Cheap flights from London Heathrow to Chiang Rai

from as little as £841

31 nights in Chiang Rai, departing London Heathrow on 01 / Oct / 2025 with Qatar Airways (price found 4 hours ago)

Subject to availability, prices correct of the last 24 hours
Chiang Rai

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The London Heathrow / Chiang Rai route

All 8979 km of it

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Chiang Rai flight facts

What you need to know

Alternative flights from the UK to Chiang Rai

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Chiang Rai

Today alone, Netflights has searched over 82 flights. 01 / Oct / 2025 is currently the lowest priced day of the year to fly the London Heathrow/Chiang Rai route. There are around 84 flights on any given week from the UK to Chiang Rai and the cheapest month to fly right now is October.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

11 °C

AVG

24 °C

HIGHEST

34 °C

Rainfall (mm)
LOWEST

9 mm

AVG

138.2 mm

HIGHEST

378 mm

Key facts about Chiang Rai

How to get cheap flights from London Heathrow to Chiang Rai

Tips and advice from our flight experts

If you're looking to fly from London Heathrow to Chiang Rai, you might like to know that 01 / Oct / 2025 currently has the cheapest flights. At the moment, there are five airlines flying to Chiang Rai. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Chiang Rai.

There are 84 flights from London Heathrow to or via Chiang Rai every week. Out of the five available airlines, the most popular ones are Thai Airways International, Qatar Airways & Lufthansa. But that doesn’t necessarily mean they’ll be the best option for your travel dates. To see as many flights as possible, try widening your search to include other departure airports.

The distance between London Heathrow to Chiang Rai is 8979 km. Normally, it takes about 17 hrs 50 mins to fly, and you can definitely expect the journey to be at least 14 hrs 50 mins. You can see the various flight times in the results.

December is normally the cheapest month to fly to Chiang Rai, but it’s important to try different options when you search. Searching by month, for instance, will show you the best time of the week to fly. April is always the most expensive time to fly but, if you check regularly and book early, you have a better chance of getting a good deal.

Other popular destinations near Chiang Rai

Where other people are flying to

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