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Cheap Flights from London Heathrow to Chiang Mai

Compare London Heathrow to Chiang Mai flight deals

Find the cheapest month or even day of the year to fly to Chiang Mai

Book the best Chiang Mai fare with no extra fees

Flight deals from London Heathrow to Chiang Mai

Looking for a cheap last-minute deal or the best return flight from London Heathrow to Chiang Mai? Find the lowest prices on one-way and return tickets right here.
Chiang Mai.559 € per passenger.Departing Thu, 24 Apr, returning Fri, 9 May.Return flight with China Southern and Thai VietJet Air.Outbound indirect flight with China Southern, departs from London Heathrow on Thu, 24 Apr, arriving in Chiang Mai.Inbound indirect flight with Thai VietJet Air, departs from Chiang Mai on Fri, 9 May, arriving in London Heathrow.Price includes taxes and charges.From 559 €, select.
Chiang Mai.559 € per passenger.Departing Tue, 13 May, returning Wed, 21 May.Return flight with China Southern and Thai VietJet Air.Outbound indirect flight with China Southern, departs from London Heathrow on Tue, 13 May, arriving in Chiang Mai.Inbound indirect flight with Thai VietJet Air, departs from Chiang Mai on Wed, 21 May, arriving in London Heathrow.Price includes taxes and charges.From 559 €, select.
Chiang Mai.573 € per passenger.Departing Mon, 26 May, returning Mon, 9 Jun.Return flight with China Southern and Thai VietJet Air.Outbound indirect flight with China Southern, departs from London Heathrow on Mon, 26 May, arriving in Chiang Mai.Inbound indirect flight with Thai VietJet Air, departs from Chiang Mai on Mon, 9 Jun, arriving in London Heathrow.Price includes taxes and charges.From 573 €, select.
Chiang Mai.601 € per passenger.Departing Sun, 8 Jun, returning Fri, 27 Jun.Return flight with Shenzhen Airlines and Thai AirAsia.Outbound indirect flight with Shenzhen Airlines, departs from London Heathrow on Sun, 8 Jun, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departs from Chiang Mai on Fri, 27 Jun, arriving in London Heathrow.Price includes taxes and charges.From 601 €, select.
Chiang Mai.620 € per passenger.Departing Sun, 8 Jun, returning Sat, 5 Jul.Return flight with Shenzhen Airlines and Thai AirAsia.Outbound indirect flight with Shenzhen Airlines, departs from London Heathrow on Sun, 8 Jun, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departs from Chiang Mai on Sat, 5 Jul, arriving in London Heathrow.Price includes taxes and charges.From 620 €, select.
Chiang Mai.641 € per passenger.Departing Mon, 21 Apr, returning Mon, 16 Jun.Return flight with China Southern.Outbound indirect flight with China Southern, departs from London Heathrow on Mon, 21 Apr, arriving in Chiang Mai.Inbound indirect flight with China Southern, departs from Chiang Mai on Mon, 16 Jun, arriving in London Heathrow.Price includes taxes and charges.From 641 €, select.
Chiang Mai.653 € per passenger.Departing Tue, 27 May, returning Fri, 12 Dec.Return flight with China Eastern.Outbound indirect flight with China Eastern, departs from London Heathrow on Tue, 27 May, arriving in Chiang Mai.Inbound indirect flight with China Eastern, departs from Chiang Mai on Fri, 12 Dec, arriving in London Heathrow.Price includes taxes and charges.From 653 €, select.
Chiang Mai.663 € per passenger.Departing Fri, 14 Nov, returning Fri, 21 Nov.Return flight with Shenzhen Airlines and Thai AirAsia.Outbound indirect flight with Shenzhen Airlines, departs from London Heathrow on Fri, 14 Nov, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departs from Chiang Mai on Fri, 21 Nov, arriving in London Heathrow.Price includes taxes and charges.From 663 €, select.

Find the cheapest month to fly from London Heathrow to Chiang Mai

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Chiang Mai flights are currently cheapest in May.
Apr
from 913 €
May
from 559 €
Jun
from 601 €
Jul
from 796 €
Aug
from 1.055 €
Sep
from 696 €
Oct
from 774 €
Nov
from 663 €
Dec
from 812 €
Jan
from 822 €
Feb
from 768 €
Mar
from 768 €

London Heathrow to Chiang Mai: Alternative routes

Compare routes from London Heathrow to Chiang Mai below. You may find an airport to fly into that's cheaper, faster, or easier than Chiang Mai.

London to Chiang Mai: Flight information

The things to know before you go.
Cheapest flight found559 €
Cheapest month to flyMay

Finding cheap flights from London Heathrow to Chiang Mai: Frequently asked questions

The best price we found for a return flight from London Heathrow to Chiang Mai is 559 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London Heathrow to Chiang Mai. But we found flights with one or more stops from 559 €.
As of April 2025, there are no flights flying from London Heathrow to Chiang Mai.
The cheapest month to fly from London Heathrow to Chiang Mai is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Chiang Mai Airport on Tuesday, 13 May 2025.
No airlines currently offer direct flights between London Heathrow Airport and Chiang Mai Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chiang Mai but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chiang Mai is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, China Southern offers the cheapest flight tickets to Chiang Mai.

Flying from London Heathrow Airport (LHR) to Chiang Mai International Airport (CNX): what you need to know

  • The timezone in Chiang Mai is UTC+7, which is seven hours ahead of London.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Be at the airport on time to board your LHR to CNX flight.

  • During popular months such as July, you'll want to get to the airport earlier than normal. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're flying during a peak period in general.

  • If you'd like to include a stop along the way, simply uncheck 'Direct flights only' when searching for your ticket from London Heathrow Airport to Chiang Mai International Airport. Here are the most popular stopovers between LHR and CNX:

    • Suvarnabhumi Airport

    • Hong Kong International Airport

    • Shanghai Pudong International Airport

How to find the cheapest flights from London Heathrow Airport (LHR) to Chiang Mai International Airport (CNX)

  • 290 € is currently the lowest price for a one-way London Heathrow Airport to Chiang Mai International Airport flight. A return flight starts from 559 €. These prices can change based on availability and demand.

  • To get your hands on cheap tickets from LHR to CNX, book in advance. Airlines typically offer their best fares when flights are first made available.

  • Finding cheap flights from London Heathrow Airport to Chiang Mai International Airport is easy if you can be flexible with your travel plans. Use the 'Whole month' function to see the lowest prices across every month and snap up a great deal.

  • Save time searching for cheap flights from LHR to CNX by setting up a Price Alert. We'll send you an email or notification on the app when fares go down.

  • Tailor your trip using filters. Select your ideal arrival and departure times, total journey duration and airlines. You can also sort results by 'Best,' 'Cheapest' or 'Fastest' flights from London Heathrow Airport to Chiang Mai International Airport.

Handy information about London Heathrow Airport (LHR)

  • 68.18% of flights taking off from London Heathrow Airport land at their destination on time.

  • To reach London Heathrow Airport from central London, it'll take about 55 minutes if you're going by car. Of course, this depends on traffic conditions. It's approximately 31 kilometres from the airport to the city centre.

  • Planning to take public transport? Expect a journey time of around 1 hour.

  • Get your break off to a leisurely start by staying near LHR. Whether you're taking an early flight from London Heathrow Airport to Chiang Mai International Airport or just don't want to be rushed, these stays are ideal:

Arriving at Chiang Mai International Airport (CNX)

Getting from Chiang Mai International Airport (CNX) to central Chiang Mai

  • Chiang Mai International Airport to central Chiang Mai has a drive time of about 10 minutes. It's approximately 5 kilometres away.

  • It'll take around 25 minutes to get there using public transport.

When to fly to Chiang Mai International Airport (CNX)

  • The quietest month for a flight from London Heathrow Airport to Chiang Mai International Airport is February, while August is the most popular. Choose the ideal time to visit Chiang Mai based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • The warmest month in Chiang Mai is April, with the temperature ranging between 22ºC (72ºF) and 42ºC (108ºF). Book your flights from London Heathrow Airport to Chiang Mai International Airport in this month if you enjoy this type of weather.

  • If you like travelling in cooler conditions, look for a cheap ticket from LHR to CNX in January. Temperatures average between 12ºC (54ºF) and 31ºC (88ºF) then.

Explore more of Thailand

  • Udon Thani is just one of the many cities in Thailand waiting to be discovered after you've experienced Chiang Mai. Around 434 kilometres away to the east, check out popular attractions including Nong Prajak Public Park, Krom Luang Prachaksinlapakhom Monument and Chinesisches Tor.

  • If you're looking to explore another well-known destination in Thailand, head for Lampang, roughly 80 kilometres south-east of Chiang Mai. Baan Sao Nak, Ratsadapisek Bridge and Horse-Drawn Carriage are key reasons to visit.

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Plan the rest of your trip from London to Chiang Mai

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.