฿12,760 Cheap Flights from London (LHR) to Chiang Mai (CNX)

View ฿12,760 flight on Wed, 23 Sept 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at ฿12,760 for one-way flights and ฿18,075 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Sun, 20 Sept - Thu, 15 Oct
LHR
London
CNX
Chiang Mai
฿18,075 Return, found 2 days ago
฿18,075
Return
found 2 days ago
Select Air China flight, departing Sun, 20 Sept from London to Chiang Mai, returning Thu, 15 Oct, priced at ฿18,075 found 2 days ago
Air China
Sat, 7 Nov - Sat, 21 Nov
LHR
London
CNX
Chiang Mai
฿22,345 Return, found 5 days ago
฿22,345
Return
found 5 days ago
Select Air China flight, departing Sat, 7 Nov from London to Chiang Mai, returning Sat, 21 Nov, priced at ฿22,345 found 5 days ago
Etihad Airways
Sun, 31 Jan - Mon, 15 Feb
LHR
London
CNX
Chiang Mai
฿28,360 Return, found 21 hours ago
฿28,360
Return
found 21 hours ago
Select Etihad Airways flight, departing Sun, 31 Jan from London to Chiang Mai, returning Mon, 15 Feb, priced at ฿28,360 found 21 hours ago
China Eastern Airlines
Tue, 21 Apr - Tue, 30 Jun
LHR
London
CNX
Chiang Mai
฿31,330 Return, found 2 days ago
฿31,330
Return
found 2 days ago
Select China Eastern Airlines flight, departing Tue, 21 Apr from London to Chiang Mai, returning Tue, 30 Jun, priced at ฿31,330 found 2 days ago
Gulf Air
Mon, 18 May - Tue, 26 May
LHR
London
CNX
Chiang Mai
฿33,535 Return, found 4 days ago
฿33,535
Return
found 4 days ago
Select Gulf Air flight, departing Mon, 18 May from London to Chiang Mai, returning Tue, 26 May, priced at ฿33,535 found 4 days ago
Singapore Airlines
Thu, 24 Sept - Thu, 1 Oct
LHR
London
CNX
Chiang Mai
฿37,165 Return, found 2 days ago
฿37,165
Return
found 2 days ago
Select Singapore Airlines flight, departing Thu, 24 Sept from London to Chiang Mai, returning Thu, 1 Oct, priced at ฿37,165 found 2 days ago
Malaysia Airlines
Mon, 28 Sept - Tue, 6 Oct
LHR
London
CNX
Chiang Mai
฿38,415 Return, found 2 days ago
฿38,415
Return
found 2 days ago
Select Malaysia Airlines flight, departing Mon, 28 Sept from London to Chiang Mai, returning Tue, 6 Oct, priced at ฿38,415 found 2 days ago
China Airlines
Wed, 16 Sept - Thu, 15 Oct
LHR
London
CNX
Chiang Mai
฿39,000 Return, found 2 days ago
฿39,000
Return
found 2 days ago
Select China Airlines flight, departing Wed, 16 Sept from London to Chiang Mai, returning Thu, 15 Oct, priced at ฿39,000 found 2 days ago
EVA Airways
Mon, 21 Sept - Tue, 6 Oct
LHR
London
CNX
Chiang Mai
฿40,675 Return, found 20 hours ago
฿40,675
Return
found 20 hours ago
Select EVA Airways flight, departing Mon, 21 Sept from London to Chiang Mai, returning Tue, 6 Oct, priced at ฿40,675 found 20 hours ago
Qatar Airways
Mon, 18 May - Tue, 26 May
LHR
London
CNX
Chiang Mai
฿41,495 Return, found 4 days ago
฿41,495
Return
found 4 days ago
Select Qatar Airways flight, departing Mon, 18 May from London to Chiang Mai, returning Tue, 26 May, priced at ฿41,495 found 4 days 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 ฿18,075. 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 kilometres 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, EVA Airways, Etihad Airways, Finnair, Gulf Air, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Thai Airways International
Return price
฿18,075
Distance
8962 km
*Available to Expedia members.