LHR - CEI

£464 Find Cheap Flights from London Heathrow Airport to Chiang Rai

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Chiang Rai departing on 13/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Chiang Rai

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Chiang Rai, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Chiang Rai, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Heathrow to Chiang Rai (LHR-CEI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Chiang Rai that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Chiang Rai

Sun, 25 Jan - Sat, 28 Feb
Multiple Airlines Logo
14:15 - 19:25LHR-CEI
22h 10m2 stops
Multiple Airlines Logo
08:30 - 07:30CEI-LHR
30h 00m2 stops
£607Multiple Airlines
Find Deal
Mon, 1 Dec - Wed, 17 Dec
Multiple Airlines Logo
08:25 - 15:55LHR-CEI
24h 30m2 stops
Multiple Airlines Logo
08:40 - 18:25CEI-LHR
40h 45m2 stops
£643Multiple Airlines
Find Deal
Tue, 27 Jan - Mon, 2 Mar
Multiple Airlines Logo
19:50 - 08:10LHR-CEI
29h 20m2 stops
Multiple Airlines Logo
08:40 - 19:05CEI-LHR
17h 25m1 stop
£770Multiple Airlines
Find Deal
Tue, 27 Jan - Tue, 3 Mar
Multiple Airlines Logo
19:50 - 08:10LHR-CEI
29h 20m2 stops
Multiple Airlines Logo
08:40 - 19:05CEI-LHR
17h 25m1 stop
£770Multiple Airlines
Find Deal
Mon, 1 Dec - Wed, 17 Dec
Thai Airways Logo
11:50 - 13:55LHR-CEI
19h 05m1 stop
Thai Airways Logo
10:15 - 06:40CEI-LHR
27h 25m1 stop
£803Thai Airways
Find Deal
Wed, 11 Feb - Wed, 11 Mar
Thai Airways Logo
11:50 - 18:20LHR-CEI
23h 30m1 stop
Thai Airways Logo
18:55 - 06:40CEI-LHR
18h 45m1 stop
£853Thai Airways
Find Deal
Sun, 25 Jan - Sat, 28 Feb
Singapore Airlines Logo
10:40 - 08:00LHR-CEI
38h 20m1 stop
Singapore Airlines Logo
08:35 - 19:10CEI-LHR
65h 35m1 stop
£884Singapore Airlines
Find Deal
Mon, 26 Jan - Sun, 1 Mar
Lufthansa Logo
20:15 - 18:20LHR-CEI
39h 05m2 stops
Lufthansa Logo
18:55 - 10:25CEI-LHR
22h 30m2 stops
£938Lufthansa
Find Deal
Thu, 22 Jan - Mon, 2 Mar
Singapore Airlines Logo
20:35 - 08:00LHR-CEI
28h 25m1 stop
Singapore Airlines Logo
19:25 - 19:10CEI-LHR
30h 45m1 stop
£962Singapore Airlines
Find Deal
Sun, 25 Jan - Sun, 1 Mar
Lufthansa Logo
13:50 - 18:20LHR-CEI
21h 30m2 stops
Lufthansa Logo
18:55 - 10:25CEI-LHR
22h 30m2 stops
£1,015Lufthansa
Find Deal

Everything you should know

Top airlines
Thai Airways
Cheapest • from £803 (return)
Thai Airways
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest return fare
£607
Multiple Airlines
Sun 25/1Sat 28/2
LHR - CEI • 2 stops
Cheapest one-way flight
£464
Multiple Airlines
Sat 13/12
LHR - CEI • 3 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Chiang Rai!
Booking Insights

KAYAK's insights & trends for Heathrow to Chiang Rai flights

Get data-powered insights and trends into flights from Heathrow to Chiang Rai to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from London Heathrow Airport to Chiang Rai?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest return tickets from London Heathrow Airport to Chiang Rai were found on Thai Airways (£803) and Singapore Airlines (£884).

Which airlines fly direct between London Heathrow Airport and Chiang Rai?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from London Heathrow Airport to Chiang Rai.

There is just one airline that flies from London Heathrow Airport to Chiang Rai direct and that is Thai Airways. The best return deal found from Thai Airways for the route is £738.

Good to know - Cheap tickets from London Heathrow Airport to Chiang Rai

Low seasonSeptember
Cheapest flight£464
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly and prices are also 10% lower on average.
Flight from London Heathrow Airport to Chiang Rai

When to book flights from Heathrow to Chiang Rai

Are your dates flexible? Find out the best times to travel from Heathrow to Chiang Rai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Chiang Rai flights

  • What is the cheapest flight from London Heathrow Airport to Chiang Rai?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Chiang Rai was £464 for a one-way ticket and £607 for a return.

  • Which aircraft models fly most regularly from London Heathrow Airport to Chiang Rai?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Chiang Rai?

    Star Alliance is the only airline alliance operating flights between London Heathrow Airport and Chiang Rai.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Chiang Rai?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Chiang Rai.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Chiang Rai?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chiang Rai from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Chiang Rai?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Chiang Rai with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Chiang Rai?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chiang Rai from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Heathrow to Chiang Rai

 
See real verified KAYAK customer reviews for airlines flying from London to Chiang Rai. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Chiang Rai? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
Thai AirwaysOverall score based on 360 reviews
6.9Entertainment
7.6Comfort
8.3Crew
7.9Boarding
7.3Food
Airline reviews

Need to improve on punctuality. My flight was delayed by 1 hour.

4.0 OkayPeerapat, Oct 2025BKK - KIX
Read more Thai Airways reviews

Need to improve on punctuality. My flight was delayed by 1 hour.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

Except that our flight was cancelled, by mail, and later moved to 12 hours prior, then the experience was good. In Bangkok we were offered a hotel, it was fine, but would have been nice to know in advance😉

The flight was mostly fine, but I really wished that seats had an outlet to charge devices considering the length of the flight (15 hours there and 14 hours back).

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

Terrible. It’s like they are stuck in the dark ages. I brought a standard carry on suitcase and a back pack - I was told I could only carry on 7kg per bag - in business class, I was forced to remove articles from the suitcase and put them into my backpack! That’s the most ridiculous thing I’ve ever encountered in all my years of flying. The two bags weighed the same amount but one could not be more than 7kg. Holy cow.

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

I give EVA 5 stars in every category. I enjoy this airline and it's great team of employees. I always highly recommend EVA to friends and family and everyone.

The flight was delayed going out of the gate at BKK that made it a difficult challenge to get through immigration transfer at tapei and make it to my departure on time. This appears to be a recurring issue. The flight crew and cabin crew were excellent. The food was very nice.

The boarding efficiency was good. A couple of the flight attendants did not seem in the best of moods. Overall it was a good experience.

Everything you need to know for your flight from Heathrow to Chiang Rai

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