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 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.

£331 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

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

10:00 - 18:20LHR London Heathrow-CEI Chiang Rai

26h 20m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 15:20CEI Chiang Rai-LHR London Heathrow

31h 40m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£672Gulf Air

Wed, 30 Sep - Wed, 14 Oct

10:00 - 18:20LHR London Heathrow-CEI Chiang Rai

26h 20m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 15:20CEI Chiang Rai-LHR London Heathrow

31h 40m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£672Gulf Air

Wed, 30 Sep - Wed, 14 Oct

22:05 - 18:20LHR London Heathrow-CEI Chiang Rai

38h 15m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 15:20CEI Chiang Rai-LHR London Heathrow

31h 40m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£674Gulf Air

Wed, 30 Sep - Wed, 14 Oct

10:00 - 18:20LHR London Heathrow-CEI Chiang Rai

26h 20m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

10:10 - 15:20CEI Chiang Rai-LHR London Heathrow

35h 10m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£691Gulf Air

Wed, 30 Sep - Wed, 14 Oct

22:05 - 18:20LHR London Heathrow-CEI Chiang Rai

38h 15m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 15:20CEI Chiang Rai-LHR London Heathrow

31h 40m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£692Gulf Air

Wed, 30 Sep - Wed, 14 Oct

09:30 - 18:20LHR London Heathrow-CEI Chiang Rai

26h 50m2 stops Doha Hamad Intl Bangkok Suvarnabhumi

10:15 - 08:00CEI Chiang Rai-LHR London Heathrow

28h 45m2 stops Bangkok Suvarnabhumi Doha Hamad Intl

£829Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

22:00 - 14:55LHR London Heathrow-CEI Chiang Rai

34h 55m2 stops Shenzhen Bangkok Suvarnabhumi

08:30 - 19:35CEI Chiang Rai-LHR London Heathrow

18h 05m1 stop Bangkok Suvarnabhumi

£843Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

10:30 - 19:25LHR London Heathrow-CEI Chiang Rai

25h 55m2 stops Rome Fiumicino Bangkok Suvarnabhumi

20:00 - 09:40CEI Chiang Rai-LHR London Heathrow

44h 40m2 stops Bangkok Suvarnabhumi Rome Fiumicino

£866Multiple Airlines

Mon, 14 Dec - Tue, 2 Feb

21:25 - 18:20LHR London Heathrow-CEI Chiang Rai

14h 55m1 stop Bangkok Suvarnabhumi

10:15 - 19:35CEI Chiang Rai-LHR London Heathrow

16h 20m1 stop Bangkok Suvarnabhumi

£968Thai Airways

Thu, 22 Oct - Thu, 29 Oct

11:50 - 18:20LHR London Heathrow-CEI Chiang Rai

23h 30m1 stop Bangkok Suvarnabhumi

18:55 - 06:40CEI Chiang Rai-LHR London Heathrow

18h 45m1 stop Bangkok Suvarnabhumi

£1,001Thai Airways

Mon, 14 Dec - Wed, 3 Feb

Cheap last-minute flights

Enter your travel dates to find the best prices.

22:05 - 18:20LHR London Heathrow-CEI Chiang Rai

38h 15m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 15:20CEI Chiang Rai-LHR London Heathrow

31h 40m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£814Gulf Air

Tue, 15 Sep - Fri, 18 Sep

21:35 - 09:40LHR London Heathrow-CEI Chiang Rai

30h 05m1 stop Bangkok Suvarnabhumi

13:40 - 19:20CEI Chiang Rai-LHR London Heathrow

35h 40m1 stop Bangkok Suvarnabhumi

£915EVA Air

Mon, 14 Sep - Wed, 16 Sep

21:35 - 09:40LHR London Heathrow-CEI Chiang Rai

30h 05m1 stop Bangkok Suvarnabhumi

13:40 - 19:20CEI Chiang Rai-LHR London Heathrow

35h 40m1 stop Bangkok Suvarnabhumi

£916EVA Air

Mon, 14 Sep - Wed, 16 Sep

21:35 - 09:40LHR London Heathrow-CEI Chiang Rai

30h 05m1 stop Bangkok Suvarnabhumi

13:40 - 19:20CEI Chiang Rai-LHR London Heathrow

35h 40m1 stop Bangkok Suvarnabhumi

£917EVA Air

Mon, 14 Sep - Wed, 16 Sep

10:00 - 18:20LHR London Heathrow-CEI Chiang Rai

26h 20m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 15:20CEI Chiang Rai-LHR London Heathrow

31h 40m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£971Gulf Air

Mon, 14 Sep - Wed, 16 Sep

10:00 - 13:10LHR London Heathrow-CEI Chiang Rai

21h 10m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 06:55CEI Chiang Rai-LHR London Heathrow

23h 15m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£972Gulf Air

Mon, 14 Sep - Wed, 16 Sep

10:00 - 13:10LHR London Heathrow-CEI Chiang Rai

21h 10m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 06:55CEI Chiang Rai-LHR London Heathrow

23h 15m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£1,031Gulf Air

Mon, 14 Sep - Wed, 16 Sep

10:00 - 13:10LHR London Heathrow-CEI Chiang Rai

21h 10m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

13:40 - 06:55CEI Chiang Rai-LHR London Heathrow

23h 15m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£1,185Gulf Air

Mon, 14 Sep - Wed, 16 Sep

21:35 - 13:10LHR London Heathrow-CEI Chiang Rai

33h 35m1 stop Bangkok Suvarnabhumi

13:40 - 19:20CEI Chiang Rai-LHR London Heathrow

35h 40m1 stop Bangkok Suvarnabhumi

£1,699EVA Air

Tue, 15 Sep - Fri, 18 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

22 Oct

LHR21:25London Heathrow

14h 55m

1 stop

CEI18:20Chiang Rai

29 Oct

CEI10:15Chiang Rai

16h 20m

1 stop

LHR19:35London Heathrow

£968

Thai Airways

13 Dec

LHR11:50London Heathrow

23h 30m

1 stop

CEI18:20Chiang Rai

2 Feb

CEI14:25Chiang Rai

23h 15m

1 stop

LHR06:40London Heathrow

£1,001

Thai Airways

9 Dec

LHR11:50London Heathrow

14h 50m

1 stop

CEI09:40Chiang Rai

11 Jan

CEI18:55Chiang Rai

31h 40m

1 stop

LHR19:35London Heathrow

£1,287

EVA Air flights from London Heathrow Airport to Chiang Rai

Our best EVA Air deals on London Heathrow Airport to Chiang Rai flight tickets

EVA Air

30 Sept

LHR21:35London Heathrow

30h 05m

1 stop

CEI09:40Chiang Rai

14 Oct

CEI13:40Chiang Rai

35h 40m

1 stop

LHR19:20London Heathrow

£894

EVA Air

14 Sept

LHR21:35London Heathrow

30h 05m

1 stop

CEI09:40Chiang Rai

16 Sept

CEI13:40Chiang Rai

35h 40m

1 stop

LHR19:20London Heathrow

£915

EVA Air

14 Sept

LHR21:35London Heathrow

30h 05m

1 stop

CEI09:40Chiang Rai

16 Sept

CEI13:40Chiang Rai

35h 40m

1 stop

LHR19:20London Heathrow

£916

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 London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 30/9

10:00-18:20

2 stops26h 20m

Chiang Rai

Wed 14/10

13:40-15:20

2 stops31h 40m

£672

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 30/9

10:00-18:20

2 stops26h 20m

Chiang Rai

Wed 14/10

13:40-15:20

2 stops31h 40m

£672

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 30/9

22:05-18:20

2 stops38h 15m

Chiang Rai

Wed 14/10

13:40-15:20

2 stops31h 40m

£674

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 30/9

10:00-18:20

2 stops26h 20m

Chiang Rai

Wed 14/10

10:10-15:20

2 stops35h 10m

£691

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 30/9

22:05-18:20

2 stops38h 15m

Chiang Rai

Wed 14/10

13:40-15:20

2 stops31h 40m

£692

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Thu 22/10

09:30-18:20

2 stops26h 50m

Chiang Rai

Thu 29/10

10:15-08:00

2 stops28h 45m

£829

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Thu 22/10

22:00-14:55

2 stops34h 55m

Chiang Rai

Thu 29/10

08:30-19:35

1 stop18h 05m

£843

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Mon 14/12

10:30-19:25

2 stops25h 55m

Chiang Rai

Tue 2/2

20:00-09:40

2 stops44h 40m

£866

Fastest return journey

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Thu 22/10

21:25-18:20

1 stop14h 55m

Chiang Rai

Thu 29/10

10:15-19:35

1 stop16h 20m

£968

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Mon 14/12

11:50-18:20

1 stop23h 30m

Chiang Rai

Wed 3/2

18:55-06:40

1 stop18h 45m

£1,001

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

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 42% 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 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

Best price found	£331
Fastest flight time	19h 20m
Direct flights	None

The best one-way flight to Chiang Rai from London Heathrow Airport in the past 72 hours is £331. The best return flight deal from London Heathrow Airport to Chiang Rai found on momondo in the last 72 hours is £672.

The fastest flight from London Heathrow Airport to Chiang Rai takes 19h 20m

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 19h 20m 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 September 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 £904	Free Cancellation	Rating 7.9 418 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.