£280 Cheap Flights from Chiang Mai (CNX) to London (LHR)

View £280 flight on Thu, 15 May 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 25% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at £280 for one-way flights and £539 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Eastern Airlines
Mon, 26 May - Tue, 10 Jun
CNX
Chiang Mai
LHR
London
£539 Return, found 3 days ago
£539
Return
found 3 days ago
Select China Eastern Airlines flight, departing Mon, 26 May from Chiang Mai to London, returning Tue, 10 Jun, priced at £539 found 3 days ago
China Southern Airlines
Mon, 9 Jun - Sun, 22 Jun
CNX
Chiang Mai
LHR
London
£554 Return, found 16 hours ago
£554
Return
found 16 hours ago
Select China Southern Airlines flight, departing Mon, 9 Jun from Chiang Mai to London, returning Sun, 22 Jun, priced at £554 found 16 hours ago
Air China
Fri, 9 May - Wed, 14 May
CNX
Chiang Mai
LHR
London
£618 Return, found 17 hours ago
£618
Return
found 17 hours ago
Select Air China flight, departing Fri, 9 May from Chiang Mai to London, returning Wed, 14 May, priced at £618 found 17 hours ago
Austrian Airlines
Thu, 11 Sep - Thu, 18 Sep
CNX
Chiang Mai
LHR
London
£711 Return, found 6 days ago
£711
Return
found 6 days ago
Select Austrian Airlines flight, departing Thu, 11 Sep from Chiang Mai to London, returning Thu, 18 Sep, priced at £711 found 6 days ago
Etihad Airways
Mon, 10 Nov - Mon, 24 Nov
CNX
Chiang Mai
LHR
London
£713 Return, found 3 days ago
£713
Return
found 3 days ago
Select Etihad Airways flight, departing Mon, 10 Nov from Chiang Mai to London, returning Mon, 24 Nov, priced at £713 found 3 days ago
Malaysia Airlines
Thu, 10 Jul - Sat, 20 Sep
CNX
Chiang Mai
LHR
London
£748 Return, found 3 days ago
£748
Return
found 3 days ago
Select Malaysia Airlines flight, departing Thu, 10 Jul from Chiang Mai to London, returning Sat, 20 Sep, priced at £748 found 3 days ago
Lufthansa
Thu, 5 Jun - Wed, 11 Jun
CNX
Chiang Mai
LHR
London
£754 Return, found 1 day ago
£754
Return
found 1 day ago
Select Lufthansa flight, departing Thu, 5 Jun from Chiang Mai to London, returning Wed, 11 Jun, priced at £754 found 1 day ago
Gulf Air
Tue, 16 Sep - Mon, 6 Oct
CNX
Chiang Mai
LHR
London
£771 Return, found 3 days ago
£771
Return
found 3 days ago
Select Gulf Air flight, departing Tue, 16 Sep from Chiang Mai to London, returning Mon, 6 Oct, priced at £771 found 3 days ago
Cathay Pacific
Thu, 23 Oct - Mon, 10 Nov
CNX
Chiang Mai
LHR
London
£777 Return, found 3 days ago
£777
Return
found 3 days ago
Select Cathay Pacific flight, departing Thu, 23 Oct from Chiang Mai to London, returning Mon, 10 Nov, priced at £777 found 3 days ago
China Airlines
Tue, 22 Jul - Mon, 1 Dec
CNX
Chiang Mai
LHR
London
£816 Return, found 5 days ago
£816
Return
found 5 days ago
Select China Airlines flight, departing Tue, 22 Jul from Chiang Mai to London, returning Mon, 1 Dec, priced at £816 found 5 days ago
Flight from Chiang Mai to London route information
Origin airport
Chiang Mai Intl.
Destination airport
Heathrow
Airlines serving
Air China, Asiana Airlines, Austrian Airlines, Cathay Pacific, China Airlines, China Eastern Airlines, China Southern Airlines, EVA Airways, Etihad Airways, Finnair, Gulf Air, KLM, Korean Air, Lufthansa, Malaysia Airlines, Oman Air, Qatar Airways, Thai Airways International, Turkish Airlines
Return price
£539
Distance
8962 km

Compare flights from Chiang Mai to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Chiang Mai to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Chiang Mai Intl. to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Chiang Mai Intl. (CNX) to Heathrow (LHR) 

The easiest way to view the best deals on flights from Chiang Mai to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Chiang Mai Intl. to Heathrow start at just £539 and range up to £816.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Chiang Mai and London
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Chiang Mai to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Chiang Mai Intl. to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from CNX to LHR?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight from CNX to Heathrow Airport (LHR) was £539. Cheap fares don’t stick around for long, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from CNX to London Heathrow?
Most flights can be cancelled online, but every airline has its own set of terms and conditions. If you do need to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from Chiang Mai Airport to Heathrow 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 CNX to Heathrow Airport (LHR) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from CNX to LHR?
The distance is around 9,000 kilometres. Travel pillow? Check. A change of clothes? Double check. We suggest you pack all the essentials for this long-haul Chiang Mai to Hounslow flight.
Which airlines fly direct from Chiang Mai Intl. Airport (CNX) to London Heathrow?
Direct flights aren’t available, so you’ll have to make at least one stop between Chiang Mai Intl. Airport (CNX) and Heathrow Airport. Take advantage of the layover time to stretch your legs and grab a bite to eat.
Are Chiang Mai Intl. Airport (CNX) to Heathrow Airport (LHR) flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes nab a bargain, with some super cheap fares from Chiang Mai Intl. Airport (CNX) to Heathrow Airport popping up a few weeks before the departure date. If you’d rather book ahead, Expedia compares and updates the best flight deals continuously — as early as 12 months in advance in some cases. It depends on the carrier though, as not every airline advertises prices so far in advance.

Explore a world of travel with Expedia

Chiang Mai Airports

Lampang

Lampang to London
£894.22
*Available to Expedia members.