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665 € Cheap Flights from Chiang Rai to London Heathrow

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      Travellers and cabin class, 1 Adult, Economy

      Compare Chiang Rai to London Heathrow flight deals

      Find the cheapest month or even day of the year to fly to London Heathrow

      Book the best London Heathrow fare with no extra fees

      Flight deals from Chiang Rai to London Heathrow

      Looking for a cheap last-minute deal or the best return flight from Chiang Rai Airport to London Heathrow Airport? If you want to travel next month, return fares start from 684 €. Find the lowest prices on one-way and return tickets right here.
      London.665 € per passenger.Departing Tue, 20 Oct, returning Tue, 3 Nov.Return flight with Thai AirAsia and Shenzhen Airlines.Outbound indirect flight with Thai AirAsia, departs from Chiang Rai on Tue, 20 Oct, arriving in London Heathrow.Inbound indirect flight with Shenzhen Airlines, departs from London Heathrow on Tue, 3 Nov, arriving in Chiang Rai.Price includes taxes and charges.From 665 €, select.
      London.684 € per passenger.Departing Fri, 16 Oct, returning Thu, 22 Oct.Return flight with Thai AirAsia and Shenzhen Airlines.Outbound indirect flight with Thai AirAsia, departs from Chiang Rai on Fri, 16 Oct, arriving in London Heathrow.Inbound indirect flight with Shenzhen Airlines, departs from London Heathrow on Thu, 22 Oct, arriving in Chiang Rai.Price includes taxes and charges.From 684 €, select.
      London.863 € per passenger.Departing Sat, 5 Dec, returning Wed, 6 Jan.Return flight with Thai VietJet Air and Air China.Outbound indirect flight with Thai VietJet Air, departs from Chiang Rai on Sat, 5 Dec, arriving in London Heathrow.Inbound indirect flight with Air China, departs from London Heathrow on Wed, 6 Jan, arriving in Chiang Rai.Price includes taxes and charges.From 863 €, select.
      London.882 € per passenger.Departing Wed, 30 Sep, returning Sat, 2 Jan.Return flight with Thai AirAsia and LOT.Outbound indirect flight with Thai AirAsia, departs from Chiang Rai on Wed, 30 Sep, arriving in London Heathrow.Inbound indirect flight with LOT, departs from London Heathrow on Sat, 2 Jan, arriving in Chiang Rai.Price includes taxes and charges.From 882 €, select.
      London.897 € per passenger.Departing Mon, 28 Sep, returning Mon, 5 Oct.Return flight with Gulf Air.Outbound indirect flight with Gulf Air, departs from Chiang Rai on Mon, 28 Sep, arriving in London Heathrow.Inbound indirect flight with Gulf Air, departs from London Heathrow on Mon, 5 Oct, arriving in Chiang Rai.Price includes taxes and charges.From 897 €, select.
      London.959 € per passenger.Departing Tue, 6 Oct, returning Tue, 9 Feb.Return flight with Thai Airways and Qatar Airways.Outbound indirect flight with Thai Airways, departs from Chiang Rai on Tue, 6 Oct, arriving in London Heathrow.Inbound indirect flight with Qatar Airways, departs from London Heathrow on Tue, 9 Feb, arriving in Chiang Rai.Price includes taxes and charges.From 959 €, select.
      London.981 € per passenger.Departing Sat, 6 Mar, returning Mon, 6 Sep.Return flight with Thai Airways and Qatar Airways.Outbound indirect flight with Thai Airways, departs from Chiang Rai on Sat, 6 Mar, arriving in London Heathrow.Inbound indirect flight with Qatar Airways, departs from London Heathrow on Mon, 6 Sep, arriving in Chiang Rai.Price includes taxes and charges.From 981 €, select.
      London.1.032 € per passenger.Departing Wed, 30 Sep, returning Sat, 19 Dec.Return flight with Thai AirAsia and Thai Airways.Outbound indirect flight with Thai AirAsia, departs from Chiang Rai on Wed, 30 Sep, arriving in London Heathrow.Inbound indirect flight with Thai Airways, departs from London Heathrow on Sat, 19 Dec, arriving in Chiang Rai.Price includes taxes and charges.From 1.032 €, select.
      London.1.091 € per passenger.Departing Sat, 20 Mar, returning Tue, 30 Mar.Return flight with Thai Airways and Qatar Airways.Outbound indirect flight with Thai Airways, departs from Chiang Rai on Sat, 20 Mar, arriving in London Heathrow.Inbound indirect flight with Qatar Airways, departs from London Heathrow on Tue, 30 Mar, arriving in Chiang Rai.Price includes taxes and charges.From 1.091 €, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Chiang Rai to London Heathrow found in the last 4 days, and are subject to change and availability.

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

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chiang Rai to London Heathrow flights are currently cheapest in October.
      Sep
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      Oct
      from 684 €
      Nov
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      Dec
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      Jan
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      Feb
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      Mar
      from 1.091 €
      Apr
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      May
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      Jun
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      Jul
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      Aug
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      Chiang Rai to London Heathrow: Alternative routes

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

      London City

      12km from central London
      Closest
      from 1.125 €
      Search flights

      London Heathrow

      23km from central London
      from 665 €
      Search flights

      London Gatwick

      40km from central London
      Cheapest
      from 628 €
      Search flights

      London Luton

      45km from central London
      from 842 €
      Search flights

      London Stansted

      49km from central London
      from 687 €
      Search flights

      London Southend

      57km from central London
      from 1.371 €
      Search flights

      Chiang Rai to London: Flight information

      The things to know before you go.
      Cheapest flight found665 €
      Cheapest month to flyOctober

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

      The best price we found for a return flight from Chiang Rai to London Heathrow is 665 €. 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 Chiang Rai to London Heathrow. But we found flights with one or more stops from 665 €.
      As of September 2026, there are no flights flying from Chiang Rai to London Heathrow.
      The cheapest month to fly from Chiang Rai to London Heathrow is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chiang Rai Airport to London Heathrow Airport on Tuesday, 20 October 2026.
      No airlines currently offer direct flights between Chiang Rai Airport and London Heathrow 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 London Heathrow 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 London is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Thai AirAsia offers the cheapest flight tickets to London Heathrow.

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

      • London's timezone is UTC+0, making London seven hours behind Chiang Rai.

      • Give yourself plenty of time to make your CEI to LHR flight. A good rule of thumb is to arrive two hours before international departures and an hour ahead for domestic flights.

      • Be prepared for longer lines in popular months like April. Arriving up to four hours in advance for international flights and two hours for a domestic departure will help ensure a smooth travel experience.

      • Take a detour to a new city or break up your flight with a stopover. Just uncheck 'Direct flights only' to see your options when searching for tickets from Chiang Rai International Airport to London Heathrow Airport. Many travellers pass through Suvarnabhumi Airport when flying between CEI and LHR.

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

      • 246 € is the lowest price for a one-way Chiang Rai International Airport to London Heathrow Airport flight. Return flights start from 665 €. These fares may change depending on availability and demand.

      • Don't wait until the last minute. You're more likely to get cheap tickets from CEI to LHR if you book early. Airlines often offer some amazing early bird discounts.

      • If you're willing to be flexible with your trip dates, use the 'Whole month' tool. It'll give you the cheapest price across the month when searching for your flight from Chiang Rai International Airport to London Heathrow Airport.

      • Cut down on the time spent looking for cheap flights from CEI to LHR by creating a Price Alert. You'll get an email or notification through the app when a special offer becomes available.

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

      Handy information about Chiang Rai International Airport (CEI)

      • When it comes to Chiang Rai International Airport's on-time performance, 73.36% of flights arrive within the expected timeframe.

      • Chiang Rai International Airport is about 8 kilometres from central Chiang Rai. If you're driving, ride-sharing or catching a cab from the centre, it'll take 15 minutes or so to arrive, depending on the traffic.

      • Catching an early flight from Chiang Rai International Airport to London Heathrow Airport? Avoid rushing to the airport (and sneak in some extra snooze time) by choosing one of these hotels close to CEI:

      Arriving at London Heathrow Airport (LHR)

      Getting from London Heathrow Airport (LHR) to central London

      • London Heathrow Airport to central London has a drive time of about 55 minutes. It's approximately 31 kilometres away.

      • Travelling by public transport takes roughly 1 hour.

      When to fly to London Heathrow Airport (LHR)

      • July is the busiest month for flights from Chiang Rai International Airport to London Heathrow Airport. To avoid the crowds, visit London in February.

      • When reserving your flight from Chiang Rai International Airport to London Heathrow Airport, consider the type of weather you enjoy. July is the warmest month in London, with the temperature ranging from 11ºC (52ºF) to 26ºC (79ºF).

      • If you want cooler conditions, look for a cheap ticket from CEI to LHR in January. Temperatures average between 0ºC (32ºF) and 9ºC (48ºF) then.

      Explore more of United Kingdom

      • London is always a good idea, but there are so many other parts of United Kingdom just waiting to be discovered. About 161 kilometres north-west of London, a visit to Birmingham will keep you on the go. Start with leading sights like Cadbury World, The Library of Birmingham and National Sea Life Centre.

      • Bristol is another sought-after destination in United Kingdom and is around 177 kilometres west of London. No trip is complete without experiencing Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.