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Cheap flights from London to Chiang Rai from £258

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 to Chiang Rai departing on 19/9. 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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Find the cheapest flights from London to Chiang Rai

Cheap return flights

Logo
20:15 - 18:20LHR-CEI
39h 05m2 stops
Logo
10:15 - 21:40CEI-LHR
18h 25m2 stops
£573
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Tue, 24 Feb - Mon, 23 Mar
Logo
14:50 - 18:20LHR-CEI
20h 30m2 stops
Logo
18:55 - 08:20CEI-LHR
20h 25m2 stops
£574
Find Deal
Tue, 10 Feb - Wed, 11 Mar
Logo
14:50 - 18:20LHR-CEI
20h 30m2 stops
Logo
18:55 - 08:20CEI-LHR
20h 25m2 stops
£574
Find Deal
Sat, 21 Feb - Mon, 23 Mar
Logo
19:25 - 18:20LHR-CEI
15h 55m2 stops
Logo
18:55 - 08:20CEI-LHR
20h 25m2 stops
£590
Find Deal
Sat, 21 Feb - Sat, 21 Mar
Logo
16:00 - 15:55LGW-CEI
16h 55m1 stop
Logo
08:40 - 18:25CEI-LGW
16h 45m1 stop
£590
Find Deal
Sun, 22 Feb - Sun, 22 Mar
Logo
08:25 - 15:55LHR-CEI
24h 30m2 stops
Logo
08:40 - 18:25CEI-LHR
40h 45m2 stops
£591
Find Deal
Mon, 2 Feb - Mon, 16 Feb
Logo
14:50 - 18:20LHR-CEI
20h 30m2 stops
Logo
18:55 - 08:20CEI-LHR
20h 25m2 stops
£605
Find Deal
Mon, 23 Feb - Sat, 21 Mar
Logo
20:15 - 18:20LHR-CEI
39h 05m2 stops
Logo
10:15 - 21:40CEI-LHR
18h 25m2 stops
£611
Find Deal
Tue, 24 Feb - Tue, 24 Mar
Thai Airways Logo
11:50 - 13:55LHR-CEI
19h 05m1 stop
Thai Airways Logo
10:15 - 19:35CEI-LHR
16h 20m1 stop
£781Thai Airways
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Tue, 10 Feb - Tue, 10 Mar
Thai Airways Logo
11:50 - 18:20LHR-CEI
23h 30m1 stop
Thai Airways Logo
18:55 - 19:35CEI-LHR
31h 40m1 stop
£784Thai Airways
Find Deal
Wed, 11 Feb - Wed, 11 Mar

Thai Airways flights from London to Chiang Rai

Our best Thai Airways deals on London to Chiang Rai flight tickets
Thai Airways
10 Feb
LHR11:50London Heathrow
19h 05m
1 stop
CEI13:55Chiang Rai
10 Mar
CEI10:15Chiang Rai
16h 20m
1 stop
LHR19:35London Heathrow
£781
Find similar
Thai Airways
11 Feb
LHR11:50London Heathrow
23h 30m
1 stop
CEI18:20Chiang Rai
11 Mar
CEI18:55Chiang Rai
31h 40m
1 stop
LHR19:35London Heathrow
£784
Find similar
Thai Airways
11 Feb
LHR11:50London Heathrow
19h 05m
1 stop
CEI13:55Chiang Rai
11 Mar
CEI18:55Chiang Rai
31h 40m
1 stop
LHR19:35London Heathrow
£784
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London 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 14 September 2025.
Use the filters below to find and compare flights from London to Chiang Rai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 24/2

20:15-18:20

2 stops39h 05m

Chiang Rai

Mon 23/3

10:15-21:40

2 stops18h 25m

£573

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 10/2

14:50-18:20

2 stops20h 30m

Chiang Rai

Wed 11/3

18:55-08:20

2 stops20h 25m

£574

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 21/2

14:50-18:20

2 stops20h 30m

Chiang Rai

Mon 23/3

18:55-08:20

2 stops20h 25m

£574

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 21/2

19:25-18:20

2 stops15h 55m

Chiang Rai

Sat 21/3

18:55-08:20

2 stops20h 25m

£590

LondonChiang Rai

LGW - CEI

LGWCEI

London Gatwick

Sun 22/2

16:00-15:55

1 stop16h 55m

Chiang Rai

Sun 22/3

08:40-18:25

1 stop16h 45m

£590

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Mon 2/2

08:25-15:55

2 stops24h 30m

Chiang Rai

Mon 16/2

08:40-18:25

2 stops40h 45m

£591

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Mon 23/2

14:50-18:20

2 stops20h 30m

Chiang Rai

Sat 21/3

18:55-08:20

2 stops20h 25m

£605

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 24/2

20:15-18:20

2 stops39h 05m

Chiang Rai

Tue 24/3

10:15-21:40

2 stops18h 25m

£611

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Tue 10/2

11:50-13:55

1 stop19h 05m

Chiang Rai

Tue 10/3

10:15-19:35

1 stop16h 20m

£781

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 11/2

11:50-18:20

1 stop23h 30m

Chiang Rai

Wed 11/3

18:55-19:35

1 stop31h 40m

£784

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Chiang Rai from

How to get the cheapest flight ticket from London 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 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 £792. On the other hand, Thursday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £940.

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 to Chiang Rai when you can find flight prices for as low as £832. 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 £882. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from London to Chiang Rai

Are you open to changing your travel dates? Check out the ideal times to fly from London to Chiang Rai according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Chiang Rai (LON to CEI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Chiang Rai

Direct flights

None
There are no direct flights from London to Chiang Rai. There are no popular flight routes from London to Chiang Rai.
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  • How far is London to Chiang Rai by plane?

    Chiang Rai is 5557.2 mi away from London. By plane, this route typically takes 14h 45m.

  • When did momondo last update prices for flights from London to Chiang Rai Airport?

    Prices for flights from London to Chiang Rai Airport refresh daily.

  • How many operators does momondo search for flights from London to Chiang Rai Airport?

  • How old do you have to be to fly from London to Chiang Rai Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Chiang Rai Airport.

  • What documentation or ID do you need to fly to Chiang Rai Airport?

    The required travel and health documents for your Chiang Rai Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chiang Rai Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from London to Chiang Rai?

Best airlines flying from London to Chiang Rai

Compare and see reviews for airlines that fly from London to Chiang Rai with momondo
Airline
Rating
Free Cancellation
Price
Thai AirwaysPriceFrom £728Free CancellationRating
7.8
350 reviews
Search Thai Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Chiang Rai?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chiang Rai from London.

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?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chiang Rai from London.

I’m not ready to book a flight from London to Chiang Rai right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Chiang Rai from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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