€337 Cheap Flights London to Chiang Mai (LHR-CNX)

View €337 flight on Mon, 14 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 to Chiang Mai (LHR-CNX)

Prices were available within the past 7 days and start at €337 for one-way flights and €477 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Mon, 14 Sept - Tue, 27 Oct
LHR
London
CNX
Chiang Mai
€477 Return, found 2 days ago
€477
Return
found 2 days ago
Select Air China flight, departing Mon, 14 Sept from London to Chiang Mai, returning Tue, 27 Oct, priced at €477 found 2 days ago
Air China
Mon, 14 Sept - Tue, 27 Oct
LHR
London
CNX
Chiang Mai
€535 Return, found 2 days ago
€535
Return
found 2 days ago
Select Air China flight, departing Mon, 14 Sept from London to Chiang Mai, returning Tue, 27 Oct, priced at €535 found 2 days ago
Air China
Mon, 14 Sept - Tue, 27 Oct
LHR
London
CNX
Chiang Mai
€717 Return, found 2 days ago
€717
Return
found 2 days ago
Select Air China flight, departing Mon, 14 Sept from London to Chiang Mai, returning Tue, 27 Oct, priced at €717 found 2 days ago
Air China
Mon, 14 Sept - Tue, 27 Oct
LHR
London
CNX
Chiang Mai
€765 Return, found 2 days ago
€765
Return
found 2 days ago
Select Air China flight, departing Mon, 14 Sept from London to Chiang Mai, returning Tue, 27 Oct, priced at €765 found 2 days ago
Air China
Mon, 14 Sept - Tue, 27 Oct
LHR
London
CNX
Chiang Mai
€845 Return, found 2 days ago
€845
Return
found 2 days ago
Select Air China flight, departing Mon, 14 Sept from London to Chiang Mai, returning Tue, 27 Oct, priced at €845 found 2 days ago
Lufthansa
Mon, 14 Sept - Tue, 27 Oct
LHR
London
CNX
Chiang Mai
€912 Return, found 2 days ago
€912
Return
found 2 days ago
Select Lufthansa flight, departing Mon, 14 Sept from London to Chiang Mai, returning Tue, 27 Oct, priced at €912 found 2 days ago
Etihad Airways
Tue, 27 Oct - Tue, 17 Nov
LHR
London
CNX
Chiang Mai
€927 Return, found 11 hours ago
€927
Return
found 11 hours ago
Select Etihad Airways flight, departing Tue, 27 Oct from London to Chiang Mai, returning Tue, 17 Nov, priced at €927 found 11 hours ago
EVA Airways
Mon, 14 Sept - Tue, 27 Oct
LHR
London
CNX
Chiang Mai
€1,063 Return, found 2 days ago
€1,063
Return
found 2 days ago
Select EVA Airways flight, departing Mon, 14 Sept from London to Chiang Mai, returning Tue, 27 Oct, priced at €1,063 found 2 days ago
Gulf Air
Mon, 11 May - Wed, 27 May
LHR
London
CNX
Chiang Mai
€1,068 Return, found 13 hours ago
€1,068
Return
found 13 hours ago
Select Gulf Air flight, departing Mon, 11 May from London to Chiang Mai, returning Wed, 27 May, priced at €1,068 found 13 hours ago
Singapore Airlines
Mon, 14 Sept - Tue, 27 Oct
LHR
London
CNX
Chiang Mai
€1,092 Return, found 2 days ago
€1,092
Return
found 2 days ago
Select Singapore Airlines flight, departing Mon, 14 Sept from London to Chiang Mai, returning Tue, 27 Oct, priced at €1,092 found 2 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 €477. 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, Etihad Airways, Gulf Air, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines
Return price
€477
Distance
8962 km

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