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Cheap flights from Chiang Rai to London from £943

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Chiang Rai to London departing on 5/3. 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 Chiang Rai to London

Cheap return flights

Enter your travel dates to find the best prices.
Thai Airways Logo
14:25 - 06:40CEI-LHR
23h 15m1 stop
Thai Airways Logo
11:50 - 18:20LHR-CEI
23h 30m1 stop
£943Thai Airways
Find Deal
Thu, 5 Mar - Sat, 7 Mar
Thai Airways Logo
14:25 - 06:40CEI-LHR
23h 15m1 stop
Thai Airways Logo
21:35 - 13:55LHR-CEI
33h 20m1 stop
£946Thai Airways
Find Deal
Thu, 5 Mar - Sat, 7 Mar
Lufthansa Logo
18:55 - 13:00CEI-LHR
25h 05m2 stops
Lufthansa Logo
20:15 - 18:20LHR-CEI
39h 05m2 stops
£1,120Lufthansa
Find Deal
Thu, 5 Mar - Sat, 7 Mar
Lufthansa Logo
18:55 - 08:05CEI-LHR
20h 10m2 stops
Lufthansa Logo
20:15 - 18:20LHR-CEI
39h 05m2 stops
£1,251Lufthansa
Find Deal
Thu, 5 Mar - Sat, 7 Mar

Thai Airways flights from Chiang Rai to London Heathrow Airport

Our best Thai Airways deals on Chiang Rai to London Heathrow Airport flight tickets
Thai Airways
5 Mar
CEI14:25Chiang Rai
23h 15m
1 stop
LHR06:40London Heathrow
7 Mar
LHR11:50London Heathrow
23h 30m
1 stop
CEI18:20Chiang Rai
£943
Find similar
Thai Airways
5 Mar
CEI14:25Chiang Rai
23h 15m
1 stop
LHR06:40London Heathrow
7 Mar
LHR21:35London Heathrow
33h 20m
1 stop
CEI13:55Chiang Rai
£946
Find similar

Lufthansa flights from Chiang Rai to London Heathrow Airport

Our best Lufthansa deals on Chiang Rai to London Heathrow Airport flight tickets
Lufthansa
5 Mar
CEI18:55Chiang Rai
25h 05m
2 stops
LHR13:00London Heathrow
7 Mar
LHR20:15London Heathrow
39h 05m
2 stops
CEI18:20Chiang Rai
£1,120
Find similar
Lufthansa
5 Mar
CEI18:55Chiang Rai
20h 10m
2 stops
LHR08:05London Heathrow
7 Mar
LHR20:15London Heathrow
39h 05m
2 stops
CEI18:20Chiang Rai
£1,251
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Chiang Rai to London Heathrow Airport 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 4 November 2025.
Use the filters below to find and compare flights from Chiang Rai to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 5/3

14:25-06:40

1 stop23h 15m

London Heathrow

Sat 7/3

11:50-18:20

1 stop23h 30m

£943

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 5/3

14:25-06:40

1 stop23h 15m

London Heathrow

Sat 7/3

21:35-13:55

1 stop33h 20m

£946

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 5/3

18:55-13:00

2 stops25h 05m

London Heathrow

Sat 7/3

20:15-18:20

2 stops39h 05m

£1,120

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 5/3

18:55-08:05

2 stops20h 10m

London Heathrow

Sat 7/3

20:15-18:20

2 stops39h 05m

£1,251

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Chiang Rai to London Heathrow Airport

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

Cheap Chiang Rai to London Heathrow Airport (CEI to LHR) flight deals and tips

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

Direct flights

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

    The straight-line distance from Chiang Rai to London Heathrow is 5571.3 mi. By plane, this route typically takes 20h 10m.

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

    Prices for flights from Chiang Rai Airport to London Heathrow Airport are refreshed on a daily basis.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chiang Rai Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Chiang Rai to London Heathrow Airport?

    Search flight deals from Chiang Rai to London Heathrow Airport. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Chiang Rai to London Heathrow Airport with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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Why use momondo?

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

It is quick and easy to find Chiang Rai to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Chiang Rai to London with flexible booking policies on momondo?

All flight searches from Chiang Rai to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Chiang Rai to London?

momondo helps you find the best flight between Chiang Rai and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Chiang Rai and alert you when they change.

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