We bought internet for my family and myself and it didn’t work. The charger for our phone didn’t work. The service seemed like they were tired and exhausted and seemed a bit upset. It was not a good flight. Our flight from miami to Qatar was great but from Qatar to Tokyo was simply awful

Worse fight I ever take since I start flying , still have even made home , and crew abandon us half way home . No water no food and no even anyone to answer our questions

Business class ticket should include lounge access and seat selection. The food quality and varieties should be more. It was surpirise that no dessert was offered.

I liked the crew, the food and the foot space. I did not like the comfort of the seats.

Good one but just notice that you have to ask several time to get water or coffee .

Early arrival. Good boarding. Deplaning this flight is very slow both coming and going. Baggage arrived quickly for Pearson

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.

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

Kayak and Aran grant issuing business class tickets without lounge access and sometimes 1 or 2 connections in economy class. It’s very disappointing to find out that after buying the ticket. Never buy tickets on kayak and Aran grant again

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.

There was not any issues with the Etihad Airways. Staff was excellent and I love the variety of movies and games that they provided.

It was fantastic. The flight from Chicago to Abu Dahbi was fantastic. The crew, food and service were amazing. Everything was handled by the crew member assigned to us , Nicholas, was usually done before we asked for it. Highly recommend Etihad!

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

Information on your arrival and departure airports