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Find cheap flights from London Heathrow Airport to Chiang Mai from £379

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 Chiang Mai departing on 17/9. 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

Search hundreds of travel sites at once for deals on flights to Chiang Mai

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

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Cheap flight deals from Heathrow to Chiang Mai (LHR-CNX)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Heathrow to Chiang Mai 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 and deals for you by selecting your travel dates.
Choose your dates
21:20 - 13:25LHR-CNX
34h 05m1 stop
21:25 - 18:40CNX-LHR
51h 15m2 stops
£552China Eastern
Find Deal
Sun, 16 Jun - Sat, 22 Jun
21:20 - 20:25LHR-CNX
41h 05m2 stops
21:25 - 18:40CNX-LHR
51h 15m2 stops
£558China Eastern
Find Deal
Sun, 16 Jun - Sat, 22 Jun
21:20 - 15:20LHR-CNX
36h 00m2 stops
21:25 - 18:40CNX-LHR
27h 15m2 stops
£582China Eastern
Find Deal
Wed, 5 Jun - Sun, 9 Jun
20:25 - 22:00LHR-CNX
19h 35m1 stop
23:00 - 20:00CNX-LHR
27h 00m1 stop
£602Air China
Find Deal
Mon, 27 May - Sun, 9 Jun
21:50 - 09:20LHR-CNX
29h 30m2 stops
20:00 - 12:45CNX-LHR
22h 45m2 stops
£650Etihad Airways
Find Deal
Mon, 2 Sep - Mon, 16 Sep
22:40 - 21:50LHR-CNX
17h 10m1 stop
23:00 - 17:45CNX-LHR
24h 45m1 stop
£666Air China
Find Deal
Fri, 7 Jun - Fri, 21 Jun
21:50 - 11:15LHR-CNX
31h 25m2 stops
20:00 - 18:45CNX-LHR
28h 45m2 stops
£672Etihad Airways
Find Deal
Thu, 20 Jun - Tue, 16 Jul
06:40 - 08:45LHR-CNX
20h 05m2 stops
21:10 - 07:15CNX-LHR
16h 05m1 stop
£847Thai Airways
Find Deal
Mon, 2 Sep - Mon, 16 Sep
12:30 - 14:50LHR-CNX
20h 20m1 stop
16:55 - 19:10CNX-LHR
32h 15m1 stop
£861Thai Airways
Find Deal
Mon, 1 Jul - Mon, 8 Jul
21:35 - 10:25LHR-CNX
30h 50m2 stops
20:00 - 19:25CNX-LHR
29h 25m1 stop
£893EVA Air
Find Deal
Mon, 27 May - Sun, 9 Jun

Flights from Heathrow to Chiang Mai - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from London Heathrow Airport to Chiang Mai?

The average price of all flights from London Heathrow Airport to Chiang Mai clicked on KAYAK for each day over the last 12 months.
For London Heathrow Airport to Chiang Mai, Sunday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Chiang Mai back to London Heathrow Airport, the best deals are generally found on Saturday, with Monday being the most expensive.

What is the cheapest month to fly from London Heathrow Airport to Chiang Mai?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London Heathrow Airport to Chiang Mai, 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 Chiang Mai is November, where tickets cost £611 on average. On the other hand, the most expensive months are August and July, where the average cost of tickets is £1,236 and £1,191 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London Heathrow Airport to Chiang Mai, 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 on the flight from London Heathrow Airport to Chiang Mai, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 29 days before departure.

Which airlines provide the cheapest flights from London Heathrow Airport to Chiang Mai?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Chiang Mai from London Heathrow Airport were found on China Eastern (£399) and Air China (£430), and the lowest return tickets were found on China Eastern (£552) and Air China (£602).

Good to know - Cheap tickets from London Heathrow Airport to Chiang Mai

Low season

September

High season

January

Cheapest flight

£379
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.
Flight from London Heathrow Airport to Chiang Mai

When to book flights from Heathrow to Chiang Mai

Are your dates flexible? Find out the best times to travel from Heathrow to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 Chiang Mai flights

  • What is the cheapest flight from London Heathrow Airport to Chiang Mai?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Chiang Mai was £475 for a one-way ticket and £693 for a return.

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

    We unfortunately don’t have that data for this specific route.

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

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

  • Which is the best airline for flights from London to Chiang Mai, EVA Air or Thai Airways?

    The two airlines most popular with KAYAK users for flights from London to Chiang Mai are EVA Air and Thai Airways. With an average price for the route of £842 and an overall rating of 8.3, EVA Air is the most popular choice. Thai Airways is also a great choice for the route, with an average price of £953 and an overall rating of 7.9.

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

    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 Chiang Mai.

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

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

    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 Chiang Mai with an airline and back to London Heathrow Airport with another airline.

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

    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 Chiang Mai from 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 5 airlines serving from Heathrow to Chiang Mai

 
See real verified KAYAK customer reviews for airlines flying from London to Chiang Mai. 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 Chiang Mai? 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 1537 reviews
8.2Comfort
8.4Boarding
8.0Entertainment
7.9Food
8.6Crew
Airline reviews

The flight was ok. The person who brings tea and coffee totally forgot about us or just walked past at both meals. And special attention is given if you are Taiwanese

8.0 ExcellentAnonymous, Apr 2024MNL - TPE
Read more about EVA Air reviews

The flight was ok. The person who brings tea and coffee totally forgot about us or just walked past at both meals. And special attention is given if you are Taiwanese

A wonderful new plane. Great menu. Professional service. You and your wife were completely satisfied.

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Eva Air's Business Class is pretty decent. With the given price, I think that the food can be better.

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

Boarding is fast and easy for economy class, food was ok baggage policies are good

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 is one of the top airlines in Asia... but often are over priced. Finally found a reasonable rate.

My original flight was rescheduled & EVA did a good job rescheduling my flight & connecting flight.

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.

We are satisfied with the cabin crew serviceand the quality of meals served.

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!

Check in was a disaster. 90 minutes and only 2 economy check in desks open. Had to rush to catch the flight.

I couldnt go on this flight and lost all my money over 1,000 UK Pounds as my visa to Myanmar was not accepted :(

Thai Airways is one of the best airlines in the business. Looking forward to fly again with them.

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.

1st time with. Etihad Airways and it was amazing from check in to crew. Great flight.

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.

Etihad broke my suitcase Also over charged me for luggage

Entertainment did not work from flight from Abu Dhabi to Kolkata. Emirates has a much better flight in that sector.

1.Aircraft Comfort: The aircraft type was quite small with non-reclining, cramped seats that significantly lacked comfort. 2.In-flight Entertainment: There was no provision of in-flight entertainment screens or Wi-Fi for the majority of the flight. 3.Boarding Process at New Abu Dhabi Airport: Despite the move to a new airport, which promised enhanced experiences, the use of buses instead of jet bridges did not meet expectations, causing inconvenience. 4.Gate Change Communication: A last-minute gate change was poorly communicated, resulting in a long and difficult walk.

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

Crew member took too long time to take back leftover food plates from passenger seats. Food was nice.Easy excellent checking.Guy at checking counter was really kind and helpful.Made our checking very quickly. Leftover food should be taken back ASAP. Because in economy class passanger have narrow space . In the long journey like this, passanger have difficulties to sit with the plates.overall experience was good.

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

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.

The landings were smooth . Being unable to check-in online was terribly stressful and the queue at Haneda exemely long. We paid extra for window seats and did not get them.

Flight was fine, however we were not able to check in online, this adds to travel stress. Luckily check-in at Heathrow was quick, but we did not get the seats we paid extra for. We paid for a window and 2 aisle seats from Shanghai to Tokyo leg, but they changed us to middle seats. Not good :(

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.

It was my birthday while I was on the flight on China eastern airlines. They celebrated my day by giving me a personalized birthday card and also a very delicious pastry. I was surprised and thankful by the China Eastern crew! The whole staff was kind and professional? My second flight into China and the most memorable! 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

Multiple delays, with no explanation. Caused us to almost miss our connector. The airline made no effort when we arrived in Shanghai to help us make it to our next flight with the same airline.

Cons: "Everything was great. Very nice and friendly crew, clean plane, great food. Excellent overall"
Pros: "Friendly crew and helpful staff"
Cons: "Missed connection from PEK to XIY due to delayed arrival and early departure. From XIY to PEK, booked and confirmed 11 departure, changed to 12:30 without notification or explaination. Rushed connections at PEK, pretty much ran from the minute left plan to another terminal, through custom, through all the health check points, security check. Just keep the fights on time and keep the original schedules, not arbitrarily change them."
Pros: "Because of our delay, we flew with Air Thai instead of Air China....much better airline"
Pros: "The price"
Cons: "Staff was not helpful and kind of rude unless you spoke their language. Food options were terrible and not very comfortable seat for 13+ hr flight."
Pros: "The food was good. It was nice that they supply wet hot towels before each meal. The seat was comfortable with the price I paid for. The rest room is nice and clean and quite spacious. The L’occitane toiletery bag was nice."
Cons: "It would be nice to supply mouthwash in the rest room. It would be nice to have a foot step at the bottom to open the trash container. The comforter is not washed and smells."
Cons: "Even for business class there is no TV screen on each seat. Just one small TV screen on the ceiling for a few rows to share. It would be much better with TV screen on each seat. I was sitting in the first row business class and the air hostess skipped me and didn’t give me a slipper. She gave me a used slipper at the end only without a packet. This is unprofessional to treat a business class passenger"
Pros: "The seats on business were comfy, the service excellent, the movie selection was fair to poor, the food was also fair to good largely because they served a heavy lunch rather than a light breakfast."
Cons: "The food and movie selection."
Cons: "More TV show choices and more Hollywood movies although I understand it's a Chinese airline not American."
Pros: "Very frustrated experience. Air China, air Canada, budget air, all push responsibilities away. Budget air got my name wrong, too, which would have caused me to not be able to get on the original flight from China anyways."
Cons: "Still I have not been able to get someone to fix my problem for me although I was promised that I could postpone my return flight by one day because of the delay at Victoria airport. Ended up having to buy a return ticket by myself."
Pros: "The fare was good."
Cons: "More modern equipment. Tv screens. Movies. In flight magazines in English."

Book cheap flights from London to Chiang Mai

Cheapest flights to Chiang Mai from London found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Chiang Mai found on KAYAK in the last 72 hours.
17/9Tue
3 stops
24h 40mLHR-CNX
£379
17/9Tue
2 stops
19h 05mLHR-CNX
£382
12/5Sun
1 stopChina Eastern
34h 05mLHR-CNX
£399
30/5Thu
1 stopChina Eastern
34h 05mLHR-CNX
£400
31/5Fri
1 stopAir China
17h 10mLHR-CNX
£430
15/5Wed
1 stopAir China
19h 35mLHR-CNX
£439
3/9Tue
2 stopsEtihad Airways
29h 30mLHR-CNX
£473
17/5Fri
1 stopThai Airways
36h 50mLHR-CNX
£482
31/5Fri
1 stopThai Airways
17h 05mLHR-CNX
£485
29/6Sat
2 stopsEtihad Airways
29h 30mLHR-CNX
£494

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Last minute flights from Heathrow to Chiang Mai

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 from London to Chiang Mai that are departing in the next 10 days.
7/5Tue
multi-stopGulf Air
22h 50mLHR-CNX
14/5Tue
multi-stopGulf Air
39h 45mCNX-LHR
£734
7/5Tue
multi-stopGulf Air
22h 50mLHR-CNX
14/5Tue
multi-stopGulf Air
26h 45mCNX-LHR
£740
7/5Tue
multi-stopEVA Air
15h 35mLHR-CNX
14/5Tue
multi-stopEVA Air
37h 30mCNX-LHR
£795
7/5Tue
multi-stopEVA Air
15h 35mLHR-CNX
14/5Tue
multi-stopEVA Air
37h 50mCNX-LHR
£901
7/5Tue
multi-stopAsiana Airlines
21h 05mLHR-CNX
13/5Mon
multi-stopAsiana Airlines
24h 05mCNX-LHR
£1,032
7/5Tue
multi-stopAsiana Airlines
30h 05mLHR-CNX
13/5Mon
multi-stopAsiana Airlines
24h 05mCNX-LHR
£1,267
7/5Tue
multi-stop
21h 05mLHR-CNX
13/5Mon
multi-stop
26h 30mCNX-LHR
£1,392
7/5Tue
multi-stop
28h 15mLHR-CNX
13/5Mon
multi-stop
26h 30mCNX-LHR
£2,568

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London Heathrow Airport - Chiang Mai Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Destination:

Chiang Mai (CNX)Thailand

Return flight deals:

Chiang Mai - London Heathrow Airport

Cabin classes:

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