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Cheap flights from Chiang Rai to London Heathrow Airport from £861

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
CEI — LHR
25 Jul — 1 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Rai to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Chiang Rai to Heathrow
Explore the most affordable flight options available from Chiang Rai to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 June 2026.

Wed 5/813:40
CEI
-
LHR
2 stops24h 20m
Multiple Airlines
Wed 12/806:30
LHR
-
CEI
3 stops26h 25m
Multiple Airlines
Deal found 21/6£861
Thu 6/810:10
CEI
-
LHR
2 stops34h 55m
Multiple Airlines
Thu 13/809:30
LHR
-
CEI
2 stops26h 50m
Multiple Airlines
Deal found 22/6£885

Find flight deals from Chiang Rai to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Rai (CEI) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 June 2026.

Round-trip from

£861
5/8-12/8
  • 5/8-12/8
  • 5 total stops
  • 50h 45m total
  • Chiang Rai to London
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Chiang Rai to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 June 2026.
Use the filters below to find and compare flights from Chiang Rai to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Wed 5/8

13:40-08:00

2 stops24h 20m

London Heathrow

Wed 12/8

06:30-14:55

3 stops26h 25m

£861

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 6/8

10:10-15:05

2 stops34h 55m

London Heathrow

Thu 13/8

09:30-18:20

2 stops26h 50m

£885

Flights are sorted by cheapest return flights first.

Deals found on 21/6

Sorted by cheapest first

Best time to book a flight from Chiang Rai to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Chiang Rai with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Chiang Rai to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Chiang Rai to London Heathrow?

    If you book a flight to London Heathrow from Chiang Rai, you will be flying from Chiang Rai, which is the city’s only airport. Chiang Rai (CEI) is located 4.5 mi from the center of Chiang Rai. There are 0 flights from Chiang Rai to London Heathrow per day from 0 different airlines.

  • Can I find deals for flights from Chiang Rai to Heathrow that include hotel bookings?

    Yes. In addition to deals on Chiang Rai to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chiang Rai to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chiang Rai to Heathrow.

  • Can I find deals for business class flights from Chiang Rai to Heathrow?

    Yes. Cheapflights offers flight deals from Chiang Rai to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
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Luton
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Ilford
Slough
Hayes
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Can Cheapflights find flights from Chiang Rai to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Chiang Rai to Heathrow flexibly with Cheapflights today.

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