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Cheap flights from London Heathrow Airport to Chiang Rai from £717

This is the cheapest return 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 11/10. 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

Logo
08:40 - 14:55LHR-CEI
24h 15m3 stops
Logo
20:00 - 21:20CEI-LHR
32h 20m2 stops
£717
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Sat, 11 Oct - Sat, 1 Nov
Logo
21:05 - 09:25LHR-CEI
30h 20m2 stops
Logo
16:25 - 19:20CEI-LHR
33h 55m1 stop
£861
Find Deal
Sat, 11 Oct - Sat, 1 Nov
Logo
15:05 - 18:20LHR-CEI
21h 15m2 stops
Logo
10:15 - 08:20CEI-LHR
29h 05m2 stops
£929
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Sat, 11 Oct - Sat, 1 Nov
Logo
21:25 - 13:10LHR-CEI
33h 45m1 stop
Logo
18:55 - 19:20CEI-LHR
31h 25m1 stop
£1,051
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Sat, 11 Oct - Sat, 1 Nov
Lufthansa Logo
16:25 - 18:20LHR-CEI
19h 55m3 stops
Lufthansa Logo
18:55 - 08:05CEI-LHR
20h 10m2 stops
£1,439Lufthansa
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Sat, 11 Oct - Sat, 1 Nov
Logo
14:50 - 18:20LHR-CEI
21h 30m3 stops
Logo
18:55 - 10:45CEI-LHR
22h 50m3 stops
£4,111
Find Deal
Sat, 11 Oct - Sat, 1 Nov

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 1 August 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

Sat 11/10

08:40-14:55

3 stops24h 15m

Chiang Rai

Sat 1/11

20:00-21:20

2 stops32h 20m

£717

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 11/10

21:05-09:25

2 stops30h 20m

Chiang Rai

Sat 1/11

16:25-19:20

1 stop33h 55m

£861

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 11/10

15:05-18:20

2 stops21h 15m

Chiang Rai

Sat 1/11

10:15-08:20

2 stops29h 05m

£929

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 11/10

21:25-13:10

1 stop33h 45m

Chiang Rai

Sat 1/11

18:55-19:20

1 stop31h 25m

£1,051

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 11/10

16:25-18:20

3 stops19h 55m

Chiang Rai

Sat 1/11

18:55-08:05

2 stops20h 10m

£1,439

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sat 11/10

14:50-18:20

3 stops21h 30m

Chiang Rai

Sat 1/11

18:55-10:45

3 stops22h 50m

£4,111

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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 £812. 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 £964.

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 £853. 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 £904. 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

Best price found

£717

Fastest flight time

19h 55m

Direct flights

None

Airports in Chiang Rai

1 airport
The best flight deal from London Heathrow Airport to Chiang Rai found on momondo in the last 72 hours is £717
The fastest flight from London Heathrow Airport to Chiang Rai takes 19h 55m
There are no direct flights from London Heathrow Airport to Chiang Rai. Popular non-direct route for this connection is London Heathrow Airport - Chiang Rai Airport.
There is 1 airport near Chiang Rai: Chiang Rai (CEI)
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  • 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 55m 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 £746Free CancellationRating
7.8
340 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.

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