Cheap flights from London Heathrow Airport to Chiang Mai from £319
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from London Heathrow to Chiang Mai are usually found in October or February, booked 61 days in advance, depart on a Sunday or Monday and return on a Monday
Cheap flight deals from Heathrow to Chiang Mai
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Chiang Mai (CNX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 luglio 2025.
Round-trip from | £589 |
---|---|
One-way from | £319 |
Popular in | July |
Cheapest in | October |
Average price | £1,029 |
Find flight deals from Heathrow to Chiang Mai
Cheapest flights from Heathrow to Chiang MaiExplore the most affordable flight options available from Heathrow to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 luglio 2025.
Explore the most affordable flight options available from Heathrow to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 luglio 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Heathrow to Chiang Mai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 luglio 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Chiang Mai that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
mar 30/9
20:50-21:50
2 stops19h 00m
Chiang Mai
ven 28/11
22:50-05:55
2 stops38h 05m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
ven 14/11
21:00-14:20
1 stop34h 20m
Chiang Mai
ven 21/11
16:25-17:30
2 stops56h 05m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
lun 22/9
20:25-21:50
1 stop19h 25m
Chiang Mai
sab 22/11
23:05-15:55
1 stop23h 50m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
dom 12/10
21:45-09:20
2 stops29h 35m
Chiang Mai
gio 6/11
08:50-06:45
1 stop28h 55m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
mar 16/9
22:10-17:50
1 stop37h 40m
Chiang Mai
sab 27/9
18:50-19:00
1 stop30h 10m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
dom 28/9
07:00-17:55
3 stops28h 55m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
mer 3/9
22:10-17:50
1 stop37h 40m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
mer 3/9
22:05-13:45
2 stops33h 40m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
mer 3/9
21:20-09:05
3 stops29h 45m
LondonChiang Mai
LHR - CNX
LHRCNX
London Heathrow
mer 1/10
21:10-10:20
1 stop31h 10m
Best time to book a flight from Heathrow to Chiang Mai
Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Heathrow with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Chiang Mai
How far ahead should I book a flight from London Heathrow Airport to Chiang Mai?
Use this chart to determine the optimal time to book a return flight from Heathrow to Chiang Mai. Price data was last updated on 27 June 2025.
The price you pay for your flight from London Heathrow Airport to Chiang Mai may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from London Heathrow Airport to Chiang Mai?
Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Chiang Mai (average of £776). Flying from London Heathrow Airport to Chiang Mai in July is currently the most expensive (average of £1,358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LHR to CNX?
Find hourly flight availability from Heathrow to Chiang Mai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 luglio 2025.
It’s typically best to fly out from London Heathrow Airport to Chiang Mai at midday. Doing so could potentially save you 27% on the flight price compared to flying in the morning, which is usually more expensive.
How much does it cost for a return flight from London Heathrow Airport to Chiang Mai?
Reviews of airlines servicing Chiang Mai
Get insights into the airlines that provide service to Chiang Mai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Mai. Reviews last updated 3 luglio 2025.
Get a feel of what it's like to fly with EVA Air, China Airlines, andThai Airways from London Heathrow Airport to Chiang Mai by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Boarding
Comfort
Entertainment
Overall
Food
Reviews
Dale,May 2025
TPE - SFO
Crew
Boarding
Comfort
Entertainment
Overall
Food
Reviews
Dale,May 2025
TPE - SFO
Crew
Boarding
Comfort
Entertainment
Overall
Food
Reviews
Dale,May 2025
TPE - SFO
Crew
Boarding
Comfort
Entertainment
Overall
Food
Reviews
Dale,May 2025
TPE - SFO
Crew
Boarding
Comfort
Entertainment
Overall
Food
Reviews
Dale,May 2025
TPE - SFO
Crew
Boarding
Comfort
Entertainment
Overall
Food
Reviews
Dale,May 2025
TPE - SFO
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Heathrow to Chiang Mai
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from Heathrow to Chiang Mai
Discover the top 8 airlines that operate flights from Heathrow to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 luglio 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to Chiang Mai?
Cheapflights helps you search for flights from Heathrow to Chiang Mai via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Chiang Mai?
Cheapflights helps you find that perfect flight to Chiang Mai from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Heathrow to Chiang Mai with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Chiang Mai, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Heathrow to Chiang Mai become cheaper?
Yes, Cheapflights offers price alerts on Heathrow to Chiang Mai flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.