Cheap Flights from London (LHR) to Chiang Mai (CNX) from HK$3,874~

View HK$3,874 flight on Fri, 8 May 2026Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Chiang Mai Intl. Airport (CNX)

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Find Cheap Flights from London (LHR) to Chiang Mai (CNX)

Prices were available within the past 7 days and start at HK$3,874 for one-way flights and HK$5,246 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Fri, 8 May - Tue, 12 May
LHR
London
CNX
Chiang Mai
HK$5,246 Return, found 18 hours ago
HK$5,246
Return
found 18 hours ago
Select Air China flight, departing Fri, 8 May from London to Chiang Mai, returning Tue, 12 May, priced at HK$5,246 found 18 hours ago
Air China
Sat, 22 Nov - Sat, 6 Dec
LHR
London
CNX
Chiang Mai
HK$5,339 Return, found 6 days ago
HK$5,339
Return
found 6 days ago
Select Air China flight, departing Sat, 22 Nov from London to Chiang Mai, returning Sat, 6 Dec, priced at HK$5,339 found 6 days ago
China Eastern Airlines
Fri, 21 Nov - Mon, 24 Nov
LHR
London
CNX
Chiang Mai
HK$6,142 Return, found 6 days ago
HK$6,142
Return
found 6 days ago
Select China Eastern Airlines flight, departing Fri, 21 Nov from London to Chiang Mai, returning Mon, 24 Nov, priced at HK$6,142 found 6 days ago
Austrian Airlines
Fri, 8 May - Tue, 12 May
LHR
London
CNX
Chiang Mai
HK$6,367 Return, found 18 hours ago
HK$6,367
Return
found 18 hours ago
Select Austrian Airlines flight, departing Fri, 8 May from London to Chiang Mai, returning Tue, 12 May, priced at HK$6,367 found 18 hours ago
Etihad Airways
Fri, 21 Nov - Mon, 24 Nov
LHR
London
CNX
Chiang Mai
HK$6,632 Return, found 6 days ago
HK$6,632
Return
found 6 days ago
Select Etihad Airways flight, departing Fri, 21 Nov from London to Chiang Mai, returning Mon, 24 Nov, priced at HK$6,632 found 6 days ago
China Southern Airlines
Sat, 22 Nov - Sat, 6 Dec
LHR
London
CNX
Chiang Mai
HK$7,047 Return, found 6 days ago
HK$7,047
Return
found 6 days ago
Select China Southern Airlines flight, departing Sat, 22 Nov from London to Chiang Mai, returning Sat, 6 Dec, priced at HK$7,047 found 6 days ago
Malaysia Airlines
Sun, 18 Jan - Fri, 27 Mar
LHR
London
CNX
Chiang Mai
HK$7,104 Return, found 21 hours ago
HK$7,104
Return
found 21 hours ago
Select Malaysia Airlines flight, departing Sun, 18 Jan from London to Chiang Mai, returning Fri, 27 Mar, priced at HK$7,104 found 21 hours ago
Cathay Pacific
Thu, 27 Nov - Wed, 3 Dec
LHR
London
CNX
Chiang Mai
HK$7,692 Return, found 4 days ago
HK$7,692
Return
found 4 days ago
Select Cathay Pacific flight, departing Thu, 27 Nov from London to Chiang Mai, returning Wed, 3 Dec, priced at HK$7,692 found 4 days ago
Swiss International Air Lines
Fri, 8 May - Tue, 12 May
LHR
London
CNX
Chiang Mai
HK$7,833 Return, found 18 hours ago
HK$7,833
Return
found 18 hours ago
Select Swiss International Air Lines flight, departing Fri, 8 May from London to Chiang Mai, returning Tue, 12 May, priced at HK$7,833 found 18 hours ago
China Airlines
Fri, 8 May - Tue, 12 May
LHR
London
CNX
Chiang Mai
HK$8,253 Return, found 18 hours ago
HK$8,253
Return
found 18 hours ago
Select China Airlines flight, departing Fri, 8 May from London to Chiang Mai, returning Tue, 12 May, priced at HK$8,253 found 18 hours ago

Frequently asked questions

How much is a flight from Heathrow Airport to CNX?
Round-trip journeys between Heathrow Airport and Chiang Mai Airport start from HK$5,246. This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from LHR to Chiang Mai Intl. Airport (CNX)?
Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Heathrow Airport to Chiang Mai Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Heathrow Airport (LHR) to Chiang Mai Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Heathrow Airport (LHR) to Chiang Mai Intl. Airport (CNX)?
You'll have 9,000 kilometers to cover on the long-haul Hounslow to Chiang Mai route. Dress in layers of comfortable clothes and consider taking a neck pillow with you.
Which airlines fly direct from London Heathrow to Chiang Mai Airport?
You won't find any airlines operating directly between LHR and CNX, so be prepared to make at least one stop on your journey. A layover, whether short or long, can be a welcome way to break up a trip!
Are LHR to CNX flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up great last-minute deals from LHR to CNX, but it's also possible to miss out entirely! As many airlines advertise prices up to 12 months in advance, it's worth keeping an eye on fares early and being ready to book when you spot a bargain. Expedia compares carrier prices and updates flight deals frequently, so you can feel confident knowing you're always seeing the latest offers.

Travel information

Origin airport
Heathrow
Destination airport
Chiang Mai Intl.
Airlines serving
Air China, Austrian Airlines, Cathay Pacific, China Airlines, China Southern Airlines, EVA Airways, Etihad Airways, Finnair, Gulf Air, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines
Return price
HK$5,246
Distance
8962 km

Book with confidence

Flights from London to Chiang Mai

Book cheap flights from London (LHR) to Chiang Mai (CNX) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from London (LHR) to Chiang Mai (CNX) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your London (LHR) to Chiang Mai (CNX) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Chiang Mai flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Chiang Mai and things to do in Chiang Mai for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Chiang Mai more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Chiang Mai is HK$3,874 now!

 

Flights from London to Chiang Mai

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