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 February 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.

£324 Cheap Flights from London Heathrow Airport to Chiang Rai in 2026

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Find the cheapest flights from London Heathrow Airport to Chiang Rai

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

09:00 - 18:20

LHR

CEI

27h 20m

2 stops

18:55 - 13:25

CEI

LHR

24h 30m

2 stops

£660Multiple Airlines

Thu, 11 Jun - Thu, 30 Jul

08:50 - 19:25

LHR

CEI

27h 35m

2 stops

08:30 - 18:10

CEI

LHR

40h 40m

2 stops

£701Multiple Airlines

Sat, 7 Mar - Fri, 20 Mar

08:05 - 13:10

LHR

CEI

23h 05m

2 stops

13:40 - 06:35

CEI

LHR

22h 55m

2 stops

£728Multiple Airlines

Sun, 3 May - Thu, 11 Jun

08:05 - 13:10

LHR

CEI

23h 05m

2 stops

18:55 - 13:25

CEI

LHR

24h 30m

2 stops

£729Multiple Airlines

Sun, 3 May - Thu, 11 Jun

09:00 - 18:20

LHR

CEI

27h 20m

2 stops

13:40 - 07:30

CEI

LHR

23h 50m

2 stops

£729Multiple Airlines

Sun, 3 May - Thu, 11 Jun

19:20 - 13:55

LHR

CEI

35h 35m

2 stops

14:25 - 18:25

CEI

LHR

35h 00m

2 stops

£746Multiple Airlines

Thu, 26 Feb - Mon, 2 Mar

21:05 - 07:55

LHR

CEI

27h 50m

2 stops

08:35 - 19:15

CEI

LHR

16h 40m

1 stop

£781Multiple Airlines

Tue, 24 Mar - Wed, 29 Apr

09:00 - 14:50

LHR

CEI

22h 50m

3 stops

15:20 - 19:20

CEI

LHR

35h 00m

2 stops

£787Multiple Airlines

Sat, 7 Mar - Fri, 20 Mar

19:25 - 18:20

LHR

CEI

15h 55m

2 stops

18:55 - 08:20

CEI

LHR

19h 25m

2 stops

£790Multiple Airlines

Tue, 24 Mar - Wed, 29 Apr

21:35 - 07:55

LHR

CEI

27h 20m

1 stop

20:00 - 16:20

CEI

LHR

51h 20m

2 stops

£799Multiple Airlines

Thu, 26 Feb - Mon, 2 Mar

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

7 Mar

LHR21:45London Heathrow

38h 05m

1 stop

CEI18:50Chiang Rai

20 Mar

CEI19:25Chiang Rai

26h 55m

1 stop

LHR15:20London Heathrow

£808

Singapore Airlines

3 May

LHR20:35London Heathrow

29h 30m

1 stop

CEI08:05Chiang Rai

11 Jun

CEI15:45Chiang Rai

33h 45m

1 stop

LHR19:30London Heathrow

£839

Singapore Airlines

3 May

LHR20:35London Heathrow

29h 30m

1 stop

CEI08:05Chiang Rai

11 Jun

CEI15:45Chiang Rai

33h 45m

1 stop

LHR19:30London Heathrow

£840

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

3 May

LHR12:30London Heathrow

18h 40m

1 stop

CEI13:10Chiang Rai

11 Jun

CEI18:55Chiang Rai

18h 20m

1 stop

LHR07:15London Heathrow

£852

Thai Airways

24 Mar

LHR11:50London Heathrow

23h 30m

1 stop

CEI18:20Chiang Rai

29 Apr

CEI10:10Chiang Rai

15h 05m

1 stop

LHR19:15London Heathrow

£881

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

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 11/6

09:00-18:20

2 stops27h 20m

Chiang Rai

Thu 30/7

18:55-13:25

2 stops24h 30m

£660

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 7/3

08:50-19:25

2 stops27h 35m

Chiang Rai

Fri 20/3

08:30-18:10

2 stops40h 40m

£701

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

08:05-13:10

2 stops23h 05m

Chiang Rai

Thu 11/6

13:40-06:35

2 stops22h 55m

£728

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

08:05-13:10

2 stops23h 05m

Chiang Rai

Thu 11/6

18:55-13:25

2 stops24h 30m

£729

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

09:00-18:20

2 stops27h 20m

Chiang Rai

Thu 11/6

13:40-07:30

2 stops23h 50m

£729

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 26/2

19:20-13:55

2 stops35h 35m

Chiang Rai

Mon 2/3

14:25-18:25

2 stops35h 00m

£746

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 24/3

21:05-07:55

2 stops27h 50m

Chiang Rai

Wed 29/4

08:35-19:15

1 stop16h 40m

£781

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 7/3

09:00-14:50

3 stops22h 50m

Chiang Rai

Fri 20/3

15:20-19:20

2 stops35h 00m

£787

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 24/3

19:25-18:20

2 stops15h 55m

Chiang Rai

Wed 29/4

18:55-08:20

2 stops19h 25m

£790

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 26/2

21:35-07:55

1 stop27h 20m

Chiang Rai

Mon 2/3

20:00-16:20

2 stops51h 20m

£799

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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

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

Thai Airways is the most popular carrier operating from London Heathrow to Chiang Rai

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 51% 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.

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	23h 05m
Direct flights	None

The fastest flight from London Heathrow Airport to Chiang Rai takes 23h 05m

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

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 23h 05m 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 February 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 £724	Free Cancellation	Rating 7.8 382 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.