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Thai Airways flights from Chiang Mai to London Heathrow Airport (CNX - LHR)

CNX — LHR
14 Aug — 21 Aug1
1 adult
1 adult, Economy, 0 bags

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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 15 July 2026.

Sat 2/115:25
CNX
-
LHR
1 stop35h 10m
Thai Airways
Deal found 14/7฿20,519

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 15 July 2026.

One-way from

฿20,519
Thai Airways
  • Thai Airways
  • 2/1
  • 1 total stop
  • 35h 10m total
  • Chiang Mai to London
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Rainfall in Heathrow by month

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.
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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See what others are saying about Thai Airways

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 15 July 2026.
Thai Airways
7.9
Good
409 reviews
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Overview

Crew

8.4

Entertainment

6.9

Food

7.4

Comfort

7.7

Boarding

7.9

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