CNX - LHR

£262 Find Cheap Flights from Chiang Mai 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 from Chiang Mai to Heathrow departing on 16/8. 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

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Everything you should know

Cheapest return fare
£562
Etihad Airways, Air China
Fri 11/9Fri 18/9
CNX - LHR • 2 stops
Cheapest one-way flight
£262
Overall average: £649
Multiple Airlines
Sun 16/8
CNX - LHR • 2 stops
Top airlines
Cheapest • from £636 (return)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Chiang Mai and Heathrow. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £545 (return)
Shortest trip • 15h 30m (one-way)
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Flight Deals

Cheap Flights from Chiang Mai to Heathrow (CNX-LHR)

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

Fri, 11 Sep - Fri, 18 Sep
Multiple Airlines Logo
10:10 - 15:05CNX  Chiang Mai-LHR London Heathrow
34h 55m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Multiple Airlines Logo
22:40 - 21:50LHR  London Heathrow-CNX Chiang Mai
17h 10m1 stop Beijing Capital
£562Multiple Airlines
Fri, 11 Sep - Fri, 18 Sep
Multiple Airlines Logo
10:10 - 15:05CNX  Chiang Mai-LHR London Heathrow
34h 55m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Multiple Airlines Logo
22:40 - 21:50LHR  London Heathrow-CNX Chiang Mai
17h 10m1 stop Beijing Capital
£575Multiple Airlines
Fri, 11 Sep - Fri, 18 Sep
Multiple Airlines Logo
10:10 - 15:05CNX  Chiang Mai-LHR London Heathrow
34h 55m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Multiple Airlines Logo
21:20 - 09:15LHR  London Heathrow-CNX Chiang Mai
29h 55m2 stops Shanghai Pu Dong Kunming Changshui
£597Multiple Airlines
Fri, 11 Sep - Fri, 18 Sep
Multiple Airlines Logo
10:10 - 15:05CNX  Chiang Mai-LHR London Heathrow
34h 55m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Multiple Airlines Logo
21:20 - 09:15LHR  London Heathrow-CNX Chiang Mai
29h 55m3 stops Shanghai Pu Dong Ji'an Ji An/Jing Gang Shan Kunming Changshui
£597Multiple Airlines
Thu, 3 Sep - Wed, 9 Sep
Air China Logo
23:05 - 17:40CNX  Chiang Mai-LHR London Heathrow
24h 35m1 stop Beijing Capital
Air China Logo
20:25 - 21:50LHR  London Heathrow-CNX Chiang Mai
19h 25m1 stop Beijing Capital
£636Air China
Sat, 3 Oct - Mon, 19 Oct
Air China Logo
23:05 - 20:25CNX  Chiang Mai-LHR London Heathrow
27h 20m1 stop Beijing Capital
Air China Logo
22:40 - 21:50LHR  London Heathrow-CNX Chiang Mai
17h 10m1 stop Beijing Capital
£663Air China
Fri, 11 Sep - Fri, 18 Sep
Etihad Airways Logo
10:10 - 15:05CNX  Chiang Mai-LHR London Heathrow
34h 55m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Etihad Airways Logo
14:45 - 19:10LHR  London Heathrow-CNX Chiang Mai
22h 25m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
£676Etihad Airways
Wed, 14 Oct - Wed, 28 Oct
Etihad Airways Logo
11:55 - 07:00CNX  Chiang Mai-LHR London Heathrow
25h 05m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Etihad Airways Logo
08:50 - 09:25LHR  London Heathrow-CNX Chiang Mai
17h 35m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
£702Etihad Airways
Thu, 17 Sep - Sat, 19 Sep
Etihad Airways Logo
11:55 - 12:45CNX  Chiang Mai-LHR London Heathrow
30h 50m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Etihad Airways Logo
09:30 - 11:15LHR  London Heathrow-CNX Chiang Mai
19h 45m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
£739Etihad Airways
Tue, 25 Aug - Mon, 14 Sep
Air China Logo
23:05 - 20:25CNX  Chiang Mai-LHR London Heathrow
27h 20m1 stop Beijing Capital
Air China Logo
22:40 - 21:50LHR  London Heathrow-CNX Chiang Mai
17h 10m1 stop Beijing Capital
£755Air China
Booking Insights

KAYAK’s insights & trends for Chiang Mai to Heathrow flights

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

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

The cheapest return price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest return tickets from Chiang Mai to London Heathrow Airport were found on Air China (£636) and Etihad Airways (£676).

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

Cheapest flight

£262
Flight from Chiang Mai to London Heathrow Airport

When to book flights from Chiang Mai to Heathrow

Are your dates flexible? Find out the best times to travel from Chiang Mai to Heathrow 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 Chiang Mai to London Heathrow Airport flights

  • Where do flights with one stopover between Chiang Mai to Heathrow usually stop?

    Thai Airways flights usually stop in Bangkok. Korean Air flights generally stop in Seoul at Incheon Airport (ICN) and EVA Air flights also stop in Bangkok. You can also find flights with Singapore Airlines that stop at Singapore Changi Aiport (SIN). Some China Eastern flights have a single stopover in Shanghai (PVG) while most Cathay Pacific flights have two stops, although some include a single stopover in Hong Kong (HKG).

  • How much checked luggage can I bring on flights to Chiang Mai?

    Korean Air allows you to bring 23 kg on an Economy ticket. Qatar Airways allows 20 kg, 25 kg, 30 kg or 35 kg, depending on the type of Economy fare you choose. Thai Airways lets you bring 20 kg of checked luggage on their Standard Economy fare. Singapore Airlines lets you bring 25 kg on their Value and Lite fares and 30 kg on their Flexi and Standard fares.

  • How much carry-on luggage can I bring on flights to London?

    Korean Air allows you to bring 10 kg of carry on luggage spread across your suitcase and personal bag. Most other airlines let passengers bring up to 7 kg of carry on luggage, plus a small personal item. This item usually isn't weighed, but it generally can't be larger than 40 x 30 x 10 cm.

  • Which lounges can I use at Chiang Mai Airport (CNX)?

    Chiang Mai Airport has a number of lounges available. Bangkok Airways has two lounges in the Domestic Terminal. Thai Airways has lounges in the domestic and international terminals. You can also spend time at the Coral Executive Lounge. There's one in each terminal and they're open to all passengers for an additional fee.

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

    In the last 5 days, the lowest price for a flight from Chiang Mai to London Heathrow Airport was £262 for a one-way ticket and £562 for a return.

  • Which airports will I be using when flying from Chiang Mai to London Heathrow Airport?

    When flying out of Chiang Mai you will be using Chiang Mai. You will be landing at London Heathrow Airport, also known as London Heathrow.

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

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

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

    Star Alliance is the only airline alliance operating flights between Chiang Mai and London Heathrow Airport.

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

    The two airlines most popular with KAYAK users for flights from Chiang Mai to London are Air China and Etihad Airways. With an average price for the route of £546 and an overall rating of 7.4, Air China is the most popular choice. Etihad Airways is also a great choice for the route, with an average price of £694 and an overall rating of 7.3.

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

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chiang Mai 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 from Chiang Mai 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 Chiang Mai 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 to Chiang Mai with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chiang Mai 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 from Chiang Mai up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chiang Mai to London Heathrow Airport

  • If you need special assistance on this route, make sure to contact your airline at least 48 hours in advance. As there are some self-transfer routes with multiple airlines, check to see if you need to contact both airlines.
  • While there are many flights from Chiang Mai to London Heathrow Airport (LHR) with a single stopover, you can also find flights with two stopovers that are cheaper. Most stop in Bangkok (BKK) first. Oman Air flights then stop in Muscat and Etihad Airways flights stop in Abu Dhabi (AUH). Bangkok Airways and Austrian Airlines partner for a route that stops in Bangkok and Vienna (VIE)
  • After landing at London Heathrow Airport, you can head into Central London on the Heathrow Express. It takes around 15 minutes to arrive at London Paddington Station. Alternatively, you can take the Elizabeth Line train which takes slightly longer but is also cheaper.
  • If you fly with Emirates or Qatar Airways, you can use their stopover services on your second stopover in Dubai (DXB) or Doha (DOH). This service includes a stay at a luxury hotel and optional tours. If you have to book a long stopover with Emirates, you may be able to access this service for free.
  • If you have a stopover in Bangkok, make sure you check your ticket carefully. Some of these flights may depart from the Domestic Terminal in Chiang Mai, instead of the international one. This may also mean you'll need to go through a security check when you enter the International Terminal in Bangkok.

Reviews of the top airlines flying from Chiang Mai to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Chiang Mai to London. 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 Chiang Mai 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.
7.4
Air ChinaOverall score based on 160 reviews
7.8Boarding
6.5Entertainment
7.2Food
8.0Crew
7.2Comfort
Airline reviews

On time. Friendly and helpful flight attendants. The plane was clean. Having a wine available would have been nice.

10.0 ExcellentAnonymous, Dec 2025
Read more Air China reviews

On time. Friendly and helpful flight attendants. The plane was clean. Having a wine available would have been nice.

Worst than I expected, crew was not attentive, meal was as disgusting , they didn’t even drink selections as they would to other passengers. I felt discriminated

Nothing to complain of, the only reason I am not giving better marks is that I am used to flying with ANA and they are the top.

It's terrible that we can't do online check in because we didn't buy the tickets directly from Air china. It was not explained until I contacted Chatdeal and we could not sit together.

Food and service are good. Bathroom was lack of lotions and cleaning. That should be improved.

Food & service very good next I will pick up again

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced. Also, a cabin bag allows only 5kg!

I wish I had been able to choose a vegetarian meal. Crew friendly and helpful. Seat was ok. All quite efficient and pleasant. Would recommend for inner China travel for sure.

The flight is not bad, but the Business Lounge is not big enough for the quantity of people they accept and there is a limited options for food and beverages.

It was simply bad and on top of that my luggage hasn't been delivered until now. They can't even localize it which is just unacceptable when they are supposed to scan the bar code they put when we check in

Maybe some more information as to why the flight got delayed I understand may be tell your customers that missiles were fired at a specific airport wouldn't be reassuring to the customers and would cause mayhem but something like recent events have cause a delay on your flight or smth

Very disappointed to not have lounge access The shorter flight seats were uncomfortable

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

It’s a business class ticket but they didn’t give a lounge access

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.

It was OK as the seat which we paid for doesn’t have any window. We paid $120 for 3 seats but it’s for nothing. Crew could not help. None of the ports worked so all our phones went dry

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

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