LHR - CEI

£670 Find Cheap Flights from London Heathrow Airport to Chiang Rai

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Chiang Rai departing on 1/3. 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, 0 bags

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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Everything you should know

Cheapest return fare
£670
Multiple Airlines
Sun 1/3Wed 11/3
LHR - CEI • 2 stops
Cheapest one-way flight
Multiple Airlines
Tue 30/12
LHR - CEI • multi-stop
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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!
Flight Deals
Booking Insights
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, 1 Mar - Wed, 11 Mar
Multiple Airlines Logo
08:50 - 14:50
LHR
-
CEI
23h 00m2 stops
Multiple Airlines Logo
08:30 - 06:40
CEI
-
LHR
29h 10m2 stops
£670Multiple Airlines
Sun, 3 May - Thu, 11 Jun
Multiple Airlines Logo
06:00 - 13:10
LHR
-
CEI
25h 10m2 stops
Multiple Airlines Logo
10:10 - 08:20
CEI
-
LHR
28h 10m2 stops
£688Multiple Airlines
Wed, 11 Feb - Wed, 11 Mar
Multiple Airlines Logo
08:25 - 09:40
LHR
-
CEI
18h 15m2 stops
Multiple Airlines Logo
14:25 - 06:15
CEI
-
LHR
22h 50m2 stops
£716Multiple Airlines
Sun, 3 May - Thu, 11 Jun
Multiple Airlines Logo
21:45 - 09:40
LHR
-
CEI
29h 55m2 stops
Multiple Airlines Logo
10:10 - 12:45
CEI
-
LHR
32h 35m2 stops
£753Multiple Airlines
Sun, 25 Jan - Sat, 31 Jan
Multiple Airlines Logo
21:00 - 07:55
LHR
-
CEI
27h 55m2 stops
Multiple Airlines Logo
15:10 - 06:40
CEI
-
LHR
22h 30m1 stop
£810Multiple Airlines
Sun, 1 Mar - Wed, 11 Mar
Multiple Airlines Logo
21:20 - 19:25
LHR
-
CEI
15h 05m1 stop
Multiple Airlines Logo
08:40 - 19:05
CEI
-
LHR
17h 25m1 stop
£812Multiple Airlines
Wed, 11 Feb - Wed, 11 Mar
Thai Airways Logo
11:50 - 09:40
LHR
-
CEI
14h 50m1 stop
Thai Airways Logo
18:55 - 06:40
CEI
-
LHR
18h 45m1 stop
£833Thai Airways
Sun, 3 May - Thu, 11 Jun
Singapore Airlines Logo
22:05 - 08:00
LHR
-
CEI
27h 55m1 stop
Singapore Airlines Logo
15:45 - 19:30
CEI
-
LHR
33h 45m1 stop
£839Singapore Airlines
Sun, 1 Mar - Wed, 11 Mar
Multiple Airlines Logo
11:50 - 18:20
LHR
-
CEI
23h 30m1 stop
Multiple Airlines Logo
18:55 - 06:40
CEI
-
LHR
42h 45m2 stops
£869Multiple Airlines
Sun, 25 Jan - Sat, 31 Jan
Multiple Airlines Logo
16:00 - 18:20
LHR
-
CEI
19h 20m2 stops
Multiple Airlines Logo
14:25 - 06:35
CEI
-
LHR
23h 10m2 stops
£891Multiple Airlines
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 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 £731.

Find deals

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

Low seasonSeptember
Cheapest flight£670
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly and prices are also 8% 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 £670 for a return ticket.

  • 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 371 reviews
7.5Comfort
6.9Entertainment
7.8Boarding
7.3Food
8.3Crew
Airline reviews

business class is old but still done very well by the team.

10.0 ExcellentZeb, Dec 2025
BKK - DPS
Read more Thai Airways reviews

business class is old but still done very well by the team.

Excellent airline. The plane was clean and the staff were very attentive

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

I'm not interested in improving the airline. Therefore, I won't explain this in more detail. Next time I'll try a different one.

The flight (boarding) was delayed by 40-50 minutes and there was very crowed. They need to improve on the timeliness & boarding process. (They asked passenger to board in groups, but the 2nd group was standing there waiting for 20 minutes!). However, services from the crew was very good, also the food was good as well. I also found the legroom was quite comfortable.

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).

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

Information on your arrival and departure airports

London Heathrow Airport (LHR)
Chiang Rai (CEI)