£149 Find Cheap Flights from Thailand to London Heathrow Airport

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 14/7. 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

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These are the airlines KAYAK users have selected most often from within our search results for flights to London
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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

Mon, 20 Oct - Fri, 24 Oct
 Logo
17:15 - 05:55BKK-LHR
18h 40m1 stop
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22:00 - 10:05LHR-BKK
30h 05m2 stops
Sun, 19 Oct - Fri, 24 Oct
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02:10 - 18:40BKK-LHR
22h 30m1 stop
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22:00 - 10:05LHR-BKK
30h 05m2 stops
Fri, 3 Oct - Fri, 10 Oct
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19:40 - 16:35BKK-LHR
26h 55m1 stop
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22:00 - 10:00LHR-BKK
30h 00m2 stops
Mon, 30 Jun - Wed, 20 Aug
Etihad Airways Logo
02:55 - 15:15BKK-LHR
18h 20m1 stop
Etihad Airways Logo
20:55 - 23:55LHR-BKK
21h 00m1 stop
£553Etihad Airways
Find Deal
Wed, 25 Jun - Thu, 3 Jul
Etihad Airways Logo
02:55 - 07:00BKK-LHR
34h 05m1 stop
Etihad Airways Logo
09:30 - 23:55LHR-BKK
32h 25m1 stop
£587Etihad Airways
Find Deal
Fri, 25 Jul - Fri, 1 Aug
Qatar Airways Logo
09:20 - 13:20HKT-LHR
34h 00m1 stop
Qatar Airways Logo
17:00 - 18:50LHR-HKT
19h 50m1 stop
£781Qatar Airways
Find Deal
Thu, 4 Sep - Thu, 18 Sep
Thai Airways Logo
15:30 - 07:15CNX-LHR
21h 45m1 stop
Thai Airways Logo
12:30 - 08:45LHR-CNX
14h 15m1 stop
£849Thai Airways
Find Deal
Tue, 9 Sep - Sun, 21 Dec
Qatar Airways Logo
20:25 - 14:05HKT-LHR
23h 40m1 stop
Qatar Airways Logo
19:20 - 18:55LHR-HKT
16h 35m1 stop
£865Qatar Airways
Find Deal
Mon, 23 Jun - Tue, 2 Dec
EVA Air Logo
20:00 - 19:20CNX-LHR
29h 20m1 stop
EVA Air Logo
21:20 - 18:55LHR-CNX
14h 35m1 stop
£898EVA Air
Find Deal
Sat, 2 Aug - Sat, 16 Aug
EVA Air Logo
08:45 - 19:20USM-LHR
16h 35m1 stop
EVA Air Logo
21:35 - 20:50LHR-USM
17h 15m1 stop
£1,074EVA Air
Find Deal
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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 round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to London Heathrow Airport was found on the route from Bangkok, at £360 return. The most popular connection is from Bangkok to London Heathrow Airport and KAYAK users have found return deals for as low as £489 in the last 3 days.

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 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 March, where tickets cost £702 on average for return flights. On the other hand, the most expensive months are December and April, where the average cost of tickets from Thailand is £808 and £806 respectively. For one-way flights, the best month to travel is March with an average price of £702.

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 £724 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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

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

Low seasonFebruary
High seasonDecember
Cheapest flight£149
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.
Flight from Bangkok Don Mueang Intl to London

FAQs - booking London Heathrow Airport flights

  • What is the cheapest flight to London Heathrow Airport?

    In the last 3 days, the cheapest flight deal to London Heathrow Airport was found on the route from Bangkok, at £360 return. The most popular connection is from Bangkok to London Heathrow Airport and KAYAK users have found return deals for as low as £489 in the last 3 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 £563. The cheapest price found on KAYAK in the last 2 weeks cost £285 and departed from Bangkok Suvarnabhumi Airport.

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Thursday where round-trip tickets can be as cheap as £654. On the other hand, the most expensive day to fly is Monday, where round-trip prices are £785 on average.

  • 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.

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

    The cheapest time of day to fly to London Heathrow Airport is generally in the evening, when round-trip flights cost £843 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 £1,086.

  • How many direct flights to London Heathrow Airport are there each week?

    Each week there are around 351 direct flights from within Thailand to London Heathrow Airport. The most common day for departures is Friday, with 16% of flights taking off on this day.

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 £1,024
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

Top 5 airlines serving 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.
8.4
EVA AirOverall score based on 1202 reviews
8.0Entertainment
8.4Boarding
8.3Comfort
8.1Food
8.6Crew
Airline reviews

The food from Los Angeles to Taipei made me throw up. The flight is also not comfort. But the staffs are very friendly and nice.

8.0 ExcellentAnonymous, Jun 2025LAX - TPE
Read more EVA Air reviews

The food from Los Angeles to Taipei made me throw up. The flight is also not comfort. But the staffs are very friendly and nice.

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

Everything is good staff is polite and helpful flights are on time sub sandwhich for a snack was good with a bottle of water only thing maybe more variety of food like breakfast or dinner depends on the time

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.

seats are pitched well. you don't feel too tight.

Great but I am not sure why I was placed in zone 4 for boarding despite being an Infinity Member??? Can you explain online. Thanks

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?

The food is quite mediocre. I had spaghetti and the tomato based sauce was quite salty and there were no other flavors, no spices used in the sauce.

basic and only minimum of service, they offer nothing special

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

Very pleasant.The crews are very helpful.Food are very good.

They should resume the fast track for business / first class passengers

Emirates is superb service. The A380 was very comfortable. The cabin crew is really helpful

Boarding for business class passengers can be improved. Also, when debarking the aircraft, Economy passengers are let off first due the way the configuration of the cabin upstairs.

The boarding process was smooth and the stewardesses were nice. Some delays with drinks at the end of the flight, but no issues.

The plane seemed pretty old and the food was not good

The service on board was excellent, the flight wasn’t overbooked and we departed and arrived on time.

Ticket price is competitive, flight time is punctual, aircraft cabin is clean, food is average. Can improve on serving system of meals on a A380 airbus. I had only 15 min to eat my meal. There are lots of people to serve & took a while for food to make it down to my row.

Emirates is always a pleasure to travel on. From the spectacular First and Business Class configurations of your big A380 and 777, to the Bar Lounge to, of course, your impecable on board flight attendance and their iconic uniform, now also even available for young girls. All the destinations that Emirates offers makes it an airline of choice many a time.

The entire crew was amazing. They went out of their way to make us enjoy a great travel experience.

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

Terrible. It’s like they are stuck in the dark ages. I brought a standard carry on suitcase and a back pack - I was told I could only carry on 7kg per bag - in business class, I was forced to remove articles from the suitcase and put them into my backpack! That’s the most ridiculous thing I’ve ever encountered in all my years of flying. The two bags weighed the same amount but one could not be more than 7kg. Holy cow.

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.

This trip was the most comfortable one I have ever experienced, the team was excellent and very helpful. I am so glad I picked Qatar Airways.

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 space was tight, hardly any leg room and the crew surprisingly were busy and did not take the time to attend to passengers, felt rushed. There was a delay for check in since the systems were down the airport staffs were accommodating

Wasn’t allowed to continue with the purchased tickets because I hadn’t been able to go on the first scheduled leg.

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.

My carry on bag was taken by Alaska Air as we boarded in LAX! She said there was not room. There was plenty of room. I told her that my meds and personal items were in it. She did not care. She said it would be sent to my final destination, Nairobi. Well it got to Nairobi the day I was to fly home. The handle of my bag was crushed so could not retract. So I had to remove it. I had to buy converters, malaria medication. personal items. I filled out the missing form at the Nairobi airport. I asked that it be shipped to the Kisumu airport. When it was obviously not going to make it for my time in Kenya. I asked that it be sent to John Wayne Airport. NONE of that happened. I only knew it was at Nairobi because my air tag indicated it was finally in Nairobi the day I was leaving Kenya! Now I need to purchase a new carry on bag!!!

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.

Good staff, good intent, decent entertainment. More seat space would always be of benefit

I had first class service from them. A little late taking off, but no major problem

Operated by American Airlines. Very chaotic and the crew was bit rough responding any enquiries. Restricted leg space.. Qatar would have been better

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.

Horrible. After paying for seats, I was cramped, my daughters legs kept hitting the seat in front, I had no overhead bin space and no help from stewards on board, the food was served cold, when asked for snacks was told to wait and never received any, the flight was cold with no temperature controls. Entertainment was outdated. I booked this through partnership with American Airlines but will avoid in the future.

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

Should have had business class line in immigration. Food quality suboptimal

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!

Likes: on time departure, new plane Didn’t like:very poor quality food, very limited entertainment.no amenity kit etc.

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.

Only 1 time food and drinks together was offered, for total 5 hours duration drinks and snacks was never offered. For some people food choice was not available, only veg was available. No entertainment option was there. Crew members were mostly back of the flight asking each other for KitKat and chips to share between them.

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Everything you need to know for your flight to Heathrow

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