£432 Cheap Flights from London (LHR) to Chiang Rai (CEI)

View £432 flight on Tue, 24 Jun 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Chiang Rai Intl. Airport (CEI)

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Cheap Flights from London (LHR) to Chiang Rai (CEI)

Prices were available within the past 7 days and start at £432 for one-way flights and £681 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Fri, 19 Sep - Sat, 4 Oct
LHR
London
CEI
Chiang Rai
£681 Return, found 2 hours ago
£681
Return
found 2 hours ago
Select Swiss International Air Lines flight, departing Fri, 19 Sep from London to Chiang Rai, returning Sat, 4 Oct, priced at £681 found 2 hours ago
Lufthansa
Tue, 2 Sep - Tue, 30 Sep
LHR
London
CEI
Chiang Rai
£692 Return, found 2 days ago
£692
Return
found 2 days ago
Select Lufthansa flight, departing Tue, 2 Sep from London to Chiang Rai, returning Tue, 30 Sep, priced at £692 found 2 days ago
Austrian Airlines
Tue, 2 Sep - Tue, 30 Sep
LHR
London
CEI
Chiang Rai
£694 Return, found 2 days ago
£694
Return
found 2 days ago
Select Austrian Airlines flight, departing Tue, 2 Sep from London to Chiang Rai, returning Tue, 30 Sep, priced at £694 found 2 days ago
Lufthansa
Mon, 2 Jun - Fri, 13 Jun
LHR
London
CEI
Chiang Rai
£695 Return, found 2 days ago
£695
Return
found 2 days ago
Select Lufthansa flight, departing Mon, 2 Jun from London to Chiang Rai, returning Fri, 13 Jun, priced at £695 found 2 days ago
Lufthansa
Tue, 2 Sep - Tue, 30 Sep
LHR
London
CEI
Chiang Rai
£700 Return, found 2 days ago
£700
Return
found 2 days ago
Select Lufthansa flight, departing Tue, 2 Sep from London to Chiang Rai, returning Tue, 30 Sep, priced at £700 found 2 days ago
Qatar Airways
Mon, 9 Jun - Mon, 30 Jun
LHR
London
CEI
Chiang Rai
£703 Return, found 5 hours ago
£703
Return
found 5 hours ago
Select Qatar Airways flight, departing Mon, 9 Jun from London to Chiang Rai, returning Mon, 30 Jun, priced at £703 found 5 hours ago
Qatar Airways
Tue, 13 May - Tue, 10 Jun
LHR
London
CEI
Chiang Rai
£706 Return, found 17 hours ago
£706
Return
found 17 hours ago
Select Qatar Airways flight, departing Tue, 13 May from London to Chiang Rai, returning Tue, 10 Jun, priced at £706 found 17 hours ago
Lufthansa
Tue, 27 May - Tue, 10 Jun
LHR
London
CEI
Chiang Rai
£707 Return, found 2 days ago
£707
Return
found 2 days ago
Select Lufthansa flight, departing Tue, 27 May from London to Chiang Rai, returning Tue, 10 Jun, priced at £707 found 2 days ago
Lufthansa
Wed, 4 Jun - Wed, 11 Jun
LHR
London
CEI
Chiang Rai
£708 Return, found 3 days ago
£708
Return
found 3 days ago
Select Lufthansa flight, departing Wed, 4 Jun from London to Chiang Rai, returning Wed, 11 Jun, priced at £708 found 3 days ago
Thai Airways International
Tue, 3 Feb - Tue, 17 Feb
LHR
London
CEI
Chiang Rai
£785 Return, found 2 days ago
£785
Return
found 2 days ago
Select Thai Airways International flight, departing Tue, 3 Feb from London to Chiang Rai, returning Tue, 17 Feb, priced at £785 found 2 days ago
Flight from London to Chiang Rai route information
Origin airport
Heathrow
Destination airport
Chiang Rai Intl.
Airlines serving
Lufthansa, Thai Airways International
Return price
£680
Distance
8918 km

Compare flights from London to Chiang Rai easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Chiang Rai. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Chiang Rai Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Chiang Rai Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Chiang Rai Intl. (CEI) 

The easiest way to view the best deals on flights from London to Chiang Rai today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Chiang Rai Intl. start at just £681 and range up to £785.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Chiang Rai
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Chiang Rai flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Chiang Rai Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from London Heathrow to Chiang Rai Intl. Airport (CEI)?
Pack your bags, because round-trip journeys from LHR to Mae Fah Luang - Chiang Rai Intl. Airport start from £681. That’s based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to lock in the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from London Heathrow to CEI?
We understand that circumstances change unexpectedly, so we’ve made it as hassle-free as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from LHR to Mae Fah Luang - Chiang Rai Intl. Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Heathrow Airport (LHR) to Chiang Rai Intl. Airport (CEI) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from London Heathrow to Mae Fah Luang - Chiang Rai Intl. Airport?
You’ll have 9,000 kilometres to cover on the long-haul Hounslow to Chiang Rai route. Wear comfortable clothes and consider taking a neck pillow with you.
Which airlines fly direct from Heathrow Airport (LHR) to CEI?
Flying directly between London Heathrow and Chiang Rai Intl. Airport (CEI) isn’t possible at the moment. However, you’ll still be able to book a flight to Chiang Rai with at least one stop.
Are London Heathrow to Chiang Rai Intl. Airport (CEI) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Heathrow Airport to Mae Fah Luang - Chiang Rai Intl. Airport last minute could be your ticket to a great deal. However, it could end up costing a great deal more! If you’d rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred air carrier hasn’t released tickets yet, check back regularly as deals are updated all the time on Expedia.

Explore a world of travel with Expedia

London Airports

London

Gatwick to Chiang Rai
£721.47
*Available to Expedia members.