Which airlines fly to Chiang Rai?

Thai Airways, Etihad Airways and Air China are the top three most popular airlines that fly to Chiang Rai from London Heathrow Airport according to our data. Thai Airways is the first choice among our users, with 41% of people opting to fly with this airline when travelling to Chiang Rai. Keep in mind that there are 7 different airlines that fly to Chiang Rai on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from London Heathrow Airport to Chiang Rai Airport?

Prices for flights from London Heathrow Airport to Chiang Rai Airport are updated daily.

How many operators does momondo search for flights from London Heathrow Airport to Chiang Rai Airport?

There is 1 operator available for flights from London Heathrow Airport to Chiang Rai Airport as of July 2026.

How old do you have to be to fly from London Heathrow Airport to Chiang Rai Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Chiang Rai Airport.

What documentation or ID do you need to fly to Chiang Rai Airport?

The necessary travel and health documents for your Chiang Rai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£356 Cheap Flights from London Heathrow Airport to Chiang Rai in 2026

Find the cheapest flights from London Heathrow Airport to Chiang Rai

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:45 - 19:25

LHR

CEI

22h 40m

2 stops

15:25 - 18:45

CEI

LHR

33h 20m

2 stops

£629Multiple Airlines

Tue, 8 Sep - Tue, 15 Sep

09:30 - 19:25

LHR

CEI

27h 55m

2 stops

15:25 - 18:45

CEI

LHR

33h 20m

2 stops

£648Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

10:00 - 19:25

LHR

CEI

27h 25m

2 stops

08:25 - 06:55

CEI

LHR

28h 30m

2 stops

£649Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

09:30 - 19:25

LHR

CEI

27h 55m

2 stops

15:25 - 12:45

CEI

LHR

27h 20m

2 stops

£653Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

10:00 - 19:25

LHR

CEI

27h 25m

2 stops

20:00 - 06:55

CEI

LHR

40h 55m

2 stops

£671Multiple Airlines

Sat, 12 Sep - Sat, 19 Sep

14:45 - 19:25

LHR

CEI

22h 40m

2 stops

20:00 - 12:45

CEI

LHR

22h 45m

2 stops

£678Multiple Airlines

Tue, 15 Sep - Tue, 29 Sep

09:30 - 13:10

LHR

CEI

21h 40m

2 stops

18:55 - 14:10

CEI

LHR

25h 15m

2 stops

£696Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

14:45 - 19:25

LHR

CEI

22h 40m

2 stops

20:00 - 12:45

CEI

LHR

22h 45m

2 stops

£700Multiple Airlines

Fri, 11 Sep - Fri, 18 Sep

12:30 - 13:10

LHR

CEI

18h 40m

1 stop

10:10 - 19:15

CEI

LHR

15h 05m

1 stop

£879Thai Airways

Fri, 11 Sep - Fri, 18 Sep

12:30 - 18:20

LHR

CEI

23h 50m

1 stop

18:55 - 07:15

CEI

LHR

18h 20m

1 stop

£893Thai Airways

Thu, 10 Sep - Thu, 17 Sep

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Thai Airways flights from London Heathrow Airport to Chiang Rai

Our best Thai Airways deals on London Heathrow Airport to Chiang Rai flight tickets

Thai Airways

11 Sept

LHR12:30London Heathrow

18h 40m

1 stop

CEI13:10Chiang Rai

18 Sept

CEI10:10Chiang Rai

15h 05m

1 stop

LHR19:15London Heathrow

£879

Thai Airways

25 Jan

LHR11:50London Heathrow

19h 05m

1 stop

CEI13:55Chiang Rai

16 Feb

CEI14:25Chiang Rai

23h 15m

1 stop

LHR06:40London Heathrow

£912

Thai Airways

11 Sept

LHR12:30London Heathrow

15h 10m

1 stop

CEI09:40Chiang Rai

18 Sept

CEI10:10Chiang Rai

15h 05m

1 stop

LHR19:15London Heathrow

£915

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Chiang Rai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 8/9

14:45-19:25

2 stops22h 40m

Chiang Rai

Tue 15/9

15:25-18:45

2 stops33h 20m

£629

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 10/9

09:30-19:25

2 stops27h 55m

Chiang Rai

Thu 17/9

15:25-18:45

2 stops33h 20m

£648

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 10/9

10:00-19:25

2 stops27h 25m

Chiang Rai

Thu 17/9

08:25-06:55

2 stops28h 30m

£649

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 10/9

09:30-19:25

2 stops27h 55m

Chiang Rai

Thu 17/9

15:25-12:45

2 stops27h 20m

£653

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 12/9

10:00-19:25

2 stops27h 25m

Chiang Rai

Sat 19/9

20:00-06:55

2 stops40h 55m

£671

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 15/9

14:45-19:25

2 stops22h 40m

Chiang Rai

Tue 29/9

20:00-12:45

2 stops22h 45m

£678

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 10/9

09:30-13:10

2 stops21h 40m

Chiang Rai

Thu 17/9

18:55-14:10

2 stops25h 15m

£696

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Fri 11/9

14:45-19:25

2 stops22h 40m

Chiang Rai

Fri 18/9

20:00-12:45

2 stops22h 45m

£700

Fastest return journey

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Fri 11/9

12:30-13:10

1 stop18h 40m

Chiang Rai

Fri 18/9

10:10-19:15

1 stop15h 05m

£879

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 10/9

12:30-18:20

1 stop23h 50m

Chiang Rai

Thu 17/9

18:55-07:15

1 stop18h 20m

£893

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Chiang Rai

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Chiang Rai?

If you aren’t able to travel during the month of June, then book flights to Chiang Rai from London Heathrow Airport during May instead. Flights to Chiang Rai in May, while not as cheap as those in June, still average around £0.

When to book flights from London Heathrow Airport to Chiang Rai

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Chiang Rai according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Heathrow Airport to Chiang Rai (LHR to CEI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Chiang Rai

Fastest flight time	26h 55m
Direct flights	None

The fastest flight from London Heathrow Airport to Chiang Rai takes 26h 55m

There are no direct flights from London Heathrow Airport to Chiang Rai. There are no popular flight routes from London Heathrow Airport to Chiang Rai.

Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Chiang Rai

How far is London Heathrow to Chiang Rai by plane?
The straight-line distance from London Heathrow to Chiang Rai is 5571.3 mi. Typically, this will take 26h 55m by plane in normal conditions.
When did momondo last update prices for flights from London Heathrow Airport to Chiang Rai Airport?
Prices for flights from London Heathrow Airport to Chiang Rai Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Chiang Rai Airport?
There is 1 operator available for flights from London Heathrow Airport to Chiang Rai Airport as of July 2026.
How old do you have to be to fly from London Heathrow Airport to Chiang Rai Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Chiang Rai Airport.
What documentation or ID do you need to fly to Chiang Rai Airport?
The necessary travel and health documents for your Chiang Rai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London Heathrow Airport to Chiang Rai?
momondo data reveals that the most frequently booked airline on the route from London Heathrow Airport to Chiang Rai is Thai Airways, representing 100% of all bookings.

Best airlines flying from London Heathrow Airport to Chiang Rai

Compare and see reviews for airlines that fly from London Heathrow Airport to Chiang Rai with momondo

Airline	Rating	Free Cancellation	Price
Thai Airways	PriceFrom £795	Free Cancellation	Rating 7.9 412 reviews		Search Thai Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Chiang Rai?

Finding the right flight to Chiang Rai from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chiang Rai quick and easy, saving you time and money.

Can I find flights from London to Chiang Rai with flexible booking policies on momondo?

momondo does allow users to show only those flights to Chiang Rai from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Chiang Rai?

momondo provides multiple filters to help you find the best flight to Chiang Rai from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Chiang Rai right now. Can momondo alert me if prices change?

Price alerts on flights to Chiang Rai from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.