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 October 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.

£335 Cheap Flights from London Heathrow Airport to Chiang Rai in 2026/27

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.

13:30 - 19:25LHR London Heathrow-CEI Chiang Rai

22h 55m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi

15:20 - 11:05CEI Chiang Rai-LHR London Heathrow

26h 45m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

£697Multiple Airlines

Wed, 20 Jan - Thu, 4 Feb

21:20 - 19:25LHR London Heathrow-CEI Chiang Rai

15h 05m1 stop Bangkok Suvarnabhumi

08:30 - 19:05CEI Chiang Rai-LHR London Heathrow

17h 35m1 stop Bangkok Suvarnabhumi

£756Multiple Airlines

Wed, 20 Jan - Thu, 4 Feb

21:20 - 19:25LHR London Heathrow-CEI Chiang Rai

15h 05m1 stop Bangkok Suvarnabhumi

13:25 - 18:55CEI Chiang Rai-LHR London Heathrow

36h 30m2 stops Bangkok Don Mueang Intl Mumbai Chhatrapati Shivaji Intl

£760Multiple Airlines

Wed, 20 Jan - Thu, 4 Feb

17:50 - 18:20LHR London Heathrow-CEI Chiang Rai

17h 30m2 stops Munich Franz Josef Strauss Bangkok Suvarnabhumi

18:55 - 10:45CEI Chiang Rai-LHR London Heathrow

22h 50m3 stops Bangkok Suvarnabhumi Munich Franz Josef Strauss Frankfurt am Main

£864Lufthansa

Wed, 20 Jan - Thu, 4 Feb

21:20 - 13:55LHR London Heathrow-CEI Chiang Rai

33h 35m1 stop Bangkok Suvarnabhumi

14:25 - 19:05CEI Chiang Rai-LHR London Heathrow

35h 40m1 stop Bangkok Suvarnabhumi

£917EVA Air

Wed, 9 Dec - Wed, 16 Dec

17:50 - 19:25LHR London Heathrow-CEI Chiang Rai

18h 35m2 stops Munich Franz Josef Strauss Bangkok Suvarnabhumi

15:20 - 08:20CEI Chiang Rai-LHR London Heathrow

24h 00m2 stops Bangkok Suvarnabhumi Vienna Intl

£924Multiple Airlines

Wed, 9 Dec - Wed, 16 Dec

11:50 - 09:40LHR London Heathrow-CEI Chiang Rai

14h 50m1 stop Bangkok Suvarnabhumi

14:25 - 06:40CEI Chiang Rai-LHR London Heathrow

23h 15m1 stop Bangkok Suvarnabhumi

£980Thai Airways

Sun, 13 Dec - Tue, 12 Jan

06:25 - 09:40LHR London Heathrow-CEI Chiang Rai

20h 15m2 stops Istanbul Bangkok Suvarnabhumi

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

16h 20m1 stop Bangkok Suvarnabhumi

£1,052Multiple Airlines

Wed, 9 Dec - Wed, 16 Dec

21:40 - 18:20LHR London Heathrow-CEI Chiang Rai

37h 40m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

10:15 - 14:45CEI Chiang Rai-LHR London Heathrow

35h 30m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£1,073Gulf Air

Sun, 13 Dec - Tue, 12 Jan

17:50 - 19:25LHR London Heathrow-CEI Chiang Rai

18h 35m2 stops Munich Franz Josef Strauss Bangkok Suvarnabhumi

11:10 - 08:20CEI Chiang Rai-LHR London Heathrow

28h 10m3 stops Phuket City Bangkok Suvarnabhumi Vienna Intl

£1,097Multiple Airlines

Wed, 9 Dec - Wed, 16 Dec

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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

9 Dec

LHR21:20London Heathrow

33h 35m

1 stop

CEI13:55Chiang Rai

16 Dec

CEI14:25Chiang Rai

35h 40m

1 stop

LHR19:05London Heathrow

£917

EVA Air

23 Nov

LHR21:20London Heathrow

29h 20m

1 stop

CEI09:40Chiang Rai

26 Nov

CEI14:25Chiang Rai

35h 40m

1 stop

LHR19:05London Heathrow

£2,980

EVA Air

23 Nov

LHR21:20London Heathrow

33h 35m

1 stop

CEI13:55Chiang Rai

26 Nov

CEI14:25Chiang Rai

35h 40m

1 stop

LHR19:05London Heathrow

£2,984

Turkish Airlines flights from London Heathrow Airport to Chiang Rai

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

Turkish Airlines

23 Nov

LHR16:10London Heathrow

58h 30m

2 stops

CEI09:40Chiang Rai

26 Nov

CEI14:25Chiang Rai

32h 55m

2 stops

LHR16:20London Heathrow

£6,297

Turkish Airlines

23 Nov

LHR16:10London Heathrow

58h 30m

2 stops

CEI09:40Chiang Rai

26 Nov

CEI14:25Chiang Rai

31h 30m

2 stops

LHR14:55London Heathrow

£6,326

Turkish Airlines

23 Nov

LHR16:30London Heathrow

58h 10m

2 stops

CEI09:40Chiang Rai

26 Nov

CEI14:25Chiang Rai

31h 30m

2 stops

LHR14:55London Heathrow

£6,338

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 20/1

13:30-19:25

2 stops22h 55m

Chiang Rai

Thu 4/2

15:20-11:05

2 stops26h 45m

£697

Fastest return journey

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 20/1

21:20-19:25

1 stop15h 05m

Chiang Rai

Thu 4/2

08:30-19:05

1 stop17h 35m

£756

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 20/1

21:20-19:25

1 stop15h 05m

Chiang Rai

Thu 4/2

13:25-18:55

2 stops36h 30m

£760

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 20/1

17:50-18:20

2 stops17h 30m

Chiang Rai

Thu 4/2

18:55-10:45

3 stops22h 50m

£864

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 9/12

21:20-13:55

1 stop33h 35m

Chiang Rai

Wed 16/12

14:25-19:05

1 stop35h 40m

£917

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 9/12

17:50-19:25

2 stops18h 35m

Chiang Rai

Wed 16/12

15:20-08:20

2 stops24h 00m

£924

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Sun 13/12

11:50-09:40

1 stop14h 50m

Chiang Rai

Tue 12/1

14:25-06:40

1 stop23h 15m

£980

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 9/12

06:25-09:40

2 stops20h 15m

Chiang Rai

Wed 16/12

10:15-19:35

1 stop16h 20m

£1,052

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Sun 13/12

21:40-18:20

2 stops37h 40m

Chiang Rai

Tue 12/1

10:15-14:45

2 stops35h 30m

£1,073

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 9/12

17:50-19:25

2 stops18h 35m

Chiang Rai

Wed 16/12

11:10-08:20

3 stops28h 10m

£1,097

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 38% 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	£335
Fastest flight time	26h 40m
Direct flights	None

The best one-way flight to Chiang Rai from London Heathrow Airport in the past 72 hours is £335. The best return flight deal from London Heathrow Airport to Chiang Rai found on momondo in the last 72 hours is £697.

The fastest flight from London Heathrow Airport to Chiang Rai takes 26h 40m

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 40m 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 October 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 £921	Free Cancellation	Rating 7.9 433 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.