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฿18,120 Cheap Flights from London (LHR) to Chiang Mai (CNX)

View ฿18,120 flight on Thu, 3 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 ฿18,120 for one-way flights and ฿30,120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Austrian Airlines
Sun, 20 Sept - Thu, 29 Oct
LHR
London
CNX
Chiang Mai
฿30,120 Return, found 12 hours ago
฿30,120
Return
found 12 hours ago
Select Austrian Airlines flight, departing Sun, 20 Sept from London to Chiang Mai, returning Thu, 29 Oct, priced at ฿30,120 found 12 hours ago
Austrian Airlines
Sun, 20 Sept - Thu, 29 Oct
LHR
London
CNX
Chiang Mai
฿30,185 Return, found 12 hours ago
฿30,185
Return
found 12 hours ago
Select Austrian Airlines flight, departing Sun, 20 Sept from London to Chiang Mai, returning Thu, 29 Oct, priced at ฿30,185 found 12 hours ago
Swiss International Air Lines
Sun, 20 Sept - Thu, 29 Oct
LHR
London
CNX
Chiang Mai
฿30,220 Return, found 12 hours ago
฿30,220
Return
found 12 hours ago
Select Swiss International Air Lines flight, departing Sun, 20 Sept from London to Chiang Mai, returning Thu, 29 Oct, priced at ฿30,220 found 12 hours ago
Swiss International Air Lines
Sun, 20 Sept - Thu, 29 Oct
LHR
London
CNX
Chiang Mai
฿30,290 Return, found 12 hours ago
฿30,290
Return
found 12 hours ago
Select Swiss International Air Lines flight, departing Sun, 20 Sept from London to Chiang Mai, returning Thu, 29 Oct, priced at ฿30,290 found 12 hours ago
Austrian Airlines
Sun, 20 Sept - Sun, 11 Oct
LHR
London
CNX
Chiang Mai
฿30,315 Return, found 18 hours ago
฿30,315
Return
found 18 hours ago
Select Austrian Airlines flight, departing Sun, 20 Sept from London to Chiang Mai, returning Sun, 11 Oct, priced at ฿30,315 found 18 hours ago
Lufthansa
Mon, 14 Sept - Wed, 30 Sept
LHR
London
CNX
Chiang Mai
฿30,365 Return, found 2 days ago
฿30,365
Return
found 2 days ago
Select Lufthansa flight, departing Mon, 14 Sept from London to Chiang Mai, returning Wed, 30 Sept, priced at ฿30,365 found 2 days ago
Cathay Pacific
Mon, 14 Sept - Wed, 30 Sept
LHR
London
CNX
Chiang Mai
฿33,255 Return, found 2 days ago
฿33,255
Return
found 2 days ago
Select Cathay Pacific flight, departing Mon, 14 Sept from London to Chiang Mai, returning Wed, 30 Sept, priced at ฿33,255 found 2 days ago
China Southern Airlines
Wed, 21 Oct - Mon, 2 Nov
LHR
London
CNX
Chiang Mai
฿34,710 Return, found 5 days ago
฿34,710
Return
found 5 days ago
Select China Southern Airlines flight, departing Wed, 21 Oct from London to Chiang Mai, returning Mon, 2 Nov, priced at ฿34,710 found 5 days ago
Etihad Airways
Tue, 29 Dec - Thu, 11 Feb
LHR
London
CNX
Chiang Mai
฿39,205 Return, found 13 hours ago
฿39,205
Return
found 13 hours ago
Select Etihad Airways flight, departing Tue, 29 Dec from London to Chiang Mai, returning Thu, 11 Feb, priced at ฿39,205 found 13 hours ago
EVA Airways
Sun, 20 Sept - Sun, 11 Oct
LHR
London
CNX
Chiang Mai
฿41,010 Return, found 18 hours ago
฿41,010
Return
found 18 hours ago
Select EVA Airways flight, departing Sun, 20 Sept from London to Chiang Mai, returning Sun, 11 Oct, priced at ฿41,010 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 ฿30,120. 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
Austrian Airlines, Cathay Pacific, China Airlines, China Southern Airlines, EVA Airways, Etihad Airways, Finnair, KLM, Korean Air, Lufthansa, Malaysia Airlines, Oman Air, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Thai Airways International, Turkish Airlines
Return price
฿30,120
Distance
8962 km

Book with confidence

Perfect flights from London to Chiang Mai

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to Chiang Mai. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Heathrow to Chiang Mai Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿18,120 and roundtrip prices from ฿30,120. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Chiang Mai Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Chiang Mai.
Perfect flights from London to Chiang Mai
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