Cheap flights from London Heathrow Airport to Chiang Mai from £324
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Chiang Mai departing on 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Etihad Airways flights from London Heathrow Airport to Chiang Mai
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How to get the cheapest flight ticket from London Heathrow Airport to Chiang Mai
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between London Heathrow Airport and Chiang Mai?
What is the cheapest month to fly to Chiang Mai?
The month of October is, on average, the cheapest month to fly to Chiang Mai from London Heathrow Airport, with most prices found around £691. If you aren’t able to travel during the month of October, then book flights to Chiang Mai from London Heathrow Airport during February instead. Flights to Chiang Mai in February, while not as cheap as those in October, still average around £703.
What is the cheapest day to depart on your flight to Chiang Mai?
The cheapest day to depart on your flight to Chiang Mai is on a Thursday when prices can be found for as low as £644. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £765.
What is the cheapest time of day to depart on your flight to Chiang Mai?
The cheapest time of day to fly to Chiang Mai is in the afternoon when flights can be purchased for as low as £561. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £937 on average. Flights to Chiang Mai from London Heathrow Airport at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.
How far in advance should I book a flight to Chiang Mai?
You are more likely to see cheaper flights to Chiang Mai from London Heathrow Airport when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to Chiang Mai for around £783 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chiang Mai from London Heathrow Airport for as low as £579 on momondo.
Can stopping save me money on London Heathrow Airport to Chiang Mai flights?
You could potentially save up to 6% on your flight if you consider stops on a London Heathrow Airport to Chiang Mai flight.
How have London Heathrow Airport to Chiang Mai flight prices changed over time?
As of June 2025, prices for London Heathrow Airport to Chiang Mai flights are approximately 3% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from London Heathrow to Chiang Mai?
China Southern, Malaysia Airlines, and Etihad Airways are the most popular carriers operating from London Heathrow to Chiang Mai
Which airlines fly to Chiang Mai?
Thai Airways, Air China and EVA Air are the top three most popular airlines that fly to Chiang Mai from London Heathrow Airport according to our data. Thai Airways is the first choice among our users, with 59% of people opting to fly with this airline when travelling to Chiang Mai. Keep in mind that there are 8 different airlines that fly to Chiang Mai on a routine basis, so you have a few additional options to choose from.
When to book flights from London Heathrow Airport to Chiang Mai
Cheap London Heathrow Airport to Chiang Mai (LHR to CNX) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Chiang Mai
How far is London Heathrow to Chiang Mai by plane?
A flight from London Heathrow to Chiang Mai will travel around 5597.7 mi. In terms of flight time, this usually takes a little over 13h 55m.
When did momondo last update prices for flights from London Heathrow Airport to Chiang Mai Airport?
Prices for flights from London Heathrow Airport to Chiang Mai Airport refresh daily.
How many operators does momondo search for flights from London Heathrow Airport to Chiang Mai Airport?
There are 8 operators available for flights from London Heathrow Airport to Chiang Mai Airport as of June 2025.
How old do you have to be to fly from London Heathrow Airport to Chiang Mai Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Chiang Mai Airport.
What documentation or ID do you need to fly to Chiang Mai Airport?
The necessary travel and health documents for your Chiang Mai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London Heathrow Airport to Chiang Mai?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London Heathrow Airport to Chiang Mai is Thai Airways (46% of total bookings). The next most popular airlines are Air China (16%), EVA Air (14%), and Malaysia Airlines (9%).
Best airlines flying from London Heathrow Airport to Chiang Mai
Compare and see reviews for airlines that fly from London Heathrow Airport to Chiang Mai with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £418 | Free Cancellation | Rating 7.5 99 reviews | |||
| PriceFrom £450 | Free Cancellation | Rating 7.2 150 reviews | |||
| PriceFrom £458 | Free Cancellation | Rating 7.2 92 reviews | |||
| PriceFrom £546 | Free Cancellation | Rating 7.4 263 reviews | |||
| PriceFrom £652 | Free Cancellation | Rating 7.4 1,211 reviews | |||
| PriceFrom £658 | Free Cancellation | Rating 8.4 1,202 reviews | |||
| PriceFrom £672 | Free Cancellation | Rating 7.5 892 reviews | |||
| PriceFrom £691 | Free Cancellation | Rating 7.7 335 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Chiang Mai?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Chiang Mai for you.
Can I find flights from London to Chiang Mai with flexible booking policies on momondo?
Flights from London to Chiang Mai with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to Chiang Mai?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chiang Mai from London.
I’m not ready to book a flight from London to Chiang Mai right now. Can momondo alert me if prices change?
If you are not ready to book a flight from London to Chiang Mai now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chiang Mai and let you know when they change.