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 45% of people opting to fly with this airline when travelling to Chiang Rai. Keep in mind that there are 8 different airlines that fly to Chiang Rai on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London Heathrow to Chiang Rai?

Singapore Airlines is the most popular carrier operating from London Heathrow to Chiang Rai

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 April 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.

£388 Cheap Flights from London Heathrow Airport to Chiang Rai in 2026

Q: What is the typical price of a round-trip flight between London Heathrow Airport and Chiang Rai?

Prices are currently low for flights on this route. Typical prices usually range from £819 to £803. The lowest price recently found on this route was £506.

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Find the cheapest flights from London Heathrow Airport to Chiang Rai

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

22:10 - 07:55

LHR

CEI

27h 45m

2 stops

08:25 - 07:30

CEI

LHR

29h 05m

2 stops

£506Multiple Airlines

Tue, 9 Jun - Tue, 16 Jun

22:00 - 08:10

LHR

CEI

27h 10m

2 stops

08:40 - 19:05

CEI

LHR

17h 25m

1 stop

£930Multiple Airlines

Sun, 25 Oct - Wed, 25 Nov

22:00 - 07:55

LHR

CEI

26h 55m

2 stops

08:40 - 19:05

CEI

LHR

17h 25m

1 stop

£944Multiple Airlines

Sun, 25 Oct - Mon, 23 Nov

22:00 - 08:10

LHR

CEI

27h 10m

2 stops

08:40 - 19:05

CEI

LHR

17h 25m

1 stop

£946Multiple Airlines

Sun, 25 Oct - Mon, 23 Nov

12:30 - 19:25

LHR

CEI

24h 55m

2 stops

08:25 - 19:15

CEI

LHR

16h 50m

1 stop

£961Multiple Airlines

Tue, 9 Jun - Tue, 16 Jun

08:45 - 15:55

LHR

CEI

24h 10m

2 stops

08:40 - 19:05

CEI

LHR

17h 25m

1 stop

£989Multiple Airlines

Sun, 25 Oct - Wed, 25 Nov

08:45 - 15:55

LHR

CEI

24h 10m

2 stops

08:40 - 19:05

CEI

LHR

17h 25m

1 stop

£994Multiple Airlines

Sun, 25 Oct - Thu, 26 Nov

13:30 - 19:25

LHR

CEI

22h 55m

2 stops

08:40 - 19:05

CEI

LHR

17h 25m

1 stop

£1,002Multiple Airlines

Sun, 25 Oct - Thu, 26 Nov

13:30 - 19:25

LHR

CEI

22h 55m

2 stops

08:40 - 19:05

CEI

LHR

17h 25m

1 stop

£1,059Multiple Airlines

Sun, 25 Oct - Tue, 24 Nov

11:50 - 13:55

LHR

CEI

19h 05m

1 stop

18:55 - 06:40

CEI

LHR

18h 45m

1 stop

£1,175Thai Airways

Sun, 25 Oct - Wed, 25 Nov

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

25 Oct

LHR11:50London Heathrow

19h 05m

1 stop

CEI13:55Chiang Rai

25 Nov

CEI18:55Chiang Rai

18h 45m

1 stop

LHR06:40London Heathrow

£1,175

Thai Airways

9 Jun

LHR12:30London Heathrow

15h 10m

1 stop

CEI09:40Chiang Rai

16 Jun

CEI18:55Chiang Rai

18h 20m

1 stop

LHR07:15London Heathrow

£1,184

Thai Airways

25 Oct

LHR11:50London Heathrow

14h 50m

1 stop

CEI09:40Chiang Rai

27 Nov

CEI10:15Chiang Rai

16h 20m

1 stop

LHR19:35London Heathrow

£1,198

Singapore Airlines flights from London Heathrow Airport to Chiang Rai

Our best Singapore Airlines deals on London Heathrow Airport to Chiang Rai flight tickets

Singapore Airlines

25 Oct

LHR09:10London Heathrow

26h 40m

1 stop

CEI18:50Chiang Rai

23 Nov

CEI19:25Chiang Rai

19h 15m

1 stop

LHR07:40London Heathrow

£1,278

Singapore Airlines

25 Oct

LHR09:10London Heathrow

26h 40m

1 stop

CEI18:50Chiang Rai

23 Nov

CEI19:25Chiang Rai

19h 15m

1 stop

LHR07:40London Heathrow

£1,280

Singapore Airlines

3 May

LHR11:20London Heathrow

25h 15m

1 stop

CEI18:35Chiang Rai

11 Jun

CEI15:10Chiang Rai

47h 00m

1 stop

LHR08:10London Heathrow

£1,647

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 9/6

22:10-07:55

2 stops27h 45m

Chiang Rai

Tue 16/6

08:25-07:30

2 stops29h 05m

£506

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 25/10

22:00-08:10

2 stops27h 10m

Chiang Rai

Wed 25/11

08:40-19:05

1 stop17h 25m

£930

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 25/10

22:00-07:55

2 stops26h 55m

Chiang Rai

Mon 23/11

08:40-19:05

1 stop17h 25m

£944

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 25/10

22:00-08:10

2 stops27h 10m

Chiang Rai

Mon 23/11

08:40-19:05

1 stop17h 25m

£946

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 9/6

12:30-19:25

2 stops24h 55m

Chiang Rai

Tue 16/6

08:25-19:15

1 stop16h 50m

£961

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 25/10

08:45-15:55

2 stops24h 10m

Chiang Rai

Wed 25/11

08:40-19:05

1 stop17h 25m

£989

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 25/10

08:45-15:55

2 stops24h 10m

Chiang Rai

Thu 26/11

08:40-19:05

1 stop17h 25m

£994

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 25/10

13:30-19:25

2 stops22h 55m

Chiang Rai

Thu 26/11

08:40-19:05

1 stop17h 25m

£1,002

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 25/10

13:30-19:25

2 stops22h 55m

Chiang Rai

Tue 24/11

08:40-19:05

1 stop17h 25m

£1,059

Fastest return journey

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 25/10

11:50-13:55

1 stop19h 05m

Chiang Rai

Wed 25/11

18:55-06:40

1 stop18h 45m

£1,175

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 typical price of a round-trip flight between London Heathrow Airport and Chiang Rai?

What is the cheapest month to fly to Chiang Rai?

If you aren’t able to travel during the month of July, then book flights to Chiang Rai from London Heathrow Airport during June instead. Flights to Chiang Rai in June, while not as cheap as those in July, 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	18h 10m
Direct flights	None

The fastest flight from London Heathrow Airport to Chiang Rai takes 18h 10m

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 18h 10m 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 April 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 £765	Free Cancellation	Rating 7.9 401 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.