£239 Find Cheap Flights from Thailand to London Heathrow Airport – 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 to Heathrow departing on 2/12. 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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Cheap Flights from Thailand to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Thailand to Heathrow 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 Thailand to Heathrow

Sat, 1 Aug - Tue, 18 Aug
Multiple Airlines Logo
12:20 - 18:20
HKT
-
LHR
36h 00m
1 stop
Multiple Airlines Logo
22:40 - 17:45
LHR
-
HKT
37h 05m
1 stop
£580Multiple Airlines
Mon, 3 Aug - Mon, 31 Aug
Multiple Airlines Logo
12:20 - 07:00
HKT
-
LHR
24h 40m
2 stops
Multiple Airlines Logo
22:40 - 17:45
LHR
-
HKT
37h 05m
1 stop
£590Multiple Airlines
Sat, 1 Aug - Tue, 18 Aug
Multiple Airlines Logo
12:20 - 07:00
HKT
-
LHR
24h 40m
2 stops
Multiple Airlines Logo
22:40 - 17:45
LHR
-
HKT
37h 05m
1 stop
£595Multiple Airlines
Wed, 18 Nov - Mon, 23 Nov
Etihad Airways Logo
02:40 - 12:05
HKT
-
LHR
16h 25m
1 stop
Etihad Airways Logo
13:55 - 23:50
LHR
-
HKT
26h 55m
1 stop
£627Etihad Airways
Mon, 9 Nov - Sat, 14 Nov
Etihad Airways Logo
02:40 - 12:05
HKT
-
LHR
16h 25m
1 stop
Etihad Airways Logo
13:55 - 12:00
LHR
-
HKT
15h 05m
1 stop
£629Etihad Airways
Thu, 20 Aug - Wed, 26 Aug
Air China Logo
23:05 - 17:40
CNX
-
LHR
24h 35m
1 stop
Air China Logo
20:25 - 21:50
LHR
-
CNX
19h 25m
1 stop
£646Air China
Mon, 12 Oct - Sat, 31 Oct
Emirates Logo
23:50 - 14:25
DMK
-
LHR
20h 35m
1 stop
Emirates Logo
09:10 - 10:00
LHR
-
DMK
17h 50m
1 stop
£716Emirates
Tue, 10 Nov - Thu, 19 Nov
Emirates Logo
22:55 - 11:40
DMK
-
LHR
19h 45m
1 stop
Emirates Logo
22:00 - 20:15
LHR
-
DMK
15h 15m
1 stop
£718Emirates
Tue, 15 Sep - Tue, 6 Oct
Gulf Air Logo
15:50 - 06:55
USM
-
LHR
21h 05m
2 stops
Gulf Air Logo
10:00 - 15:10
LHR
-
USM
23h 10m
2 stops
£793Gulf Air
Tue, 15 Sep - Tue, 6 Oct
Gulf Air Logo
15:50 - 06:55
USM
-
LHR
21h 05m
2 stops
Gulf Air Logo
22:05 - 13:45
LHR
-
USM
33h 40m
2 stops
£817Gulf Air
Booking Insights

KAYAK's insights & trends for flights to Heathrow

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

What is the cheapest flight to London Heathrow Airport?

These are the best return prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to London Heathrow Airport was found on the route from Krabi, at £580 return. The most popular connection is from Bangkok to London Heathrow Airport, while KAYAK users have found return deals for as low as £604 in the last 5 days.

What is the cheapest day to fly to London?

The average price of all round-trip flights to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to London is Monday where round-trip tickets can be as cheap as £786. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are £858 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to London Heathrow 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 to London Heathrow Airport is February, where tickets cost £172 on average for return flights. On the other hand, the most expensive months are June and November, where the average cost of tickets from Thailand is £405 and £365 respectively. For one-way flights, the best month to travel is December with an average price of £290.

What is the cheapest time of day to fly to London Heathrow Airport?

The average price for all round-trip flights to London Heathrow Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to London Heathrow Airport is generally in the morning, when round-trip flights cost £803 on average. The most expensive time of day to fly to London Heathrow Airport is generally at night, which is peak travel time and where the average cost of a ticket is £934.

What is a good deal for flights to London Heathrow Airport?

If you’re looking for cheap airfare to London Heathrow Airport, 25% of our users found tickets to London Heathrow Airport for the following prices or less: From Bangkok Suvarnabhumi Airport £815 return.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to London Heathrow 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, you should book around 3 weeks before departure, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

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

Low seasonFebruary
Cheapest flight£239
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.
Flight from Krabi to London

FAQs - booking London Heathrow Airport flights

  • What is the cheapest flight to London Heathrow Airport?

    In the last 5 days, the cheapest flight deal to London Heathrow Airport was found on the route from Krabi, at £580 return. The most popular connection is from Bangkok to London Heathrow Airport, while KAYAK users have found return deals for as low as £604 in the last 5 days.

  • How far is London Heathrow Airport from central London?

    London Heathrow Airport is 14 miles from the centre of London.

  • How much is a flight to London?

    On average, a flight to London costs £639. The cheapest price found on KAYAK in the last 2 weeks cost £146 and departed from Phuket City Airport.

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

    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 to London Heathrow Airport.

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

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

    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 London Heathrow Airport with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to London Heathrow Airport?

    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 London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to London Heathrow Airport

  • Looking for cheap airfare to London Heathrow Airport? 25% of our users found round-trip tickets to London Heathrow Airport for the following prices or less: Cheap flights to London Heathrow Airport from Bangkok Suvarnabhumi £1,122
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

Reviews of the top 5 airlines flying from Thailand to Heathrow

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Thailand to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Heathrow? 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 1491 reviews
8.4Boarding
8.7Crew
8.1Food
8.3Comfort
8.0Entertainment
Airline reviews

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.

6.0 GoodBrandon, Apr 2026
HKT - BKK
Read more EVA Air reviews

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.

Excess baggage fees are outrageous ($250 per bag). Flight crew and planes are nice.

Service in BKK was very good at answering our question about our canceled flight from Taipei to San Francisco. Did like the lead time about the canceled flight from Taipei to San Francisco and was not given the best options.

The flight attendants should be nicer, on my first flight I told them I’d prefer a veggie meal sometimes and then she began to lecture me about it, it was a late flight and I wanted an easy digestion meal so that I can sleep quickly. The meals were abit odd, breakfast on my last flight had eggs, oatmeal and fish, did not taste good at all, strange combination. The economy seats are very tight and crowded, not comfortable at all. Overall for the price I paid I thought I was going to get more.

Clean plane, friendly crew, mostly on-time departure. Negativo since there were no snacks offered. Cold drinks only was fine due to turbulence, but nothing to eat? Really?

Except for crying babies all was ok although the movie selection wasn't the best.

I like Eva Air. I’ve been flying it for several years.. I did notice small changes for the worse by the staff. They’re still way above major carriers based in the USA.

Poor food on board, but seats are too small and uncomfortable

1. The entrance to boarding gate G5 (which is at a lower level) is from the walkway (which is at the upper level). That entrance was locked and there was no place for hundreds of people to sit at the upper level, for a long time as the flight was 45 minutes late. 2. The choice of movies on board was extermely limited and poor. 3. The staff was unhelpful and faked politeness.

The flight went well. Everything good. Boarding. Meal service. Snack (crackers) & Drinks. Entertainment was good as I watch 4 movies. The need to have milk for hot black tea though as coffee creamer just never makes tea taste nice.

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

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.

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

Smooth until we get in the plane it was so small and uncomfortable the whole flight, apparently they have Changed the plane and I don’t know what was the problem this flight is from mct to phuket - on my way back everything was perfect

Although a short regional flight, Oman Air continues to provide excellent service, and personal attention. I always find the Oman Air leg of an international flight less stressful and more personable.

Staff were attentive and professional, and managed to be personable and accomodating at the same time. Oman Air has become my airline of choice.

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

Very bad service and food variety will never come back again

My baby was with me it was really good experience with emirates

Fantastic as ever. Great staff super catering and excellent service.

Flight and entertainment great. Food needs to be improved, only one choice on the menu. Staff worked well throughout.

Crew were excellent and the bar service and chat fantastic. Cheese board delicious. Amenity kit good, very disappointing not getting pyjamas on this leg of the flight and needed to reuse from earlier flight.

Hospitality is good. Should improve on buggage handling because l lost a suitcase. Layover in Dubai was too long , 6 hours

Everything was superb, only bad point was that the fast track on London Heathrow arrivals was not handed out to me and I had to go back to the gate to collect it.

Superb experience. I hope they bring back the fast track option at Heathrow immigration.

I liked theAVML food. Taste was alright and quantity was enough. Sometimes during the flight I felt that the smell from toilet was coming to the cabin

You can improve in many ways First the crew in general is good, but needs to work with passion to their works not like robots Second, collecting the ear headphones long time before landing is strange The crew should deal with the passengers with respect and descent way not like giving orders

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.

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

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.

My case was missing a wheel on arrival Heathrow and the staff were unhelpful when i tried to get some compensation stating it was not sufficient damage, i only wish that they at some point have to deal with the same situation it put me in, maybe they would change their attitude but overall it was a good flight

food poor i said chiken i got pack a pow breakfast lousey .job to explain wot it was ...

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

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

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.

excellent, staff and boarding were all seamless and no issues, thank you!

I was charged $604 for a bag that weighed 17 kg. I was given three different prices until they landed on the most expensive one and didn't budge a penny. It's ironic and a bit enraging because the total cost of my ticket was $468. I've traveled the world and never experienced these kind of prices for only one piece of checked luggage.

The WiFi was not compatible on both my phones (Vivo Y30 5g and Samsung Galaxy A32) with up-to-date android software.

Old plane, old entertainment system. It wasn't working throughout the entire flight. I was offered to connect to their system via Wifi to watch on my phone. Crew wasn't very helpful except one lady who turned the experience around.

Eine Toilette der Business Class war gesperrt und somit nicht benutzbar.

I could not book in online at all which is what I always do to secure a window seat which is my preference.

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