Cheap flights from Chiang Mai to London Heathrow Airport from ฿8,974
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 16/11. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Chiang Mai to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Heathrow (LHR). 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 15 September 2025.
Round-trip from | ฿20,993 |
---|---|
One-way from | ฿8,974 |
Popular in | June |
Cheapest in | October |
Average price | ฿38,339 |
Find flight deals from Chiang Mai to Heathrow
Cheapest flights from Chiang Mai to HeathrowExplore the most affordable flight options available from Chiang Mai to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.
Explore the most affordable flight options available from Chiang Mai to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Chiang Mai to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Tue 3/3
14:50-15:25
1 stop31h 35m
London Heathrow
Fri 13/3
21:25-11:25
1 stop31h 00m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Thu 5/3
14:50-15:25
1 stop31h 35m
London Heathrow
Sat 7/3
10:25-11:25
1 stop18h 00m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Mon 22/12
14:30-18:35
2 stops35h 05m
London Heathrow
Mon 5/1
20:25-21:50
1 stop18h 25m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Tue 7/10
17:20-20:00
2 stops32h 40m
London Heathrow
Mon 27/10
20:25-21:50
1 stop18h 25m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Wed 1/10
12:35-16:35
1 stop34h 00m
London Heathrow
Wed 15/10
22:40-21:50
1 stop17h 10m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Tue 30/9
10:05-18:40
2 stops38h 35m
London Heathrow
Thu 16/10
20:25-21:50
1 stop19h 25m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Sat 20/12
23:05-17:50
1 stop25h 45m
London Heathrow
Sat 3/1
20:25-21:50
1 stop18h 25m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Thu 9/10
18:50-19:00
1 stop30h 10m
London Heathrow
Wed 22/10
21:00-17:50
2 stops38h 50m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Sat 11/10
23:05-17:45
1 stop24h 40m
London Heathrow
Sat 18/10
20:25-21:50
1 stop19h 25m
Chiang MaiLondon
CNX - LHR
CNXLHR
Chiang Mai
Mon 29/9
09:25-19:15
1 stop15h 50m
London Heathrow
Wed 15/10
22:40-21:50
1 stop17h 10m
Best time to book a flight from Chiang Mai to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Chiang Mai with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Chiang Mai to London Heathrow Airport
What is the cheapest time of day to fly from CNX to LHR?
It’s typically best to fly out from Chiang Mai to London Heathrow Airport 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 Chiang Mai to London Heathrow Airport?
What’s the top stopover airport for flights from Chiang Mai to London Heathrow Airport?
Bangkok (BKK) – chosen by Cheapflights users on 45% of one-stop itineraries from Chiang Mai to London Heathrow Airport on Cheapflights.
What’s the fastest stopover option from Chiang Mai to London Heathrow Airport?
Flights via Abu Dhabi (AUH) have the shortest average one-way travel time for one-stop routes: 16h 35m.
What’s the fastest stopover option from Chiang Mai to London Heathrow Airport?
Flights via Abu Dhabi (AUH) have the shortest average one-way travel time for one-stop routes: 16h 35m.
Which airport typically offers the quickest stopover for flights from Chiang Mai to London Heathrow Airport?
Flights via Abu Dhabi (AUH) offer the fastest connection on this route, with an average stopover time of 1h 23m.
Related info for your journey
Find useful and relevant information for your journey from Chiang Mai to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near London Heathrow Airport?
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Alternative routes for Chiang Mai to Heathrow
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Fly with Cheapflights
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How does Cheapflights help users find flights from Chiang Mai to Heathrow?
Cheapflights helps you search for flights from Chiang Mai to Heathrow 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 Chiang Mai to Heathrow?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Chiang Mai to Heathrow for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Chiang Mai to Heathrow with no change fees?
Need flexible booking options for your flight to Heathrow from Chiang Mai? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Chiang Mai to Heathrow become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Chiang Mai today and book when prices fit your budget.