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Cheap Flights from London Heathrow to Chiang Rai

Compare London Heathrow to Chiang Rai flight deals

Find the cheapest month or even day of the year to fly to Chiang Rai

Book the best Chiang Rai fare with no extra fees

Flight deals from London Heathrow to Chiang Rai

Looking for a cheap last-minute deal or the best return flight from London Heathrow to Chiang Rai? Find the lowest prices on one-way and return tickets right here.
Chiang Rai.Rs114,900 per passenger.Departing Wed, 10 Sep.One-way flight with Shenzhen Airlines.Outbound indirect flight with Shenzhen Airlines, departs from London Heathrow on Wed, 10 Sep, arriving in Chiang Rai.Price includes taxes and charges.From Rs114,900, select.
Chiang Rai.Rs120,513 per passenger.Departing Mon, 20 Oct.One-way flight with Aegean Airlines.Outbound indirect flight with Aegean Airlines, departs from London Heathrow on Mon, 20 Oct, arriving in Chiang Rai.Price includes taxes and charges.From Rs120,513, select.
Chiang Rai.Rs127,427 per passenger.Departing Fri, 14 Nov.One-way flight with Aegean Airlines.Outbound indirect flight with Aegean Airlines, departs from London Heathrow on Fri, 14 Nov, arriving in Chiang Rai.Price includes taxes and charges.From Rs127,427, select.
Chiang Rai.Rs132,076 per passenger.Departing Wed, 4 Mar.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Wed, 4 Mar, arriving in Chiang Rai.Price includes taxes and charges.From Rs132,076, select.
Chiang Rai.Rs135,130 per passenger.Departing Wed, 3 Dec.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Wed, 3 Dec, arriving in Chiang Rai.Price includes taxes and charges.From Rs135,130, select.
Chiang Rai.Rs153,893 per passenger.Departing Thu, 14 Aug.One-way flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from London Heathrow on Thu, 14 Aug, arriving in Chiang Rai.Price includes taxes and charges.From Rs153,893, select.

Find the cheapest month to fly from London Heathrow to Chiang Rai

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Chiang Rai flights are currently cheapest in September.
Aug
from Rs153,893
Sep
from Rs114,900
Oct
from Rs120,513
Nov
from Rs127,427
Dec
from Rs135,130
Jan
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Feb
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Mar
from Rs132,076
Apr
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May
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Jun
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Jul
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London Heathrow to Chiang Rai: Alternative routes

Compare routes from London Heathrow to Chiang Rai below. You may find an airport to fly into that's cheaper, faster, or easier than Chiang Rai.

London to Chiang Rai: Flight information

The things to know before you go.
Cheapest flight foundRs114,900
Cheapest month to flySeptember

Finding cheap flights from London Heathrow to Chiang Rai: Frequently asked questions

The best price we found for a return flight from London Heathrow to Chiang Rai is Rs205,093. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London Heathrow to Chiang Rai. But we found flights with one or more stops from Rs205,093.
As of August 2025, there are no flights flying from London Heathrow to Chiang Rai.
The cheapest month to fly from London Heathrow to Chiang Rai is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Chiang Rai Airport on Monday, 22 September 2025.
No airlines currently offer direct flights between London Heathrow Airport and Chiang Rai Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chiang Rai but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chiang Rai is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, China Southern offers the cheapest flight tickets to Chiang Rai.

Flying from London Heathrow Airport (LHR) to Chiang Rai International Airport (CEI): what you need to know

  • Chiang Rai is seven hours ahead of London and is in the UTC+7 timezone.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to catch your LHR to CEI flight.

  • During popular months like July, it's a good idea to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead of an international flight when you travel during peak periods in general.

  • If you'd love to tour a different city along the way, search for a flight with a stopover. To see all your options for tickets from London Heathrow Airport to Chiang Rai International Airport, uncheck 'Direct flights only.' Suvarnabhumi Airport is a sought-after stop between LHR and CEI.

How to find the cheapest flights from London Heathrow Airport (LHR) to Chiang Rai International Airport (CEI)

  • Currently, Rs114,900 is the lowest price we've seen for a one-way London Heathrow Airport to Chiang Rai International Airport flight. The best price for a return plane ticket is Rs205,093. Bear in mind that fares may change due to demand at the time of booking.

  • To find cheap tickets from LHR to CEI, book ahead. Airlines usually offer their best fares when flights are first made available.

  • Finding cheap flights from London Heathrow Airport to Chiang Rai International Airport is easy if you're flexible with your dates. Use the 'Whole month' search function to see the lowest fares across every month and snap up a great deal.

  • Getting your hands on cheap flights from LHR to CEI is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when fares go down.

  • Discover the perfect flight for you with the help of the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from London Heathrow Airport to Chiang Rai International Airport, use the 'Sort by' function. You can also filter results by airline, departure and arrival times, and number of stops.

Handy information about London Heathrow Airport (LHR)

  • Of all flights departing from London Heathrow Airport, 68.18% arrive on time at their destination.

  • London Heathrow Airport is about 31 kilometres from central London. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 55 minutes or so to arrive, depending on the traffic.

  • You can expect a journey time of around 1 hour when using public transport.

  • Taking an early flight from London Heathrow Airport to Chiang Rai International Airport? Avoid rushing to the airport (and get some extra shut-eye) by choosing one of these hotels near LHR:

Arriving at Chiang Rai International Airport (CEI)

Getting from Chiang Rai International Airport (CEI) to central Chiang Rai

  • From Chiang Rai International Airport, Chiang Rai is approximately 8 kilometres away. It takes around 15 minutes to drive to the centre.

When to fly to Chiang Rai International Airport (CEI)

  • April is the busiest month for flights from London Heathrow Airport to Chiang Rai International Airport. To skip the crowds, go to Chiang Rai in February.

  • Book your flight from London Heathrow Airport to Chiang Rai International Airport for April if you'd like to go to Chiang Rai during its warmest month. You can expect temperatures of between 22ºC and 41ºC.

  • January sees average temperatures of between 12ºC and 30ºC. Search for cheap tickets from LHR to CEI sometime then if you want to travel when it's cooler.

Explore more of Thailand

  • Chiang Rai has its own special appeal, but there are so many other parts of Thailand just waiting to be explored. Around 418 kilometres south-east of Chiang Rai, a trip to Udon Thani will keep you busy. Don't miss top attractions like Nong Prajak Public Park, Krom Luang Prachaksinlapakhom Monument and Chinesisches Tor.

  • Around 153 kilometres south-west of Chiang Rai, Chiang Mai is another essential stop in Thailand. Experience this destination's highlights firsthand at Doi Suthep, Kalare Night Bazaar and Wat Phra Singh.

Plan the rest of your trip from London to Chiang Rai

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.