Cheap flights from London-Heathrow to Chiang Rai
Cheap return flights from London-Heathrow to Chiang Rai
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Chiang Rai flight facts
What you need to know
What are the cheapest airlines?
- Thai Airways
- AirAsia
- British Airways
These airlines usually offer the cheapest flights from London-Heathrow to Chiang Rai.
What airlines fly indirectly?
- Emirates
- Qatar Airways
- Singapore Airlines
These airlines fly from London-Heathrow to Chiang Rai, but you’ll have at least one layover.
How long is the flight?
14 hours
This is the shortest flight time from London-Heathrow to Chiang Rai.
Alternative flights from the UK to Chiang Rai
Check out prices for other routes
Alternative flights from London-Heathrow
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the London-Heathrow/Chiang Rai route. There are around 35 flights on any given week from the UK to Chiang Rai and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from London-Heathrow to Chiang Rai
Tips and advice from our flight experts
You've searched for flights from London-Heathrow to Chiang Rai. We've found 25 flights and compared them to give you the best offer. Thai Airways is, on average, the cheapest for this route. Look out for them! The cheapest offer we've found is a one-way ticket for £81 from London-Heathrow to Chiang Rai on 23/01/2026 at 22:55.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 10 airlines that operate the 9,500 km flight from London-Heathrow to Chiang Rai.
To find the best offers, consider booking 2-3 months in advance or looking for last-minute deals. The low season is generally from May to September. AirAsia is a popular budget airline for this route, and the average flight duration is around 14 hours. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our flight + hotel service to book everything at once, saving you time and money!
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