Thai Airways flights from Chiang Mai to London Heathrow Airport (CNX - LHR)
CNX — LHR
19 Oct — 26 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
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One-way
One-way Thai Airways flights to Heathrow
Search for one-way Thai Airways flight options to Heathrow. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.
Tue 24/1119:35 -
2 stops66h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 18/9฿17,216
Fri 25/909:25 -
1 stop15h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 18/9฿18,714
Sun 27/921:10 -
1 stop16h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 18/9฿18,914
Thai Airways flights from Chiang Mai to Heathrow in 2026
Find detailed information about Thai Airways flights from Chiang Mai to Heathrow. Explore the options provided by Thai Airways to plan your journey from Chiang Mai to Heathrow. Data last updated 19 September 2026.
Plan your trip to Heathrow by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.
Temperature in Heathrow by month
Plan your trip to Heathrow by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).
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.
CNX-LHR
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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If Heathrow is not for you, choose from these other destinations located in Europe. Flight routes are based on user searches made on Cheapflights and were last updated on 19 September 2026.
Browse through some of the most popular routes that Thai Airways offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 19 September 2026.
Read reviews and see what other travellers are saying about their experiences with Thai Airways. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Thai Airways for your next flight. Reviews last updated 19 September 2026.
Flight attendants are great. Plane very comfortable.
10.0
Wonderful|Feb 2026
Thai Airways. Was echt super goed.
10.0
Wonderful|Jan 2026
Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
1 out of 140
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