£143 Find Cheap Flights from Thailand to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 13/12. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
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
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Everything you should know

Cheapest return fare
£415
China Eastern
Thu 4/12Tue 13/1
CNX - LGW • 2 stops
Cheapest direct flights
£514
Norse Atlantic UK
Wed 11/3Sun 15/3
BKK - LGW • Direct
Top airlines
Thai Airways
Most flights • 14 per week
EVA Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
CNX-LON
Cheapest
BKK-LON
Most popular
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 8% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Thailand to London

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

Thu, 4 Dec - Tue, 13 Jan
China Eastern Logo
10:05 - 14:00CNX-LGW
34h 55m2 stops
China Eastern Logo
10:30 - 15:25LGW-CNX
21h 55m2 stops
£415China Eastern
Find Deal
Fri, 5 Dec - Tue, 13 Jan
China Eastern Logo
16:25 - 14:00CNX-LGW
28h 35m2 stops
China Eastern Logo
10:30 - 15:25LGW-CNX
21h 55m2 stops
£431China Eastern
Find Deal
Fri, 5 Dec - Tue, 13 Jan
China Eastern Logo
10:05 - 14:00CNX-LGW
34h 55m3 stops
China Eastern Logo
10:30 - 15:25LGW-CNX
21h 55m2 stops
£441China Eastern
Find Deal
Thu, 4 Dec - Thu, 29 Jan
China Southern Logo
12:45 - 18:35BKK-LHR
36h 50m2 stops
China Southern Logo
22:00 - 14:30LHR-BKK
33h 30m1 stop
£514China Southern
Find Deal
Wed, 21 Jan - Wed, 4 Feb
China Southern Logo
18:05 - 18:35BKK-LHR
31h 30m1 stop
China Southern Logo
22:00 - 22:30LHR-BKK
17h 30m1 stop
£519China Southern
Find Deal
Mon, 1 Dec - Thu, 4 Dec
Air China Logo
22:35 - 15:55HKT-LHR
24h 20m1 stop
Air China Logo
21:35 - 12:50LHR-HKT
32h 15m1 stop
£592Air China
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Cathay Pacific Logo
12:20 - 15:00HKT-LHR
33h 40m1 stop
Cathay Pacific Logo
17:50 - 11:20LHR-HKT
34h 30m1 stop
£627Cathay Pacific
Find Deal
Sat, 13 Dec - Mon, 29 Dec
Cathay Pacific Logo
12:20 - 06:30HKT-LHR
25h 10m1 stop
Cathay Pacific Logo
22:05 - 11:20LHR-HKT
30h 15m1 stop
£647Cathay Pacific
Find Deal
Thu, 22 Jan - Thu, 29 Jan
SWISS Logo
13:15 - 08:45BKK-LCY
26h 30m1 stop
SWISS Logo
13:30 - 08:25LCY-BKK
35h 55m2 stops
£710SWISS
Find Deal
Thu, 22 Jan - Thu, 29 Jan
SWISS Logo
13:15 - 08:45BKK-LCY
26h 30m1 stop
SWISS Logo
13:30 - 10:45LCY-BKK
14h 15m1 stop
£725SWISS
Find Deal
Booking Insights

KAYAK's insights & trends for flights to London

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

What is the cheapest flight to London?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

The cheapest airline ticket to London from the Thailand in the last 72 hours was £143 one-way, and £415 round-trip on the route from Chiang Mai to London. The most popular route is from Bangkok to London and the cheapest ticket found on this route in the last 72 hours was £512 return.

What is the cheapest month to fly to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to London, 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 is November, where tickets cost £656 on average for one-way flights. On the other hand, the most expensive months are January and August, where the average cost of tickets from Thailand is £787 and £764 respectively. For return trips, the best month to travel is November with an average price of £656.

What is a good deal for flights to London?

If you’re looking for cheap airfare to London, 25% of our users found tickets to London for the following prices or less: From Bangkok Suvarnabhumi Airport £266 one-way - £452 return.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to London, 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 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 56 days before departure.

Which is the cheapest airport to fly into in London?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in London is London Stansted Airport, with an average flight price of £87.

Good to know - Cheap tickets from Thailand to London

Low seasonJanuary
Cheapest flight£143
Best time to beat the crowds but there is an average 20% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Chiang Mai to London Heathrow Airport

FAQs - booking London flights

  • What is the cheapest flight to London?

    The cheapest airline ticket to London from the Thailand in the last 72 hours was £143 one-way, and £415 round-trip on the route from Chiang Mai to London. The most popular route is from Bangkok to London and the cheapest ticket found on this route in the last 72 hours was £512 return.

  • Which London airport is closest to central London?

    8 miles away from London’s city centre, London City is the closest of the 6 major airports in the city. There are 14 miles separating London city centre to London Heathrow Airport, 24 miles to London Gatwick Airport, and 28 miles to London Luton Airport.

  • How much is a flight to London?

    On average, a flight to London costs £429. The cheapest price found on KAYAK in the last 2 weeks cost £97 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 tickets can be as cheap as £636. On the other hand, the most expensive day to fly is Friday, where prices are £743 on average.

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

    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.

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

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

    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 London 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?

    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 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?

    The cheapest time of day to fly to London is generally in the evening, when flights cost £549 on average. The most expensive time of day to fly to London is generally at night, which is peak travel time and where the average cost of a ticket is £824.

Top tips for finding cheap flights to London

  • Looking for a cheap flight from Thailand to London? 25% of our users found flights on this route for £266 or less one-way and £452 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Reviews of the top 5 airlines flying from Thailand to London

 
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 London? 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 1280 reviews
8.4Boarding
8.0Entertainment
8.6Crew
8.3Comfort
8.1Food
Airline reviews

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

8.0 ExcellentAnonymous, Oct 2025ICN - TPE
Read more EVA Air reviews

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

The crew very accommodating and food too is good. Keep up the good work

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.

Staff show very stress with delayed flight more than passenger.

Very good service and food. Crew was professional and helpful. Cabin and restrooms were kept clean

First time traveling with EVA.. great experience in economy class... Personnel very friendly..

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

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.

Very smooth flight. Superb crew, great food and service. Slept most of the way. Excellent airline.

Bathrooms were amazing and first class seat was very comfortable. Food was edible but not up to the standards of other first class meals on other airlines. But Caviar was amazing! So much caviar. Dom Perignon 2015 was room temperature. It would have been amazing if it was chilled down a bit more. Slippers were amazing and amenity kit requested was beautiful. Requested Pajamas never came so can’t tell you how nice they were. Loved the design of the seat and personal storage. Suite was much smaller than other airline’s first class and tv screen was tiny and remote difficult to use. I probably wouldn’t pay for this flight again.

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.

No kids provided. Instead we were told to have contacted the airline that we have kids and require kids meals. We were not the only ones who inquired about kids meals. It’s odd. Emirates and other airlines give kids meals as standard and before the adult food comes out. The rice in our meals was gluggy and under cooked. The chicken was also raw. Sadly not the best experience with Finn Air. The hostesses tried to compensate with the snacks and drinks but missed the mark by a long way. Especially when paying Emirates/Qantas prices

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

Can’t complain Only downside was the Kiosk passport check and customs clearance at Melbourne. When will they improve that service🤔

We travelled in economy, were very satisfied with the comfort and keg space of the seats. Food was great compared to other airlines, the crew were very helpful and friendly. Since i was travelling with kids, i needed assistance multiple of times. Will be definitely taking long flights with Emirates from now on.

Very pleasant.The crews are very nice.Food were excellent.

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

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

The plane seemed pretty old and the food was not good

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😉

The flight was mostly fine, but I really wished that seats had an outlet to charge devices considering the length of the flight (15 hours there and 14 hours back).

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.

Very efficient and professional staff. Food was good and so was entertainment selection.

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

As good as you can expect an economy flight from Europe to Australia to be. Nothing agains Qatar, just feels like every new generation of plane gets tighter.

Boarding from DOH to SYD the Business Class were pointed in a separate gate but no one there to receive us. Otherwise it was ok.

The flight was delayed and one member of the crew was a bit rude. But apart from that all good.

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.

My flight was with American Airlines 120. The flight was delayed 3 hours and I missed my connection. When I arrived in Doha, the AA staff told me to call an 800 number to rebook a different flight, which was unacceptable. Eventually a Qatar Air staff member helped rebook me on a flight to Manila, that was 12 hours later. They offered me a hotel and meal voucher which I declined, because I didn’t want to leave the airport. Long story short, I spent 12 hours in the Doha airport waiting for my next flight.

I felt that when I was rerouted it should have been to business class.

I’ve flown with Qatar multiple times and the service has always been great. Very professional, organized, the food is delicious and plentiful, tons of entertainment.

Small plane with only two lavatories at the back. You must have a good plan to use it before or after the meal, if you make a bad decision, you will end up with standing in front of the toilet for a while till the food carts empty. The good thing is even there’s a slightly delayed, the plane is still arriving on time which is superb!!

The only personel that smiled at all were the flights attendants. Desk agents, lounge people none of them had a smile or even a hello. They were like dealing with dead fish. Again flight attendants were good. All other personnel looked like they didn’t want to be there or help.

good flight. food is only so so. I actually did not eat the snack. it does not look too good on the passenger next to me.

Food no variations only beef of chicken no veggie meals

Super surprised with the entire experience. Business class is incredible. Flight attendants around the world could learn customer service from these people. Simply fabulous experience all the way around.

Pillow and blanket are dirty. My son got multiple bites during the flight

Flight was on time. My group paid for seat’s so that us four can be seated next to each other. We all got separated. We all got middle seats, which made it more difficult to be able to get up and stretch or use the restroom. We tried talking to the employees at China Eastern and they were of no help. We will not be taking this flight or recommend this route to others in the future. Also I will be contacting customer service on how I can get our money back for paying for assigned seats.

China eastern was fantastic. I had read so many bad reviews that had made me nervous. However, I found that the flight attendant’s, and customer service check in etc. etc. was excellent. I had no problems. I would fly with them again!

Excellent! I had read some negative reviews but I found out that it was not all was not true! The staff was courteous and helpful. The flight take off and landing was nice & easy. The food was good! I asked for a second and I got it easily and without an attitude! All was wonderful!

Excellent experience however older aeroplanes used by China Eastern Airlines.

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Everything you need to know for your flight to London

Cabin class types available on flights to London

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.