LHR - CEI

£699 Find Cheap Flights from London Heathrow Airport to Chiang Rai – Compare and Save

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 5/10. 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

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Everything you should know

Cheapest return fare
£699
Typical prices: £933-£1,181
Multiple Airlines
Mon 5/10Mon 26/10
LHR - CEI • 2 stops
Direct flights
Not available
There are currently no direct flights between Heathrow and Chiang Rai. You’ll need at least 1 connection.
Insights
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Insights
When to travel
June
Cheapest • 100% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Mon, 5 Oct - Mon, 26 Oct
Multiple Airlines Logo
15:05 - 18:20
LHR
-
CEI
21h 15m
2 stops
Multiple Airlines Logo
14:25 - 14:00
CEI
-
LHR
30h 35m
2 stops
£699Multiple Airlines
Sat, 21 Nov - Sun, 6 Dec
Multiple Airlines Logo
13:50 - 09:40
LHR
-
CEI
36h 50m
2 stops
Multiple Airlines Logo
18:55 - 13:25
CEI
-
LHR
25h 30m
2 stops
£750Multiple Airlines
Mon, 2 Nov - Mon, 23 Nov
Multiple Airlines Logo
21:00 - 20:45
LHR
-
CEI
40h 45m
2 stops
Multiple Airlines Logo
20:00 - 06:40
CEI
-
LHR
17h 40m
1 stop
£812Multiple Airlines
Sat, 21 Nov - Sun, 6 Dec
Multiple Airlines Logo
10:35 - 15:55
LHR
-
CEI
22h 20m
2 stops
Multiple Airlines Logo
14:50 - 06:40
CEI
-
LHR
22h 50m
1 stop
£824Multiple Airlines
Mon, 5 Oct - Mon, 26 Oct
Multiple Airlines Logo
21:35 - 19:25
LHR
-
CEI
15h 50m
1 stop
Multiple Airlines Logo
14:00 - 16:25
CEI
-
LHR
33h 25m
2 stops
£825Multiple Airlines
Sun, 1 Nov - Sun, 15 Nov
Multiple Airlines Logo
21:00 - 08:10
LHR
-
CEI
28h 10m
2 stops
Multiple Airlines Logo
20:00 - 06:40
CEI
-
LHR
17h 40m
1 stop
£828Multiple Airlines
Mon, 2 Nov - Mon, 23 Nov
Multiple Airlines Logo
14:55 - 18:15
LHR
-
CEI
20h 20m
3 stops
Multiple Airlines Logo
20:00 - 18:35
CEI
-
LHR
29h 35m
2 stops
£880Multiple Airlines
Sat, 21 Nov - Sun, 6 Dec
Multiple Airlines Logo
21:20 - 13:55
LHR
-
CEI
33h 35m
1 stop
Multiple Airlines Logo
14:25 - 19:05
CEI
-
LHR
35h 40m
1 stop
£887Multiple Airlines
Mon, 5 Oct - Mon, 26 Oct
Multiple Airlines Logo
14:45 - 15:55
LHR
-
CEI
19h 10m
2 stops
Multiple Airlines Logo
19:15 - 12:05
CEI
-
LHR
23h 50m
3 stops
£897Multiple Airlines
Mon, 5 Oct - Mon, 26 Oct
Multiple Airlines Logo
21:35 - 09:40
LHR
-
CEI
30h 05m
1 stop
Multiple Airlines Logo
18:55 - 19:05
CEI
-
LHR
31h 10m
1 stop
£900Multiple 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.

What is the cheapest month to fly from London Heathrow Airport to Chiang Rai?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Chiang Rai, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Chiang Rai is June, where tickets cost £0 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £1,394 and £1,344 respectively.

Find deals

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

Low seasonSeptember
Cheapest flight£699
Best time to beat the crowds (37% less expensive on average)
Most popular time to fly (5% more expensive 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 5 days, the lowest price for a flight from London Heathrow Airport to Chiang Rai was £699 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.
7.9
Thai AirwaysOverall score based on 409 reviews
7.9Boarding
7.7Comfort
8.4Crew
6.9Entertainment
7.4Food
Airline reviews

We still get drinks and a snack. Love the gift bags too.

10.0 ExcellentTsaav Stuvy, Mar 2026
BKK - UTH
Read more Thai Airways reviews

We still get drinks and a snack. Love the gift bags too.

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

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.

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😉

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

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.

Delayed flight in Singapore caused the transfer at Bangkok to be very stressful. Fortunately, no elderly were in this trip, else it will not be possible to catch the connecting flight. There were also several occasions throughout the flight journey where some of the passengers were not wearing their seat belts despite several remainders from the stewardess.

Check in was a disaster. 90 minutes and only 2 economy check in desks open. Had to rush to catch the flight.

I couldnt go on this flight and lost all my money over 1,000 UK Pounds as my visa to Myanmar was not accepted :(

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)