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Cheap flights from London Heathrow Airport to Chiang Rai from £327

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Chiang Rai departing on 17/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from London Heathrow Airport to Chiang Rai

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:00 - 19:25
LHR
-
CEI
23h 25m2 stops
Multiple Airlines Logo
08:30 - 06:40
CEI
-
LHR
29h 10m2 stops
£594Multiple Airlines
Thu, 29 Jan - Thu, 5 Feb
Multiple Airlines Logo
08:05 - 09:40
LHR
-
CEI
18h 35m2 stops
Multiple Airlines Logo
14:25 - 06:15
CEI
-
LHR
22h 50m2 stops
£731Multiple Airlines
Wed, 11 Feb - Wed, 11 Mar
Multiple Airlines Logo
09:00 - 18:20
LHR
-
CEI
27h 20m2 stops
Multiple Airlines Logo
18:55 - 13:25
CEI
-
LHR
24h 30m2 stops
£749Multiple Airlines
Sun, 3 May - Thu, 11 Jun
Multiple Airlines Logo
13:00 - 18:20
LHR
-
CEI
22h 20m2 stops
Multiple Airlines Logo
14:25 - 17:35
CEI
-
LHR
34h 10m3 stops
£754Multiple Airlines
Thu, 29 Jan - Thu, 5 Feb
Multiple Airlines Logo
21:00 - 07:55
LHR
-
CEI
27h 55m2 stops
Multiple Airlines Logo
16:25 - 06:40
CEI
-
LHR
21h 15m1 stop
£796Multiple Airlines
Thu, 29 Jan - Thu, 5 Feb
Singapore Airlines Logo
10:40 - 08:00
LHR
-
CEI
38h 20m1 stop
Singapore Airlines Logo
19:25 - 19:10
CEI
-
LHR
30h 45m1 stop
£821Singapore Airlines
Thu, 29 Jan - Thu, 5 Feb
Singapore Airlines Logo
11:25 - 18:50
LHR
-
CEI
25h 25m1 stop
Singapore Airlines Logo
19:25 - 05:55
CEI
-
LHR
40h 30m1 stop
£838Singapore Airlines
Sun, 3 May - Thu, 11 Jun
Thai Airways Logo
11:50 - 13:55
LHR
-
CEI
19h 05m1 stop
Thai Airways Logo
14:25 - 06:40
CEI
-
LHR
23h 15m1 stop
£929Thai Airways
Wed, 11 Feb - Wed, 11 Mar
Thai Airways Logo
11:50 - 13:55
LHR
-
CEI
19h 05m1 stop
Thai Airways Logo
10:15 - 19:35
CEI
-
LHR
16h 20m1 stop
£939Thai Airways
Wed, 11 Feb - Wed, 11 Mar
Multiple Airlines Logo
21:20 - 13:55
LHR
-
CEI
33h 35m1 stop
Multiple Airlines Logo
18:55 - 20:50
CEI
-
LHR
32h 55m2 stops
£1,293Multiple Airlines
Wed, 11 Feb - Wed, 11 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
29 Jan
LHR10:40London Heathrow
38h 20m
1 stop
CEI08:00Chiang Rai
5 Feb
CEI19:25Chiang Rai
30h 45m
1 stop
LHR19:10London Heathrow
£821
Find similar
Singapore Airlines
3 May
LHR11:25London Heathrow
25h 25m
1 stop
CEI18:50Chiang Rai
11 Jun
CEI19:25Chiang Rai
40h 30m
1 stop
LHR05:55London Heathrow
£838
Find similar

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 Feb
LHR11:50London Heathrow
19h 05m
1 stop
CEI13:55Chiang Rai
11 Mar
CEI14:25Chiang Rai
23h 15m
1 stop
LHR06:40London Heathrow
£929
Find similar
Thai Airways
11 Feb
LHR11:50London Heathrow
19h 05m
1 stop
CEI13:55Chiang Rai
11 Mar
CEI10:15Chiang Rai
16h 20m
1 stop
LHR19:35London Heathrow
£939
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Chiang Rai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 16 December 2025.
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 29/1

13:00-19:25

2 stops23h 25m

Chiang Rai

Thu 5/2

08:30-06:40

2 stops29h 10m

£594

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 11/2

08:05-09:40

2 stops18h 35m

Chiang Rai

Wed 11/3

14:25-06:15

2 stops22h 50m

£731

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

09:00-18:20

2 stops27h 20m

Chiang Rai

Thu 11/6

18:55-13:25

2 stops24h 30m

£749

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 29/1

13:00-18:20

2 stops22h 20m

Chiang Rai

Thu 5/2

14:25-17:35

3 stops34h 10m

£754

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 29/1

21:00-07:55

2 stops27h 55m

Chiang Rai

Thu 5/2

16:25-06:40

1 stop21h 15m

£796

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 29/1

10:40-08:00

1 stop38h 20m

Chiang Rai

Thu 5/2

19:25-19:10

1 stop30h 45m

£821

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

11:25-18:50

1 stop25h 25m

Chiang Rai

Thu 11/6

19:25-05:55

1 stop40h 30m

£838

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 11/2

11:50-13:55

1 stop19h 05m

Chiang Rai

Wed 11/3

14:25-06:40

1 stop23h 15m

£929

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 11/2

11:50-13:55

1 stop19h 05m

Chiang Rai

Wed 11/3

10:15-19:35

1 stop16h 20m

£939

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 11/2

21:20-13:55

1 stop33h 35m

Chiang Rai

Wed 11/3

18:55-20:50

2 stops32h 55m

£1,293

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Chiang Rai from

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 day to depart on your flight to Chiang Rai?

The cheapest day to depart from London Heathrow Airport to Chiang Rai is on a Friday. Travellers who choose to depart for Chiang Rai on a Friday will often find tickets for as low as £803. On the other hand, Thursday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £954.

What is the cheapest time of day to depart on your flight to Chiang Rai?

In the evening is the cheapest time of day to fly from London Heathrow Airport to Chiang Rai when you can find flight prices for as low as £844. Flying to Chiang Rai in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around £894. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 35m

Direct flights

None
The fastest flight from London Heathrow Airport to Chiang Rai takes 18h 35m
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 18h 35m 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?

  • 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?

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 AirwaysPriceFrom £738Free CancellationRating
7.8
366 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.

An easier way to manage your Chiang Rai trip

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