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Find cheap flights from Thailand to London Heathrow Airport from £140

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 13/6. 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
0 bags
Tue 4/6
Tue 11/6

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These are the airlines KAYAK users have selected most often from within our search results for flights to London
These are the airlines KAYAK users have selected most often from within our search results for flights to London
In the last 7 days, travellers have searched 43,369,418 times on KAYAK, and here's why:

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Flights to Heathrow - Travel Insights & Trends

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 day to fly to London?

The average price of all 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 Tuesday where tickets can be as cheap as £795. On the other hand, the most expensive day to fly is Sunday, where prices are £865 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 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 May, where tickets cost £747 on average for one-way flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from Thailand is £886 and £857 respectively. For return trips, the best month to travel is November with an average price of £793.

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

The average price for all 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 evening, when flights cost £670 on average. The most expensive time of day to fly to London Heathrow Airport is generally in the morning, which is peak travel time and where the average cost of a ticket is £839.

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 £359 one-way - £701 return.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 63 days before departure.

Which airline offers the most flights to London Heathrow Airport?

Of the 2 airlines that fly to London Heathrow Airport, British Airways offers the most flights, with around 350 per week, followed by Loganair with 31 flights per week.

How long is the flight to London Heathrow Airport?

The duration of your flight to London depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to London on KAYAK are from Phuket City, which takes 14h 55m, Bangkok, which takes 18h 47m, Koh Samui, which takes 18h 55m, and Chiang Mai, which takes 21h 15m.

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

There are around 55 direct flights from within Thailand to London Heathrow Airport every day. Most flights depart in the morning, with 10:00 the most common departure time and 49% of flights departing in the morning.

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

Each week there are around 381 direct flights from within Thailand to London Heathrow Airport. The most common day for departures is Tuesday, with 16% of flights taking off on this day.

How many long-haul flights are there to London Heathrow Airport each week?

There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to London Heathrow Airport. Instead, there are 28 long-haul flights (6-12 hour flight duration), with the most arriving from Bangkok Suvarnabhumi Airport.

How many cities have direct flights to London Heathrow Airport?

From Thailand, there are direct flights to London Heathrow Airport from 1 city. This city is Bangkok Suvarnabhumi Airport and there are 28 direct flights each week.

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

Low season

January

High season

April

Cheapest flight

£140
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly (6% more expensive on average)
Flight from Bangkok Suvarnabhumi Airport to London Heathrow Airport

FAQs - booking London Heathrow Airport flights

  • 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 £571. The cheapest price found on KAYAK in the last 2 weeks cost £347 and departed from Bangkok Suvarnabhumi 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.

See more FAQs

Top tips for finding cheap flights to London Heathrow Airport

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

Prefer to fly direct to London Heathrow?

Find which airlines fly direct to Heathrow, which days they fly and book direct flights.

Direct departures

Thailand to London Heathrow

Monday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Tuesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Wednesday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

Thursday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights

Direct returns

London Heathrow to Thailand

Monday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Tuesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Wednesday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

Thursday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights
See more direct flights

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.
8.3
EVA AirOverall score based on 1542 reviews
8.6Crew
8.0Entertainment
8.0Food
8.4Boarding
8.2Comfort
Airline reviews

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

8.0 ExcellentPaul, Feb 2024BKK - TPE
Read more about EVA Air reviews

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.

They didn’t have ice for the drinks and only gave you half a cup of your beverage. Did not have enough water. I got dehydrated

Fast boarding process. Flight was expected for a long haul economy flight

Overall the flight was what might be expected for a long haul flight to Asia in economy class. The cabin crew was attentive and the food was good. Boarding was fairly fast and easy. The one thing I found frustrating was the EVA app. It is terrible. Trying to do anything on it was almost impossible.

Poor services. Not meet 5-star airline standard. Disappointed with the poor food and drink selections. Cabin crew is not attentive at all. They even skipped me during meal service (not sure if it is intentionally).

The flight went well. Everything good. Boarding. Meal service. Snack (crackers) & Drinks. (Could do with more selection like a sandwich). The seats did not have the annoying footrests (that dig into your shins when you stretch out your legs.). Entertainment was good as I watch 4 movies. Screens were bight (adjustable) but could do with privacy filters on them to prevent light from the passenger next to you shining in your face. They need to have milk for hot black tea though as coffee creamer just never makes tea taste nice.

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.

EVA would not help with ticket issue since they were purchased through a travel agency. Even though it was EVA ticket stock. Travel agency Budget Air didn't reissue ticket after airline change which I didn’t learn until trying to checkin on Christmas Day and there was no contact number for the agency to help. I will never use Budget Air to purchase flight again and disappointed in EVA’s refusal to help. Thankfully just under 12 hrs before departure someone from the agency was available to reissue tickets. I was starting to think we would not be flying and the stress trying to resolve was completely unacceptable.

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

Extra seat belt across the chest 10 minutes before taking off and 15 minutes before landing seemed excessively safe.

The transfer from Domestic and International was a bit confusing but I am easily confused. I did not eat any food, but the food on the other leg was decent. It was nice they turned the lights off on the night flight. The plane was in good shape, but was a little cramped in economy and I am small. They gave me a customs form to fill out and nobody looked at it as I went through customs. Not a bad flight.

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

The aircraft was really old, the staff demotivated and the overall United airline service is horrible

Lunch Food was tasteful and had variety. Seat was comfortable. However, when I was reserving my seats during booking, the seat configuration showed was 3-3-3, but when I boarded it was a 2-4-2 configuration? Also during booking, I had also bought travel insurance together with my TG booking. However there was no confirmation of my purchase from Allianz and TG. After several emails with TG contact, sales, reservation and Allianz was i able to confirm my insurance purchase. When the policy was issued, the birth dates of me and my wife were wrongly stated and I had to go through another round of emails with Allianz to get it corrected. Otherwise any claims would be void! It was indeed not a very good booking experience!

Increase the number of available films, including variety. All other aspects were great.

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

After going back and forth with the airline, they never reimbursed the airline tickets. Went around asking multiple people how to get reimbursed and kept getting put back, not satisfied with their customer service.

No working jet bridge to deplane, with priority customers deplaning last. Followed by bus to terminal.

Efficient like all the other flights with them. An outstanding budget airline!

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

More facilities to transport to the gates......felt too much walking distance

Not good. Expected a lot more as far as excellence.

It was a really long flight from Doha to Philadelphia and it was overall a good one. The one area that I would comment on is that there is a lot of single-use plastic and disposables in the meal service for American Airlines. It would be great to see more circular options in the meal service to reduce the amount of waste.

Not impressed. Only allowed one carry on on such a long flight.

Fantastic, the 787-9 is a very beautifully designed plane and it was a pleasure to fly in the Qsuite. The suite did feel slightly smaller than the 777 variant, and the suite door also felt smaller, as I felt more exposed as passengers and crew walked past. Food was too notch, and the service was fantastic. I wish they’d enforce boarding zones more effectively, but otherwise they did really well.

I had already opted for Vegan food before 2 months yet they say we have no record for it,

I didn't understand why I got dropped off at departures on exiting the plane at Doha aiport. I had to find my own way to immigration/baggage reclaim which wasn't easy as staff in the departure section just tell you ti scan your boarding pass. This was very poor b qatar Airways. I spent 2 hours soyung this out and once I got to get my suitcase it was delayed. So instead of getting to the hotel at about midnight I got there at three in the morning. I wonder why I upgraded to business?

From home to the airport, you must mention the terminal ready.

Good range of movies but lacking decent tv shows. Wifi was really expensive on this flight, considering flights under 7 hours have a $9.99 USD charge for streaming, to jump up to $24.99 for a 7 hour 40 flight seemed a little bit of a rip off. Staff are inattentive, and really need to improve on the customer experience. The new airport is fantastic, as is the new lounge, a huge upgrade from the old airport and lounge!

Good range of movies but lacking decent tv shows. Wifi was really expensive on this flight, considering flights under 7 hours have a $9.99 USD charge for streaming, to jump up to $24.99 for a 7 hour 40 flight seemed a little bit of a rip off. Staff are inattentive, and really need to improve on the customer experience.

In my opinion, Etihad Airways is a first rate airline except for one important element. On the day before my return flights, when I chose my seats on the Etihad website I was charged an additional $55 (US) in order to sit on the aisle. I was not at all happy about this additional "hidden" charge and I felt cheated.

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

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

One thing is very important is you people not giving seat arrangement together to couple, senior citizen. You have to take care of senior citizen. Do not look about money. Money is not important everywhere. Make relationship strong is very very important. I like Etiyad air line out of all air line. Food was hot and delicious. Air hostess gave very good service, nice attitude, very good behaviour. I gave 10 out of 10 marks. Thanks Jivraj

Etihad broke my suitcase Also over charged me for luggage

Very unfriendly team. It was very difficult to get a cup of coffee. Legroom was extremely small. Old, dilapidated plane.

Ripped off and broken seats in Business class. Seats stink and need to request the staff for additional bedsheets. Crew if very friendly though

Crew was good, boarding mediocre, food choices were limited, seating was not comfortable

For the price we paid, we had a really good flight. The seats and bed (business class) was extremely comfortable. I have no complaints. The crew were very attentive and helpful. They spoke English and there were no misunderstanding although their English wasn’t perfect or fluent. You will never go hungry as there was ample food and drinks but their food for mediocre. The entertainment was limited to older movies and the wifi didn’t allow you to access some Social media. Apart from the above, it was a very pleasant flight. Would highly recommend them.

Good airline for the price. The Air stewardess are great, nothing is to much trouble. Will use again.

Cheapest option from Gatwick £400 cheaper than Emirates and Qatar. Entertainment no where near as good as Emirates and Qatar, but saved £400 so all good.

Great staff and food. Seats pretty uncomfortable but plenty of legroom. Entertainment system outdated.

The flight was cancelled without any reason. But the next flight to Shanghai has to be cancelled to pay penalty.

Gatwick London-Shanghai -Bangkok.. Would have liked entertainment screens, but I know these planes are not that new. Cheap flights at the time of booking, Emirates wanted double so you get what you paid for. I would fly again with them, but if Emirates was the same price I would go with them.

We were cutting it close on our connecting flight and notified all staff at departing gate and flight attendants. From the start, we were told to check in with the international transfer desk by everyone, except for one lady who wanted to argue the time difference that was already taken into account. We also asked if we could try to exit the plane first (our family of 4 and 8 others on the same connecting flight). They just told us to check in with international transfers. We landed and had very little time to make our next flight. We were not offered any assistance or communication to the receiving gate. We ran all the way to the international transfers gate only to be turned away. I think we could have made it if we were allowed to exit and a call was made to other check in counter. After that we spent 6 grueling hours with our kids trying to rebook a flight. No food of any type of compensation was offered besides a dirty hotel room. The ladies with China Eastern at the Shanghai International counter were rude an unhelpful. We were directed to 3 different counters and waited before they said they forgot about a hotel. It was a long, miserable day. I believe this could have all been avoided.

You’re in the three parts of my life, the China Eastern air crew remembered and wish me happy birthday. I was given pastries on two different occasions and a complementary drink. The stew is wish me happy birthday and gave me a birthday card. Everything was first class. Thank you.

Again, I was presented with birthday pastries two times as a celebrated my birthday on both legs of my trip. I will keep flying to China using China Eastern airlines. As they made this trip a special one thank you.

Couldn’t fly since they wouldn’t issue a boarding ticket. Something to do with not taking the departing flight since it was cancelled due to weather. No notice or anything about the trip being invalid. The app made it seem like I was all good for it. Never trusting travel agency

Book cheap flights from Thailand to London

Recent return flight deals

 
These are the cheapest return flights to London found on KAYAK in the last 72 hours.
14/5Tue
1 stop
24h 45mBKK-LHR
28/5Tue
1 stop
27h 35mLHR-BKK
£483
24/5Fri
1 stop
28h 10mBKK-LHR
4/6Tue
1 stop
28h 20mLHR-BKK
£503
24/5Fri
1 stopChina Southern
35h 25mBKK-LHR
4/6Tue
1 stopChina Southern
30h 10mLHR-BKK
£507
12/6Wed
1 stopChina Eastern
29h 30mBKK-LHR
13/6Thu
2 stopsChina Eastern
23h 55mLHR-BKK
£541
4/6Tue
1 stopChina Eastern
31h 50mBKK-LHR
11/6Tue
1 stopChina Eastern
17h 35mLHR-BKK
£553
3/9Tue
1 stopThai Airways
15h 45mCNX-LHR
15/9Sun
1 stopThai Airways
14h 15mLHR-CNX
£858
26/5Sun
2 stopsQatar Airways
18h 55mUSM-LHR
29/5Wed
2 stopsQatar Airways
20h 55mLHR-USM
£873
31/10Thu
1 stopQatar Airways
19h 45mHKT-LHR
15/11Fri
1 stopQatar Airways
17h 15mLHR-HKT
£924
26/5Sun
1 stopEVA Air
27h 55mUSM-LHR
29/5Wed
1 stopEVA Air
14h 55mLHR-USM
£948
26/5Sun
1 stopThai Airways
18h 20mCEI-LHR
30/5Thu
1 stopThai Airways
15h 25mLHR-CEI
£1,130

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to London found on KAYAK in the last 72 hours.
13/6Thu
1 stop
31h 45mBKK-LHR
£140
13/6Thu
1 stop
31h 45mBKK-LHR
£148
24/5Fri
1 stopChina Eastern
22h 30mBKK-LHR
£311
29/5Wed
1 stopQatar Airways
17h 40mBKK-LHR
£339
22/5Wed
1 stopQatar Airways
18h 55mBKK-LHR
£348
9/5Thu
directEVA Air
12h 55mBKK-LHR
£362
13/5Mon
directEVA Air
12h 55mBKK-LHR
£366
28/5Tue
directThai Airways
12h 20mBKK-LHR
£367
9/6Sun
directThai Airways
12h 20mBKK-LHR
£371
10/5Fri
2 stopsChina Eastern
27h 25mBKK-LHR
£376

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Last minute flights to Heathrow

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to London that are departing in the next 10 days.
10/5Fri
multi-stopChina Southern
35h 25mBKK-LHR
14/5Tue
multi-stopChina Southern
30h 10mLHR-BKK
£471
7/5Tue
multi-stopChina Southern
22h 10mBKK-LHR
29/5Wed
multi-stopChina Southern
32h 40mLHR-BKK
£500
6/5Mon
multi-stopChina Eastern
22h 30mBKK-LHR
14/5Tue
multi-stopChina Eastern
24h 45mLHR-BKK
£516
6/5Mon
multi-stopChina Eastern
36h 50mBKK-LHR
9/5Thu
multi-stopChina Eastern
21h 20mLHR-BKK
£518
6/5Mon
multi-stopChina Eastern
36h 50mBKK-LHR
10/5Fri
multi-stopChina Eastern
17h 35mLHR-BKK
£532
9/5Thu
directEVA Air
12h 55mBKK-LHR
13/5Mon
directEVA Air
11h 55mLHR-BKK
£726
9/5Thu
directEVA Air
12h 55mBKK-LHR
22/5Wed
directEVA Air
11h 55mLHR-BKK
£736
5/5Sun
multi-stopQatar Airways
20h 45mHKT-LHR
6/5Mon
multi-stopQatar Airways
17h 25mLHR-HKT
£775
6/5Mon
directThai Airways
12h 20mBKK-LHR
14/5Tue
directThai Airways
11h 35mLHR-BKK
£808
8/5Wed
directThai Airways
12h 20mBKK-LHR
12/5Sun
directThai Airways
11h 35mLHR-BKK
£822

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