€429 Cheap Flights London to Chiang Mai (LHR-CNX)

View €429 flight on Fri, 20 Nov 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 €429 for one-way flights and €886 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Fri, 20 Nov - Fri, 27 Nov
LHR
London
CNX
Chiang Mai
€886 Return, found 3 days ago
€886
Return
found 3 days ago
Select Air China flight, departing Fri, 20 Nov from London to Chiang Mai, returning Fri, 27 Nov, priced at €886 found 3 days ago
Qatar Airways
Sat, 30 May - Sat, 6 Jun
LHR
London
CNX
Chiang Mai
€894 Return, found 3 days ago
€894
Return
found 3 days ago
Select Qatar Airways flight, departing Sat, 30 May from London to Chiang Mai, returning Sat, 6 Jun, priced at €894 found 3 days ago
Air China
Fri, 20 Nov - Fri, 27 Nov
LHR
London
CNX
Chiang Mai
€901 Return, found 3 days ago
€901
Return
found 3 days ago
Select Air China flight, departing Fri, 20 Nov from London to Chiang Mai, returning Fri, 27 Nov, priced at €901 found 3 days ago
Air China
Fri, 20 Nov - Fri, 27 Nov
LHR
London
CNX
Chiang Mai
€919 Return, found 3 days ago
€919
Return
found 3 days ago
Select Air China flight, departing Fri, 20 Nov from London to Chiang Mai, returning Fri, 27 Nov, priced at €919 found 3 days ago
Air China
Fri, 26 Jun - Sat, 4 Jul
LHR
London
CNX
Chiang Mai
€927 Return, found 1 day ago
€927
Return
found 1 day ago
Select Air China flight, departing Fri, 26 Jun from London to Chiang Mai, returning Sat, 4 Jul, priced at €927 found 1 day ago
Air China
Fri, 20 Nov - Fri, 27 Nov
LHR
London
CNX
Chiang Mai
€948 Return, found 3 days ago
€948
Return
found 3 days ago
Select Air China flight, departing Fri, 20 Nov from London to Chiang Mai, returning Fri, 27 Nov, priced at €948 found 3 days ago
Air China
Fri, 20 Nov - Fri, 27 Nov
LHR
London
CNX
Chiang Mai
€966 Return, found 3 days ago
€966
Return
found 3 days ago
Select Air China flight, departing Fri, 20 Nov from London to Chiang Mai, returning Fri, 27 Nov, priced at €966 found 3 days ago
Austrian Airlines
Sat, 30 May - Sat, 6 Jun
LHR
London
CNX
Chiang Mai
€1,008 Return, found 3 days ago
€1,008
Return
found 3 days ago
Select Austrian Airlines flight, departing Sat, 30 May from London to Chiang Mai, returning Sat, 6 Jun, priced at €1,008 found 3 days ago
Lufthansa
Sat, 30 May - Sat, 6 Jun
LHR
London
CNX
Chiang Mai
€1,010 Return, found 3 days ago
€1,010
Return
found 3 days ago
Select Lufthansa flight, departing Sat, 30 May from London to Chiang Mai, returning Sat, 6 Jun, priced at €1,010 found 3 days ago
Etihad Airways
Fri, 20 Nov - Fri, 27 Nov
LHR
London
CNX
Chiang Mai
€1,179 Return, found 3 days ago
€1,179
Return
found 3 days ago
Select Etihad Airways flight, departing Fri, 20 Nov from London to Chiang Mai, returning Fri, 27 Nov, priced at €1,179 found 3 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 €886. 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, Finnair, Korean Air, Malaysia Airlines, Singapore Airlines, Thai Airways International
Return price
€886
Distance
8962 km

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